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Best Tankless Hot Water Heater for Off-Grid

Best Tankless Hot Water Heater for Off-Grid

6 minute read

Hot water is undoubtedly a privilege that is missed when it is unavailable. Even before interacting with an off-grid scenario, hot water can appear to be a formidable obstacle. Fortunately, more off-grid water heater options are available than ever. So, let's get into the best tankless hot water heater for off-grid!

Tankless Waters Heater for Off Grid:

This is excellent news, as an electric water heater cannot be used off-grid. The heating element consumes excessive amounts of electricity. 

Tankless, on-demand water heaters are super efficient, off-grid devices. 

This article will list the best off-grid water heaters available on the market. Among numerous options, these are the three best brands and models for off-grid hot water heating. The products in question are Eccotemp, PrecisionTemp, and Nortiz.

Precision Temp Tankless Hot Water Heaters

RV-550 EC Tankless Water Heater

This tankless water heater has 55,000 BTUs, and the RV-550 EC has the highest hot water output in the industry. Equipped with freeze protection, it provides continuous hot water on demand when the outlet is turned on.

The VariFlame control system is dependable, maintaining a constant and stable water temperature irrespective of the flow rate or incoming water temperature. According to reports, it uses up to 50 percent less propane or natural gas.

This water heater is primarily designed for RVs, Trailers, Small Houses, and Cabins and features sidewall ventilation. A ten-gallon tank occupies half the space and weighs one-third as much as this one.

RV-550 NSP EC Tankless Water Heater

RV-550 NSP EC Full gas modulation is utilized by propane or natural gas tankless water heaters. It is ventilated through the floor with cold-weather protection and no penetration of the sidewalls.

It averages one-third as much weight and occupies one-half as much space as a 10-gallon tank. The VariFlame control system has demonstrated its dependability.

ShowerMate M-550 EC Propane Tankless Water Heater

It is primarily designed for aquatic environments and is ideal for the boater who does not wish to sacrifice home comforts while on the open seas. It can be mounted virtually anywhere with a standard power vent and does not require an engine or shore power.

TwinTemp-2 Tankless Propane Water Heater

TwinTemp-2 offers improved efficiency, quiet operation, and safer flue gas temperatures, and it operates on both propane and natural gas.

The TwinTemp-2, equipped with two 1500-watt electric elements, provides continuous hot water on demand and hydronic space heating. With a 55,000 BTU propane burner, it has the industry's highest hot water output. It is a lighter, more space-efficient design ideal for tiny homes.

TwinTemp Junior Propane Tankless Water Heater

It includes one heating zone with up to six whisper-quiet blowers that emit no diesel odor. It has a 55,000 BTU burner and a 1,500-watt electric element, making it ideal for a small, off-grid dwelling. 

TwinTemp Junior Propane Tankless Water Heater

TwinTemp Junior Propane Tankless Water Heater


On-Demand Hot Water & Hydronic Heat One heating zone with up to six blowers. Whisper quiet operation and no diesel smell. Designed specifically for RVs, Buses, Tiny Houses, Barns, and more Whisper-quiet operation and no diesel smell Dimensions 20.5” wide… read more

Eccotemp Tankless Hot Water Heaters

Eccotemp 20H Outdoor 6.0 GPM Liquid Propane Tankless Water Heater

This tankless water heater is favorable for those who desire a flexible, cost-effective solution - perfect for Off-Grid living. 

Rated at an impressive 6.0 gallons per minute (GPM) and 150,000 BTU per hour, the Eccotemp 20H-LP can meet all the hot-water needs of a standard home, apartment, or Off-Grid living. Supporting up to one or two bathrooms. 

The Eccotemp is alluring because it is a high-quality, outdoor-use water heater. This makes one wish they had this many years ago when they probably used so much cold water while building a home and undergoing inspections.

Manual water temperature regulation features allow you to optimize propane usage and maximize comfort. With its fully automated control system, the Eccotemp 20H-LP only pulls about .6 amps during operation.

Noritz Propane Condensing Tankless Hot Water Heater

Noritz is one of the lesser-known but well-respected manufacturers. They are experts in tankless gas water heaters.

Noritz is a Japanese company that has existed for more than six decades. They introduced their first electronically controlled tankless water heater in 1981, and in 2002 they opened offices in California and Georgia and commenced operations in the United States.

Noritz is renowned for producing high-quality tankless gas water heaters. Here are a few features that distinguish them from the competition:

EZ Series

Noritz's most prevalent line of tankless water heaters is the EZ series. The series was created to simplify the installation process for homeowners who wished to switch from a tank-style to a tankless water heater.

Wi-Fi Functionality: Several of their more recent models are compatible with the Noritz Connect application.

Download the app and pair it with your tankless water heater to gain remote control over it. Even diagnostic and maintenance reminders can be set.

Low and Ultra-Low NOx: To reduce pollution, Noritz offers a variety of tankless water heaters with Low and Ultra-Low NOx.

Energy Star Certification: Most tankless water heaters manufactured by Noritz are Energy Star Certified. 

Purchasing an appliance with the Energy Star label will not only lower your utility bill, but it will also be better for the environment. Numerous Noritz units qualify for rebates.

Suitable for a whole household and constant use due to its high flow rate - This model may cost more than others in home improvement stores. Still, it receives excellent reviews, and as someone guilty of purchasing a less expensive water heater, you should consider spending a little more on it.

The Noritz's tankless water heater is covered by a 12-year warranty, an exceptionally long period. At 65 pounds, this heater is not as difficult to install as other heaters.

EZ Series Tankless Water Heaters

Concluding The Best Water Heaters for Off-Grid

The reality is that most homes are not designed to function well off-grid, so taking small, cost-effective steps toward off-grid objectives is typically advantageous.

However, those who can become off-grid will benefit significantly from electricity budget cuts and energy savings, which is the most environmentally friendly energy source.

If you're looking for a tankless water heater, feel free to check out our collection of tankless water heaters or shop by brand with Rinnai, Eccotemp, or PrecisionTemp

Want More Water Heater Knowledge?

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Need Help?

Have questions about the best tankless hot water heater for off-grid or need help deciding what tankless water heater is perfect for you? We would love to assist you in finding the best product for you! Please feel free to reach out to one of our product experts by chatting with the chat button in the bottom right, calling us at +1 (256) 633-6553, or emailing us at

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