Refrigerant

Golden_HVAC wrote:
Hi,

The 1993 Factory installed air conditioner would have used R-22. If it was replaced after about 2005, then you might have R-410.

My guess is that it will be R-22.

Why does this guy have a problem bringing along two tanks of freon?

Anyway to answer all those who have been told "It can't be recharged" - I have recharged mine, and it works fine. Yes I installed a port. I have installed ports on window A/C units too. It was more for in-house work, where I was not billing by the hour, but rather spending $40 to save replacing a $650 air conditioner right away. If I had to bill for this job at $75 an hour, the cost would have been more than the $400 value of the air conditioner.

And my work was getting a $200 rebate from the electric company for each through the wall air conditioner with electric heat replaced with a R-410 heat pump that will run at 20F outside temp in the heat pump mode, until the outdoor coil trips a thermostat, that will shut off the compressor and turn on it's electric back up heater.

Good luck with your repair. Hopefully it will run for another 4-5 years before needing to be recharged again. At that time, it would only take a hour to recharge due to having a freon port already installed.

Fred.

Refrigeration techs do not come cheap and GOOD refrigeration techs are extremely hard to find and ANY refrigeration tech that isn't going to cost more than a new RV A/C unit and be willing to climb onto the top of a RV will be pretty much impossible to find.

Not to mention IF the A/C did indeed lose refrigerant the tech MUST find and fix the leak. Not many are going to be willing to do this on the roof of a RV..

Refrigeration techs now days MUST LOG EVERY OUNCE OF REFRIGERANT.. They must account for all of it otherwise they risk losing certifications and possibly fines..

It isn't like to old days when you simply "topped it off" whenever it got low and ANYONE could buy 30 lb cylinders of ANY refrigerant without question..

Hi,

The 1993 Factory installed air conditioner would have used R-22. If it was replaced after about 2005, then you might have R-410.

My guess is that it will be R-22.

Why does this guy have a problem bringing along two tanks of freon?

Anyway to answer all those who have been told "It can't be recharged" - I have recharged mine, and it works fine. Yes I installed a port. I have installed ports on window A/C units too. It was more for in-house work, where I was not billing by the hour, but rather spending $40 to save replacing a $650 air conditioner right away. If I had to bill for this job at $75 an hour, the cost would have been more than the $400 value of the air conditioner.

And my work was getting a $200 rebate from the electric company for each through the wall air conditioner with electric heat replaced with a R-410 heat pump that will run at 20F outside temp in the heat pump mode, until the outdoor coil trips a thermostat, that will shut off the compressor and turn on it's electric back up heater.

Good luck with your repair. Hopefully it will run for another 4-5 years before needing to be recharged again. At that time, it would only take a hour to recharge due to having a freon port already installed.

Fred.

Thank u guys so much. I'm learning a lot.

Low speed fan......no filter material previously used.....dirty evap coil-----ICING UP

Clean Evap Coil, change/clean filter routinely and use high fan


Air movement....just run fan

Popester82 wrote:
Thank u. It was running on low at nite. Wife gets cold easy. Lol. Also we cut a piece of filter element to cover vent. When we got it there was nothing in it to filter.

And that's the problem.

Thank u. It was running on low at nite. Wife gets cold easy. Lol. Also we cut a piece of filter element to cover vent. When we got it there was nothing in it to filter.

Popester82 wrote:
What type of refrigerant does my AC unit use. Last two times we used it it would ice over and once it thawed it would be fine. A friend of mine says it's probably low on Freon and he was asking me what type to bring to the house so he doesn't have to make a second trip I'm not sure if it showed up in my profile but it's a 33 foot 1993 Dutchman classic. There is only one AC unit in the middle Thx.

If your friend had to ask the type of refrigerant they most likely should not be working on it..

I haven't look at one for a while but it most likely will be R22 but there may be a few odd ones that used R500 and a few other versions..

Additionally RV A/C units just like a home window A/C or Home refrigerator DOES NOT HAVE ANY SERVICE "PORTS".. RV A/Cs are not considered "serviceable"..

You friend WILL have to INSTALL service ports in order to be able to check the pressure or add any refrigerant.

If it truly is low on refrigerant, it HAS a leak and adding refrigerant is only a very short term fix. A leak on one of these is not going to be easy or cheap to fix so a new A/C unit would be the better way to go in case of a leak.

Freezing up is not always low refrigerant, high humidity AND running the unit on low fan speed CAN cause it to ice..

Clogged/dirty filter can also cause icing..

Freon is a trademark name of a particular refrigerant.

Also make sure you are operating the fan in "auto" or "Hi" mode. Operating in "low" often results in ice up on the condenser and the unit will not cool. This is more frequent if the humidity is high.
Barney

unless your friend is a "full service appliance guy", he isn't likely to be successful regardless of the "freon type"... there are NO service ports to make any "additions".

Although it could be "low", your problem is more likely an issue with air movement. Check to ensure things are clear and fan is operating correctly to ensure proper air flow.