The Best Tankless Gas Water Heater For Large Homes In 2023

Holly Becker By, Holly Becker
Updated
Rinnai V94iN Non-Condensing Natural Gas Tankless Water Heater
Image credit: Amazon.com

Summary

1. Best Of The Best: Rinnai V94iN Non-Condensing Natural Gas Tankless Water Heater

With the Rinnai V94iN, you'll never run out of hot water. Installs easily and quickly in any room, this natural gas tankless water heater is perfect for small spaces because it doesn't require a storage tank. The smart, durable design includes a special air intake to prevent condensation build-up and corrosion, so you get maximum power with minimal maintenance. Read Review

2. Best For the Price: Camplux Tankless Water Heater Natural Gas

Camplux is the perfect solution for a tankless water heater. It's designed for on-demand hot water and instant constant hot water with an easy installation, modern design, and magnificent features. With 6-in-1 protection you can be assured of the safety of your family and home. Read Review

3. Best Performance: Rinnai RL94eN Non-Condensing Natural Gas Tankless Water Heater

Rinnai RL94eN is a tankless hot water heater designed for use in commercial applications. It features an original design with no moving parts and never run out of hot water. The durable, professional installation recommended tankless water heater from Rinnai offers a smart, durable design perfect for any home or business. Read Review

4. Best Adjustable: Complex Tankless Water Heater Natural Gas

With the Complex Tankless Water Heater, you can be sure that your water supply will always be clean and safe. This powerful indoor installation device provides instant hot water for any room in your home or business. The sleek design is easy to install, and the 6-in-1 protection ensures safety with a built-in shut-off valve in case of emergencies. Read Review

5. Best Portable: Rinnai RU199iN Condensing Tankless Hot Water Heater Gas

The Rinnai RU199iN Condensing Tankless Hot Water Heater Gas is a cost-effective, efficient, and energy-saving alternative to traditional tank hot water heaters. Cold water enters the heater at the bottom where it is drawn up vaporizing throughout the unit via an internal pump and then heated by an internal coil and transferred throughout the unit to provide instantaneous heating. This ensures optimal pressure and flow for any size of application. Read Review

The demand for energy-efficient homes is becoming more and more prevalent. Therefore, many homeowners are looking to implement energy-saving solutions in their large homes. A gas water heater is one of the easiest ways to save money.

If your home has a lot of space, you may have considered installing a tankless gas water heater instead of a standard model. However, you might not know what type of tankless water heater is right for your home or how much they cost. This guide will help you find the best tankless gas water heater for large homes.

We think the best tankless gas water heater for large homes that is available now is Rinnai V94iN Non-Condensing Natural Gas Tankless Water Heater. We also provide you with Camplux Tankless Water Heater Natural Gas model that you may consider if the top product is not your choice. And bellow are the helpful buyer's guide to assist you in making your decision.

Our Top Picks

  • Original Design: Tankless hot water heater only heats when necessary to conserve energy; For the latest in non-condensing technology and a cleaner layout that speeds up service and installation, check out our new RE199iN model
  • Smart, Durable Design: Enhanced scale detection helps prevent serious, long-term damage to unit; Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 9.8 GPM (6 fixtures at once)
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
TOP Choice #2 Camplux Tankless Water Heater Natural Gas
Our Score:
9.5
CAMPLUX ENJOY OUTDOOR LIFE
  • 6-In-1 Protection Ensure Your Safety- Dry combustion,flame failure device, anti-freezing protection, over heating protection to ensure your safety. Fully automatic temperature controls with an energy saving mode and child lock technology.
  • Note- The standby electric power of is 2W, working electric power is 42W. Natural gas input pressure is 0.25 psi. There is a pressure relief valve at the water inlet of water heater. It is necessary to manually unscrew the pressure relief valve to drain the water inside the machine in time after using the machine to avoid freezing and blew up when the temperature is lower than 32 ° F in winter.
  • Convenient, Easy Installation -The tankless water heater uses standard 1/2" BSP water fitting and gas inlet. The water heater comes with1/2 " BSP female to 1/2" NPT male gas connector adapter then you want hook this water heater to natural gas pipe directly.It also comes with 2.3" horizontal vent pipe,ensures efficient power ventilation. You can take Camplux customized wall thimble-WT236 for perfect indoor use.
  • Modern Design,Easy Operation -Trendy and modern design with unique white glassy front panel,easy to control the water temperature with LED touchscreen (Fahrenheit and Celsius switch optional).The compact size on demand water heater saves more space than traditional tanks.
  • Outstanding Features- The Camplux tankless gas water heater comes with oxgen-free copper heat exchanger and v-type stainless steel burner,high heating efficiency up to 89.98 %; 90°wind isolation design, this tankless natural gas water heater can anti backflow wind in high floors, the S/S 2.36 ” vent pipe exhaust harmful gases quickly.
  • 3.18 GPM Instant Constant Water Heater -Camplux 3.18 GPM tankless water heater natural gas delivers 3.18 gallons per minute of on-demand endless hot water ensures constant comfortable instant hot water for 2-3 persons whole house. 3.18-GPM heater is activated by water flow rather than water pressure; Minimum activation water capacity rate: 0.65 GPM-4.8 GPM; Maximum input rating: 82,000 BTUs; Water connection location/size: Bottom/0.5-inch NPT.
  • Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 9.8 GPM (6 fixtures at once)
  • Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and installation, check out our new RE180eN model
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
4 Complex Tankless Water Heater Natural Gas
Our Score:
9.2
CAMPLUX ENJOY OUTDOOR LIFE
  • Indoor Installation. This natural gas tankless water heater is applied for home use, suitale for 1 shower and 1 dishwasher or 1 landury room.
  • 2.64 GPM Instant Water Heater. Camplux water heater delivers 2.64 GPM hot water.You can enjoy unlimited hot water flow throughout the house, compact, durable, and easy to install, professional installation recommended.
  • Easy to Install. The tankless water heater uses standard 1/2" BSP water fitting and gas inlet. The water heater comes with1/2 " BSP female to 1/2" NPT male gas connector adapter then you want hook this water heater to natural gas pipe directly.
  • 6-In-1 Protection Ensures Safety. Dry combustion,flame failure device, anti-freezing protection, over heating protection to ensure your safety. Fully automatic temperature controls with an energy saving mode and child lock technology.
  • Optimal Features.Tankless hot water heater comes with oxgen-free copper heat exchanger and v-type stainless steel burner,high heating efficiency up to 89.98 %; 90°wind isolation design, this tankless natural gas water heater can anti backflow wind in high floors.
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively. Wifi monitoring.
  • Optimal Water Pressure: Up to 11 GPM hot water flow rate for a powerful, constant stream
  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Instant Heating: Equipped with Circ-Logic - Pair with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Recirculation pump ready kit ready
  • Exclusive Water Savings technology conserving up to 1, 100 gallons per year
  • 157, 000 BTU (gas consumed per hour)
  • For use outdoors with freeze protection up to -30 degrees
  • Fuel Type: Natural Gas
  • Exclusive Hot Start Programming minimizes cold water burst by staying in ready-fire state
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively. Wifi monitoring.
  • Energy and Space Efficient: Space-saving design conserves energy as it heats only when necessary
  • Instant Heating: ThermaCirc360 technology provides faster hot water with a built-in recirculation pump, timer and thermal bypass valve - ideal for homes without a dedicated return line
  • Optimal Water Pressure: Up to 11 GPM hot water flow rate for a powerful, constant stream
  • Endless Hot Water: Enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended
  • Tankless Gas Water Heaters are cost saving and energy efficient
  • Continuous Hot Water – never run out of hot water, even with back-to-back showers
  • Reduces Energy Consumption - Automatically adjusts the amount of energy required to heat the water you need
  • Easy, Convenient Control –Easily adjust water temperature ranging from 85˚F–140˚F
  • For indoor use only
  • This heater can be vented horizontally or vertically using 2" Solid Core Schedule 40 PVC/CPVC
  • Condensing Technology - The EZ Ultra HE uses exhaust gas to preheat incoming water for added efficiency.
  • Back-draft prevention device and stainless steel horizontal vent pipe are included.
  • Capacity Up to 3.4 GPM @ 45F Rise In Ambient Temperature
  • FREE SHIPPING
10 Camplux Tankless Natural Gas Water Heater
Our Score:
8.0
CAMPLUX ENJOY OUTDOOR LIFE
  • Direct-Current Frequency Conversion Fan-The gas water heater comes with a direct-current frequency conversion fan. The water heater can resist level 8 strong wind and you no need to worry about the water pressure in high floors.
  • S/S Burner, Thermal Efficiency Up to 89.98%-The tankless gas water heater comes with CSA certified balanced combustion design, v-type stainless steel burner,high heating efficiency up to 89.98 %. PCB frequency conversion and temperature intelligent control, heating without waiting. This residential constant model saves time, money and energy while producing safe, endless hot water for whole home.
  • 6.86 GPM Instant Constant Hot Water- Camplux 26 litre tankless water heater is powered by 120 VAC voltage, features imported PCB with precise temperature control, never blow hot and cold in turn, making it perfect for on-demand hot shower at home. The water heater produce a quick endless hot shower for whole house.
  • Convenient, Easy Installation-6.86 GPM hot water is activated by water flow rather than water pressure,automatically activates on water pressure between 7.0-150PSI. Minimum activation rate: 0.65 GPM; Maximum input rating: 180,000 BTUs; Gas Water connection location/size: Bottom/ NPT 3/4″.
  • Considerate Anti-Scalding Protection-The tankless water heater equipped with anti-scalding function to avoid the problem of excessively high setting temperature (causing burns ) caused by children's wrong operation.Therefore, it is impossible to set a temperature exceeding 122 ℉ under normal working conditions. The water valve needs to be closed to make the water heater in standby status before you set the temperature above 122 ℉.
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What to Look For in a best tankless gas water heater for large homes?

Sometimes, purchasing a product can draw some difficulties for shoppers, and that's why you shouldn't waste your time on unreliable sources of information. A variety of variables impact the best tankless gas water heater for large homes, along with all of the ones listed below. The formative assessment varies depending on the types and functions of the product. 

We will give you some purchase guides to help you with your selection proc in the following sectors. Continue reading to learn about what you should look for when looking for the best tankless gas water heater for large homes: 

Brass Vs. Plastic Drain Valves

A tank water heater has a drain valve located at the bottom that allows for the proper drainage of the tank. The valves can be used with standard garden hoses and made from brass or polyvinyl chloride (PVC). A brass drain valve is better than using plastic for hot water heaters, as brass is more resilient than plastic.

Tank Capacity

You should make sure your tank heater has enough hot water storage to provide heat for your entire family. Although tank heaters are capable of heating water at multiple locations simultaneously, they will require more time to heat the water. This could lead to unexpectedly cold showers.

Venting Needs

Electric water heaters do not require venting, so they can be placed in any place in your home. When they heat up, gas hot water heaters emit carbon monoxide and other harmful gases. These heaters use a ventilation system made up of pipes and conduits that removes these byproducts. Gas heaters require venting, take up more space, and are less suitable for homes than electric water heaters.

Digital Displays

Modern water heaters have digital controls, which allow homeowners to set up the heater to turn off when they are away from home. Although a digital display can increase the initial price of the heater, it also increases the heat efficiency, which ultimately saves money.

Anti-Scale Devices

Some companies advertise that they can reduce mineral scale buildup by swirling water. Although scale may reduce the heater's life expectancy, it doesn't mean you have to spend a lot on fancy options. Look for one that comes with a 122023 warranty. This usually includes an element of a greater or lesser thickness.

Efficiency Rating

Efficiency ratings are a measure of how efficient water heaters actually heat water. An efficiency rating of.70 for hot water heaters means that 70% of energy used by them heat water.
The difference between electricity and gas rates means that this rating doesn't give a good indication of the cost you could expect to pay for the unit. A gas heater with a lower efficiency rating will be more efficient than one that uses electricity. However, gas heaters are mucher than electric ones.
Because they don't have to run constantly to heat water, tankless heaters are significantlyer than storage tanks heaters. A tankless water heater can cut down on your energy bills by up to 40% depending on how much hot water you use. To determine the impact on your budget, it is better to calculate the annual operating cost for the hot water heater.

Gas Or Electric

There are many factors that influence the choice of electric or gas-powered water heaters. These include local utility costs and personal preferences. People who want to save money upfront and those who don't have natural gas in their homes prefer electric water heaters. Gas heaters can be more costly upfront, but they will save you many hundreds of dollars per year depending on the energy cost in your region.

Tankless Or Tank

A tank water heater stores a set amount of hot water and is ready to be sent to several appliances simultaneously. The tankless heaters heat the water quickly and require less space than water heaters with tanks. One unit might not heat enough water for multiple fixtures simultaneously, so it is possible to purchase multiple water heaters.

Space

A lowboy, or shorter water heater might be the best option if you don't have a lot to heat. They are smaller than average and can be used in small homes. You could also consider mini-tank or tankless water heaters. Although gas water heaters are bulky and heavy, it's possible to get smaller models. The size of electric water heaters is generally smaller. If you have limited space, tankless electric water heaters will be the most suitable option.

FAQs

How Do You Drain A Water Heater?

First, drain the hot water heater by flushing it with water at full pressure. After connecting the drain line, open the drain valve and close it again. The valve will dislodge any sediment, allowing the system to drain faster.
Then, disconnect your water heater from either the electric or gas power supply and shut down the main water supply. Next, disconnect the drain hose from the quick flush and open the drain valve. Once you let air in the tank, water will not flow out. You will need to remove the hot water pipe from the top of the water heater, and then move the pipe to the side. You will see the tank begin to drain.

What Is A Water Heater?

A boiler is often confused with a water heater. What is the difference between a boiler and a water heater? A water heater heats water to be used for showering, cooking, cleaning, or other purposes. The water heater heats cold water coming from the water supply pipe. It then gives you hot water ready to use for washing your clothes or running a faucet. Water heaters use water that's suitable for cleaning and cooking (potable). A boiler, on the other hand is designed to heat your home and heat water from the taps.

What Are The Signs Your Hot Water Heater Is Going Out?

A failing water heater can be identified by a series of telltale symptoms, such as banging sounds inside the tank and a decrease in temperature.

Can You Still Shower If Your Water Heater Is Leaking?

You can still take a hot shower even if your water heater is leaking. You can shower even if the leak becomes severe. It will just mean that you won't get hot water.

How Long Does A Water Heater Last?

Although water heaters come with varying lifespan expectations, many can last for between 8-12 years. Some water heaters can last up to 20 years. Your water quality can make a difference in how long your heater will last. Over time, corrosion can occur from heavy minerals or sediment.
Depending on which model you select, the manufacturer may offer different warranty terms. The most common warranty period is usually between 6 and 9 years.

How Do Water Heaters Work?

A tank-style water heater uses a dip tube that has an outlet in the bottom to heat the cold water. The tank's temperature is monitored by an internal thermostat which activates either a heating element, or a burner that warms water to the desired temperature.
Dual heating elements are used in electric water heaters to heat the water. The bottom heating element heats the coldest water faster, while the top one warms the water if it becomes too hot.
A pilot light, or electronic ignition system for gas water heaters ignites the gas that is flowing to a burner. Before shutting off, the burner heats water in the tank until it reaches a desired temperature. The exhaust is then vented outside.
Water heaters that are tankless don't keep water. They heat the water by using either electric or gas heating elements. The temperature of the hot water is a factor in how fast it flows, however most units are capable of providing hot water at a flow rate between 2 and 7 GPM.

Gas Vs Electric Water Heaters: Which Is Right For You?

It's not cheap to install a water heater in your house. This is why it's important that you take some time thinking about how to charge your appliances. First, electric heaters offer the most sustainable option for the environment. If you choose one, it will be a better choice for your planet. Although electric water heaters work better, the price of electricity is higher than that of traditional gas options. You can still use your gas heater even if there is no power, so you have less to worry about during a crisis.

Can Water Heaters Explode?

Electric and gas hot water heaters are susceptible to explosions. Explosions are rare, but can be caused by increased pressure in the heater, poor installation or maintenance, failure to set the temperature and relief valve (T & P), gas heaters, flammable liquids, or gas leaks.

How Often Should I Replace My Water Heater?

According to professionals, your water heater should be replaced every 10 years. A water heater cannot be guaranteed for this long. It is possible that your water heater will need to be replaced sooner than expected.

What Is The Best Compact Water Heater For Saving Space?

Mini-tank or tankless water heaters are compact and light, which makes them great for small homes that have less space.

Generally, new information is continuously included into of best tankless gas water heater for large homes. Visit our sites for revisions and improvements regularly.

You now have a far better knowledge of how to purchase the best tankless gas water heater for large homes on the market. Hopefully, we've supplied you with enough information to help you make an informed decision. We'll see you in the following article.


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About Holly Becker

Holly Becker
Holly Becker is a commerce editor for Sanford ArtEdventures. She has years of experience testing products and writing about them, with the aim of helping people to improve their homes. Holly loves anything that makes her house look better, and she's excited to share her findings with others who want to do the same.

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