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Verified record
License not state-verified. We could not confirm a current registration in the state registry. Insurance is self-reported. Look up in the official Connecticut registry ↗
- 1 review in the last 6 monthsNo negatives
- 1 work photo
Highlights
- A/C diagnosis — a recent customer said John D. diagnosed their A/C
- Thermostat walkthrough — a recent customer was shown how to use it
A recent Google reviewer wrote that John D. of JDL Air Systems diagnosed their A/C and showed them how to use their digital thermostat, and called him a very honest guy.
Read the comments
Most recent comments
- 5.0Aug 14, 2026
John D. a very honest guy. Diagnosed my A/C and taught me how to use my digital thermostat. Thank you for your service.
— melsmith426View on Google Reviews ↗
What does heating and cooling work cost in Greater Hartford?
Typical your area range for this kind of work, from regional averages — not a quote from JDL Air Systems LLC. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
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