As commercial HVAC systems age, they may experience leaks. Because these units are considerably larger than their consumer-grade counterparts, a commercial air conditioning refrigerant leak can ...

Q. P.W. of Oak Park asked whether it was worth fixing a small leak in the car’s air conditioning system (Cars, July 10). You replied that for a 10-year-old car, it might be better to “just top off the ...

Q: Is it possible for an HVAC technician to overfill an air-conditioning system with too much refrigerant (my system uses R-22)? For example, if the system needs two pounds, is it possible for the ...

Old air conditioners that leak refrigerant will become more costly to fix starting in 2020, local heating and air conditioning specialists said. Effective Jan. 1, the United States will no longer ...

Dear Angie: I have an old heat pump air conditioner with R-22 refrigerant that leaks out periodically. I've heard of contractors using a leak sealant to correct this problem. Are sealants effective?

Dear Action Line: What is the mathematics on "topping off your air conditioner with Freon?" This costs more and more each year and lasts only a few weeks. - J.C., Tulsa. "Let's clear the air on this - ...

Q: I recently took my Buick into the shop because the air conditioner wasn’t cold. They told me the Freon was almost empty. The shop charged me $169 to recharge the system with the caveat that it may ...