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Posted on Sep 16, 2009
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Duo therm air

How do i check the freon level in a duo-therm it freezes up where can i get a valve to add more freon?

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moparfanatic

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  • Expert 67 Answers
  • Posted on Sep 16, 2009
moparfanatic
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Unfortunatly with the new laws u are unable to unless u are a licenced refrigeration/ac technician

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How to add freon to my 57915-331 duo therm camper ac?

Normally that would be a closed/sealed system, not rechargeable, from the factory. Don't know what valve your seeing, unless someone has retrofitted it with valves for recharging prior to you purchasing it. I will say that quite often the reason for poor, or less cooling, than when new, is often due to simply needing a good cleaning of evaporator and condenser coils and fins. Has that been done lately?
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Hi,
They should run 50 -55 F or about 20 degrees less then the indoor air temp... and yes they can be recharged.....

How to add Freon to a Air Conditioner or Refrigeration System
http://www.fixya.com/support/r5638346-add_freon_air_conditioner_or

heatman101
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you can buy a saddle valve, this is a valve you screw in. I am assuming you have the correct freon as where you purchased your freon they should sell the saddle valve. Hope this helped
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My mechanic wants to know how to add freon to my duo-Therm by domestic. Model# 57916-531 It turns on and fan blows but there is no cool air. Where can I get a manual I never received one.

mcdevito75 here, You can contact the units name online. Rechage your self may not be possible as special tools are needed, plus buying the gas would need a license to buy the gas (Freon). Check with your local A/C repair shop.
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Duo Therm Brisk Air not working properly

The short answer is that some are, and some are not. You can tell by opening the unit and checking the refrigerant lines for ports to add freon. There will be one on the smaller diameter high pressure side and one on the larger diameter low pressure side. Both will be covered with screw on caps covering schrader (bicycle tube) valves if your model is rechargable. If is a refrigerant loss issue, you'll need to locate and repair the leak before you add refrigerant (R-22). If yours is of the type that can be recharged, for making a repair and adding freon, I'd say that you're looking at around $200-$250 USD.
I cannot recommend anyone around Spokane.
Best Regards, --W/D--
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I have a duo therm a/c roof top unit that is not cooling properly it has been approx 2 years since the unit has been run I have checked breakers and fuses in breaker box I removed the cover from unit the...

You have a leak in the system that needs repair. If you have to add freon to system there is a leak. You need a service tech to do the repair. If it is out of gas you may to replace it. Leaks do not correct themselves. Russ
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needs freon. valve must be installed on unit in order to charge. if you know nothig about freon, call a repairman. Check craigslist.com
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