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Toolkit for air source heat pump sizing and selection

Natural Resources Canada has developed a package of materials related to air source heat pump (ASHP) sizing and selection, intended for use by mechanical system designers and renovation contractors. The materials were designed to assist these individuals with sizing and selecting ASHPs for Canadian climates, in both new and existing (retrofit) residential applications.

Components of the toolkit

  1. ASHP Sizing and Selection Guide (referred to as “the Guide”) and ASHP Key Specifications Summary Worksheet (included in the Guide as Appendix B)
  2. ASHP Sizing and Selection Tool: an electronic representation of the ASHP Sizing and Selection Guide. The tool interactively guides users in applying the step-by-step process described in the Guide, while providing additional charting and performance analysis features (version V2.4 is now available. Existing users are encouraged to upgrade to V2.4)
  3. Addendum of worked examples: provides case studies of the Guide being used to select either centrally ducted or ductless mini-split ASHPs for various installation scenarios

Download the toolkit

Learn how to use the toolkit

Watch this video to learn how to use the ASHP Sizing and Selection Toolkit. The video includes an introduction and overview of the Guide, as well as an overview of the tool and a walk-through using several example scenarios.

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