Tankless Water Heater

Instant On-Demand Tankless Water Heaters Installation in Tonawanda, Niagara Falls, Buffalo

A tankless water heater in New York -- installation in an attic space.

Compact and efficient: A tankless water heater can be mounted just about anywhere - even in the attic, as shown in the photo. Gas-fired models must have a flue to exhaust combustion products to the outside.

A tankless water heater, also called an on-demand water heater, only begins to heat water when a demand is made by opening a hot water tap, turning on a dishwasher, or operating a washing machine.

Frank's Mr. Plumber offers FREE on-demand tankless water heater quotes throughout New York. Contact us today to schedule your appointment!

How it Works

No hot water tank is required (thus the "tankless" designation) because the water is heated on the way to its destination. The flow of water triggers gas burners or an electric heating element inside the heating unit.

When the tap is closed, the heat goes off and energy consumption stops. Because a tankless water heater eliminates standby heat loss, you're not paying to continually reheat water in a tank.

This makes any tankless water heater inherently more efficient than any tank-type water heater.

Tank Or Tankless Water Heater?

Tankless water heaters are used extensively in Europe, where energy costs are much higher than they are here. Case studies have demonstrated that replacing an old tank-type water heater with a tankless model can cut water heating expenses by as much as 45%. Tankless heaters fueled by natural gas and propane are more efficient than electric models.

Energy efficiency isn't the only benefit you enjoy with a tankless water heater. While a tank-type water heater can actually run out of hot water, a tankless model can provide an endless supply, as long as there aren't too many users at one time.

A gas tankless water heater system diagram

Illustration of a Gas Tankless Water heater, with copper heat exchange system.

Installing a Tankless Water Heater System

Tankless water heaters are very compact. A house-size model is about the size of a suitcase, and can be mounted on the wall.

Gas-fired models must be vented to the outdoors, but many of these utilize direct-vent technology, which means that no chimney is required.

Instead, exhaust gas is vented outside through a pipe that extends through an exterior wall.

If you are interested in saving money on water heating by installing a tankless water heater, talk with Frank's Mr. Plumber about a free water heater upgrade quote!

Frank's Mr. Plumber serves Tonawanda, Niagara Falls, Buffalo and throughout NY.

Tankless Water Heater Pros And Cons


  • Energy Efficiency: A tankless model cuts water heating expenses by as much as 45%.
  • Endless hot water: Maintains the flow of hot water as long as the tap is open.
  • Compact size: Provides many installation options for your home.
  • Long-Lasting: Tankless water heaters typically last longer than tank-type water heaters.


  • Cost: More expensive than most tank-type water heaters.

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Frank's Mr. Plumber
2080 Military Rd
Tonawanda, NY 14150
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