Your first option would be to ask friends or family if they have any reccomendations. The next option would to browse online or the yellow pages for hvac companies in your area. Contact several and get quotes from each of them to find the best deal.
You can get information about air condition repair by visiting your local home depot. Also you can check online or try this website: http://www.howtorepairairconditioners.com/ Air condition repair is complex and should be handled by professionals.
Wiki how is a good place to find information on how to repair an air conditioner. They have step by step instructions as well as pictures to help guide you in the repairing process.
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http://my-air-conditioner.com/commercial-refrigeration/ is a good website to find commercial refrigeration repair. I don't know much about them but im sure they will do the trick.
The Tell Model 3 was made between 1936-1940 It has a unique cocking link above the air chamber. Approximately 50 were made. This is a very valuable model. In poor condition it is worth around $195 and considerable more than that in Very good condition. I suggest you go online and search the web for "air gun repair" and find someone near you that can repair it. OR see the link below.
Air pollution is in bad condition. It is because of human recklessness.
You can get a 1966 Mustang air condition exploded diagram at auto parts and book stores. Repair manuals are available with various diagrams.
Your best bet is to look on the web for "air gun repair" and find a location to repair it for you.
The engine and AC condition unit diagram for a 1997 Chrysler LHS is found in the maintenance and repair manual. These manual books can be found at an auto part store.
The amount of time to remove and repair your air conditioning unit is dependent upon the exact repairs that are needed. In general, you can remove and repair the air conditioning unit in approximately 2 hours.
The model 21 side by side was made from 1968 to 1972. One in good condition is very valuable, but finding parts for it may be hard. However there are individual shops that repair antique air guns. I suggest you look on the web for "Air Gun Repair" and locate a shop near you to have it repaired. Or you can see the link below.
Model 454 Mfg 1972-82. Crosman no longer repairs this model but you can search the web under "Air Gun repair" and find a location near you to repair it. However remember that this gun in PERFECT condition is only worth about $50 at best.