Water Heater Installation Cost in Connecticut

For a standard 40–50 gallon tank replacement done to current Connecticut code, most homeowners land between $2,700 and $3,000 installed. That range includes the unit, permit-quality installation, new water and gas or electrical connections, expansion tank, code-compliant venting, drain pan where required, haul-away of the old tank, and our workmanship guarantee. Tankless installations are quoted separately because they involve gas sizing, new venting, and condensate work.

A $1,700 price usually means a builder-grade tank swapped onto whatever connections are already there — old flex lines reused, no expansion tank, existing venting left alone even if it is undersized, no permit, and a short labor warranty. It is not that the number is fake; it is that it buys a different job. When the code items are added back in, most of those quotes end up close to ours anyway, just after the work has started.

The most common ones are a thermal expansion tank, a properly sized temperature and pressure relief discharge line, a sediment trap on gas units, correct vent material and slope, seismic or strapping details where applicable, a drain pan with a routed line when the heater sits above a finished space, and dielectric or correctly transitioned connections. These are not upsells — they are what makes the installation pass and last.

Tankless installations typically run higher than tank replacements because the job includes gas line sizing or upgrading, new stainless or PVC venting, condensate drainage and neutralization, isolation valves for future descaling, and often an electrical circuit. We quote tankless per home after looking at your gas meter, run lengths, and venting path, so the number you get is the number you pay.

Sometimes. If your existing connections, venting, and expansion control are already correct and recent, a straight swap is legitimately less work and should cost less. What you want to avoid is paying a low price for a swap that skips required items, because the failure shows up as a leak, a failed inspection, or a voided manufacturer warranty years later.

We charge a $125 service charge for the diagnostic visit and a written flat-rate estimate. That fee is waived when you hire us for the work. You approve the full price in writing before anything is installed.

No. We quote flat rate after seeing the actual installation, so the price you approve is the price you pay. If we find something genuinely unforeseen behind a wall, we stop, show you, and get your approval before continuing.

Yes. Water heaters fail without warning, so we offer financing for qualified homeowners on both tank and tankless replacements. Ask about plans when you get your estimate.