Best Licensed HVAC Contractors in New Haven, CT
6 HVAC contractors registered in New Haven hold current DCP licenses, verified against official records as of August 20, 2026. All 6 are listed below, ordered by years licensed.
- 18 current DCP heating, piping and cooling contractor licenses held in New Haven
- 6 trade-name companies in New Haven are backed by those personal licenses
- Scope tiers among New Haven's licenses: 7 unlimited, 11 limited
- Median time licensed in New Haven: 14 years
- Longest-standing license behind a New Haven trade-name company: issued in 1988
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- Verified
- August 20, 2026
- Licensed since
- 1988
- Held by
- ROBERT A RONSHAGEN
- Scope
- Unlimited
- Verified
- August 20, 2026
- Licensed since
- 2000
- Held by
- SIM GIBBS III
- Scope
- Limited
- Verified
- August 20, 2026
- Licensed since
- 2006
- Held by
- KEITH L BECKFORD
- Scope
- Limited
- Verified
- August 20, 2026
- Licensed since
- 2008
- Held by
- AHMAND R HOLLIS
- Scope
- Unlimited
- Verified
- August 20, 2026
- Licensed since
- 2018
- Held by
- BOOKER T WASHINGTON III
- Scope
- Unlimited
- Verified
- August 20, 2026
- Licensed since
- 2019
- Held by
- AARON M GUEST
- Scope
- Unlimited
Compare the top 6 at a glance
| Company | License | Scope | Licensed since |
|---|---|---|---|
| R A Ronshagen Mechanical | #HTG.0303292-S1 | Unlimited | 1988 |
| Sim Gibbs Inc. | #HTG.0391476-S3 | Limited | 2000 |
| Beckwinter Heating | #HTG.0397173-D1 | Limited | 2006 |
| Ace Plumbing And Contracting Services LLC | #HTG.0399623-S1 | Unlimited | 2008 |
| Mechanical Heating And Air Conditioning LLC | #HTG.0407844-S1 | Unlimited | 2018 |
| Amg Plumbing Mechanical LLC | #HTG.0408263-S1 | Unlimited | 2019 |
New Haven HVAC licensure at a glance
Connecticut licenses people, not companies, so this page counts both and says which is which: 18 current DCP heating, piping and cooling contractor licenses are held in New Haven, and 6 trade-name companies are backed by those license holders. A business appears here only when licensed contractors operate under a registered trade name, and each listing names the person whose license backs it. The state also defines a scope on every credential: 7 of New Haven's licenses are unlimited and 11 limited - shown as published, never ranked on, because scope authorises kinds of work rather than ordering quality. Tenure is what these pages rank on: the median New Haven license has been held 14 years, and the longest-standing license behind a trade-name company was issued in 1988. Licenses here expire on one statewide date per trade each year, so an expiration date says nothing about an individual company and none is shown per listing - it gates currency only. DCP publishes no insurance, no bond and no phone for any licensee, so Connecticut listings show none of the three. eLicense cannot link straight to a record, so every listing above shows its number for you to paste into DCP's eLicense lookup. How we verify.
HVAC Contractors in New Haven: common questions
How many licensed HVAC contractors are there in New Haven?
18 current DCP heating, piping and cooling contractor licenses are held in New Haven, backing 6 trade-name companies. 6 New Haven-registered companies passed our license verification, and all 6 are listed on this page. Only licenses in DCP's four live statuses, unexpired at our data date, count.
Who holds a Connecticut HVAC license - the company or a person?
A person. Connecticut licenses people, not companies: a business appears here only when licensed contractors operate under a registered trade name, and each listing names the person whose license backs it. 7 of New Haven's 18 licenses are unlimited scope and 11 limited - shown as published, never ranked on.
How do I check an HVAC contractor's license in Connecticut?
Every listing above shows the license number and names its holder. DCP's eLicense lookup cannot link straight to a record, so open it and type the number in. The median New Haven license has been held 14 years, and the longest-standing license behind a trade-name company was issued in 1988.