Why HVAC permits are good leads
Replacing a furnace, heat pump or central air system normally needs a mechanical permit. Those permits show which homes and businesses are changing their heating and cooling, and in many cities they also list the contractor and value. For HVAC companies that do not get the job, the permit is still useful: it tells you who is winning work in your area, and it identifies properties that will need service contracts, duct cleaning, filters or smart thermostats. Equipment distributors use the same data to see which contractors are growing.
The difference between a permit and a normal lead list is timing and intent. A purchased list tells you who might need something one day. A permit tells you that somebody has already filed paperwork with the city, usually with a date, an address and often a value and contractor. You are not guessing.
How many HVAC permits Mapenzo shows in the US
The numbers below are verified counts from Mapenzo's US database for 2026 (from 1 January to mid-October 2026; a few sources such as Orlando, New Orleans and Norfolk start earlier). They come from official open data portals of the cities and counties listed, and they are refreshed daily. Only states with at least 100 matching permits are shown, together 45,423 permits.
| State | Main source areas | Hvac permits (2026) |
|---|---|---|
| New York | New York City | 18,455 |
| Pennsylvania | Philadelphia | 5,561 |
| Louisiana | New Orleans | 4,356 |
| Florida | Florida (state overview) | 3,243 |
| Washington | Washington (state overview) | 2,473 |
| Virginia | Virginia (state overview) | 2,327 |
| Ohio | Cincinnati | 2,280 |
| Texas | Austin | 2,141 |
| California | Los Angeles | 2,074 |
| Illinois | Chicago | 1,453 |
| North Carolina | Raleigh | 519 |
| Arizona | Arizona (state overview) | 287 |
| Maryland | Maryland (state overview) | 254 |
New York leads with 18,455 permits. Coverage in the US is currently city- and county-based, not statewide, so the table shows the main area for each state. Click a city to open its HVAC permit page, or see the state overview for New York.
How to use the data, step by step
- Use both the HVAC and mechanical filters; cities classify the same job differently.
- Sort by contractor to see who installs the most systems in your area.
- Target service agreements at properties whose new system was installed by a contractor that does not offer maintenance.
- Commercial mechanical permits with high valuations are worth a direct call to the general contractor.
A practical routine for HVAC contractors: every Monday, open the map for your service area, filter to the last seven days, export or note the new addresses, and plan visits, letters or calls. The work takes fifteen minutes, and because the same data is not on your competitors' desks, the conversations start earlier.
What a permit record contains
Fields differ by city, but most records include the permit type and description, the date filed or issued, the address and coordinates, and the status. Many cities also publish the estimated value of the work and the contractor name; Chicago, Orlando, Marin County and several others publish contractors for most records. Mapenzo normalises these sources into one map and one set of trade filters, so you do not need to learn fourteen different city portals.
Be aware of the limits. Mapenzo only shows what the city publishes, and some cities classify work types loosely, so a small share of records may sit under a broader category such as mechanical or alterations. When in doubt, read the original description, which is always shown on the permit card.
Beyond the US
The same map covers building permits in Estonia, Finland, Latvia, Lithuania, Poland, France, Ireland, the Netherlands and the United Kingdom, plus over 33,000 energy projects and 4,323 existing data centres. If you sell across borders, one account covers all of it, in your own language.
Try it
Mapenzo has a simple way to test this: a 12-hour pass for 5 € opens every country, every permit and every layer, including energy projects and data centres. If you then subscribe, your first month is 50% off. Personal plans are 20, 50 or 80 € per month, and Team plans for sales teams are 40, 100 or 150 € per month.
Open the map or start with the Cincinnati page.
FAQ
Where does Mapenzo get HVAC permit data?
From official open data portals of US cities and counties, such as Cincinnati, refreshed daily.
How many HVAC permits are on Mapenzo?
45,423 in the US states listed in this article for 2026, plus permits in nine European countries.
Is Mapenzo available in every US state?
Not yet. Permit-level data covers areas in 14 states; more cities are being added.
How much does it cost?
A 12-hour all-access pass costs 5 €. New subscribers get 50% off the first month.
Related cities
Related work types
Frequently asked questions
Where does Mapenzo get HVAC permit data?
From official open data portals of US cities and counties, such as Cincinnati, refreshed daily.
How many HVAC permits are on Mapenzo?
45,423 in the US states listed in this article for 2026, plus permits in nine European countries.
Is Mapenzo available in every US state?
Not yet. Permit-level data covers areas in 14 states; more cities are being added.
How much does it cost?
A 12-hour all-access pass costs 5 €. New subscribers get 50% off the first month.