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How to recharge a Comfortmaker 10 A/C with R22 refrigerant

Looking for instructions on how to recharge a Comformaker 10 A/C system with R22 refrigerant.

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Call an HVAC service company. You can't even buy R-22 without an EPA card. And you'll need to proper set of gauges to read the high and low side pressures and, to do it right, be able to compute the dry/bulb/wet bulb temp to determine the proper charge with a charging chart.

Posted on May 26, 2010

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Is it better to by air conditioners with R - 410 GAS OR R - 22 GAS


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Where can I find the specs for an earlier Goodman heat pump?


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Many of these consumer units use low grade copper for their refrigeration connections. The oil is a sure fire indicator of your seemingly correct diagnosis. Unless you have the proper refrigeration tools to repair and recharge the unit it may not be cost effective to try for a repair, as if this is the issue another leak is likely to occur. Many of these units come with 5 year compressor warranties though, so a quick check to make sure the leak is in the refrigerant piping and not on the compressor itself may be worthwhile. If your warranty has not run out it could be beneficial to find the exact source of the leak.

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I have a Mitsubishi MS-XV07UV air con. unit - Have asked a local company for a price to check gas levels and re gas if required - as it uses R22 refrigerant he says it cannot be done is this correct ?


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Try contacting another service company and see if you get the same answer as the first.

Jun 14, 2011 | Heating & Cooling

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I have a model 579 series Duo Therm airconditioner and would like to know how to add freon to it. Blower works fine but does not seem like it gets very cold. My brother in law has the necessary tools and...


Bill, the compressor is recharged just like an automobile's AC unit. However, R22 is very, very expensive and is not required. R14 is now the refrigerant of choice. Plus, it's far less expensive than the old R22 (which is illegal in most places, except in certain applications).

If your brother has all the equipment, like you said he does, there's no need for me to go through all the steps necessary to drain and capture any remaining gas in the system and how to safely recharge the unit. Because he probably already knows all of this. But, hopefully, I did save you some money on the refrigerant gas. Which you can buy from any auto parts store.

Hope this helped you. Please let me know.

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It's possible that you need more refrigerant. There are are gauges/testers available at hardware/auto parts stores to determine refrigerant levels. The problem is easier to deal with if your talking about a car. If the AC unit is for a house, it would require a service man to look at it since they won't sell R22 to unlicensed individuals.

If a quick refrigerant recharge doesn't work you're looking at more costly problems like an AC compressor failure which isn't a do-it-yourself type of repair.

Good luck

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Do a triple evac. Reclaim, flush with r22, reclaim, flush with r22, reclaim, flush with r22, reclaim. install afilter drier. Evac down to at least 200 microns. Recharge. you should be ok.
My concern would be disposing of the old "now blended" refrigerant

Feb 25, 2009 | Goodman Heating & Cooling

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