Best Licensed HVAC Contractors in Killingworth, CT
5 HVAC contractors registered in Killingworth hold current DCP licenses, verified against official records as of August 20, 2026. All 5 are listed below, ordered by years licensed.
- 13 current DCP heating, piping and cooling contractor licenses held in Killingworth
- 5 trade-name companies in Killingworth are backed by those personal licenses
- Scope tiers among Killingworth's licenses: 7 unlimited, 6 limited
- Median time licensed in Killingworth: 26 years
- Longest-standing license behind a Killingworth trade-name company: issued in 1994
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- Verified
- August 20, 2026
- Licensed since
- 1994
- Held by
- WILLIAM J MAZZIOTTI
- Scope
- Unlimited
- Verified
- August 20, 2026
- Licensed since
- 1999
- Held by
- RAYMOND L DESJARDINS SR
- Scope
- Unlimited
- Verified
- August 20, 2026
- Licensed since
- 1999
- Held by
- GEORGE V MCQUEENEY
- Scope
- Limited
- Verified
- August 20, 2026
- Licensed since
- 2006
- Held by
- CARL T JORDAN
- Scope
- Unlimited
- Verified
- August 20, 2026
- Licensed since
- 2011
- Held by
- STEVEN F WEHRLE
- Scope
- Limited
Compare the top 5 at a glance
| Company | License | Scope | Licensed since |
|---|---|---|---|
| Reliable Heating & A/c Corp | #HTG.0303729-S1 | Unlimited | 1994 |
| Rld Heating & Cooling Inc. | #HTG.0389522-S1 | Unlimited | 1999 |
| East River Energy | #HTG.0307431-S7 | Limited | 1999 |
| Quality Plumbing & Heating Inc. | #HTG.0397195-S1 | Unlimited | 2006 |
| Commercial Kitchens Inc. | #HTG.0402945-D1 | Limited | 2011 |
Killingworth HVAC licensure at a glance
Connecticut licenses people, not companies, so this page counts both and says which is which: 13 current DCP heating, piping and cooling contractor licenses are held in Killingworth, and 5 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 Killingworth's licenses are unlimited and 6 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 Killingworth license has been held 26 years, and the longest-standing license behind a trade-name company was issued in 1994. 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 Killingworth: common questions
How many licensed HVAC contractors are there in Killingworth?
13 current DCP heating, piping and cooling contractor licenses are held in Killingworth, backing 5 trade-name companies. 5 Killingworth-registered companies passed our license verification, and all 5 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 Killingworth's 13 licenses are unlimited scope and 6 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 Killingworth license has been held 26 years, and the longest-standing license behind a trade-name company was issued in 1994.