Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
M099
clayfurd91
Member Posts: 1
Will M099 work as a direct replacement if the condenser is above the evaporator coil ? I know 422 has a hard time not sure of the 407 .. has anyone ever tested the difference between the three? Any advice would help.. just don’t want to spend or charge for the 22 but heck they all jumped sky high lol thanks in advance
0
Comments
-
This is really a question for the supply house.
High temp, med temp or low temp?
Mo99 and R-422(B) will operate fine without a change to POE oil but I add some anyway.
R-407 A, B, or C ? Will require mostly POE oil0
Categories
- All Categories
- 86.2K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 422 Carbon Monoxide Awareness
- 90 Chimneys & Flues
- 2K Domestic Hot Water
- 5.4K Gas Heating
- 99 Geothermal
- 156 Indoor-Air Quality
- 3.4K Oil Heating
- 63 Pipe Deterioration
- 915 Plumbing
- 6K Radiant Heating
- 381 Solar
- 14.8K Strictly Steam
- 3.3K Thermostats and Controls
- 53 Water Quality
- 41 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements