How do I verify a HVAC Contractor license in Connecticut?

Call TradesAPI's GET /verify with state=CT, the license number, and trade=hvac to get a normalized result — valid/invalid, status, expiration, and any disciplinary actions — in one request. You can also search the official Connecticut board portal by hand.

What comes back for a Connecticut HVAC contractor license?

The normalized /verify result: whether the license is valid, its current status and expiration date, and any disciplinary actions the Connecticut board publishes — the same schema as every other state and trade.

Is Connecticut HVAC contractor license data free to check?

The Connecticut board's public portal is free to search manually. TradesAPI adds a single normalized API across all 50 states plus DC — every new API key includes 50 free verifications.

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Connecticut · HVAC Contractor license lookup

How to verify HVAC contractor licenses in Connecticut

Check any Connecticut HVAC contractor license — status, expiration, and disciplinary history — through one normalized API, or look it up by hand on the state board portal.

Connecticut coverage: Operational · live status

What you can verify

Trade: HVAC Contractor

Data source: Connecticut open data portal (daily)

Coverage: Home Improvement, New Home Construction, Electrical, Plumbing, HVAC, Fire Protection

Connecticut also supports name search — when you only have a contractor's name, the /search endpoint returns every matching license with full metadata, HVAC contractor licenses included.

Looking for a different Connecticut trade, or the same trade in another state? See the full Connecticut license guide or the national HVAC Contractor lookup by state.

One call. The whole picture.

The /verify response is identical in shape across every state and trade, so your integration code never changes per jurisdiction:

GET /verify?state=CT&license=SAMPLE-12345&trade=hvac

{
  "valid": true,
  "name": "SAMPLE CONTRACTING LLC",
  "license_number": "SAMPLE-12345",
  "trade": "hvac",
  "expiration": "05/12/2027",
  "status": "Active",
  "state": "CT",
  "disciplinary_actions": [],
  "source_url": "https://elicense.ct.gov/Lookup/LicenseLookup.aspx",
  "cached": false,
  "checked_at": "2026-07-06T17:00:00Z"
}

Example response showing the normalized schema. Wire it up against deterministic fixtures in the sandbox — no credit cost.

Verify Connecticut HVAC contractor licenses programmatically

# Verify a Connecticut HVAC contractor license with one API call
curl -H "X-API-Key: YOUR_KEY" \
  "https://www.tradesapi.com/verify?state=CT&license=SAMPLE-12345&trade=hvac"

The official Connecticut board portal is at https://elicense.ct.gov/Lookup/LicenseLookup.aspx — free to search HVAC contractor licenses by hand. TradesAPI wraps it (and every other state) in one API so you don't maintain 51 different scrapers.

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Frequently asked questions

How do I verify a HVAC Contractor license in Connecticut?: Call TradesAPI's GET /verify with state=CT, the license number, and trade=hvac to get a normalized result — valid/invalid, status, expiration, and any disciplinary actions — in one request. You can also search the official Connecticut board portal by hand.
What comes back for a Connecticut HVAC contractor license?: The normalized /verify result: whether the license is valid, its current status and expiration date, and any disciplinary actions the Connecticut board publishes — the same schema as every other state and trade.
Is Connecticut HVAC contractor license data free to check?: The Connecticut board's public portal is free to search manually. TradesAPI adds a single normalized API across all 50 states plus DC — every new API key includes 50 free verifications.