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HVAC CONTRACTORS who know more about old equipment succeed in selling more new replacements. They have found Preston’s Guide to be an indispensable resource by helping them sell more residential HVAC equipment and system replacements. Preston’s facilitates a very credible and successful sales presentation thereby increasing sales and profits for their businesses. In fact, replacement of residential heating and cooling equipment is the largest segment of the $100 billion HVAC market!

Preston's Guides are used by thousands of HVAC businesses. They appreciate its value in facilitating a very effective sales presentation for them (replacement = greater efficiency = energy cost savings). And, that's an easy presentation to make, even for contractors who are not very proficient at selling. How? Simply by looking up the customer's existing equipment in the Preston's Guide and showing them the comparison of age, efficiency and energy costs to operate their old equipment vs. the savings new replacement models will provide. And, in these times of ever increasing energy costs and limited supply everyone listens when you offer to save them money. Especially when the savings will be on their utility bills.

If you're in the HVAC business you will no doubt, appreciate the benefit of referfing to an "independent" reference without ties to any brand(s). Preston's Guide is a must for every sales/show room, salesperson's briefcase, parts counter and service vehicle of your HVAC business. When you know more about the customer's old equipment, you'll be more successful in selling them new replacement equipment!

HOME INSPECTION professionals know that they enhance the value of their inspection reports to customers when information on age, capacity and efficiency of the property's existing mechanical equipment is included. Here, again, the Preston's Guide has proven to be an indispensable resource for their businesses.

PUBLIC ELECTRIC & GAS UTILITIES use the Preston's Guide as a capacity and efficiency reference for upgrade programs and promotions. These often involve outright grant of money toward installation of higher efficiency equipment. Or, a subsidy for low interest financing.

INSURANCE AND WARRANTY COMPANIES rely on Preston's Guide to help them determine the age and size of equipment when claims are made due to flood, fire, etc.


ABCO Refrigeration Supply Corp
The ACT Group
American Home Maintenance

American Home Shield

ASHI (American Society of Home Inspectors)


American Standard
Carrier Air Conditioning Co.

Century Air Conditioning

CFM Equipment Distributors

Corken Steel Products

Cross Country Home Services

Elizabethtown Gas Company

GE Capital

Goodman Mfgr. Co.


HVAC Distributors

International Service Leadership

Inc. Professional Equipment

Johnstone Supply Company

Kansas Building Services Institute

Lennox Industries

National Property Inspections


Rheem Manufacturing Company

Sears Roebuck & Co.

Service Experts
The Trane Company
Union Energy (Canada)
York International
U.S. Department of Energy

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