Sizing replacement systems

Old 06-21-14, 06:20 AM
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Sizing replacement systems

I am going to replace my Trane electric heat pump and air handler with new Trane units for the upstairs of my house. The old units are 2 tons for the heat pump and 2 tons for the air handler. The quotes include one which includes a heat pump xl15r rated at 2 tons and an air handler that is rated at 1.5 tons (18000 btu/hr). The literature claims that this system as a whole is rated at 2 tons and I have two questions - is it possible that a 2 ton heat pump and 1.5 ton air handler can together deliver 2 tons of cooling and is this a suitable replacement system?
Old 06-23-14, 05:25 AM
airman.1994's Avatar
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simple answer no! AHU can not be smaller than outdoor unit.
Old 06-25-14, 05:24 PM
Houston204's Avatar
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I agree with Airman. They should be the same size.

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