Purchasing a new heating system is not as simple as choosing the largest or most efficient model available.
A system that is too big for your home can lead a variety of problem, such as short-cycling, which causes the system to start and stop rapidly because it heats your home too quickly. It can be an expensive mistake, resulting in higher energy bills and a shortened lifespan.
How to Calculate the Right Size
Furnace size is measured in British Thermal Units (BTUs). One BTU is equivalent to the amount of energy needed to heat or cool 1 pound of water by one degree Fahrenheit. This number can be found on every heating system.
Another form of measurement used for furnaces is the Annual Fuel Utilization Efficiency (AFUE) rating. This demonstrates the efficiency of a heating unit at converting fuel into heat based on a percentage. Modern furnaces are typically over 90% efficient.
The following are the factors included in the final calculation to find the correct size furnace:
- Home’s square footage. Only measure rooms which possess heating and air conditioning vents. Keep in mind of the ceiling height.
- Determine your climate zone. The Department of Agriculture has assigned zone numbers for different regions of the country in order to figure out the correct size for your particular temperature variations.
- Choose which kind of heating system is best for your home. A single stage furnace costs the lowest and includes two settings, either wide-open or off. A two-stage furnace can run at a lower capacity for a substantial amount of time when maximum heat is not necessary, which can save you money on your monthly energy bills. Lastly, variable-speed blower motor models can be used with a single or two stage furnace, and includes benefits such as increased air filtering.
If you are still unsure which type of furnace is right for your home, do not hesitate to contact a licensed HVAC technician before making any purchases or starting any construction. A professional contractor will know specific details concerning your home’s unique needs.
Contact 72 Degrees Air Conditioning & Heating to schedule an appointment in Fredericksburg, TX and surrounding areas today.