NEW HAVEN PLUMBING SERVICE
Tankless water heater installation in New Haven, CT
Endless hot water and a freed-up corner of the basement. We size, install, service and repair tankless units.
Updated September 2026 · New Haven, CT
A tankless heater heats water as you use it, so a full house can shower back to back without running cold. It also hangs on the wall and frees up the space where the old tank sat.
The catch is sizing and venting. Call and we'll look at your gas line, venting and household demand, then quote a unit that actually keeps up.
Call 203-654-9405 any hour, or request a callback below.
Signs you need tankless water heaters
- Your tank is 10 or more years old and due anyway
- Hot water runs out before everyone's done
- You need the basement space back
- A tankless unit shows an error code or runs lukewarm
- Scale buildup has never been flushed out
What to do right now
- Note the brand, model and any error code on the unit.
- Check that the gas valve or breaker to the unit is on.
- Make sure the air intake and vent outside aren't blocked by snow or leaves.
- Write down how many bathrooms and people the house has.
- Call us to repair the unit or quote a new install.
What it costs
Tankless units cost more to install than a standard tank, mainly because of venting and gas line sizing. We quote the full job, unit and install, before work starts.
More detail: Water heater replacement cost in New Haven
Questions we hear a lot
Will a tankless water heater work in an old New Haven house?
Usually, yes. The gas line sometimes needs upsizing and the unit needs a proper vent route. We check both before quoting.
Does a tankless heater need maintenance?
Yes. A yearly flush clears scale that builds up in the heat exchanger and keeps it running right.
Where we work
- Tankless water heaters in East Rock
- Tankless water heaters in Fair Haven
- Tankless water heaters in Westville
- Tankless water heaters in Hamden
- Tankless water heaters in West Haven
- Tankless water heaters in East Haven
- Tankless water heaters in North Haven
- Tankless water heaters in Branford
- Tankless water heaters in Orange
- Tankless water heaters in Woodbridge
- Tankless water heaters in Milford
- Tankless water heaters in Wallingford
- Tankless water heaters in Wooster Square
- Tankless water heaters in the Annex
- Tankless water heaters in Beaver Hills
- Tankless water heaters in Dixwell
- Tankless water heaters in Morris Cove
Other plumbing services
Dealing with this right now?
Call and a licensed New Haven plumber from our team can be there today.
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