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A hand closing an isolation valve on the pipework beneath a wall-hung tankless water heater
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Tankless Water Heaters

On-demand hot water, no tank

Tankless (on-demand) water heater installation and service. A tankless unit heats water as it flows, so it does not run out and it is not paying to keep a tank hot all day. It also asks more of the installation — gas supply, venting and flow rate all have to be right, and in a hard-water building it needs descaling — which is exactly why a badly installed one disappoints and a properly installed one does not.

How It Works

1

Check it's the right call

Tankless is not automatically better. If your gas supply or venting makes it a bad fit, you get told that rather than sold one anyway.

2

Size it on flow, not guesswork

How many fixtures run at once, and the incoming water temperature — which in a New York winter is the number that decides whether the unit keeps up.

3

Install to spec

Gas line and venting sized correctly, condensate handled, isolation valves fitted so it can actually be serviced later.

4

Commission and explain

Unit fired and flow tested, then you get shown the fault codes and told how often it needs descaling for the water in your building.