HVAC permit leads: using mechanical permits
Updated · Rotomal
A mechanical permit for an HVAC replacement or new install shows that an address is changing its heating or cooling system now, and names the contractor of record. HVAC contractors use these permits mainly to see competitor activity by ZIP and to spot heat-pump adoption; insulation, duct cleaning, electrical and home-energy trades use them as leads. Since 1 January 2025, EPA rules limit the refrigerants allowed in new AC and heat pump systems, which is driving replacements onto new equipment.
What an HVAC permit record shows
- Property address
- Permit type (usually mechanical) and a description such as AC change-out, furnace replacement, heat pump or mini-split
- Issue and final dates
- Declared valuation in many jurisdictions
- HVAC contractor of record
Who an HVAC permit is a lead for
| Trade | Why the permit matters |
|---|---|
| HVAC contractors | Competitor share by ZIP; heat pump versus furnace trends in your area |
| Insulation and air sealing | A new system is sized for the house; owners investing in comfort often add insulation |
| Duct cleaning and duct work | Replacements expose old ductwork and filtration |
| Electricians | Heat pumps and mini-splits can need new circuits or a panel upgrade |
| Smart-home and service plans | New systems are a natural moment for maintenance contracts and thermostats |
The refrigerant transition
EPA's Technology Transitions rule under the AIM Act sets a 700 global-warming-potential limit for refrigerants in new residential and light commercial AC and heat pump systems, with an installation compliance date of 1 January 2025. Systems whose components were all manufactured or imported before that date are exempt from the installation date. In practice, replacements are moving to lower-GWP refrigerant equipment, which affects pricing and which contractors are certified on the new systems.
Filtering the list
Search descriptions for: HVAC, mechanical, AC, air conditioner, condenser, furnace, heat pump, mini-split, ductless, change-out. Separate replacements from new construction (new-home permits include HVAC), and commercial rooftop units by valuation.
Contacting owners: stay compliant
- Permit records are public, but phone and text outreach to homeowners is regulated: scrub numbers against the National Do Not Call Registry and follow TCPA rules before calling or texting.
- Most permit records do not include homeowner phone numbers or emails; the contractor of record and the property address are the reliable fields.
- Door hangers, mailers and B2B outreach to the contractor of record are the usual low-risk channels.
Questions
Do HVAC replacements need a permit?
Many US jurisdictions require a mechanical permit for HVAC replacements, though enforcement and exemptions vary. Check your local building department.
Can I tell heat pumps from AC units?
Often from the permit description; where it only says 'mechanical' or 'HVAC change-out', the type is not recorded.
Sources
- US EPA: HFC restrictions by sector (Technology Transitions) Source: epa.gov
- US EPA: Technology Transitions program Source: epa.gov
- US Census Bureau: Building Permits Survey Source: census.gov
- FTC: National Do Not Call Registry Source: donotcall.gov