Legal disclaimer

HVACBuddy publishes general information. It is not engineering, tax, or legal advice.

Engineering and safety

Sizing, equipment selection and duct design require a calculation performed for your house by a qualified professional. Nothing here substitutes for a Manual J.

Tax and incentives

We explain programs; we cannot tell you whether you personally qualify. Eligibility depends on your circumstances. Consult the IRS, your state energy office, or a tax professional.

Electrical, gas and refrigerant work

These require a licensed, EPA-certified technician. Pages marked professional-only explain the problem and what a technician will do — they are not repair procedures.