Guide
Heat Pump Buyer's Guide 2025
Everything you need to know before purchasing — system types, sizing, efficiency ratings, and how to evaluate contractor bids.
Buying a heat pump is one of the highest-impact energy upgrades you can make. This guide walks you through the decisions that matter most — so you can compare products and quotes with confidence.
Choose the right system type
Air-source heat pumps move heat between your home and outdoor air. Mini-splits serve individual rooms without ducts. Geothermal systems use underground loops for maximum efficiency. Match the type to your home layout, climate zone, and budget.
Size it correctly
Oversized units short-cycle and waste energy; undersized units struggle in peak cold. Use a Manual J load calculation — not a rule-of-thumb based on square footage alone. Our sizing calculator provides a starting estimate for contractor conversations.
Compare efficiency ratings
SEER2 measures cooling efficiency; HSPF2 measures heating. EER2 matters in hot climates. Compare models side-by-side in our product directory, then run the 10-year cost calculator with your local utility rates.
Evaluate installation quotes
Get at least three bids from licensed, insured contractors. Compare equipment model numbers (not just brand), warranty terms, rebate processing assistance, and timeline. The lowest bid is rarely the best value over 15 years.
Stack incentives before you buy
Federal tax credits, state rebates, and utility incentives can reduce net cost by $2,000–$10,000+. Confirm eligibility for your income level and equipment tier before signing a contract — some programs require pre-approval.
Ready to compare models?
Browse 14,000+ products or run side-by-side comparisons before you talk to installers.