Best on Demand Water Heater Reviews 2022

In recent days, water heaters have become popular among many people. The best on-demand water heater can be used for multiple purposes, such as bathing and running the dishwasher.

I know that visiting a cold climate is your hobby. But it would help if you had a hot shower to protect you from freezing. Here are the factors to consider.

Costs. The costs may include the installation costs, maintenance costs, and costs of water heating. Consider what energy source and fuel type you will use. Also, think about its price and availability.

Size of the water tank heater. Make sure you provide your family with adequate hot water. To increase efficiency, purchase a well-sized water heater.

Performance. Let your new heater deliver the maximum benefits. You can use it to wash your dishes, running the dishwasher, among other things.

Energy efficiency. Choose a model that has a high-performance level. Let your water heater save your money, costs, and energy.

Comparison Table Best on Demand Water Heater

Prices pulled from the Amazon Product Advertising API on:

Top 6 Best on Demand Gas Water Heater – In Depth Reviews

1. EcoSmart ECO 11 Electric Tankless Water Heater

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating TechnologyWater Heater

This is an advanced water heater that you can’t afford to miss. According to the statistic, it is the best water heater. You will love its performance, installation, and heat flow, and output.

Its sleek, proper, and wall-mounted design allows it to free up more floor space hence being suitable for more storage.

EcoSmart ECO 11 has an endless hot water feature. This means that when sized correctly and adequately, the model will offer you continuous hot water. It heats water evenly as it passes through and over the unit.

This model only consumes the amount of energy needed; hence the user will have complete control. Don’t be surprised, EcoSmart is the product you need if you want to save your space. It also keeps your money and energy.

The best thing about this model is that you only turn on when you need hot water. Kindly enjoy its lifetime warranty. When purchasing it, please verify its electrical requirements and the right size. I recommend you to buy this model.


  • Offers more storage space due to its compact design.
  • Saves more than 50% water heating costs.
  • Digital temperature control.
  • Consistent, instant as well as endless hot water.
  • Heating elements are easily replaceable and durable.


  • Has a limited lifetime warranty.

2. Eccotemp L10 Portable Outdoor Tankless

Eccotemp L5 Portable Outdoor Tankless Water Heater w/ EccoFlo Diaphragm 12V Pump and Strainer

Here comes the model that you have looking to have. Eccotemp L10 shares various features that define its quality.

The model is just durable, with its safety shut off, which is activated when a unit runs longer or exceeds 20 minutes the product is just perfect. 

Moreover, Eccotemp L10 is easy to carry, lightweight, compact, making it suitable and great for your camping. Also, you can use it to wash your pets, off-grid applications, and use.

When lounging around a pool, this is all that you need to enjoy a nice shower. The model runs on a proper and standard 20 lb. And is equipped with the electronic ignition hence reliable. 

You don’t have to struggle with the ease of installation is simple and easy. Remember that Eccotemp comes with rain cap, regulator and installation accessories.

Additionally, it is easy to apply temperature controls, making you enjoy a hot water environment anywhere. I suggest you purchase this water heater if you want to perform well in your outdoor showers.


  • Easy to use, setup and installation.
  • Field tested up to 5,500 feet of elevation.
  • The model is durable.
  • Works seamlessly and properly with any hose and showerhead.
  • Great for camping and outdoor showers.


  • Requires up to around 80 PSI.
  • Can experience minor flow delays.
  • When water temperatures rise the flow rate may slow.

3. Girard 2GWHAM On-Demand Tankless Water Heater

Water HeaterGIRARD 2GWHAM Tankless Water Heater

This is the product that you have been dreaming to have. Its performance will amaze you. The model can regulate and manipulate the burner to maintain the set temperature of hot water.

The winter is around the corner, and Girard 2GWHAM is designed for winter purposes. Let it protect you from freezing.

The research shows that more than 40 percent of water heater users use this model. Using Girard water heater sounds to be an experience.

Endless hot water in this model is easy to operate. You only need to turn on the warm water and add the cold water that suits your needs.

I like this model. Indeed, its quality is defined by what it delivers to you. The onboard tech microprocessor controls and monitors the incoming icy and chilly water temperatures.

It also controls the flow rate as well as the outgoing burning water temperature. This is to maintain a steady and constant hot water flow. All in all, purchase it and you won’t regret it.


  • The model is super quiet.
  • Easy to install, use and operate when it comes to temp controls.
  • Quickly heats up your water.
  • Excellent water temperature for maximum comfort.
  • Durable and stronger version.


  • Can be expensive for some people.

4. Takagi T-H3J-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater

Takagi T-H3J-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 6.6-Gallon Per Minute Water Heater

This model comes with amazing benefits. Our research from various customers shows that this product is very popular in the market. Many water heater users say it is their favorite brand.

The outlet and inlet thermistors contained in it helps in maintaining a constant temperature. It also monitors the rate of temperatures. It is aimed to offer you satisfaction when it comes to indoor showers.

The model has a proper flow rate of around 6.6 GPM of H2O. This rate will assure you of a steady and stable supply of water. This is an advantage when compared to other models.

Remember that other models normally limit water heating system activities. With this model, you will enjoy a good flow hence enough hot water for your entire household.

The gas output is another feature. Takagi does not require electricity since it works well on natural gas. The gas comes with an input between 19,500-140,000 BTU/h.

This makes you trust the model’s capabilities as it will respond well to your demand. Temperature checks and 40-Gallon Volume/capacity are vital.

It makes it look small in size; hence the space required for installation is minimum. Thanks to its size. I can advise you to purchase this model and enjoy the maximum benefits.


  • Requires a small space for installation.
  • Very affordable.
  • Has a consistent flow rate.
  • Lightweight and convenient size.
  • Has a reliable temperature check control.


  • Not ideal when it comes to a huge family.
  • Expensive installation.
  • Wrong installation may result to leakage.

5. Rheem RTGH-95DVLN

Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater Water Heater

Rheem has become a favorite model for many users. The statistics suggest that in every ten heater water users, at least four have installed this model.

It has 95 percent energy efficiency with the stainless-steel condensed heat exchange. This helps in regulating the amount of energy required in the system.

It has intelligent electronic controls that are designed to increase safety. Imagine with it you can take two showers, do the laundry, run the dishwasher and hand wash your pan. It utilizes energy very sparingly, hence a massive and proper output capacity.

Prepare to challenge the cold climates with Rheem. The product offers sufficient services, and the ease of installation is just simple.

Its high altitude capability that is approximately 9,840 feet elevation is just excellent. This supports the rate of hot water flow.


  • Easy installation.
  • Has safety features.
  • Equipped to deal properly with freezing temperatures.
  • Easy and simple to use electric temperature control.
  • Suitable for larger households.


  • Is an expensive tankless model.
  • Not suitable for small homes.
  • If not used properly it can damages.

6. Sio Green IR260 POU Electric Tankless Water Heater

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology Water Heater

This model has been making headlines in recent days. This is according to the research done by consulting customers. They have many reasons why they prefer this model.

You always get hot water without any hassle anytime. This makes you enjoy the hot shower and also use warm water to wash your dishes.

With it, no corrosion patented technology and no maintenance. This means that the model can easily create heat with no direct contact with metallic elements.

This will protect it from corrosion, calcium buildup and limescale deposit. This will also ensure a 0% maintenance cost.

Furthermore, Sio Green IR260 POU will save your kitchen and bathroom space. This is because of its compact design. With its 20 inch length and less, the model is best in small storage, sink, kitchens, and cabinets.

Its allows you to install it anywhere. Enjoy smooth and quick installation by purchasing this product. I suggest you try it.


  • Easy and quick installation.
  • Suitable temperature adjustments.
  • Ideal for industrial and business applications.
  • Durable.
  • Free maintenance costs.


  • Wrong installation may result to leakage.
  • Expensive installation.
  • Inappropriate temperature adjustments may lead to leakages.

Things to consider when choosing the best water heater

Are you planning to purchase a water heater? The decision to select the best heater is a problem for some people. Most of them do not understand the various metrics you should pay attention to when buying a water heater.

We use water heaters every day to perform multiple commercial and residential activities. Without them, taking showers, washing dishes, doing laundry would be just unbearable.

Ensure you suit your needs with the best water heater. Let us look at things you should consider. Here is the buying guide for you.

Tank Size

Did you know that water heaters are of different sizes? Yes, they do. It is to facilitate households with different needs and satisfaction. If your family is large, you will be forced to buy the model which has a large tank.

The size will ensure that at least everybody will have a hot shower at any time. This is where a rule of thumb is applied. Get a 40-gallon tank suitable for 1-4 people or a 75-gallon tank ideal for 6-8 people. It’s you to decide.

Make sure you make a wise decision. Also, if you want to enjoy a large tank, be ready for substantial energy costs. Before you buy it, think about a high recovery system. Ensure that the volume of your existing gas piping and exhaust pipe are compatible.

Type of Energy

We all know that most common residential water heaters use electricity or natural gas. Switching from this type to another one requires additional costs. Things like venting, gas piping, or electrical works may be expensive for you.

If your model is natural gas-fired, make sure that your gas provider or supply is propane. You can also use natural gas. If your taste is electricity, make sure the amount of power is enough to support your model.


You have to consider this. Energy efficiency is a requirement. In most cases, it depends on the type of environment you live in. Different water heaters may save money and more energy for you than others.

Choose the one that will satisfy your needs. If you prefer an efficient and high-rated water heater, get to know about a tankless water heater.

However, take time before buying one. Don’t just buy because others are buying. Remember that a tankless water heater installation requires significant investments.

Do your budget first! Also, revamping your current gas pipe and venting needs more money.


This is something you need to know. Before purchasing your water heater, check the assurances given. In most cases, the warranty runs between six-twelve years when we come to the tank.

Make sure the model you choose has a suitable length coverage. If your product fails during an installation, the manufacturer will compensate you. They may also assist you.

Installation Cost

Pay more attention to the installation cost. This is the amount you will pay for retrofitting your gas pipes and venting construction. A tankless gas heater has higher installation costs as compared to a tank heater.

Ensure that you consult your plumber to determine the total cost. Also, hire a qualified plumber who can do a good job.

I recommend you to make the best choice. Let these factors be in your mind. This buyer guide will add you to the knowledge that is efficient and reliable.

After checking it, you can now visit the market and select the best model. How o clean check here

Final Verdict

In our post, Eccotemp L10 Portable Outdoor Tankless is the best model as compared to others. Its high-quality features make it the most preferred water heater.

First, Eccotemp has a high capacity. It means that the model is designed for outdoor and other commercial purposes. This shows that this model has a high-performance level than others.

Also, this product has multiple applications. You can easily use two showers simultaneously, end to end with a faucet. Digital temperature control is another advantage that you will enjoy with this brand.

It enables you to control and monitor both water flow and temperature. It will also help to prevent installation errors.

Finally, the ease of installation is simple. That’s a good reputation and will support a hot shower wherever you spend your vacation. I recommend you to get this model and enjoy the maximum benefits.

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