Even the top of the line heating and cooling systems will fail to perform efficiently and provide ideal comfort if they are sized and installed improperly.
The HVAC contractor who handles the job needs to complete accurate calculations.
They should use the protocols that were developed by the engineers at the Air Conditioning Contractors of America (ACCA). These standards are recommended by the US Department of Energy to ensure best practices and protect the investment of the homeowner. When the heating and cooling system is the appropriate size for the demands of the home, it will cost less to operate. In most cases, temperature control equipment is oversized, which results in quick cycling. The equipment starts up and shuts down frequently, creating temperature fluctuations and issues with humidity. This is because the air conditioner or heat pump doesn’t run long enough to remove moisture from the home or achieve a steady temperature. A system that is too big costs more money to buy, and combined with poor efficiency, makes for a much larger investment for less return. When the furnace, air conditioner or heat pump operates at peak capacity, it promotes balanced airflow and enhances indoor air quality. It prevents stagnant and stale indoor conditions and minimizes problems with mold, mildew, bacterial growth and dust mite population. You’re going to spend less to maintain a healthier, more efficient and comfortable home. You can expect the system to run more reliably and last longer. If you’re planning an HVAC installation or replacement project, it’s a good idea to make sure the HVAC contractor you hire follows Manuals J, D and S.