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System Design with Existing Heating 

04-14-2025 02:04 PM

Adding a heat pump to a building with a legacy system introduces several new design and operation considerations. These challenges include different operating costs, division of capacity between the systems, interaction between the systems, and when to run each system. This document describes potential applications for heat pumps in houses with functional legacy heating systems. 

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System Design with Existing Heating   666 KB   1 version
Uploaded - 04-14-2025
Adding a heat pump to a building with a legacy system introduces several new design and operation considerations. These challenges include different operating costs, division of capacity between the systems, interaction between the systems, and when to run each system. This document describes potential applications for heat pumps in houses with functional legacy heating systems.
 
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Comments

Kevin Gorgoglione
05-01-2025 11:57 AM

Great article. The US DOE fuel cost calculator makes short work of fuel cost/balance point calculations.

Been using it for 20+ years for oil-propane-heat pump-nat gas cost comparison. I have given customers a guess on their savings, and it is in that ballpark.