Calentadores de agua sin tanque para vehículos recreativos

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A tankless RV water heater heats water on demand rather than storing it in a tank, which means you are not limited to the 6 or 10 gallons a traditional unit holds. This makes them a popular upgrade for full-timers and anyone who wants more flexibility for showers and dishwashing without waiting for a tank to reheat.

Our tankless water heater selection includes units from Furrion, Fogatti, Suburban, and Girard. Most are designed to fit into the same exterior opening as a standard tank water heater, making them a practical replacement option. Door kits are typically sold separately, so confirm the cutout dimensions of your existing unit and check door compatibility before ordering.

What is an RV tankless water heater and how does it work?

An RV tankless water heater heats water on demand as it passes through a heat exchanger, rather than storing 6 or 10 gallons in a tank. Most RV tankless models burn LP gas and use 12V DC power for ignition and controls. Hot water continues as long as your LP and fresh water supply last, so you don't wait for a tank to recover between showers. This is the main reason full-timers choose a tankless unit when replacing a failed tank heater.

Will a tankless water heater fit my camper's existing water heater opening?

Many tankless water heaters for campers are built to retrofit into the opening left by a 6 or 10 gallon tank unit, but exterior dimensions, door sizes, and mounting methods vary by brand. Before ordering, measure the height, width, and depth of your current cutout and compare it to the dimensions on the product listing. Some models include a new exterior door; others reuse your existing one. If you are keeping a tank unit, replacement doors for Dometic 6 gallon water heaters are sold separately.

How is an on demand RV water heater different from a tank water heater?

A tank water heater stores and reheats a fixed volume of water and often has a 120V electric element for use on shore power. An on demand RV water heater has no stored volume, so output depends on flow rate (GPM) and incoming water temperature. Most tankless units need a minimum flow to ignite, which matters if you use a low-flow shower head. If you want electric heating on shore power or stored hot water, compare 10 gallon RV water heaters and Dometic 6 gallon RV water heaters before deciding.

What is the best tankless water heater for an RV?

The right tankless unit depends on your RV, not a single model. Start with the opening size, then compare the GPM rating at your expected temperature rise, the BTU input, the minimum activation flow, and whether the unit has freeze protection for cold-weather camping. Our selection covers tankless models from multiple manufacturers. If you are unsure which unit fits your rig, text or call 817-984-1852 with the make and model of your existing water heater and our team will confirm the correct fit.

Does a tankless RV water heater need winterizing or regular maintenance?

Yes. Water left inside a tankless heat exchanger can freeze and crack it, so drain the unit or bypass and blow out the lines before storage in freezing temperatures. Most RV tankless models do not use an anode rod, but periodic descaling with a vinegar flush is recommended if you fill from hard water sources. Check each listing for the manufacturer's freeze protection and maintenance guidance. Orders over $100 ship free.