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HVAC R22 conversion [message #301140] Thu, 26 May 2016 12:27 Go to next message
Dennis S is currently offline  Dennis S   United States
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Has anyone converted a home split HVAC system from r22 to one of the replacements, such as HC22a or M099?

Dennis


Dennis S
73 Painted Desert 230
Memphis TN Metro
Re: HVAC R22 conversion [message #301161 is a reply to message #301140] Thu, 26 May 2016 18:29 Go to previous messageGo to next message
A Hamilto is currently offline  A Hamilto   United States
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Dennis S wrote on Thu, 26 May 2016 12:27
Has anyone converted a home split HVAC system from r22 to one of the replacements, such as HC22a or M099?
Dennis
I think Matt Colie did a roof AC unit once with some success.

A residential unit would be a really bad idea. Someday a professional will work on it and will contaminate some amount of R-22 (could be a lot) when he tries to reclaim what he thinks is R-22 from the HC charged system.
Re: HVAC R22 conversion [message #301163 is a reply to message #301161] Thu, 26 May 2016 19:38 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
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No, I did not.
What I did do and only with limited success was convert an old 12/120 Nocold to HC12A.
Matt


Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
Re: HVAC R22 conversion [message #301166 is a reply to message #301161] Thu, 26 May 2016 20:05 Go to previous messageGo to next message
Dennis S is currently offline  Dennis S   United States
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A Hamilto wrote on Thu, 26 May 2016 18:29
Dennis S wrote on Thu, 26 May 2016 12:27
Has anyone converted a home split HVAC system from r22 to one of the replacements, such as HC22a or M099?
Dennis
I think Matt Colie did a roof AC unit once with some success.

A residential unit would be a really bad idea. Someday a professional will work on it and will contaminate some amount of R-22 (could be a lot) when he tries to reclaim what he thinks is R-22 from the HC charged system.


Thanks for the input.

In this case it is a HVAC person giving the option of a new coil and converting to Mo99, a DuPont substitute for r22.

I have just not heard about Mo99 nor much about other substitutes.

Dennis


Dennis S
73 Painted Desert 230
Memphis TN Metro
Re: HVAC R22 conversion [message #301179 is a reply to message #301166] Fri, 27 May 2016 07:38 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
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Dennis S wrote on Thu, 26 May 2016 21:05
A Hamilto wrote on Thu, 26 May 2016 18:29
Dennis S wrote on Thu, 26 May 2016 12:27
Has anyone converted a home split HVAC system from r22 to one of the replacements, such as HC22a or M099?
Dennis
I think Matt Colie did a roof AC unit once with some success.

A residential unit would be a really bad idea. Someday a professional will work on it and will contaminate some amount of R-22 (could be a lot) when he tries to reclaim what he thinks is R-22 from the HC charged system.


Thanks for the input.

In this case it is a HVAC person giving the option of a new coil and converting to Mo99, a DuPont substitute for r22.

I have just not heard about Mo99 nor much about other substitutes.

Dennis

Dennis,

Mo99 is an alternative to R-410a that is supposed to be the replacement for R-22. It unfortunately requires opening and cleaning the system. R-410a is extremely expensive and so is facing serious resistance in the domestic market.
Why the new coil(evaporator)?
It is not supposed to require any hardware changes to achieve performance to R-22.

The HCXXX refrigerants are still facing a great deal of political pressure because nobody has a patent and so big money is cut out.

Matt


Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
Re: HVAC R22 conversion [message #301185 is a reply to message #301179] Fri, 27 May 2016 10:17 Go to previous messageGo to next message
Dennis S is currently offline  Dennis S   United States
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Hi Matt

Thank you. The evaporator coil is leaking, 18 years old, so new as an option versus repair.
And of course their other option is a new 410 system, both outside unit/compressor and new evaporator.

Dennis


Dennis S
73 Painted Desert 230
Memphis TN Metro
Re: HVAC R22 conversion [message #301187 is a reply to message #301185] Fri, 27 May 2016 10:32 Go to previous messageGo to next message
roy1 is currently offline  roy1   United States
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If the leak is in a joint or u bend I would just fix it. I believe you can find r22 on Craigslist or e bay still at an afordible cost. Just as it happened with r12 the original installed refrigerant r22 is the best choice.

Roy Keen Minden,NV 76 X Glenbrook
Re: HVAC R22 conversion [message #301196 is a reply to message #301187] Fri, 27 May 2016 14:02 Go to previous message
Dennis S is currently offline  Dennis S   United States
Messages: 2976
Registered: November 2005
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roy1 wrote on Fri, 27 May 2016 10:32
If the leak is in a joint or u bend I would just fix it. I believe you can find r22 on Craigslist or e bay still at an afordible cost. Just as it happened with r12 the original installed refrigerant r22 is the best choice.


Thanks Roy. The actual leak location/source has yet to be determined.

Dennis


Dennis S
73 Painted Desert 230
Memphis TN Metro
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