An increasing number of homeowners, condo residents, and others who need on-demand hot water are turning to tankless gas water heaters. Their small size, energy-saving properties, and continuous hot water supply make them a pragmatic option. Nevertheless, for you to fully enjoy these advantages, it’s vital to select the appropriate tankless gas water heater that suits your requirements.
The best tankless water heater should have a high hot water flow rate, excellent energy efficiency, and be of high quality to ensure it lasts long. Moreover, it should be able to meet the hot water demands of your household size. Choose one that is too small, and you will experience cold showers and inadequate hot water; go too large, and you could be wasting energy and money.
When purchasing a tankless gas water heater, it’s also important to consider factors like the climate you live in, fuel source availability, and the structure of your house. The heater’s energy factor (EF) rating should also be a significant point of focus, as this indicates its energy efficiency.
In this article, we will guide you through the process of choosing the best tankless gas water heater. We have researched and tested various water heaters to identify the ones that can offer the superior performance, fuel efficiency, and durability that you are looking for. By the end of this article, you’ll have all the information you need to make an informed decision and choose the perfect tankless gas water heater for your home.
Best Tankless Gas Water Heater
Choosing the right tankless gas water heater is essential for a steady, energy-efficient, and reliable supply of hot water. It’s a decision that can significantly impact your home comfort and utility bills. With numerous options available on the market, picking the best one can be daunting. In this guide, we have compiled a list of the best tankless gas water heaters, factoring in performance, energy efficiency, and dependability to aid you in making an informed choice.
Natural Gas Tankless Water Heater 3.6 GPM, 80,000 BTU Indoor Installation Instant Hot Water heater
If you’re looking for a powerful and efficient natural gas tankless water heater, the ZENNER 3.6 GPM 80,000 BTU indoor model is worth considering.
Pros
- The large flow rate of 3.6 GPM makes it ideal for homes with multiple bathrooms and high hot water demand.
- The powerful 80,000 BTU burner ensures quick and efficient water heating, even in colder climates.
- The compact and stylish design makes it a great addition to any modern bathroom.
Cons
- The installation process can be challenging, especially if you’re not familiar with plumbing and gas lines.
- The unit can be noisy during operation, which may be a concern for some users.
- The price point is higher compared to some other tankless water heaters on the market.
We’ve used the ZENNER 3.6 GPM 80,000 BTU indoor tankless water heater for several weeks, and we’re impressed with its performance. The large flow rate ensures that we have an endless supply of hot water, even during peak usage times. The powerful burner heats up the water quickly, and we appreciate the energy-efficient design that saves us money on our utility bills.
The installation process was a bit challenging, but the detailed instructions and video tutorials provided by the manufacturer helped us get it up and running. We recommend hiring a professional installer if you’re not confident in your DIY skills.
Overall, we’re happy with our purchase of the ZENNER 3.6 GPM 80,000 BTU indoor tankless water heater. It’s a reliable and efficient appliance that provides us with an endless supply of hot water, and its compact design fits perfectly in our modern bathroom.
Rinnai V53DeN Tankless Hot Water Heater, 5.3 GPM, Natural Gas, Outdoor Installation
If you’re looking for a reliable and efficient outdoor tankless water heater, the Rinnai V53DeN is definitely worth considering.
Pros
- With a 5.3 GPM flow rate, this heater can supply an endless amount of hot water to multiple outlets simultaneously.
- The Condensing Technology and low NOx burner system reduce energy consumption and emissions.
- The direct vent system allows for installation in areas with limited venting options.
Cons
- The installation process can be time-consuming and requires professional assistance.
- The heater may not be suitable for areas with extreme weather conditions.
- The price point is higher compared to other tankless water heaters in the market.
We have used the Rinnai V53DeN for a few weeks now, and we are impressed with its performance. The heater is capable of providing an endless supply of hot water, which is perfect for our household needs. The Condensing Technology and low NOx burner system also make it an energy-efficient option.
The direct vent system is another standout feature, as it allows for installation in areas with limited venting options. This can be particularly useful for those who live in apartments or have limited space.
However, the installation process can be time-consuming and requires professional assistance. Additionally, the heater may not be suitable for areas with extreme weather conditions.
Overall, if you’re looking for a reliable and efficient outdoor tankless water heater, the Rinnai V53DeN is definitely worth considering. Its high flow rate, energy-efficient features, and direct vent system make it a great option for those who need a constant supply of hot water.
Rinnai RU199iN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Indoor Installation
If you’re looking for a reliable and efficient tankless water heater, the Rinnai RU199iN Condensing Tankless Hot Water Heater is a great option.
Pros
- The Rinnai RU199iN is Energy Star certified, which means it meets strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the U.S. Department of Energy.
- With a maximum flow rate of 11 gallons per minute (GPM), this tankless water heater can provide a constant supply of hot water for multiple applications simultaneously.
- The condensing tankless water heater design extracts more heat from the same amount of natural gas, providing energy savings and a smaller carbon footprint.
Cons
- The Rinnai RU199iN is a bit pricey compared to other tankless water heaters in the market.
- The installation process requires a dedicated space with proper venting, which may require additional expenses.
- The unit is relatively heavy, weighing 102 pounds, which may require additional assistance during installation.
The Rinnai RU199iN Condensing Tankless Hot Water Heater is a great investment for those who want a reliable and efficient water heating system. Its Energy Star certification and condensing tankless water heater design make it an eco-friendly and cost-effective option. However, its price and installation requirements may not be suitable for everyone.
The Rinnai RU199iN is a powerful unit that can provide a constant supply of hot water for multiple applications simultaneously. Its maximum flow rate of 11 GPM makes it ideal for larger households or commercial applications. The unit is also easy to install and operate, with simple controls and clear instructions.
Overall, the Rinnai RU199iN Condensing Tankless Hot Water Heater is a great choice for those who want a reliable and efficient water heating system. Its pros outweigh its cons, and it is definitely worth considering if you’re in the market for a new water heater.
Ecosmart E042-SS Electric Tankless Water Heater
If you’re looking for a reliable and energy-efficient tankless water heater, the Ecosmart E042-SS Electric Tankless Water Heater is a great option.
Pros
- The self-modulating technology allows for a constant flow of hot water, ensuring that you never run out of hot water.
- The digital display and remote control make it easy to adjust the temperature and settings.
- The unit is compact and lightweight, making it easy to install and fit in small spaces.
Cons
- The unit may not be able to handle high hot water demand, which could result in a decrease in water pressure.
- The installation process may be more difficult than other tankless water heaters due to the need for a dedicated circuit.
- The unit may not be suitable for larger homes or businesses with high hot water demand.
The Ecosmart E042-SS Electric Tankless Water Heater is a great choice for those looking for an energy-efficient and reliable tankless water heater. The self-modulating technology ensures that you always have hot water available, and the digital display and remote control make it easy to adjust the temperature and settings. However, the unit may not be able to handle high hot water demand, and the installation process may be more difficult than other tankless water heaters. Overall, the Ecosmart E042-SS Electric Tankless Water Heater is a solid choice for those looking for a reliable and energy-efficient tankless water heater.
FOGATTI Natural Gas Tankless Water Heater, Indoor 5.1 GPM, 120,000 BTU Instant Hot Water Heater, InstaGas Classic 120 Series
If you’re looking for a reliable and efficient tankless water heater, the FOGATTI Natural Gas Tankless Water Heater is a great option.
Pros
- The patented self-cleaning combustion technology ensures that the heating unit stays clean and free from scale, prolonging the life of the heater.
- The high-density stainless steel heat exchanger effectively enhances heat transfer, making the water heating more efficient.
- The large flow rate of 5.1 GPM can meet your family’s demand for hot water, and the high altitude can reach 6.2 GPM.
Cons
- The installation process requires professional assistance, which may add to the overall cost.
- The unit may emit a strong gas odor during the initial ignition, which can be concerning for some users.
- The temperature settings may require some trial and error to find the optimal setting for your needs.
We’ve been using the FOGATTI Natural Gas Tankless Water Heater for a few months now, and we’re impressed with its performance. The self-cleaning technology is a standout feature, as it ensures that the heater stays in top condition without any additional maintenance required. The high-density stainless steel heat exchanger is also impressive, as it significantly reduces the energy consumption required to heat the water.
One thing to keep in mind is that the installation process requires professional assistance, which may add to the overall cost. However, the peace of mind that comes with knowing the installation was done correctly is well worth it. Additionally, during the initial ignition, the unit may emit a strong gas odor, which can be concerning for some users. However, this is a common issue with gas-powered appliances and should dissipate quickly.
Overall, we highly recommend the FOGATTI Natural Gas Tankless Water Heater for anyone in the market for a reliable and efficient tankless water heater.
Buying Guide
When looking for the best tankless gas water heater, there are several factors to consider. We have used and tested various models to identify the key features that make a tankless gas water heater stand out. Here are some important factors to keep in mind when making your purchase:
1. Heat Output
One of the most important factors to consider when choosing a tankless gas water heater is the heat output. This is measured in British Thermal Units (BTUs) per hour and determines how much hot water the heater can produce. It is important to choose a heater with a high enough heat output to meet your hot water needs.
2. Flow Rate
Another important factor to consider is the flow rate. This is the amount of water that the heater can heat per minute. It is important to choose a heater with a high enough flow rate to ensure that you have a steady supply of hot water.
3. Efficiency
Efficiency is another important factor to consider when choosing a tankless gas water heater. Look for a heater with a high Energy Factor (EF) rating, which indicates how efficiently the heater converts natural gas into hot water.
4. Size and Weight
Tankless gas water heaters come in a variety of sizes and weights, so it is important to choose a model that fits your space and installation requirements. Consider the size of the heater and its weight when making your purchase.
5. Warranty
Finally, consider the warranty when choosing a tankless gas water heater. Look for a heater with a comprehensive warranty that covers both parts and labor. This will give you peace of mind and protect your investment.
By considering these factors, you can choose the best tankless gas water heater to meet your hot water needs.
