Consumer Guide to Efficient Central Climate Control Systems

Perspective
-----------
This Guide has been prepared by the Air Conditioning and Refrigeration
Institute (ARI), a nonprofit association of manufacturers. ARI wants
to help you get the most out of your central air conditioning system,
whether the system is already at work in your home or you are
considering the purchase of a new one.

The companies which have made this Consumer Guide available to you are
listed on pages 28-30. These companies support ARI and its many
services to consumers. One of the most important of these services
is the ARI Certification Program.

Not long ago, people didn't give their home appliances much thought.
They simply plugged them in and let them do their work.

However, in today's energy-conscious world, people are becoming aware
that appliances - all appliances - consume not only just kilowatts,
but also ever-increasing portions of their income.

As a result, cost-conscious consumers are beginning to take a hard
look at appliances such as their home comfort systems and ask
themselves some pointed questions:

* Is my system wasting costly energy?

* Is there something I can do to improve its efficiency?

* Are some air conditioners more efficient than others?

Others thinking of buying a new home or refurbishing an older one
also want to know more about the efficient equipment available today.

Air conditioner manufacturers want you to understand your air
conditioner and how it works so that you can get the most comfort for
your energy dollar. In this booklet, you will find simple, relatively
inexpensive ideas to improve your system's efficiency.

Also, if you are planning to purchase a new air conditioner or new
home, you should be aware that there are differences between units.
Information included here can help you make an informed decision.

(ARI Seal Graphic)

When you see this seal on central air-conditioning equipment and/or
on accompanying sales literature, it's an indication that the
manufacturer has certified the performance of the equipment to ARI.
Look for the ARI seal when you select new equipment.

What is an air conditioner?
---------------------------

Taken literally, air conditioning includes both the cooling and
heating of air, cleaning it and controlling its moisture level:
conditioning it to provide maximum indoor comfort.

For our purposes, we'll refer to air conditioning as most people
think of it: the process of cooling air for comfort inside homes and
buildings.

Engineers define the process as one in which a system of mechanical
components-usually including a compressor, a fan, condenser coil,
evaporator coil and a chemical refrigerant - extracts heat from indoor
air and transfers it outside, leaving the cooled indoor air to be
recirculated.

The cleaning function of air conditioners is performed by filters
which remove dust from the air. In some systems, the filters are
permanent and can be washed periodically to remove accumulated dirt.
Most systems have disposable filters which can be replaced. When
filters become clogged, they restrict the flow of air and cause the
system to operate inefficiently.

Is home comfort a new idea?
===========================

As far back as the ancient Egyptians, Greeks and Romans, people have
been trying to control their environment. Early civilizations used
air blown over wet mats to cool their homes. British miners improved
their working conditions in the mid-16th century through the use of
then-new ventilating fans.

In 1902 mechanical cooling equipment began to appear in buildings in
New York City. Thirty years later, what had become known as "air
conditioning" was first used in homes and apartments.

Today air conditioning has become much more than just a matter of
comfort. Certain important processes, such as computer operations,
would not be possible without reliable air conditioning systems to
keep electronic circuitry from overheating. Extremely warm, humid
parts of the United States and the world would have remained
undeveloped without the means to control temperature and humidity.

More than ever, air conditioning is an integral part of our lifestyle.

What is a heat pump?
--------------------

One kind of air conditioning system is called a heat pump. In the
summer, a heat pump is exactly like a conventional air conditioner.
It collects heat from the air in your home and expels it outside.
But in winter, the whole process is reversed. Heat is extracted from
outside air and circulated through the house. A heat pump takes the
place of a furnace.

The heat pump can do this because heat exists in all air. Even cold
winter air contains heat. For the coldest days, many heat pump
installations have a booster electrical resistance heater that
automatically switches on to supplement the heat brought in from
outside.

Why a heat pump?
================

Rising energy costs and shortages of certain fuels have contributed
to the rising interest in heat pumps. By significantly reducing
energy consumption, heat pumps can result in major savings on monthly
energy bills for many homeowners.

It's the heating cycle that accounts for the significant energy
savings that are produced by heat pumps. Unlike a furnace that turns
fossil fuel or electricity into heat, the heat pump collects heat that
already exists in the outdoor air by means of its refrigeration cycle.
This means the heat pump can supply from 1.5 to 2.5 times more heat
than the energy it uses, depending on efficiency of the heat pump and
geographic location.

For example, a heat pump can mean savings of 30 to 60 percent on
electric heating bills because it uses 30 to 60 percent less energy
to supply the same heat as an electric furnace with a resistance
heating element. A measure of this advantage of the heat pump is the
Heating Seasonal Performance Factor (HSPF). The higher the HSPF, the
more efficient the unit.

The geographical factor
=======================

During the heating season, the heat pump's efficiency increases on
mild days and decreases on cold days. The Heating Seasonal
Performance Factor (HSPF) therefore is higher in a mild climate than
in a region where winters are severe. For this reason, many early
heat pumps were installed in Southern sections of the country.

Through the years, improvements in design have broadened the
geographical range of heat pumps to almost every section of the
country. While the HSPF of a heat pump will be lower in areas with
colder winters, the heat pump will still be more efficient than other
electric heating systems in that area.

How much does it cost?
======================

In most areas the initial costs of heat pumps are competitive with
high efficiency fossil fuel heating/cooling systems. This makes it
possible for the cost of owning and operating a heat pump to be
comparable to or lower than alternative heating/cooling systems,
depending on the cost of energy.

Despite the higher installation cost, the heat pump's efficiency can
produce significant savings on monthly heating costs. This makes it
possible for the cost of owning and operating a heat pump to be
comparable to or lower than alternative heating/cooling systems,
depending on the cost of energy.

Actual energy costs vary widely by region. Your local utility can
help you estimate what it would cost you to operate a heat pump in
your area. Methods used to calculate costs of unit operation must
conform to Department of Energy regulations.

Should I buy a heat pump?
=========================

Here is a list of things to consider:

Initial Cost

Get two or three contractors to estimate the installation cost of a
heat pump for your home versus the cost of an alternative heating/
cooling system.

Operating Cost

Get an estimate from your utility on the energy cost of a heat pump
versus the cost of an alternative system.

Payback

If the heat pump installation costs more than an alternative system,
figure out how many years it will take your heat pump to pay back its
higher initial cost with lower annual operating costs. You can
approximate this by dividing the estimated annual operating savings
into the extra cost you pay for a heat pump installation.

Service and Maintenance

Make sure the contractor you deal with is an authorized heat pump
dealer. Ask about an extended warranty program for your heat pump.

Getting the most out of your air conditioner
--------------------------------------------

Most air conditioners come complete with an owner's manual. If you
have a system and can locate the manual, it is a good place to start
finding ways to operate your system most efficiently. Tips on
maintenance and efficient operation are usually an integral part of
these manuals.

In this Guide, we have assembled information which, in addition to the
manufacturer's recommendations, should help you get the most comfort
from your system at the least cost.

Operation of an air conditioning system is a lot like an automobile:
efficiency depends greatly on the way it is maintained and operated.
Cars give better mileage and last longer when they get proper care
and attention and are driven moderately. The same thing is true of
air conditioning systems.

Clean the filter
================

Air conditioning systems do more than just cool the air. They lower
humidity, and also remove dust and dirt by moving the air through
filters.

When these filters become clogged with dirt, the system must work
harder to do its job. This wastes energy and can make utility bills
rise. Depending on the amount of dust in the air, filters can become
clogged in just a month or two of operation. Most residential systems
have disposable filters. These should be checked every two months
(once a month during peak use) and replaced when necessary. Permanent
filters should be cleaned in accordance with the manufacturer's
instructions. Under no circumstances should you operate your system
without filters. To do so could lead to a need for more frequent
cleaning of the heat exchangers.

Air leaks are costly
====================

Some people like to "help" their air conditioner by opening doors and
windows on warm days. But doing so just lets all the cool,
dehumidified air rush outside and lets in the hot, humid air. The
more your home seals out heat, humidity, and dust, the more
efficiently your system will do its job.

Insulation helps
================

Most people think of thermal insulation, storm windows and
weatherstripping in connection with reducing heating costs. But the
benefits of these energy conservation measures apply to cooling as
well.

The amount of insulation your home needs, as well as the number of
hours per day and days per year your air conditioning system works,
varies greatly from area to area. To determine the correct amount,
consult a building materials dealer or insulation contractor where
you live.

Weather-stripping, which plugs holes and gaps around doors and windows
not only blocks out drafts in colder weather, but also helps lock in
cool air on warm days and nights. Closing these air leaks will help
significantly in maintaining your comfort and reducing energy use.

The sunlight which streams in windows in the winter can provide a
great deal of heat inside the home. But that same sunlight during
summer or in warmer parts of the country can make an air conditioning
system work harder than it should. Insulated or thermal windows can
help. Draperies and shades pulled over the windows when the sun is
hitting them directly (especially in late afternoon) will reduce the
cooling load significantly. Some people install awnings over windows
and doors to provide shade.

Trees and shrubs strategically planted can also provide welcome shade
and protection from direct sunlight.

Check ductwork
==============

Increased attention is being placed on the ductwork system that
distributes the cool air throughout the house. Have a qualified
person check your ductwork periodically to ensure appropriate sections
are insulated, and the joints and seams are not leaking.

More cost-saving tips
=====================

We've talked about heat coming into the home from outside. But the
operation of appliances can generate heat and humidity inside, as
well. When they're operating, washers, dryers, ovens and ranges can
put out both heat and moisture. Using these appliances during the
warmest times of the day, when your cooling system is working hardest,
just adds to the burden. By scheduling washing, drying, baking and
cooking for mornings or evenings when it is cooler, you can remove
this extra burden from your air conditioning system.

An exhaust fan near an oven or range can help remove not only some of
the excess heat but also uncomfortable humidity from cooking.
Similarly, make sure your clothes dryer is vented outside.

Leave your thermostat at one setting.

Preventive maintenance is the least expensive kind. Not only that,
but also keeping your system in top shape through regular checkups is
the best way to ensure it will keep working for you when you need it
most.

The best time to have your system checked by a competent service
technician is in early spring, before the cooling season starts. In
warm climates, mid-winter is the best time.

Many firms offer a service contract which provides routine
maintenance, including lubrication of motors, tightening of belts
and checking of refrigerant level. There are some maintenance checks
you can make yourself. Check your owner's manual.

Replacing an old air conditioning system
----------------------------------------

The useful "life" of an air conditioner can vary greatly. Such
factors as climate, maintenance care, and quality and capacity of the
original equipment can increase or decrease the service a system will
give by months and even years.

On the average, a residential central air conditioner will last from
10 to 15 years. When a unit begins to show its age, it is usually
major components of the air conditioner, such as motors or the
compressor, that wear out. In any case, the homeowner is faced with
a decision on whether to patch up the existing system or replace it
with newer equipment.

In the short run, replacing failed components will usually cost the
least amount of money. But in so doing, the homeowner may be missing
an opportunity to greatly improve the overall efficiency of the system
and, thereby, save significant amounts of money in operating costs.

In recent years, manufacturers of air conditioners have made dramatic
progress in increasing the efficiency of the units they produce.
Therefore, it may make more economic sense to put the cost of repair
onto a new, more efficient unit which will immediately bring down
operating costs. Eventually, the more efficient unit should "pay for
itself" through decreased utility bills. In the meantime, a new unit
will provide the added advantage of greater reliability and warranty
protection.

Selecting the eight size of equipment
=====================================

How big a unit should you select for your home?

A competent air conditioning contractor, after a thorough inspection
of your home, can determine how much cooling capacity is required to
keep your home comfortable.

(Comparative 10-Year Costs of SEER 10 and SEER 12.5 Systems - Graphic)

It is important to select a correctly sized unit. Too large a unit
will cool the space but will not run long enough to remove humidity.
The result will be a cold, clammy feeling within the home.

Too small a unit may mean that you will not attain the degree of
coolness you want on very hot days, no matter how long the system
runs. If you set the thermostat at 78 degrees, an air conditioner
which is too small for the space may only be able to reduce the
temperature to 85 degrees on especially hot days.

Efficiency ratings: what SEER means to you
==========================================

The purpose of rating the efficiency of an air conditioner is to
indicate the relative amount of energy needed to provide a specific
cooling output. The more efficient the equipment, the less energy
will be used to do the same job.

It's similar to the miles-per-gallon ratings for automobiles. Instead
of mpg, central residential air conditioners now use the designation
SEER which stands for Seasonal Energy Efficiency Ratio.

Previously the air conditioning industry used the term EER, which
stood for Energy Efficiency Ratio. This was a simple mathematical
ratio of cooling output measured in British thermal units per hour
(Btuh) versus electrical power input (watts). Recently the U.S.
Department of Energy developed a more complicated test method which
rates the performance of a unit over a wide range of operating
conditions. The result (SEER) is indicative of the unit's operation
throughout the cooling season.

When purchasing a new air conditioner, you should be aware of SEER
ratings and what they mean. From the boxed example you can see that
the higher-efficiency unit would save $108 (20 percent) each cooling
season. Obviously this amount will vary in real-life situations
depending on (1) whether the unit operates more or less than the
1,500 hours used in the example; (2) family size and living habits,
and (3) the electric rates. (Your local electric utility should be
able to provide information on cooling load hours for your area as
well as electricity rates.)

Nevertheless the example does illustrate that higher efficiency
results in lower operating costs. Since the higher-efficiency model
is often more expensive, you may want to calculate the payback period
in which it will "pay for itself" in terms of lower utility bills.

Selecting an installer
======================

A quick glance at the Yellow Pages of your telephone directory will
reveal that there are, in all likelihood, a number of firms which
sell and install heating and cooling systems.

How do you pick the right one?

You may already have a preference for a certain manufacturer based
upon your favorable experience or that of a friend or neighbor. In
that case, look for firms that sell and service that particular brand
or product.

Or you may have heard about a contractor who does particularly good
work.

If you have no preferences or references, call two or three firms and
ask them to inspect your home and make proposals, including cost
estimates. Don't be bashful about asking for details about the firm's
experience, names of customers, its long-term stability and the expert
se of its staff. Reputable contractors are always happy to tell you
everything you want to know about them. Beware of the one who is
evasive or who brushes aside inquiries.

In any case, the installer should make a personal visit to your home
and inspect your present heating/cooling system.

You should not assume that replacing your existing equipment with one
of similar size is necessarily the correct thing to do. The
contractor should calculate the cooling load and give you a copy. If
there are significant variances between the recommendations of
different contractors, you might ask for a recalculation.

The best time to buy
====================

If you call an air conditioning contractor in midsummer, you may find
the firm so busy that it won't be able to serve your needs for
several weeks.

You'll get more favorable time and attention if you contact
contractors earlier in the year, in late winter or early spring.
Depending on their work load, that may also be a time when they are
more willing to bargain on the total system cost. Don't expect
contractors to always offer enormous discounts during the "off season.
In the warmer parts of the country, successful contractors are busy
year-round. No matter where they are, contractors like all business
people must operate within a certain minimum profit margin in order to
stay in business. Beware of the contractor who offers
unrealistically low prices. It may mean corners are being cut in
crucial areas.

Warranties and service contracts
================================

The warranty on your equipment will vary according to the
manufacturer. Make sure you fully understand the terms of the
warranty. If you are uncertain about any provision in your warranty,
ask your contractor to explain its meaning. If necessary, call the
manufacturer for an explanation.

Many dealers and contractors offer service contracts which call for
periodic maintenance of equipment and repairs, as needed. The fee
for such contracts is usually well worth the investment.

Leave your thermostat at one setting
------------------------------------

If you walk into your home and find it stifling hot because the air
conditioner was turned off, don't be tempted to move the thermostat
to a very low setting to cool the house faster. Setting the
thermostat lower than usual will not produce more or "colder" air.

Actually this probably will waste energy. There is a good change you
would forget to change the thermostat back to its normal setting,
forcing the system to work longer then necessary to reach a cooler-
than-intended temperature level.

While the system is running, it's best to leave the thermostat alone.
Constantly setting the control up or down may waster significant
amounts of energy.

Naturally, when the outside temperatures cool down, you may want to
turn off the system and let nature handle the cooling. Consider the
humidity level outside, though, before opening things up. Your air
conditioner has been working to remove moisture from the air inside
your home. Opening doors or windows and letting in highly humid air
for a few hours in the evening may be counterproductive in the long
run.

At night-- or when you'll be away from the house for extended
periods of time-- you probably will want to make energy saving
adjustments to the thermostat setting by raising the desired
temperature. But for normal daytime activities, find a comfortable
level and leave the thermostat at that setting.

Adding air conditioning to an existing home
-------------------------------------------

As real estate costs continue to escalate and the cost of commuting
from distant suburbs climbs steadily, many people are turning to the
purchase of older homes closer to urban centers.

Although such homes offer many attractions, including larger rooms and
mature trees, they often lack a central air conditioning system.
Families used to the benefits of air conditioning may want to add this
basic feature to the remodeled older home.

The most important factor to consider is the presence or absence of
ductwork in the house. If the existing system uses steam or hot water
in radiators, that usually means there are neither air ducts in place
nor a central blower.

In such cases, ductwork may be installed in the basement and/or attic
or during a major remodeling when the contractor can open walls,
install the ductwork and finish the walls as necessary. Otherwise the
ductwork must be routed where it might be visible.

If the existing heating system is of the "forced air" type,
incorporating a blower and ducts, then addition of air conditioning
should be comparatively simple. Essentially, all that is necessary
in most cases is the addition of a cooling coil, the outdoor
condensing unit and the proper controls.

However, modification or replacement of existing ducts might be
necessary if they are too small. Your heating/cooling contractor can
determine that.

As in all other cases, choosing the right contractor is important. In
an existing home where ductwork must be added, it will take more
thought, planning, and ingenuity to get the job done.

Another important factor to check is your power supply. The
contractor or your local electric utility can determine if your
present electrical power supply is adequate to handle the added load
of an air conditioner or a heat pump.

The size of the unit must be selected carefully. Too large a unit
will result in short operating cycles which will not adequately remove
humidity, resulting in a cold, clammy feeling. Too small a unit will
mean that you may not be able to attain a comfortable temperature on
the hottest days.

Along with your new air conditioning system, you should take a close
took at the energy efficiency of the structure. It would not be
cost-effective to install a high-efficiency unit in a house that was
poorly insulated or drafty; the remodeling phase would also be the
best time for caulking, weatherstripping and insulating.

Your local utility company is available to perform an energy audit of
your home. In some cases there may be a fee for this service. They
ill inspect the structure and give you detailed recommendations on how
to improve its energy efficiency. They can give you an estimate of
what such measures will cost and approximately how much you can expect
to reduce your energy costs by installing them. They may even help
you arrange financing. It's well worth the small effort to give them
a call.

Buying an air conditioned home
------------------------------

When buying a home, whether it is new or has been lived in, many
consumers find that the decision on air conditioning already has been
made by the previous owner or the builder.

Because the heating/cooling system is such an important part of a home
you may want to evaluate the system as part of your decision-making
process on whether or not to buy. Some questions you might ask:

* Is the system adequate for the size of the home?

* Has the system been properly maintained and is it in good condition?

* Is the equipment of the high-efficiency type, or is it likely to be
an energy-waster?

If the existing system is unsatisfactory for some reason, you might
want to consider modifying or replacing it and then including that
cost in your total home financing package.

Size of unit
============

For reasons explained earlier, a correctly sized unit is important.
If you have doubts about the adequacy of the system, you may want to
ask a local contractor for advice. Describe the type of house, the
approximate square footage, the insulation level, and the cooling
capacity of the installed unit (expressed in Btuh).

If the unit is drastically undersized (or oversized) the contractor
will probably be able to tell you.

Condition of equipment
======================

An air conditioner which is in poor condition could mean big repair
bills after you have moved in. There are some things you can look for
before closing the transaction.

If the equipment is more than 10 years old, it can generally be
assumed that certain repairs may be needed in the near future.

Turn the unit on and listen to it. If the outdoor fan or indoor
blower makes a clattering noise, that could mean its bearings are
worn out. If belts squeal, it may be an indication of little or no
past maintenance.

Check the thermostat. Lower or raise the setting and see if the unit
responds. Listen for peculiar noises when the unit starts or when it
shuts off.

These are only superficial indicators of a unit's condition,
analogous to driving a car "around the block" to see how it runs. If
you want a more reliable evaluation, have a contractor conduct a
thorough examination of the system. Although some firms may provide
such assistance free of charge, others may require a nominal fee.

Another source of advice and assistance is the Customer Services
Department of your local electric or gas utility. Most utilities have
active programs designed to help their customers conserve energy. You
can often find a knowledgeable, friendly person at your utility.
Explain your needs and ask if they could provide an (c energy audit"
of the home.

Determining energy efficiency
=============================

Is the home you are considering for purchase an "energy glutton"?

Aside from the number of occupants and their living habits, there
are two other things which will influence the energy consumption of a
home:

1. The thermal integrity (or "tightness") of the structure;

2. The relative efficiency of the heating/cooling system.

Engineers refer to the outside walls, floor and roof of a structure
as the "thermal envelope." Think of it in terms of how much heat and
cold goes out or comes in through that envelope. The less change in
temperature which the structure allows, the more energy efficient it
is.

Depending on what part of the country you live in and the climate
there, proper thermal insulation can make a big difference in energy
consumption.

Storm doors and windows, weatherstripping, and other conservation
measures will also deter-mine the energy performance of the structure.
The absence of such features, particularly in severe climates, can be
a warning of higher than necessary utility bills.

Here, again, your local utility or air conditioning contractor can
help you evaluate the structure. A little time and effort before you
commit to buying could save you big dollars in the years ahead.

The relative efficiency of the air conditioning system can also be a
significant cost factor. In recent years, the air conditioning
industry has made giant strides toward improving the energy
efficiency of its products. Certain new, high-efficiency models will
cool the same amount of space as an older unit while consuming much
less energy.

Depending on electrical rates in your area, it could be a very
cost-effective move to replace that old, low-efficiency model with
a new one. (See formula on page 19 for calculating cost-effectiveness
of various units.)

In any air conditioning equipment, old or new, make sure it has the
ARI Certification Seal on the equipment or the literature accompanying
it. This means that the manufacturer has certified that the unit's
actual output matches its claimed performance.

Index of Manufacturers
----------------------

AAON INC.
2425 South Yukon, Tulsa, OK 74107

AIRMAX, INC.
400 Dean St., PO Box 159, Gilmere, TX 75644

AIRQUEST, Inter-City Products Corp. (USA)
1136 Heil-Quaker Blvd., LaVergne, TN 37086-1985

ALLSTYLE COIL CO., INC.
7037 Brittmore, Houston TX 77041

AMANA REFRIGERATION, INC.
1810 Wilson Pkwy, Fayetteville TH 37334

AMERICAN BEST
5401 East Washington, Phoenix, AZ 85034

AMERICAN STANDARD, INC.
Unitary Products Group
6200 Troup Hwy., Tyler, TX 75707

ARCOAIRE, ACO Operations
1136 Heil-Quaker Blvd., PO Box 3005, LaVergne, TN 37086-1985

ARMSTRONG AIR CONDITIONING INC.
421 Monroe St., Bellevue, OH 44811

ASPEN MANUFACTURING, INC.
5101 Hartwick, Houston, TX 77093

BARD MANUFACTURING CO.
1914 Randolph Dr., Bryan, OH 43506

BENCHMARK MANUFACTURING, INC.
211 South Industrial St., Lindale TX 75771

BRYANT AIR CONDITIONING, BDP Company
7310 West Morris St., Indianapolis, IN 46231

BRYANT AIR CONDITIONING-COMMERCIAL
Carrier North American Operations
Carrier Pkwy Blvd., TR4, Syracuse, NY 13221

CARRIER AIR CONDITIONING
Carrier Corporation
7310 West Morris St., Indianapolis, IN 46231

CARRIER AIR CONDITIONING-COMMERCIAL
Carrier North American Operations
Carrier Pkwy Bld TR4, Syracuse, NY 13221

CENTURY BY HEAT CONTROLLER
1900 Wellworth Ave., Jackson, N 49203

CLARE BROTHERS
258 McBrine Dr., Kichener, Ontario Canada N2R 1H8

COBRA AIR CONDITIONING
Residential Environmental Systems Company
P.O. Box 1667, Indianapolis, IN 46206

COLDPACK AIR CONDITIONING CO.
1600 NW 159 Street, Miami, FL 33169

COLEMAN EVCON AIR CONDITIONING PRODUCTS
Evcon Industries, Inc.
3110 N. Mead, Wichita, KS 67219

COLEMAN EVCON AIR CONDITIONING PRODUCTS-COMMERCIAL
Evcon Industries, Inc.
3110 N. Mead, Wichita, KS 67219

COMFORTMAKER, ACO OPERATIONS
1136 Heil-Quaker Blvd., PO Box 3005, LaVergne, TN 37086-1985

CONCORD
421 Monroe St., Bellevue, OH 44811

CONSOLIDATED INDUSTRIES., CORP.
POB 7800, Lafayette, IN 47903

CONSOLIDATED TECHNOLOGY CORP.
POB A, Old US 60 West, Olive Hill, KY 41164

CRISPAIRE CORPORATION
Hwy 41 North, POB 400, Cordele, GA 31015

CUMBERLAND
6200 Troup Highway, Tyler, TX 75707

DAY & NIGHT AIR CONDITIONING, BDP Company
7310 West Morris St., Indianapolis, IN 46231

DAY & NIGHT AIR CONDITIONING - COMMERCIAL
Carrier North American Operations
Carrier Pkwy Bld TR4, Syracuse, NY 13221

THE DUCANE COMPANY
800 Dutch Square Blvd., Columbia, SC 29210

EUBANK MANUFACTURING ENTERPRISES, INC.
Farm Rd. 2011, Longview, TX 75603

EVENTEMP AIR CONDITIONING
POB 70, Indianapolis, IN 46206

FRASER - JOHNSTON, UNITARY PRODUCTS GROUP
P.O. Box 4022, Elyria, OH 44036

FRASER - JOHNSTON, UNITARY PRODUCTS GROUP - COMMERCIAL
P.O. Box 4022, Elyria, OH 44036

FRIEDRICH AIR CONDITIONING CO.
4200 N. Pan Am Expressway, PO Box 1540, San Antonio, TX 78295

FUJITSU GENERAL AMERICA, INC.
353 Route 46 W, Fairfield, NJ 07004

GOETTL AIR-CONDITIONING, INC.
3830 E. Wier Ave., Phoenix, AZ 85040

GOODMAN MANUFACTURING CORPORATION
1501 Seamist, Houston, TX 77008

GUARDIAN AIR CONDITIONING
Evcon Industries, Inc.
3110 N. Mead, Wichita, KS 67219

HEAT CONTROLLER, INC.
1900 Wellworth Ave., Jackson, MI 49203

HEAT PIPE TECHNOLOGY, INC.
15803 N.W. 140th st., Alachua, FL 32615

HEIL, Inter-City Products Corp. (USA)
650 Heil-Quaker Blvd., Lewisburg, TN 37091

INTERTHERM, Nordyne Inc.
1801 Park 270 Drive (Suite 600), St. Louis, MO 63146

KENMORE
3333 Beverly Rd., Hoffman Estates, IL 60179

KENMORE HEATING AND COOLING PRODUCTS
3333 Beverly Rd., Hoffman Estates, IL 60179

KOLDWAVE, Division of MASTAK, Inc.
8100 N. Monticello Ave., Skokie IL 60075

LENNOX INDUSTRIES, INC.
1600 Metro Dr., Carrollton, TX 75006

LUXAIRE, UNITARY PRODUCTS GROUP
P.O. BOX 4022, Elyria, OH 44036

LUXAIRE, UNITARY PRODUCTS GROUP - COMMERCIAL
P.O. BOX 4022, Elyria, OH 44036

MAJOR EQUIPMENT DISTRIBUTORS
1320 N W 65th Place, Ft Lauderdale, FL 33309

MARATHERM, Aco Operations
1136 Heil-Quaker Blvd.,POB 3005, LaVergne, TN 37806

McQUAY INTERNATIONAL
13600 Industrial Park Blvd., Minneapolis, MN 55441

MILLER, Nordyne Inc.
1801 Park 270 Drive Suite 600, St. Louis, MO 63146

MITSUBISHI ELECTRONICS, AMERICA, INC
6100 Atlantic Blvd., Norcross, GA 30071-1305

MITSUBISHI HEAVY INDUSTRIES AMERICA, INC
3070 East Victoria St., Rancho Dominguez, CA 90221

MOBILETEMP
1501 Seamist, Houston, TX 77008

MONCRIEF, UPG
745 Industrial Pkwy West, Elyria, OH 44035

MONCRIEF, UPG - COMMERCIAL
745 Industrial Pkwy West, Elyria, OH 44035

NATIONAL COMFORT PRODUCTS
539 Dunksferry Rd., Bensalem, PA 19020

NATIONAL PLUMBING STORES
POB 1050, Columbus, OH 43216

PAYNE AIR CONDITIONING, BDP Company
7310 West Morris St., Indianapolis, IN 46231

PAYNE AIR CONDITIONING - COMMERCIAL
Carrier North American Operations
Carrier Pkwy Bld TR4, Syracuse, NY 13221

RHEEM MANUFACTURING COMPANY
Air Conditioning Division
5600 Old Greenwood Rd., PO Box 17010, Fort Smith, AR 72917

RUUD AIR CONDITIONING DIVISION
Rheem Manufacturing Company
5600 Old Greenwood Rd., PO Box 17010, Fort Smith, AR 72917

SANYO FISHER (USA) CORPORATION
21350 Lassen St., POB 2329, Chatsworth, CA 91313

SOLITAIRE SYSTEMS, INC.
16141 N. Outer Forty, St. Louis, Mo 63017

SPACE PAK, a Mestek Company
206 N. Elm St., Westfield MA 01085

STYLE CREST PRODUCTS
600 Hagerty DR., Fremont, OH 43420

SUMMIT MANUFACTURING, INC.
210 Maxine, Fort Worth, TX 76117

SUN MANUFACTURING CO., INC.
Vienna Industrial Pk., PO Box 559, Vienna, GA 31092

SUPERIOR COILS, INC.
4015 E. Loop 820 South, Fort Worth, TX 76119

TADIRAN
575 Lexington Ave., New York, NY 10022

TEMPSTAR, Inter-City Products Corp. (USA)
1136 Heil-Quaker Blvd., LaVergne, TN 37086

THERMO PRODUCTS, INC.
POB 217, North Judson, IN 46366

TRANE COMMERCIAL SYSTEMS GROUP
7610 Industrial Hwy, Macon, GA 31206

TRANE UNITARY PRODUCTS GROUP
6200 Troup Hwy., Tyler, TX 75707

UNICO, INC.
4160 Meramec St., St. Louis, MO 63116

UNITED REFRIGERATION INC.
11401 Roosevelt Blvd., Philadelphia, PA 19154

U.S. A/C PRODUCTS
8273 Moberly Lane, Dallas, TX 75227-2388

WEATHERKING AIR CONDITIONING DIVISION
Rheem Manufacturing Company
5600 Old Greenwood Rd., PO Box 17010, Fort Smith, AR 72917-7010

WINCHESTER
745 Industrial Parkway West, Elyria, OH 44035

YORK UNITARY PRODUCTS GROUP
P.O. Box 1592, York, PA 17405