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 ...

Most air conditioners use one of two types of refrigerant: R-22 or R-410A. I've never paid any attention to this detail while inspecting houses because it didn't make much difference, but that's all ...

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?

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 ...

A Windsor Freon expert is alerting tornado victims to watch out for Freon leaks in their air conditioners following the tornado last week. Freon is a class of liquid or gaseous fluorocarbon or ...

Is the air conditioner in your home or office blowing warm? The unit could need service. If you fix it after July 1, however, make sure you do not release any of the refrigerant into the air. If you ...

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 - ...