I need another copy of my R22 license to repair A/C units.
I have been in A/C -Refrigeration business in Mississippi for years. My home burned a year ago and I need my R22 license to buy freon and parts from new A/C Businesses in the area. How do I get another copy of my license or a new one.
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If your going to pay that much just have them put in a new unit. It is not that much more and you can get free financing. All the repairman can do is guess and keep putting in new parts till it works. Had a new unit put in and it still didn't work found out it was a bad thermostat. But at lest we don't have the repair bills or high electric bill anymore so it paid for its self in saved money.
Some HVAC 'experts' install coil lines without a pressure outlet. (ecspecially older units) In which case, you will have to install one. Usually they are located outside very close to the compressor unit on the inflow copper line. If not present, you can chase the lines back to the cooler head in the furnace/cooling unit plenum. It would be visible at some point in the lines if it was installed in the first place.
You say 2 to 3 years... I'm assuming the unit is older than that. Especially being r22. What about the first 10 years??? Normally you will get 400 to 500 sqft per ton of cooling, but, that depends on heat load calculations. If the unit wasn't big enough you would have had this issue 10 years ago, not when the system kept running low on refrigerant. At first guess I would say a 2 ton unit is not big enough but if it worked fine for 10 years...wuth all that in mind, if it were me, (a seasoned professional) I would spend 1800 to fix my 15 year old r22 unit before I spent $4000 on a new r410a piece of junk. Best Wishes!!
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.
the evapator coil has nothing to do with what kind of referigent the unit uses. R-22 is still in use in most home units. R410a puron has only been in use for 10 years or so. if the unit is older than that it's most likely a r-22 unit. Either way it requires a federal license to purchase. you do not want to mix referigents it will cause problems
A 30lb bottle or R22 Refrigerant your cost would be $650. As a Licensed Refrigeration Mechanic, I would charge 4 hour minimum for leak check and repair. The hourly charge is $75 and the Refrigerant which is extra to the price is $35 - 40 per pound. As the price of R22 Refrigerant goes up in price as it is being phased out per Government Regulations, you will see $75 - $100 per pound +. As for my pricing, my fellow workers say I charge too cheap. If you take $650 and divide it by 30, it would be $22/pound, but it can only be delivered to you and charged into your unit by a Licensed Refrigeration Mechanic...then the labor comes into effect for all of this. So in an nutshell, if you were charged $30 - $75 / pound , I think you did well. I hope this clears it up.
You did not say what the problem was diagnosed as but I suspect that your service technician is going to change the compressor and dryer. This unit even only 7 years old is a R22 unit which cannot be sold anymore. It is also only 10 SEER where new models are a minimum of 13 SEER (produces 13 Btu's per kilowatt). If you installed a new unit the coil in the duct will need to be replaced along with the outside condenser. If the cost of a new one is $1000 or less over the cost of repair, I would go with a new system.
Sounds like the compressor has gone out or at least the electricals on it. You can replace the relay if that is all it is but at 26 years I would seriously consider replacement. The newer units are more energy efficient and the insulation in your unit has degraded with the years. Eric