Ducts Matter A Lot.

Another reason systems may appear not to be producing enough cold air is because of duct leakage. Duct leakage can sap 20 to 40% of the energy out of even a well-operating air conditioner, if the ducts pass outside the cooled space (this includes attics, crawlspaces and garages). Ducts outside need to be well insulated.

Various products exist specifically for insulating ducts that can be installed by a keen home owner or a professional contractor. You might be able to get an extra half ton of air conditioner capacity for free, if you seal your leaky ducts. If the ducts are accessible, handy consumers can seal ducts with mastic—that white sticky stuff you can paint on the ducts. Otherwise you would need a professional to seal the ducts.

Read the full article at: https://www.ashrae.org/resources--publications/free-resources/top-ten-things-about-air-conditioning

Heating and Cooling Systems in Houston TX

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