My present heating and cooling system does not keep us comfortable. Should I have a larger system installed?
In most cases no.
Usually the problem is due to poor system design or installation. More likely
you will need duct work modifications, a manual J heat load calculation, or
possibly an energy audit to find the problem areas and correct them.
What is
the average life of a central air conditioning system?It
can vary, depending on how much the system is used and how regularly it is
checked or serviced. Generally, the average life of cooling units built in the
1970s and 1980s is about 15 years, but individual units may vary and last much
longer, depending on use and how well they are maintained. Heat pumps have about
the same life span-- an ARI survey showed average heat pump life to be about 14
years when recommended maintenance procedures were followed. Newer units are
expected to last even longer
Can
homeowners repair their own air conditioners?
In most cases, definitely not. Cooling systems today are more complicated to
service and usually require expert attention in order to comply with federal
regulations, such as the Clean Air Act which prohibits releasing refrigerants
into the atmosphere.
An EPA-certified air conditioning contractor or service technician should be
called at the first sign of trouble.
What is
the best type of system to meet all indoor comfort needs?
The best system depends on many variables, including family size, house
location and design, and utility cost and availability. The optimum indoor
comfort system might include high efficiency central air conditioning and
heating, a high-efficiency air cleaner, and a central humidifier.
How often should I change
the air filter in my system?
Check it at least every month during peak use, and replace it when it looks
dirty enough to significantly impair the air flow through it. Some filters, such
as media filters or electronic air cleaners, are washable; others are disposable
and must be replaced.