Best Off Grid Water Heater with Complete Guide

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An off-grid water heater uses to heat water without an electric connection. The off grid propane water heater is used for a renewable energy source, such as solar energy or wind energy, to heat the water. It then stores the heated water in a storage tank of off grid water heaters, allowing hot water to use on your demand. The off grid water heater is becoming more popular because people are looking for ways to reduce their reliance on traditional energy sources.

How to make a off grid water heater? 

If you make an off grid water heater for heating water, you should know the right instruction, but how to make a off grid water heater? Don’t worry! If you carefully read these tropics, I ensure you can make it off the grid hot water heater.

Gather off Grid materials: If you are setting up a basic off-grid water heater, you’ll need a large water tank, a pump, an immersion heater, and a solar panel.

Install the water tank:  The tank should be installed in a location exposed to direct sunlight for the full day.

Connect the pump to the water tank: Then, you need to connect the pump to the water tank with a flexible hose pipe.

Install the immersion heater: Place it in the water tank and plug it into an electrical outlet.

Connect the Solar Panel to the Pump: The next step is connecting the solar panel to the pump with a solar charge controller system.

Set the Timer: It is essential to set the timer on the solar charge controller to turn on the pump when the sun is in its peak hours.

Turn on the pump: The final step is to turn on the pump to begin heating the water in the tank.

Enjoy hot water: Once it is heated, it will be ready to use and enjoy!

1. EcoSmart ECO 11 Electric Tankless Water Heater

EcoSmart ECO 11 Electric Tankless Water Heater

Each Eco Smart tankless water heater delivers endless hot water, and it also saves space, time, and money and allows you to reduce energy and water use. The ecosmart eco 11 electric tankless water heaters 120v is continuously monitored water temperature control flow rates, and it will ensure efficiency and consistence performance within 1 degree of the selected temp.

It saves up to 90% space and is smaller than a traditional tankless water heater. In addition, the 13-kilowatt tankless water heater is ideal for providing hot water for a bathroom, small sink, office break room, and other points of low-flow applications.


  • It is space saves up to 90%
  • Digital temperature control off grid hot water heater Energy sufficient
  • It is a good design and a great price point


  • The unit powered up but did not turn on when the water flow started.

2. Stiebel Eltron Tankless Heater

Stiebel Eltron Tankless Heater

If you are looking for a temper 12 plus electric on the demanded water heater, the Stiebel Eltron tankless heater is the perfect match for you. The water off-grid continuous flow water heater is advanced control patented technology invented by Stiebel Eltron water heater. It is fully automatic maintenance water temp control and a constant comfort heater. 

The water heater will reduce the flowing water slightly if hot water demand exceeds capacity. In addition, the off grid water heater is a space and energy saver. It is small design sleek white design saves space yet still provides endless hot water for your whole house. The eco-friendly unit saves energy saver heater, is auto-modulated, and can control water flow electronically. 

Above all, the water heater is a 12kw model, 240v requires a min recommended electric service of 100 a. temperatures are 68 degrees to 140 degrees Fahrenheit. It is better than other models, and you can compare it to others. 


  • Stiebel Eltron Tankless Heater is energy power saver
  • Digital temperature display
  • The solid copper heating chamber 
  • Easy operating function


  • It is no batteries included
  • It did not require batteries   

3. Stiebel Eltron 239223 Tankless Water Heater

Stiebel Eltron 239223 Tankless Water Heater

The Stiebel Eltron 239223 tankless water heater is on-demand hot water with an eco-friendly system. The water heater demands a contiguous and unlimited hot water supply and sleek design space, and no venting is required. In addition, hard-wired 240 or 208-volt service with a maximum draw of 28,800 watts at 240 volts. 

It requires 3 dedicated 40 amp breakers with 8 gauge copper wiring and a minimum of 200 amps. The German engineering Stiebel Eltron heater is a top-rated temperature off grid water heater for the whole house and also a tankless water heater with the highest performance for standards and comfort reliability. 


  • Digital displays for accurate temperature delivery
  • It is maximum energy efficiency 
  • Pre-set temperature buttons
  • It has saving and water flow monitors


  • It has to guess the load capacity
  • It is a few higher 

4. Rinnai V75iP Non-Condensing Propane Tankless Water Heater

Rinnai V75iP Non-Condensing Propane Tankless Water Heater

The Rinnai V75iP propane water heater is a pro tankless water heater off grid 7.5 gallons gas power heater. The original tankless water heater only heats when necessary to conserve energy. 

In addition, the Rinnai propane water heater is non-condensing technology and a cleaner layout heater that speeds up service. It never runs out of hot water, and a non-condensing tankless water heater is the size of a small suitcase and fits in a wide variety of spaces.

Off-grid propane hot water heater is an innovative, durable design that enhances scale detection and helps prevent severe and long-term damage to the unit.


  • Smart and durable design water heater
  • Temperature control tankless water heater
  • The profane water heater is energy saving heater
  • It is a super high-efficiency model that offers a sleek design.  


  • D does not install it without a technician
  • WiFi control not included

Off grid water heater Benefit

There is a lot of benefit of thankless off grid water heaters, and those are:

Endless hot water

When you install off grid tankless water heater it will provide you with endless on-demand hot water because it wills heats water as it passes thru the unit. Instead of hot solid water like a rational tank water heater, you can instantly run the heated water for your needs.  

Off grid electric water heater save energy. 

The off-grid electric water heater features advanced self-modulating technology, so you can only use it to heat water.

Save time:

The off the grid hot water heater point-of-use installation and on-demand heating cut down on waiting for hot water. It will save you time in heating water.

Off-grid propane water heater saves space.

A traditional thank heater takes up a lot of space, but a tankless off-grid propane water heater is 

wall-mounted and frees up floor space for more strange and 90% smaller than a tank. So inward, a tankless off-grid heater saves space.

How to heat water off grid

Solar energy system: To operate this system, you should collect and store energy from the sun is one of the most efficient and cost-effective methods to heat water off-grid. Solar hot water systems use photovoltaic (PV) panels to capture energy from the sun and use it to heat water.

Wood Stove Energy System: A wood-burning stove used to heat water in an off-grid home. You can use a wood stove to heat water for showers, baths, and others.

Gasoline Generator Energy system: A gasoline generator is used to power a water heater in an off-grid home. It is more expensive than solar, but it is a reliable way to heat water in an emergency.

Geothermal Energy System: Geothermal energy uses to heat water in an off-grid home. It involves drilling a well and pumping water through a series of pipes heated by the Earth’s natural heat.

Composting Toilet: A composting toilet is used to help generate heat for an off-grid home. It involves composting human waste and using the heat generated by the composting process to help heat water.


The off grid water heater is a reliable and automatic system for heating water. It always provides hot water if you want; no matter how much or how often you need it, the water heater serves you. In addition, a tankless water heater is smarter and more durable than a tank water heater.

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