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What Is Involved with Installing a Tankless Water Heater?

Last updated 5 years ago

Tankless water heaters are the latest trend in home renovations, but most homeowners are hesitant to deal with major renovations due to the time, cost, and inconvenience. Fortunately, tankless water heaters are a relatively simple and painless way to reduce your long-term water heating costs and make your home more efficient. Here’s an overview of what’s involved in the installation of a tankless water heater:


Due to their compact size, tankless water heaters can be installed virtually anywhere in your home depending on the size and type of your tankless unit (whole-home or point-of-use). These units are available in gas or electric configurations and can be placed indoors or outdoors. Indoors gas units will require venting to supply oxygen to the pilot flame and to allow exhaust gases to escape.

Venting/Electrical Modifications

Depending on whether your system is powered by gas or electricity, your home may require minor modifications. Whereas traditional gas water heaters require a vertical exhaust line through the roof, venting for indoor gas water heaters can route either vertically or horizontally through the walls or roof, depending on your needs. Special concentric units use a single exhaust for both air intake and outtake, and are also designed to contain any potential leaks in the piping. Whole-home electrical units may require a modified power supply to function efficiently.

Tankless Unit & Gas Line Sizing

Depending on the proximity of a tankless water heater to the gas source, the line will have to be appropriately sized in order to ensure a constant pilot flame. Electrical units are generally more efficient than gas-powered water heaters, but they may also have lower flow rates. An installation specialist can assess the appropriate gas line and water heater size for home’s water usage.

Cost savings is always a priority for homeowners, and we here at Wholesale Tankless, Inc. offer unbeatable warehouse discounts on a wide range of Rinnai water heater products. Just call (877) 278-22653 or contact us online for more information.


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