"Ask Adam" Adam has been in the HVAC industry for over 40 years. He has been involved in all aspects of the business from service to sales. His main interest is in customer comfort. How To Size HVAC Equipment Adam Kem, Owner Official Heating & Cooling The most common misconception that homeowners have about HVAC equipment is the fallacy that bigger is better. The rationale is that it doesn't have to run very long to satisfy the thermostat. In reality, the longer the run cycle with less BTU's results in a much more comfortable home. An oversized piece of equipment will short cycle, which can cause premature failure and makes for a very uncomfortable home. With furnaces, short cycling will destroy the heat exchanger and with cooling it results in a cold clammy home. In the last 40 years I have seen many "rules of thumb" for sizing equip- ment. Unfortunately this resulted with the vast majority of equipment being oversized. The manufacturers responded by designing multistage units and introducing variable speed motors. This resolved some prob- lems but not all. The only proven method for sizing equipment is to do a "Manual J" load calculation. These load calculations vary based on geographic locations. Our area has completely different design criteria as opposed to Arizona. Within the last few years ARCA (Air Conditioning Contractors of America) changed the design criteria in many regions, including ours. The current heating standard is to be able to heat a home to 70°F with an outdoor temperature of 2° F. For cooling it is 75°F inside with an 89° F temperature outside. The crux of the matter is to make sure when replacing your old HVAC equipment, to only use N.A.T.E. certified companies that adhere to strict factory standards. If you have any HVAC questions, call me direct at 815-404-4634 or email adam@officialhvac.com NOW HIRING EXPERIENCED HVAC SERVICE TECHNICIANS CALL US TODAY! Join our growing service department. Position available for an experienced HVAC Service Technician. Minimum 1-2 years Residential HVAC experience preferred. Call or submit resume to service@officialhvac.com OFFICIAL Heating & Cooling 800-350-HVAC (4822) officialhvac.com EACTORY AUTHORIED DEALER NATE Carrier BBB 4 Time A Honoree Tunto the eperts "Ask Adam" Adam has been in the HVAC industry for over 40 years. He has been involved in all aspects of the business from service to sales. His main interest is in customer comfort. How To Size HVAC Equipment Adam Kem, Owner Official Heating & Cooling The most common misconception that homeowners have about HVAC equipment is the fallacy that bigger is better. The rationale is that it doesn't have to run very long to satisfy the thermostat. In reality, the longer the run cycle with less BTU's results in a much more comfortable home. An oversized piece of equipment will short cycle, which can cause premature failure and makes for a very uncomfortable home. With furnaces, short cycling will destroy the heat exchanger and with cooling it results in a cold clammy home. In the last 40 years I have seen many "rules of thumb" for sizing equip- ment. Unfortunately this resulted with the vast majority of equipment being oversized. The manufacturers responded by designing multistage units and introducing variable speed motors. This resolved some prob- lems but not all. The only proven method for sizing equipment is to do a "Manual J" load calculation. These load calculations vary based on geographic locations. Our area has completely different design criteria as opposed to Arizona. Within the last few years ARCA (Air Conditioning Contractors of America) changed the design criteria in many regions, including ours. The current heating standard is to be able to heat a home to 70°F with an outdoor temperature of 2° F. For cooling it is 75°F inside with an 89° F temperature outside. The crux of the matter is to make sure when replacing your old HVAC equipment, to only use N.A.T.E. certified companies that adhere to strict factory standards. If you have any HVAC questions, call me direct at 815-404-4634 or email adam@officialhvac.com NOW HIRING EXPERIENCED HVAC SERVICE TECHNICIANS CALL US TODAY! Join our growing service department. Position available for an experienced HVAC Service Technician. Minimum 1-2 years Residential HVAC experience preferred. Call or submit resume to service@officialhvac.com OFFICIAL Heating & Cooling 800-350-HVAC (4822) officialhvac.com EACTORY AUTHORIED DEALER NATE Carrier BBB 4 Time A Honoree Tunto the eperts