Originally Posted By: ecrofutt This post was automatically imported from our archived forum.
Printed Book, 704 pages, through year 2000
(includes condensers, heat pumps and gas & oil
furnaces, all in one cover)
Quantity Price Each Quantity Price Each
One $75.00 6-10 $62.00
2-5 $68.00 11-20 $58.00
PRESTON?S GUIDE CD-ROM?
Listings through 2001, + 2-year update
Quantity Price Per User Quantity Price Per User
One $135.00 6-10 $105.00
2-5 $115.00 11-20 $95.00
I bought 20 Preston Guides for my self and friends .
I know of one other and my self who felt they sure are not worth the price . I had a person who wanted one so I gave him mine my buddy also gave his away . No idea how the rest are doing . My thoughts . Would be interested to hear from any one who has the Guide your thoughts ..
Originally Posted By: rwand This post was automatically imported from our archived forum.
I don’t use one. I use my keen instincts and analytical skills to try and determne age.
I occassionaly use the Carson Dunlop reference book that dates furnaces and A/C, but it too is not great either. Why manufactures just can't put a logical data plate that includes date of manufacture is beyond me, but when did common sense prevail? It would make things so much easier. Some manufactures do put the manufacture date clearly on their products. Saw a Lennox unit with date of manufacture listing month and year. Too easy.
I was manufactured on June 21/56. 
Raymond Wand
Alton, ON
-- The value of experience is not in seeing much,
but in seeing wisely. - Sir William Osler 1905
Originally Posted By: Allen This post was automatically imported from our archived forum.
Rwand wrote
Quote:
Why manufactures just can't put a logical data plate that includes date of manufacture is beyond me, but when did common sense prevail? It would make things so much easier.
Yes I agree, it would make things easier, in a perfect world. But.........
