AboutCraig HVAC Expert Expertise I have been in the HVAC field for the past 12+ years. I can help with most HVAC questions. I work on commerical buildings for the most part, and have yet to find anything I could not troubleshoot and repair, when repairable. I work on small 1 ton units to a 2500 ton chiller. Troubleshoot air flow, elect, and control problems. I attend regular classes to keep up with the latest and greatest.
Experience I have work in the HVAC trade for the past sixteen years. I work on commerical sites, hospitals, gov't buildings. I can troubleshoot just about anything in the HVAC business.
Education/Credentials 5 years union trade school, VFD training classes, Liebert factory training, some York and Trane factory training.
Question Is there a way to change valves out of a R22 air handler to accommodate the use of a ( R-410-A) puron condenser? I wish to update my two year old system to R410A, and just can't go the cost of both air handler, and condenser.
I have a Carrier Mod. # FK4DNF005 A/H, and would like to match it up with a 682AJ042-C condenser.
Answer You can not use a R-22 evap coil with R-410a. The coil was never rated to run at the pressure of R-140a. The coil is also full of oil, which is nearly impossible to remove. The oil for R22 is NOT compatable with R-410a. It might be possible to get a R-410 evap coil that will fit into the air handler.
