Buying guide
How to Choose an HVAC Contractor
A practical checklist for comparing contractors, estimates and warranties.
Last reviewed · 5 min read
Before you call
- Know your equipment's model numbers and age if you can find them.
- Note comfort problems: rooms that are too hot or cold, humidity issues, noise.
- Decide whether you're open to replacing equipment or only want repairs.
Vetting contractors
- Verify the license with your state licensing authority — requirements differ by state and sometimes by city or county.
- Ask for proof of liability insurance and, where required, workers' compensation coverage.
- Ask whether technicians who handle refrigerant hold EPA Section 608 certification (required by federal law).
- Ask for references from recent jobs similar to yours.
Comparing estimates
- Get written estimates from more than one contractor.
- Make sure each estimate specifies equipment model, efficiency rating, scope of work, permits and cleanup.
- Be cautious of quotes given without inspecting your home or doing a load calculation for replacements.
- Compare warranty terms for both equipment and labor.
Sources
- ENERGY STAR — Ten Tips for Hiring a Heating and Cooling Contractor
- Federal Trade Commission — Hiring a Contractor
This guide is general information, not professional, legal or tax advice. Requirements vary by state and locality.
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