No matter what name brand (York, Trane, Carrier, Goodman, Lennox, Rheem) of air conditioning and/or heating unit you purchase some time or the other you will need to have that air conditioning and heating equipment checked for a problem and repaired. Even if you have regular air conditioning maintenance done. While there are air conditioning and heating manufacturers that engineer quality into their air conditioning and heating equipment, that equipment is prone to breakdown simply because it is a mechanical/electrical device and will need repair sometime throughout its useful life. Most of the time diagnosing problems is simple and other times it can be a complicated process where the HVAC technician calls in another HVAC technician or even an HVAC manufacturer representative. Residential and commercial heating and cooling is important and you want the best possible HVAC air conditioning and heating service. It does not matter whether you have a Carrier Air Conditioner, Trane Air Conditioners, or need a replacement whatever the manufacturer, it is best to get a qualified technician to look at your system before a decision is made to repair or replace the air conditioner or heat pump systems.