Tankless Water Heater FAQs

Want the inside scoop on tankless water heaters?  Then, you’ve come to the right place!

This in-home water heating technology need not remain a mystery anymore. Here, we do our best to demystify the tankless water heater in plain English by considering some frequently asked questions. For your reference, tankless water heaters are also sometimes referred to as on-demand, instant, or continuous water heaters.

How do tankless water heaters work?

Fueled by gas and electricity, tankless water heaters instantaneously heat water by way of a heat exchanger. This means a continuous and endless flow of hot water will persist for as long as needed, regardless of how many household water appliances may be simultaneously in use.

What’s the difference between tankless and conventional water heaters?

There are many differences between on-demand and conventional tanks. Conventional water heaters work by storing and regularly heating water which uses a tremendous amount of energy, resulting in higher utility bills.  Conventional tanks also require a great deal more space in order to store this water.

What are the benefits of tankless water heaters?

Reduced energy consumption and lower monthly utility bills are the primary benefits of instant hot water heaters. They are highly efficient and ultimately better for the environment. Tankless water heaters are also small—about the size of a travel suitcase—so they may be placed in more centralized household locations thus cutting down on the time it takes for water to arrive at its designated location.

How much do tankless water heaters cost?

Of course, this varies by brand and by personal preference. In short, on-demand water heaters will cost more money up-front.  Tha’ts reality. The installation process is complex and requires attention to: ventilation, gas supply, water quality, and electrical connections. But keep this in mind: tankless water heaters use significantly less energy than conventional tanks that are always in a state of heating water.  Tankless heaters remain a good long-term investment because they typically cut down on monthly utility bills and require less maintenance over time. In addition, you won’t need to replace a tankless as often as you would a conventional unit, so you save money there, too.


If you are considering getting a tankless water heater installed into your home, need your tankless water heater to be repaired, or have any questions pertaining to tankless units, look no further than Arnett’s!

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