As your furnace ages, it will become noisy and require repairs more often due to a decline in efficiency. If you're currently spending money on frequent repairs for a unit that's 10 years old or older, replacing it with a new, more energy-efficient HVAC unit might be the best decision and will lower the cost of your utility bill.
The following factors will affect the price of a furnace:
1. Heat output- measured in BTUs (British Thermal Units).
Just like your home requires you to choose the correct AC size, a furnace is not any different. For example, choosing a furnace with a high BTU rating for a small home does not indicate higher efficiency because it will heat the house faster. A furnace that is too large will hit ideal temperatures rapidly, shut off, and result in an inconsistent comfort level.
2. Efficiency- AFUE (annual fuel utilization efficiency).
The efficiency of a furnace determines the percentage of heat that will be lost to waste.
A standard efficiency furnace provides 80% annual fuel utilization efficiency (AFUE). In this type of furnace, 20% of the energy produced by natural gas is expelled as exhaust. High efficiency furnaces offer 90% or more AFUE. The smallest jump in efficiency translates to a decrease in energy bills.
3. Staging- how effective a furnace can heat your home.
A one-stage furnace will always run at full power. A two-stage furnace has the ability of running at 65% and ramping up to 95% as needed.
If you think it may be time to replace your old heating and air conditioning unit, schedule a FREE consultation with the HVAC Gurus and we'll send one of our knowledgeable technicians to give you an estimate.