Manual J at 5,280 Feet

Sizing a Heat Pump for Denver — The Part Nobody Talks About

Equipment brand is the thing homeowners research and the thing that matters least. Sizing is the thing nobody asks about and the thing that determines whether you like your system. Here is how it should be done in Colorado.

Room-by-Room Manual J
Altitude Corrected
Denver Design Temp ~1°F
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The Problem

“Same Size as the Old One” Is Not a Calculation

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