Tankless Water Heaters - Top 5 Gas Water Heaters with tank-less technology
Zeljko Mitrovic
November 20, 2009
Tankless water heaters are also called on demand and instant hot water heaters due to its tank-less design and on demand water heating technology.
The main advantage of these instantaneous water heaters vs. storage tank type models, is its on demand, continuous hot water flow and endless supply, less energy consumption (up to 30-40% when comparing it to the conventional water tank heaters), recyclable replacement parts, money savings and worry-free service.
The size of the tankless water heater you need depends on demand, the size of your family and home. If your home is large in size, by using a multi-system set-up you can link several water heaters into one system.
Majority of these on demand models are whole house with higher GPM flow rate capacity while supplying more than one application at a time, while smaller units are mainly for point of use application.
There are also some manufacturers that offer economic residential and commercial grade combi boilers or hot water heaters to be used for space heating and water heating at the same time.
List of Top 5 Tankless Water Heaters
Here is the list of the best residential tankless water heaters that are EnergyStar qualified, per our selection, detail reviews, and based on the latest technology and engineering applied, features and benefits it offers:
Noritz
Rinnai
Bosch
Paloma
Rheem
1. Noritz tankless water heaters are using the most superior and innovative technology to provide hot water with 83-94% thermal efficiency. All Noritz water heaters are designed to meet strict EnergyStar requirements and low greenhouse gases, energy and space conservation.
Noritz water heaters are designed to be safe and reliable, thanks to the electronic system called Advanced Q Function.
Dual flame burner is using the latest combustion technology that is electronically controlled providing hot water with very low temperature fluctuation, maximizing the heat output and maintaining high efficiency.
Commercial grade heat exchanger and Turbo Flow are also part of this great engineering...
2. Rinnai is another high class tankless water heaters manufacturer from Japan. Rinnai tankless water heaters are "green" with reduced energy use, water consumption, NOx and CO2 emission. With an average longevity of 20 years and high percent of replaceable and recyclable components, less waste goes on landfills.
In "Most Popular Products" builder's magazine, Rinnai water heaters have been voted #1 of all water heating system manufacturers.
3. Bosch tankless water heater models are German engineering with two popular brand names; Aquastar for gas tankless and Powerstar for electrical water heaters and for whole house and point of use applications.
This German technology provides life expectancy of an average 20 years and great number of replaceable parts. Its main advantages are its high efficiency Ceramat Burner, real-time diagnostic for troubleshooting and failure codes for easy diagnostics and repair.
The most interesting model is 1600 because of its uniqueness in hydro-generated ignition, with an energy independent technology. It uses a small turbine wheel to create enough electricity for lighting the burner.
4. Paloma is the third Japanese manufacturer of tankless water heaters on our list. It is among top five brands because of its performance and efficiency, available features and reliability.
Paloma water heaters are using an ICAD system, Incomplete Combustion Avoidance Device to monitor and optimize gas combustion. It is also used to prevent dangerous carbon monoxide production by shutting the water heater down.
Overheat Limiter Wrap or fire protection sensor is used to provide protection against risk of fire, by surrounding the combustion chamber with a plastic film and detecting overheating around heat exchanger.
Flame Failure Protection and Anti-boil Protector are other two safety elements that are designed and implemented in Paloma water heaters for the unit and your protection.
5. Rheem tankless water heaters are award winning water heating systems, and certified by GAMA, an independent testing agency for government standards and certifications. Rheem models are equipped with Rheem Exclusive Guardian SBT a sensing burner technology and the Exclusive Guardian OFW, overheat film wrap, both of them designed for safety and better performance.
With an EZ-Link cable two of the Rheem unit can be connected into one, or up to 20 units using the multi-system.
For more information about tankless technology and available brands look for the reviews about tankless water heaters.
How to select the best water heating system, details about popular water heaters and its parts, advantages, common problems, troubleshooting and more you can find in hot water heaters reviews.
The main advantage of these instantaneous water heaters vs. storage tank type models, is its on demand, continuous hot water flow and endless supply, less energy consumption (up to 30-40% when comparing it to the conventional water tank heaters), recyclable replacement parts, money savings and worry-free service.
The size of the tankless water heater you need depends on demand, the size of your family and home. If your home is large in size, by using a multi-system set-up you can link several water heaters into one system.
Majority of these on demand models are whole house with higher GPM flow rate capacity while supplying more than one application at a time, while smaller units are mainly for point of use application.
There are also some manufacturers that offer economic residential and commercial grade combi boilers or hot water heaters to be used for space heating and water heating at the same time.
List of Top 5 Tankless Water Heaters
Here is the list of the best residential tankless water heaters that are EnergyStar qualified, per our selection, detail reviews, and based on the latest technology and engineering applied, features and benefits it offers:
Noritz
Rinnai
Bosch
Paloma
Rheem
1. Noritz tankless water heaters are using the most superior and innovative technology to provide hot water with 83-94% thermal efficiency. All Noritz water heaters are designed to meet strict EnergyStar requirements and low greenhouse gases, energy and space conservation.
Noritz water heaters are designed to be safe and reliable, thanks to the electronic system called Advanced Q Function.
Dual flame burner is using the latest combustion technology that is electronically controlled providing hot water with very low temperature fluctuation, maximizing the heat output and maintaining high efficiency.
Commercial grade heat exchanger and Turbo Flow are also part of this great engineering...
2. Rinnai is another high class tankless water heaters manufacturer from Japan. Rinnai tankless water heaters are "green" with reduced energy use, water consumption, NOx and CO2 emission. With an average longevity of 20 years and high percent of replaceable and recyclable components, less waste goes on landfills.
In "Most Popular Products" builder's magazine, Rinnai water heaters have been voted #1 of all water heating system manufacturers.
3. Bosch tankless water heater models are German engineering with two popular brand names; Aquastar for gas tankless and Powerstar for electrical water heaters and for whole house and point of use applications.
This German technology provides life expectancy of an average 20 years and great number of replaceable parts. Its main advantages are its high efficiency Ceramat Burner, real-time diagnostic for troubleshooting and failure codes for easy diagnostics and repair.
The most interesting model is 1600 because of its uniqueness in hydro-generated ignition, with an energy independent technology. It uses a small turbine wheel to create enough electricity for lighting the burner.
4. Paloma is the third Japanese manufacturer of tankless water heaters on our list. It is among top five brands because of its performance and efficiency, available features and reliability.
Paloma water heaters are using an ICAD system, Incomplete Combustion Avoidance Device to monitor and optimize gas combustion. It is also used to prevent dangerous carbon monoxide production by shutting the water heater down.
Overheat Limiter Wrap or fire protection sensor is used to provide protection against risk of fire, by surrounding the combustion chamber with a plastic film and detecting overheating around heat exchanger.
Flame Failure Protection and Anti-boil Protector are other two safety elements that are designed and implemented in Paloma water heaters for the unit and your protection.
5. Rheem tankless water heaters are award winning water heating systems, and certified by GAMA, an independent testing agency for government standards and certifications. Rheem models are equipped with Rheem Exclusive Guardian SBT a sensing burner technology and the Exclusive Guardian OFW, overheat film wrap, both of them designed for safety and better performance.
With an EZ-Link cable two of the Rheem unit can be connected into one, or up to 20 units using the multi-system.
For more information about tankless technology and available brands look for the reviews about tankless water heaters.
How to select the best water heating system, details about popular water heaters and its parts, advantages, common problems, troubleshooting and more you can find in hot water heaters reviews.
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