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Choosing the Right System
To get the best performance and highest efficiency possible from your new system, follow these steps:
- Always the first step - find the
right contractor.
- Have your contractor perform a complete load calculation.
Called a "Manual J" calculation, contractors can perform this test to make
sure you get a properly sized unit. An oversized central AC or furnace will
cycle on and off too often, cause discomfort or worse!
- Make sure that all of the components of your new system are designed
to work together. Your system will work best if all the pieces take
advantage of advances in product design and are matched to each other.
- Ask your contractor to provide details on the models that you are
considering and ask about a variable speed fan unit, which will improve
comfort and efficiency and allow continuous air filtering at minimum energy
cost.
- Have your contractor check all ducts. All ducts must be
correctly examined to make sure they are sealed and insulated (where outside
the building envelope) with supply and return systems balanced.
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