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The lifespan of an HVAC system depends on various factors, including the type of system, how often it is maintained, and how well it is taken care of. According to ASHRAE, the median life span of HVAC equipment is as follows:
Heat Pumps and Air conditioners - 15 yrs
Ductwork - 30 yrs
Insulation on duct - 20 - 24 yrs
Gas Furnaces - 18 yrs
We recommend replacing air filters every 3 months.
However, air filters located near the floor may need to be changed monthly, especially in high traffic areas.
Dirty filters can cause major issues, like fan motor failures and the freezing of indoor coils.
Filters are rated by their Minimum Efficiency Reporting Value or "MERV" rating, which measures the effectiveness of the filter.
Avoid fiberglass filters unless a whole-house filter is present.
We recommend a MERV-8 extended pleat to keep your indoor coil clean and will also help keep condensate drains cleaner.
SEER stands for "Seasonal Energy Efficiently Ratio" and is how well a system can cool. This rating only applies to cooling efficiency.
Heat pump heating is rated by HSPF which stands for "Heating Seasonal Performance Factor".
A good HSPF is 7.8 and up. The higher the HSPF, the better the heat pump can absorb heat from the outside air and reduces how often the auxiliary heat is used.
Cost will depend on the size (tonnage) and efficiency (SEER) of the system. A complete replacement of a standard 14.3 SEER system may be around $7-$8k. Where as a 18 - 20 SEER system may cost as high as $16,000.
Things to consider when purchasing are: How long will you own the home, does the home have an open interior, are there hot and cold spots between rooms, and is the indoor humidity high?
Two times per year is ideal for most systems. Once before or during the heating season, and once before or during the cooling season.
At a minimum, once per year is recommended (ideally before the heating or cooling season begins).
During the service, a technician should check refrigerant levels, test controls, clean coils, inspect ductwork, clear condensate drains, and verify system performance.