The Adapt™ Gas Tankless Family
Adapt™+ Premium Condensing
American’s ADAPT™+ Premium condensing gas tankless water heaters available in 180k, and 199k BTU/Hr, deliver robust, on-demand performance and the flexibility to install in practically any residential setting.
There are two design options available including models with integrated X3® Scale Prevention Technology, and Bypass (M) models. Easily add scale prevention protection to any M model by replacing the bypass cartridge with an optional X3 cartridge sold separately. X3 Scale Prevention Technology helps protect the heat exchanger resulting in up to three times longer life than a standard tankless water heater while maintaining like-new performance.
The ADAPT™+ Premium line with integrated recirculation pump features a built-in control display for setting and reviewing up to two recirculating schedules, as well as checking heater status and error codes. Manage temperature settings and activate the heater and recirculation remotely with optional kits (sold separately). All models are ENERGY STAR® certified and extremely efficient with a Uniform Energy Factor of 0.95, and also comply with Ultra-Low NOx regulations.
All ADAPT™+ Premium models are field convertible from Natural Gas to Liquid Propane, kit included, and can be installed indoors or outdoors (with an Outdoor Vent Cap Kit sold separately). Cascade up to 12 like heaters together for larger applications requiring multiple water heaters to work in conjunction, cable included.
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How Adapt™+ Premium Condensing Works
When you open a hot water tap, cold water flows into the tankless unit and through American’s X3® Scale Prevention Technology cartridge, which stops minerals from bonding and forming scale. This innovative design allows particles to pass harmlessly through the system, eliminating the need for regular descaling and helping your water heater last up to 3x longer than conventional tankless models.
Once treated, the water moves through a primary heat exchanger, where it is rapidly heated. American's condensing tankless units deliver endless hot water on demand, save space, and operate only when needed, reducing standby energy use. Paired with a 15-year limited warranty, these water heaters are built for long-lasting performance, lower maintenance costs, and consistent comfort. There are no hard water warranty exclusions with X3-equipped models.
Features and Benefits
How It Works
Application and Installation
Still Have Questions?
Is a gas tankless water heater better than a tank?
A gas tankless water heater is more efficient than a conventional tank water heater, as it doesn't require energy to keep a reservoir of water heated around the clock. Water flows to a heat exchanger that immediately heats the water using hot exhaust gasses. According to the U.S. Department of Energy, a tankless water heater is up to 34% more energy efficient than a tank water heater for homes using less than 41 gallons of water per day and up to 14% more efficient for homes using 86 gallons of water daily. It's also more compact than a tank water heater, saving space.
How do you vent a condensing tankless water heater?
Tankless water heaters offer the option of venting through an exterior side wall instead of through a chimney flue on the roof. Water heaters that are direct venting have two vents — one that pulls in air from the outside and one that carries away exhaust. Power venting water heaters draw air from inside the room and have only a single vent for exhaust. While non-condensing tankless water heaters require thick metal venting to handle the temperature of heat that's released, condensing tankless water heaters can use plastic venting such as PVC. They have already used the hot vapors to heat more water, leaving only cooler fumes for ventilation.
How long does a condensing tankless water heater last?
American tankless water heaters boast industry-leading 15 year limited warranties. While the lifespan of a gas tankless water heater can vary, factors like water conditions, usage rates and maintenance all contribute to your water heater’s health. New condensing units come equipped with X3® Scale Prevention Technology that extends life up to three times longer.
How do I determine which Adapt™ gas tankless water heater I need?
Tankless water heaters have different flow rates measured in gallons per minute (GPM), which indicate the amount of water they can deliver at a time. Because these water heaters don't maintain a supply of hot water in a tank, you need to choose an appropriately sized tankless model based on household needs. The ideal output rate for your home depends on the number of people in the residence, the appliances you use, and the original temperature of the water being heated. Some people install more than one tankless water heater based on their requirements. Check out our water heater selector to help choose the best water heater for your needs.
What should I consider before installing a gas tankless water heater?
• What do I need?
Before installation, you will need to determine the incoming ground water temperature, the ideal location in your home, and the correct water heater size required for your needs.
• Where to install?
A tankless water heater can be installed anywhere in your home with the correct piping—closets, garage, bathrooms, etc. In warmer climates where there is no risk of freezing, a tankless water heater may be installed on the exterior of the home to save on interior space.
