Best Tankless Water Heater For Large Home – Review & Guide 2022

Do you own a home with three to four bathrooms, and in the morning, you run out of hot water for bathing frequently? If so, the best tankless water heater for large home can resolve your problem easily. 

A powerful heater with a large flow rate can allow you to enjoy hot water frequently in each room. 

Switching from a traditional tanked water heater to an energy-smart best electric tankless water heater for large home is one of the wisest investments you can make for your residence. 

After deploying it, you will save up to 60% on power expenditures, and you will also obtain continuous on-demand warm water. 

Moreover, a high-efficiency tankless device lasts for at least 15 to 20 years compared to the tanked one that lasts for 12 years. They also enable you to save a lot of storage space and require less maintenance than the conventional one. 

If you are ready to step into the future with an on-demand water heater, you have landed at the right place. This guide has reviewed some of the best tankless water heaters for 2 bathroom homes available in the industry for 2021. 

We are 100% sure that our review will help you choose the perfect option for your home. Our recommended machines will ensure that you never run out of warm water even if you have a large house where five to seven individuals live. 

10 Best Tankless Water Heater For Large Home

1. Stiebel Eltron 232886 Tempra 36 – Best Overall

Stiebel Eltron 232886 Tempra 36 is one of the biggest tankless hot water heaters packed with numerous beautiful traits. It is a costly unit, but its price should not hinder you from enjoying the outstanding attributes this product has to offer. 

It is equipped with advanced flow control that lowers the flow when the water surpasses its capacity to maintain a stable temperature. This energy-efficient product is super-easy to install and replace. 

It comes with a 7-year water leakage warranty and a 3-year warranty for damaged parts. With this heater, you won’t have to install a venting system. It features a trendy and compact design that is the choice of the new generation. 

You can mount it anywhere you want without overthinking. Additionally, it consumes a lower amount of energy and will help you to reduce electricity bills. This best electric tankless water heater for large home is 99% energy-efficient. 

Best of all, it features an intelligent self-modulating technology that allows you to save up to 15 to 20% of energy. There is a digital temperature display that shows you the pre-set temperature. Unlike a tanked storage heater, you will never run out of warm water with Stiebel Eltron 232886. 

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2. Rinnai RUC98iN Indoor Natural Gas

Rinnai RUC98iN is an energy-smart machine that works with natural gas. Its energy consumption rate is 50% lesser than other models. This is because the water travels through the heating coils before reaching the hot water faucets. 

The best tankless water heater for large home is designed to supply on-demand limitless warm water without any delays. Its compact design empowers you to fix it under the sink, in the closet, or any other non-traditional location as it consumes lesser space.  

The traditional units are unsafe to use when the deposited water is unutilized. But this is not the case with Rinnai RUC98iN as it is wholly clean and safe to use at any time. Best of all, there are no hazards of fire with this heater. 

It is equipped with a safety feature that reduces the risk of fire or explosion. Its condensing technology allows for great water heating so that you will obtain hot water quickly. 

The energy factor of this particular device is 0.96. One of the notable features of Rinnai RUC98iN is that it offers you incredible venting options, including PVC and concentric.

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3. Rinnai RL Series HE+ Tankless Hot Water Heater | RL94eP

The majority of homeowners switch from conventional tank storage heater to the best propane tankless water heater for large homes to reduce fuel usage and electricity bills. This powerful unit can meet the high demands of the whole house. 

It is a non-condensing propane-fueled machine that is designed for outdoor installation only. It features the size of a tiny suitcase, permitting uncomplicated deployment. 

Moreover, it is a reliable product packed with lots of smart and contemporary characteristics so that it will be a wise investment for now and for the future. Rinnai RL94eP is prepared with Circ-logic technology, so you can effortlessly create the recirculation patterns as per your schedule. 

You can easily pair it with an external pump to decrease the wait time for warm water. It helps you to utilize less energy and pay less for bills since you use water on-demand. 

Rinnai RL boasts an outstanding water flow rate of 9.4 GPM; it means you can take advantage of it for both commercial and residential applications. 

This model’s most significant advantage is that it arrives with a temperature lock function that lowers the hazard for accidental and unauthorized modifications to the water temperature. Another feature that you will appreciate about it is that it is Wi-Fi ready.  

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4. Rinnai V65EP Tankless Water Heater

Rinnai V65EP is one of the best tankless water heaters for 2 bathroom homes that are highly energy-efficient and resilient. It comes with various integrated features absent in traditional heaters. 

It features a high water flow rate, compact size, eye-catching design, and easy usage, making it a wonderful choice. 

This device has a long service life, and even non-tech savvy people can operate it efficiently. It relies on propane as the fuel to the appliance. Keep in mind that it should be installed outdoors at high altitudes up to 10,200 feet. 

A water flow sensor, a fixed bypass control, and electronic water control are present in it that controls the water flow. Numerous safety devices are incorporated into it that deal with current surges and flame failure proficiently. 

Rinnai V65EP can provide 6.6 GPM of warm water. It has a power output of 150,000 BTU per hour at this flow rate. If we talk about its efficiency, the best tankless water heater for a large home is 82% energy-smart.  

One of the major highlights of this heater is its enhanced scale and leak detection. The scale detection system prevents scale accumulation, and the leak detection system shuts off the device automatically in case of a leakage. 

Furthermore, it has a temperature lock feature that prevents accidental temperature alterations. This eco-friendly machine satisfies the low NOx emission level rules. 

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5. Rinnai V75iP Tankless Hot Water Heater

Rinnai V75iP high capacity tankless water heater is designed for indoor deployment only. It is available at a lower price tag than competitors. If you are on the outlook for high performance and durable appliances from a renowned company, the V75iP could be a great option for you.

It can fulfill the hot water needs of a small or medium-sized house. Its compact size does not demand a lot of storage space. The unit will supply up to 7.5 gallons of hot water in 60 seconds. But bear in mind, to get a high flow rate, groundwater temperature should be warm. 

People who live in colder climates will obtain a much lower flow rate. However, if you live in a warm climate, you will acquire enough warm water for up to five appliances at once. It comes with a Control-R 2.0 mobile app that permits you to schedule heating times throughout the day easily. 

To save money on the fuel, you can also put it on vacation mode. It comes with a unique set of warranties such as ten years warranty for heat exchanger, 5 years warranty for parts, and one year warranty for labor costs. 

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6. EcoSmart ECO 27 Electric Tankless Water Heater

This is one of the top brands that manufacture groundbreaking, high-performance, and life-enhancing tankless water heaters for domestic and commercial properties, enabling them to enjoy every day of life by sharing the warmth of infinite hot water on-demand.  

Ecosmart Eco 27 is the best electric tankless water heater for a large home that provides between 2.7 to 6.5 GPM depending on the groundwater temperature. It is an excellent option for apartments, townhomes, and whole-house applications. It is designed to allow you to decrease energy waste and save money on utility bills. 

Ecosmart 27 is an excellent thing that it does not take a lot of storage space as a tank heater, but it has a sleek, stylish, and wall-mounted design that permits you to free up floor space. It is 90% smaller than traditional water heating devices. 

The machine is equipped with advanced self-modulating technology that only uses the amount of power required to heat the water when you activate the faucet. Its installation process is straightforward and simple, and you won’t have to wait for a long time to get warm water. 

It has a temperature controller in 1-degree increments that enables you to regulate warm water. The activation flow rate of EcoSmart ECO 27 is 0.3 GPM. It is composed of stainless and copper elements for resilience, proficiency, and effortless replacement.  

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7. Noritz NR66ODNG Outdoor Tankless Water Heater

The prime reason to opt for an outdoor high capacity tankless water heater is to eliminate the worry of installing any vents. The Noritz NR66ODNG device is a dependable option for outdoor applications, and it uses both natural gas and propane as a fuel. 

This energy-efficient heater’s heating ranges from 100 to 150 degrees. Its uniform energy factor is around 0.81, and the water flow rate is 6.5 gallons of hot water per minute. Speaking of its installation, this lightweight and small appliance are super easy to install. 

You will have to spend only five minutes on its deployment. Once you hang it, the very next moment, it will start delivering warm water on-demand. Its gas consumption is between 15,000 to 140,000 BTU per hour, presenting an energy-efficiency rating of 84%. 

It needs a lot of gas to operate properly, but the good thing is that it does not waste much of it. In the long-term, it will help you save a considerable amount of money on water and energy bills. 

No technical training is required to operate this product, thanks to its integrated display window that indicates the temperature correctly. The model lets you fine-tune the temperature as per your needs. Due to its compact and tiny size, you can easily carry it around.  

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8. Camplux CA528 5.28 GPM Indoor Tankless

This largest tankless hot water heater is powered by 120 VAC voltage and can produce limitless hot water for years to come. It can produce up to 5.28 gallons of hot water in 60 seconds. 

The residential water heater will provide you with on-demand, perfectly heated water for the whole house usage. It is equipped with an imported PCB frequency conversion intelligent control and double adjustment of air and water. 

Precise temperature control will let you regulate the temperature of the water-based on your specific needs. The rise of the third gear makes it a seamless option for getting continuous warm water at home. To ensure your safety, numerous advanced protection systems are incorporated into it. 

CSA certified tankless machine starts on the water pressure between 7 to 150 PSI. The best propane tankless water heater for large homes emphases on Phosphorus deoxidized copper heat exchanger on high temperature. 

It also has corrosion resistance technology for full combustion. The energy-efficiency rating of Camplux CA528 is 92%. It is designed to resist grade 8 wind speed. A wind pressure sensor detects the outdoor wind force, regulates the fan and flame, and maintains stable combustion. 

The maximum power output of this unit is 150,000 BTU per hour. However, before buying it, keep in mind that it is not recommended for elevation above 600 meters. 

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9. Takagi T-H3-DV-N Condensing Natural Gas Indoor

If natural gas is available in your area instead of propane, then Takagi T-H3-DV-N indoor gas heater will meet all your hot water demands because it is armed with numerous striking attributes. 

This device is designed to produce up to 10 GPM of hot water to obtain enough warm water for all your household needs. Two or more individuals can use the showers or sinks in the residence at once without running out of water. 

It meets the requirements of Ultra-Low NOx and also the standards of having no lead element. The heat exchanger is made of grade copper alloy, so it is ideal for indoor usage. You can install it at an altitude of up to 10,100 feet. 

It is packed with various safety systems, including freeze control, overheating management, and surge protection systems. Moreover, you can attach it to multiple units at the same time. It does not matter if you use a multi-unit controller or not; you can acquire hot water for three or more heaters. 

The steam condensation of this best tankless water heater for large home occurs in the combustion chamber. It is more energy-efficient and cleaner than other heaters. The deployment process of this product is much easier because it arrives with a power direct vent construction. 

Furthermore, the maximum power output of Takagi T-H3-DV-N is 199,000 BTU per hour to generate hot water for four bathrooms in warm weather or three bathrooms in cold weather. 

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10. Noritz NRC71ODNG Outdoor Condensing Tankless Water Heater

This fully condensing best tankless water heater for 2 bathroom homes is equipped with an advanced heat exchanger and a built-in controller. It features an exceptional efficiency factor that makes it a fantastic product. 

Moreover, it flaunts a high flow rate of 7.1 gallons of hot water in one minute. There is an LED indicator that gives you accurate information about the temperature and other details. When you use the device for a prolonged time, the indicator will inform you about it. 

It boasts an eye-catching and lightweight design, so it will be easier for you to use it. It is 40 pounds in weight that make the deployment uncomplicated and straightforward. The power output of Noritz NRC71ODNG is 140,000 BTU per hour, so it is the fastest performing appliance. 

In a colder climate, it only takes 2 minutes to produce perfectly hot water. It is made for outdoor usage only and is ideal for condominiums, townhouses, and apartments with 2 to 3 showers. This modern and cost-effective model allows you to upgrade your lifestyle. 

Best of all, it does not require an outdoor venting system, so it does not cost much. It vaunts an impressive twelve-year warranty for heat exchanger tubing, a one-year labor warranty, and a five-year warranty on parts. 

NRC71ODNG Natural Gas outdoor is equipped with direct ignition, a safety lockout system, and a modulating burner. All of these features automatically fine-tune the burner levels accordingly. 

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Things To Consider Before Buying The Best Tankless Water Heater For Large Home

Flow Rate

With the tanked heater, the biggest worry is running out of warm water when the container runs empty. However, when you utilize the high capacity tankless water heater, the primary trouble is how quickly and seamlessly it can heat cold water. 

They can deliver a never-ending supply of water, but what generally varies is the flow rate. Before purchasing an appliance, make sure to check the flow rate specifications for the particular product you have selected. 

Always opt for a model with a higher flow rate because it will efficiently meet a large house’s needs. You should determine your needs first to ensure you are obtaining a heater with accurate capacity. 

Energy Savings

According to research, homeowners burn a heavy amount on water heating. That’s why; it is critical to look for a device that converses power as much as possible. To determine its energy-efficiency, you can check how efficiently it transfers heat energy from the source to the water. 

It is a reality that tankless systems are more energy-smart than the traditional ones. They use energy only when you activate the faucet to get the warm water. 

In addition to that, sediment builds up in the tank device that lowers the heater’s efficiency. On the other hand, the biggest tankless hot water heater helps you save up to 50% of energy expenses.  

Power Source

The best tankless water heater for 2 bathroom homes heat cold water that flows through a heating component powered by electricity or natural gas. Therefore, it is essential to determine which fuel type is available in your area.  

• Electric Heaters

They are costly than gas units, but they are energy-efficient and don’t produce harmful gases. Best of all, they don’t need any vents as well. Many electric devices feature an energy-efficiency rate of 98%. 

They are more prevalent in folks who are uncomfortable using propane or natural gas in their properties because of safety concerns. 

• Gas Heaters

They are cheaper and energy-smart, but they need venting systems and also produce harmful gases. They are an excellent option for colder climates because they have a higher water flow rate than electric appliances. 

To reap full benefits out of a gas machine, make sure to pick a reputed brand and appropriate model according to your needs. 

Size

While selecting the best electric tankless water heater for large home, don’t forget to consider the system’s size. If you have a larger family, you need a bigger heater to obtain a higher flow rate. 

Also, determine the temperature of the incoming water and preferred temperature. If you live in a colder area, you should buy a larger size heater with a higher flow rate.  

Condensing And Non-Condensing Heaters

Condensing

In these units, gases that are created go through a process that results in condensation to generate cooler gases. This cooling process releases cooler gas after taking the heat away. 

These devices are more efficient than non-condensing ones. The great news is that they don’t rely on expensive ventilation system because the gases are cooler. The temperature of exhaust gas is around 100°Fehernheit.

Non-Condensing

The non-condensing best propane tankless water heater for large homes cools its by-product gas outside the unit. The temperature of the produced gases is around 300°Feherinheit. 

They work by heating water directly rather than depositing it. These instant heaters also work on-demand and are typically deployed near the point of use fixtures such as sink taps or shower. 

Frequently Asked Questions