Questions this calculator answers
- What should an HVAC quote include?
- At least the ten items here: load calculation, AHRI match, model numbers, permit, refrigerant, warranty, licence, duct scope, commissioning and payments.
- Why does the checker ignore price?
- We do not publish HVAC prices, and completeness predicts surprises better than price does.
- Is a quote without a Manual J a bad quote?
- It means the size was not calculated for your house. Ask for one.
- Does HyreHVAC check contractors?
- No. We are a publisher. Check licences with your state board.
Sources and methodology
Figures dated October 26, 2026. Last reviewed .
- ACCA: Manual J, Residential Load Calculation (ACCA, retrieved 2026-10-26. The ANSI-recognised method for sizing heating and cooling equipment to a house.)
- AHRI Directory of Certified Product Performance (AHRI Directory of Certified Product Performance, retrieved 2026-10-26. Look up the certified rating of a matched outdoor and indoor combination.)
- EPA: Section 608 Technician Certification Requirements (EPA, retrieved 2026-10-26. Who must be certified to work on refrigerant circuits, including attaching gauges.)
- US DOE Building Technologies Office: Residential HVAC Installation Practices, A Review of Research Findings (June 2018) (US DOE Building Technologies Office, retrieved 2026-10-26. Field-study review of installation and maintenance faults in homes.)
Related
- Quote comparison worksheet Three quotes side by side
- Buying checklist Printable version
- HVAC cost guides What drives the price