Question 1

Why match on 5°F heating output instead of nameplate tonnage?

Accepted Answer

Nameplate tonnage is often quoted at milder conditions. Colorado winter performance is dictated by low-temperature output and capacity retention. A model that looks similar on paper at 47°F may underperform significantly at 5°F.

Question 2

Can I rely on this tool for final equipment selection?

Accepted Answer

Use this as a screening layer. Final selection still requires Manual J load calculations, duct static-pressure checks, electrical constraints, and contractor-specific install strategy. This tool is designed to prevent obvious low-temp mismatches early.

Question 3

What oversize range is usually healthy for inverter heat pumps?

Accepted Answer

Inverter systems tolerate moderate oversizing much better than single-stage equipment because they modulate output. A practical range is often around 10% to 35% over design load, but acceptable bounds depend on distribution design and comfort priorities.

Question 4

How do rebates factor into model matching?

Accepted Answer

Model viability is not just performance; it is also eligibility. After identifying technical matches, confirm each model's rebate-path compliance (cold-climate listing, efficiency thresholds, and program-specific documentation requirements).

Cold Climate Model Matcher

Data-Led Filtering for Real Colorado Winters

5°F Capacity First

Efficiency Guardrails

Cold-Climate Focus

Actionable Shortlist

Cold Climate Matching FAQ

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