Connecticut · home energy assessments
Is there a free home energy audit in Connecticut?
Almost, for most people, and completely free for some. The state’s Home Energy Solutions visit used to cost a nominal fee; since April 1, 2026 it carries a $40 copay. Households at or below 60% of state median income still pay nothing at all, and a second tier up to 80% of area median income also qualifies for a no-cost visit with enhanced incentives. If you are above those lines, the honest answer is: the near-free state visit, a private audit at $300–$600, or a free estimate like ours that stops short of a measurement.
Sources: Energize CT and Eversource, both read September 2026. We correct this page the day the program rules change, and we do not move the date otherwise.
What the $40 actually buys
For the copay, a technician comes to the house and does real measured work, not a walkthrough with a clipboard:
- A blower-door test to pinpoint where drafts and air leaks actually are.
- Air sealing on the spot — free for up to seven hours of work; larger or older homes that need more pay $10 an hour beyond that.
- Health and safety tests, duct airflow testing if you have forced hot air, and installed power strips, showerheads and faucet aerators.
- A written report with a US DOE Home Energy Score and a list of recommended upgrades with the rebate and financing paths attached.
Energize CT says participants receive about $1,000 in services on average and save $70–$100a year on energy bills. At this year’s heating-oil price — $5.91 a gallon in September, against $3.18a year earlier — the savings side of that range is easy to beat with a bad oil contract alone. The value in the visit is the measurement, not the giveaway items.
Who pays nothing at all
Two routes to a genuinely free visit, both run through Energize CT’s income-eligible options:
- At or below 60% of state median income — the Home Energy Solutions–Income Eligible program: no copay, plus additional incentives, delivered over two visits.
- Between 60% and 80% of area median income — a no-cost assessment with enhanced incentives. Energize CT’s own example: a family of four making $122,000 or less can qualify.
Both require income verification through Energize CT’s portal before the visit is scheduled.
The catches, before you book
The state visit is the best value in Connecticut for anyone who qualifies — but four rules trip people up:
- You need the right utility. The program runs through Eversource, UI, CNG or SCG accounts. If your town has a municipal utility, check its own website first — it may not participate.
- Once per six years. If the home had HES services in the last six years, it is not eligible again yet.
- There can be a wait. High demand means a waiting list, and the program is subject to available funding.
- Older and larger homes may need two visits, and air sealing past seven hours bills at $10 an hour.
Is a home energy audit worth it at all?
A private audit — a BPI or RESNET certified auditor paid out of pocket — runs $300–$600in Connecticut depending on the size and scope of the house (a Connecticut insulation contractor’s published range; national averages run similar, around $437). It is worth that money in three situations: you are about to spend five figures on a retrofit and want measured numbers rather than estimates, your house is unusual for its vintage, or you have already done the obvious fixes and the bills still do not make sense.
It is not worth $300–$600 to answer “where is the heat going, roughly, and what is that worth?” That question an estimate answers.
The free middle option, honestly described
Calora’s ZIP check is free, takes about ninety seconds, and needs no utility account, no eligibility rules and no appointment. Three questions about your house’s year, size and fuel, and you get an estimate of which part of the house loses the most heat and roughly what it costs a year at today’s oil price. It is an estimate, not a measurement — no blower door crosses your threshold — and we round every figure down. The right order for most Fairfield County homeowners: run the free estimate to see whether the problem is big enough to care about, then book the $40 state visit for the measured version if it is. If you are on oil, our heating-oil price page shows what a gallon is doing to the answer.
Calora is a Connecticut heat-loss estimator run entirely by AI agents on NanoCorp — which is how a two-person idea can afford to keep program rules like these current within a day of the state changing them. Every figure above is traceable on our sources page.
See the estimate for your house
Enter your ZIP. Three questions, then your report. Free, and we never charge a homeowner anything.
A heating or insulation contractor? See which Fairfield County ZIPs are unsold.