The 23 best instant water heater brands
Rinnai, Rheem and Navien lead our ranking of 23 instant water heater brands. Compare what each brand makes, visit its official site, or shop it online.
Instant Water Heater brands, ranked
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Navien
Korean-made condensing tankless units with built-in recirculation pumps, vented through PVC, often paired with whole-home radiant loops.
Top products: NHW700-180SU-NG· NPE-240S2
Website: navieninc.com |Brands like Navien
Popularity 8.1/10
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4
Eemax
Under-sink electric point-of-use heaters for sinks and showers, with a broad product line.
Top products: HomeAdvantage II· SPEX2412· SP3512
Website: eemax.com |Brands like Eemax
Popularity 6.1/10
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5
CAMPLUX
Propane and electric portable heaters aimed at camping, RVs and off-grid showers.
Top products: Nano 3 Pro
Website: camplux.com |Brands like CAMPLUX
Popularity 5.7/10
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6
Noritz
Gas tankless units backed by a strong installer network, popular in residential and commercial kitchens.
Website: noritz.com |Brands like Noritz
Popularity 5.2/10
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7
Bosch
German-engineered tankless units with compact cabinets, often chosen for mid-sized homes.
Website: bosch.us |Brands like Bosch
Popularity 5.1/10
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8
Chronomite
Hand-washing sink heaters and eye-wash stations, plus whole-home electric units.
Website: chronomite.com |Brands like Chronomite
Popularity 4.8/10
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9
STIEBEL ELTRON
Stiebel Eltron's electric units are often installed under sinks and in showers where compact size matters.
Website: stiebel-eltron-usa.com |Brands like STIEBEL ELTRON
Popularity 4.5/10
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10
Westinghouse
Westinghouse has it all, from kitchen appliances to lighting. Power your house with their electronic equipment that fits your lifestyle. Take your home a step ahead towards modern living as you explore air purifiers, cookers, steamers, and fryers. Match your...
Website: westinghouse.com |Brands like Westinghouse
Popularity 4.3/10
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11
A. O. Smith
Tank and tankless gas and electric heaters with a large commercial footprint and long warranties.
Website: aosmith.com |Brands like A. O. Smith
Popularity 3.9/10
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12
VEVOR
VEVOR's budget electric units often ship with LED displays and simple push-button temperature controls.
Top products: Tankless Electric Water Heater 8 kW
Website: vevor.com |Brands like VEVOR
Popularity 3.7/10
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13
Eccotemp
Lightweight propane and electric tankless units for RVs, cabins and outdoor washing.
Website: eccotemp.com |Brands like Eccotemp
Popularity 3.4/10
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14
GASLAND
Portable propane tankless heaters sold alongside cooktops and outdoor heating gear.
Website: gaslandchef.com |Brands like GASLAND
Popularity 2.6/10
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15
Takagi
Compact gas tankless and boiler units with no standby losses, suited to tight spaces.
Popularity 2.4/10
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16
Marey
Marey is a brand dedicated to the creation of innovative tankless water heaters. Their products are designed with sustainability and customer demands in mind. They offer water solutions for various outdoor, indoor, and recreational applications. It has grown and expanded...
Top products: Marey Home Compact Tankless Shower Water Heater
Website: marey.com |Brands like Marey
Popularity 2.0/10
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17
Eztankless
EZ Tankless - Portable and Whole Home Tankless Water Heaters
Website: eztankless.com |Brands like Eztankless
Popularity 1.8/10
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18
Thermoflow
Thermomate is known for the particular cooking types of equipment that they make. They have a mission to produce green energy products for everyone to use. They make cooktops, water heaters, and wall ovens. Now you can bring to life...
Website: thermoflowus.com |Brands like Thermoflow
Popularity 1.7/10
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19
Richmond
Richmond Auto Upholstery supplies leather seat covers and steering wheel covers for vehicles. The company states that its replacement covers are built in the USA to match factory interiors. It has been operating for several decades and focuses on OEM-style...
Popularity 1.7/10
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20
Bradford White
Bradford White is an American-based organization with creation offices in the United States. The things are fabricated in the United States utilizing the best natural substances and parts from one side of the planet to the other to convey the...
Website: bradfordwhite.com |Brands like Bradford White
Popularity 1.7/10
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21
GE
GE Lighting has been leading the lighting technology industry for over 130 years. Its mission is to provide customers with a first-class smart home experience. To do so, it has created novel lighting products designed to improve one's lifestyle and...
Website: gelighting.com |Brands like GE
Popularity 1.4/10
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22
Triangle Tube
Bathing in winters can be harsh, especially if living in a naturally cold place; Triangle Tube is a brand that strives to make it easier to take a hot shower even in chilling weather. The brand manufactures and sells water...
Website: triangletube.com |Brands like Triangle Tube
Popularity 1.3/10
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23
Ariston
Ariston is the pioneer and market leader in the field of water heaters. It offers the best quality, effective, and long-lasting solutions to address your domestic hot water needs. Ariston provides various products to meet every family's demands, from instantaneous...
Website: ariston.com |Brands like Ariston
Popularity 1.2/10
Official websites and social accounts
| Brand | Website | X / Twitter | YouTube | ||
|---|---|---|---|---|---|
| Rinnai | rinnai.us | /rinnaiamerica | – | @Rinnai | rinnaivideos |
| Rheem | rheem.com | /rheem | rheem | @rheem_water | – |
| Navien | navieninc.com | /Navien.Inc | navieninc | @NavienInc | – |
| Eemax | eemax.com | /EemaxInc | eemaxinc | @Eemaxinc | Eemax1 |
| CAMPLUX | camplux.com | /CampluxLife | campluxlife | @campluxlife | Camplux |
| Noritz | noritz.com | /123373666818 | noritzamerica | @NoritzAmerica | noritzamerica |
| Bosch | bosch.us | – | – | – | – |
| Chronomite | chronomite.com | – | – | – | – |
| STIEBEL ELTRON | stiebel-eltron-usa.com | /StiebelEltronUSA | – | @StiebelUSA | – |
| Westinghouse | westinghouse.com | /WestinghouseHome | westinghouse_home | @@CBSFantasy | – |
Instant Water Heater Buying Guide
Water heaters are essential appliances for any household. They provide warm water for various purposes like bathing, washing dishes and clothes, and cleaning. A traditional water heater stores gallons of hot water in a tank and heats it continuously to maintain a constant temperature. However, this method has certain drawbacks, such as high energy consumption and limited hot water supply. To overcome these issues, instant water heaters have become increasingly popular in recent times. As the name suggests, instant water heaters heat water on demand without storing it in a tank. This technology saves energy and provides hot water instantly, making it ideal for small households and apartments. In this article, we will discuss the factors to consider while purchasing an instant water heater.
Types of Instant Water Heaters
Instant water heaters can be classified into two types - electric and gas-powered. Electric instant water heaters use heating elements to heat water. They are easy to install and do not require any ventilation or gas connection. However, they may have high power consumption, and their performance may vary depending on the incoming water temperature and flow rate.
Gas-powered instant water heaters use propane or natural gas to heat water. They are more energy-efficient than electric heaters and can provide hot water even during power outages. They also have a longer lifespan and can support higher flow rates. However, they require a gas connection and proper ventilation to operate safely. Additionally, they may have a higher initial cost compared to electric heaters.
Features to Consider
Before purchasing an instant water heater, it is important to consider the following features:
Flow Rate
Flow rate is the amount of water that the heater can provide per minute. It is measured in gallons per minute (GPM). The flow rate required depends on the number of fixtures and appliances that need hot water simultaneously. For example, a showerhead may have a flow rate of 2 GPM, whereas a dishwasher may require 1.5 GPM. It is best to choose a water heater with a flow rate that can support the high demand of hot water.
Temperature Rise
Temperature rise is the difference between the incoming water temperature and the desired output temperature. For example, if the incoming water temperature is 50°F and the desired output temperature is 120°F, the temperature rise is 70°F. It is important to check the temperature rise of the water heater to ensure that it can provide the required hot water temperature.
Size
The size of the water heater depends on the number of people using hot water and household water usage habits. A small water heater may suffice for a single-person household, whereas a large water heater may be required for a large family. It is best to choose a water heater size that can meet the hot water demands of the household.
Energy Efficiency
Instant water heaters are known for their energy efficiency compared to traditional water heaters. Look for a water heater with a high Energy Factor (EF) rating, which is calculated by dividing the usable hot water output by the energy input. A higher EF rating indicates higher energy efficiency and lower operating costs.
Flow Control Technology
Flow control technology regulates the flow of water to maintain a constant output temperature. It ensures that the hot water does not fluctuate in temperature when another fixture or appliance is turned on. Look for a water heater with advanced flow control technology for a more consistent and comfortable showering experience.
Warranty
A warranty is an important factor to consider while purchasing a water heater. It provides protection against any defects or malfunctions in the water heater. Look for a water heater with a warranty period of 5-10 years, depending on the brand and model.
Installation and Maintenance
Instant water heaters are relatively easy to install and maintain. However, it is essential to follow the manufacturer's instructions and safety precautions while installing the water heater. It is recommended to hire a professional plumber for installation and any repairs. Regular maintenance is also required to ensure the efficient running of the water heater. This includes periodic cleaning of the heating elements, checking for leaks and proper ventilation, and ensuring that the water pressure is within the manufacturer's recommended range.
Conclusion
Instant water heaters are a great choice for households that require hot water on demand. They are energy-efficient, space-saving, and provide hot water instantly. When purchasing an instant water heater, consider the flow rate, temperature rise, size, energy efficiency, flow control technology, and warranty. It is also essential to follow the manufacturer's instructions while installing and maintaining the water heater. Choose a reputable brand with a proven track record for reliable and durable products. With the right instant water heater, you can enjoy hot water anytime without the hassle of traditional water heaters.
