Here's what our customers are saying about our A/C Service and Troubleshooting Manuals.

"This was probably one of the best books on recharging air conditioning that I have seen. The procedures are to the point and the illustrations are great (Love the WIZ charts). I just recently purchased a second book and it is well written and illustrated also! "
Gene M....VA, United States
"The e-manuals are absolutely terrific and a great value for anyone involved in mobile air conditioning. There's no complicated techno-babble here. The theory is presented in a remarkably simplistic manner and supplemented with colorful, detailed graphics. The text and illustrations are cleverly combined to create an excellent resource for anyone seeking to learn or teach air conditioning fundamentals. I highly recommend it. "
Michael G. -
Technical Instructor
Leading US Technical College
"The manual worked for me and has put me in the right direction for the diagnosis and repair of my AC system. Very informative! Thanks Again!"
Marty Homan... United States (July 2006)
"The eBook A/C Manuals are very easy to read and understand. They have a lot of good information in them and for the lay person, like myself , are the best I've seen. Thanks!
Leland G... United States (April 2006)
"I really enjoyed the A/C Manuals I purchased from you. They were very informative and answered the questions I had about my auto A/C system. I liked the colored illustrations and diagrams. I understand auto ac systems a whole lot more after reading your manuals. I am very pleased with the manuals. Thank you for putting together all of that information and experience into a easy to understand eBook."
Bryant Taylor... United States (July 2006)
After Sales Support: "Thank you so much for helping me restore the A/C manuals I lost while switching to my new PC. I really appreciate the care you give your customers. Again thank you!"
Alan Esteron, USA (August 2006)
"I have found A/C manuals very usefull. There has been a lot of new information I have never realised. The information is written in clear english which is easy to understand even for a foreign reader. They are written in a logical way that takes you from a stage to an other.
I think that we couldn’t find a better educational material on the market.

Harri Valkonen, Tip Top Auto Oy, Finland (May 2006)
"I am in the aircraft maintenance business and I install after market A/C systems....I have not had any A/C training only trial and error and what would rub off from engineers.It was getting very difficult to keep up with out a good basic understanding of what I am doing. ....I have purchased the first 3 sections and have read them over and over... Thank you for writing the manuals and making them available. Your manuals are now part of our shop library!"
Arnold Blankenship... United States (December 2006)
"I did find your e-books very informative and I am glad I purchased them. I wish you had a website about automotive breaks as well. .... YOUR SITE IS GREAT!!! ..... Thank you. KEPP IT COOL!!!"
CFF Sam Hindieh... United States (December 2006)
"I have downloaded the A/C ebooks and am now enjoying them. They are all I expected, and more. Ignore any criticism that you may "oversimplify" things when trying to explain how something works. Many times people, especially those who teach for years on a subject, tend to think people have an immediate grasp of things when they throw out a theory or a systems workings (this applies to any subject) and don't even bother with the fine points that are sort of a "connecting link" with a train of thought, and cannot figure out why no one is grasping what they're trying to say. Rarely do they put themselves in the students place, students who don't have the luxury of years of experience.These books very nicely fill in all gaps, and I notice after I've read them, there are no questions to ask-- you've covered it all. Nice stuff; I'll be sure to tell my a/c friends about this site! Thanks much."
Peter Shumbo... United States (August 2006)
"Just a note to let you know how much i enjoyed reading the e book I recently purchased. Downloading was a snap. The information was presented in such a way as to even make a/c theory (which can sometimes be a bit boring) interesting. The thing I liked most was it got right down to the nitty gritty, not an overload of info just the 'meat and potatoes'. Looking forward to my next download. Thanks!"
Pete G... United States
"Good info, in plain simple english with pictures!!!"
Anthony Kolasinski... United States (June 2006)
"The e-books are a great source of info. I would definately recommend them!"
D. Brodell Jr. ... United States (May 2006)
"I got my two A/C manuals and they are just what I needed. You guys really know your stuff. These are the best manuals on A/C service I have ever used. They are easy to understand and the colorful diagrams clearly show how to properly connect equipment."
Dwayne James.. MVAC Tech, United States (June 2006)
"The A/C Manuals are very helpfull. I have learned things I never knew. Its really great to have this type of detialed information available. You can be sure that I will recommend your manuals to my friends.
Lucius H... United States (May 2006)
"I like your books and plan to purchase them all as well as other things on your site. I am just starting out in the A/C field and find your information very informative."
Gary W... United States (April 2006)
"Just wanted to let you know that you provide a great service and product. Downloaded several of your ebook manuals and found them to be nicely illustrated and very informative. Great tips with excellent "Wiz Charts". I have used your technical support once and was impressed by the techs honesty. Will use your products and services in the future. Thanks!
Tom D... United States
"The book was great simple and informative, easy to understand an even better to be able to down load it. Its difficult to find books like this and then when you find them it takes even longer to have them shipped. Get it when you want it is perfect cheaper and no paper!!
Bryan  Meyran... Rum Cay, Bahamas
"I haven't finished with all the manuals I purchased, but so far, I like what I see. Very informative and easy to understand."
Bob H. ... USA
"I have gone through the manual ... and found that it contains a lot of valuable information!
S. Wong... Malaysia
"Great manuals! Found eBooks to be very informative and will be buying more!"
Nick C. ... U.K.
"The manual was very informative with a lot of good content. I would order again...".
J. Thompson ... USA
"The information in the website is what I have been looking for, for a very long time. I also downloaded the free samples and found out quickly that this is the info that will help us out to understand the system." ...
Roberto A....Amsterdam
"I purchased Understanding Superheat. It downloaded and I found it informative."
John G... United States
"The information was exactly what I needed."
Mark T. ... U.S.A.
"I think these e-books are an outstanding value... I thought the book (Section 4-Diagnosing Auto AC Systems) was a great addition to my learning curve into understanding automotive ac system."
Mike H. ... U.S.A.
"The book was very helpful in troubleshootiing my auto air. The questions I have asked over the years about gauge readings are, "Do I add if the gauges reads low? If gauges read high, do I have too much refrigerant?" You have cleared this up for me as the gauge readings are not truly related to the amount of refrigerant in system. Your pictures of gauges were clear and easy to understand."
Earl W. ... U.S.A.

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