The Twin-Volume Edition of Preston's Guide Index to Manufacturer's Specifications has been updated to 2005. It now contains one-half million listings of original factory specifications from 240 manufacturers. Listed are: air conditioners and heat pumps 1960-2005, (including rooftops up to 10 tons); gas (1965-2005) and oil (1982-2005) residential forced-air furnaces. The Index is organized by brand/mfgr., type, model numbers, year's made and original factory ratings for capacity and efficiency. The 928 page, three pound volume is published as two sections- heating and cooling - (within one cover i.e.; Twin-Volume) in a 8 1/4" x 10 3/4" perfect-bound format. Prices start at $125.00 for one copy with discounts for volume orders.

Contractors throughout North America have come to rely on Preston's as their 'replacement bible,' a sales tool that helps them sell more residential and small commercial replacement equipment and systems. Manufacturers such as Trane, Rheem/Ruud, and Lennox use it and associations ACCA. ESL and AirTime 500 recommend it to their members. Preston's Guide users are diverse; from being standard equipment aboard hvac service vehicles; to insurance company claims reference; to home inspectors by the thousands rely on it.

Preston's Guide is independently published and contractors like the unbiased impression they make when carrying it with them on sales calls. They look-up the homeowner's existing hvac equipment in Preston's finding the original manufacturer's specifications for capacity, approximate age and efficiency. The efficiency is then compared with a new, replacement unit's efficiency and the fuel costs savings it will provide. Preston's Guide can help even the least capable salesperson make a credible sales presentation with data that supports a powerful sales message... "Homeowners need to replace aged, low efficiency hvac equipment." With ever increasing utility costs, that efficiency message continues to help propel replacement sales as the largest segment of the $100 billion hvac market.

Preston's Guide is the only product of its type in the world. It is updated every five years, merging new data with the existing data whereupon a completely new edition is generated. What's more, the oldest years are not deleted and the editions keep growing. The 2005 Preston's Guide is now in its sixth edition.

Sample listings shown, below, are typical of The Preston’s Guide:



Click on logo to download a .pdf form for existing users to order the new updated 2005 Edition of Preston's Guide on CD-ROM. You'll receive a fresh, new disk.

Click on logo for information on System Requirements and Installation Guide for Preston's CD software (update and new installs).

Click on logo for an answer to the burning question: "Preston's Guide Energy Costs Comparator doesn't show any energy savings for my replacement furnace compared to the old unit?".

*CD-ROM updated every 2-3 years or as needed

The latest edition of Preston's Guide CD-ROM contains our full comprehensive index to factory specifications through the year 2005. As an added bonus, we have included our Residential Gas & Oil Boiler listings through 2005. Now, you have instant access to over 520,000 listings of makes and models that can be scrolled, compared and printed. Our CD-ROM also features a "Model Number Search" capability that users are delighted with in how quickly they can find a unit’s listing when all you have to go on is a model number. Moreover, you needn't enter all the characters of the model number but rather just the first few and, all matches will be listed.

In addition, Preston’s CD-ROM also features our Seasonal Energy-Cost Comparator allowing you to make a quick comparison of the estimated energy costs of the customer’s old equipment vs. those of your proposed replacement unit. Print these out to include with your presentation to the customer.

Preston’s CD–ROM is a stand-alone database that runs on all versions of Windows and Macintosh Operating Systems. The CD-ROM software includes a license agreement allowing you to make a copy of it on to a single pc’s hard drive. Multiple copies are discount priced to accommodate needing it on multiple computers. It may also be run on a server but is limited to one user at a time. $349.00


Our newest publication is now updated to 2005 putting it into our normal five-year cycle for updating all our products. We hope to yet find the data that will allow us to extend our listings backwards in this publication. Hopefully by twenty or thirty years.$35.00

FYI . . . As you probably know, there are not a lot of technological advancements in boiler design and/or operation. And, boilers can last a very long time. Therefore, manufacturers tend to continue making the same model(s) for a much longer period of time than they would, for example, a furnace.

On-Line Internet Access...from wherever you are!

• Unlimited 24/7 Access • Always Up-To-Date • Fast & Easy To Use

Now, for the first time...Preston's is providing another way for you to access their 520,000-record historical HVAC specifications. These are the original factory specifications, on more than 240 brands, you need to be effective in selling replacement equipment and systems. Included: starting from 1960 for Air Conditioners and Heat Pumps, from 1965 for Residential Gas Furnaces and from 1982 for Oil. There's also boilers from 1996 (Ok, we just started that one) all are listed right up to 2005...a database of over 520,000 records!

The first screen. You'll always start here: When you subscribe; log-on with your username (your email address) and password (you designate it or we'll assign you one); even when you forget your password. It's all here.

Click on "FIND" to display all model number listings (or a long list of all models that start with the same first few characters as you entered) to find.

3. BAM! You're taken to the results screen where a list of up to 50 matching model numbers is displayed. Selecting on one them will re-display just that model's information*. Then return to the intermediate screen, ready to search for another model number.
Get on Preston's site from anywhere, be it Paducka, Tokyo or East Timor, when you need spec information on an existing unit or system...for replacing it, for servicing it with parts, for testing it's performance. You might be in the store, a customers home, in a sales meeting, out in the warehouse or at a parts counter you needn't carry anything with you. Just as long as you can get access to the internet you can quickly and easily find the Original Manufacturer's specifications on just about any unit that's still in existance.

Here's the information each listing gives you
For a given model number and maker/brand listed are:Years model was manufactured, factory ratings for capacity and efficiency;
• heating equipment capacity is in terms of INPUT Btu/h and efficiency is in A.F.U.E.
• cooling equipment capacity is in terms of Btu/h and efficiency is in SEER.

So, if you need this information to make a sales presentation to replace a customer's old equipment you have learned how old the units are (within a range) and the size capacity you'll need to price out and how dreadfully inefficient this customer's stuff is and how much they're likely to save on energy costs with your replacement(s).

A three-month trial Subscription is $60.00 and yearly subscriptions are $125.00

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Preston's Guide On-Line Specs
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