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Related PostsHow Condensing Tankless Water Heaters WorkUltra high-efficiency tankless water heaters—also known as condensing tankless—use two heat exchangers to supply endless hot water when you turn on a faucet. They use less energy (and money) than traditional water heaters because they don't need to reheat the water over and over.
What’s the difference between condensing & non-condensing tankless water heaters?A condensing tankless water heater changes the design of the heat exchanger to take advantage of the water vapor in the exhaust gas. Navien condensing gas tankless water heaters include a second heat exchanger in order to transfer more heat to the water and lower the exhaust gas temperature to a point where the water vapor condenses inside the heat exchanger, increasing the flow rates and overall efficiency of the water heater. Since the exhaust gases are much cooler when they leave the heat exchanger, the exhaust system can be made up of a wider range of materials, such as Polypropylene or PVC. Because the water vapor from the burner is condensing inside the heat exchanger the installation also requires a drain to dispose of the condensation that is produced. The design of a non-condensing water heater or boiler is to have a heat exchanger that transfers enough heat to get the water temperature where it is needed, but not to lower the exhaust gas temperature to a point where the water vapor condenses. Navien non-condensing gas tankless water heaters are built with a single, or primary, heat exchanger and require exhaust systems that will tolerate higher temperatures. Are condensing tankless water heaters better than non-condensing?It depends, condensing tankless water heaters offer higher flow rates, an efficiency rating of up to 0.96 UEF, and the lower exhaust temperatures allow them to use more cost-effective installation materials such as polypropylene or PVC. Condensing units do need to drain out acidic condensate, so they will require a condensate drain and potentially a condensate neutralizer to neutralize the pH of the condensate before it is drained. Non-condensing tankless water heaters are smaller in design and don’t have to drain acidic condensate, which make them more flexible when it comes to installation location. With an efficiency rating of 0.81 UEF, it is still much more efficient than a standard tank type water heater. Condensing vs Non-Condensing Tankless Water Heaters
Navien Condensing Tankless Water HeatersThe Navien NPE-2 series is a line of high-efficiency condensing tankless water heaters featuring a user-friendly control panel. These tankless water heaters can be installed indoors or outdoors, for residential or commercial use. Navien NPE-2 High Efficiency Condensing Tankless Water HeatersNPE-A2 SeriesAdvanced condensing tankless water heaters featuring Navien’s patented ComfortFlow® system. NPE-180A2 Max Input: 150,000 BTU/h Indoor or outdoor wall-hung Residential/Commercial ComfortFlow® Technology View model NPE-210A2 Max Input: 180,000 BTU/h Indoor or outdoor wall-hung Residential/Commercial ComfortFlow® Technology View model NPE-240A2 Max Input: 199,900 BTU/h Indoor or outdoor wall-hung Residential/Commercial ComfortFlow® Technology View model NPE-S2 SeriesNavien’s standard ultra high-efficiency condensing tankless water heaters. NPE-150S2 Max Input: 120,000 BTU/h Indoor or outdoor wall-hung Residential/Commercial ComfortFlow® Technology View model NPE-180S2 Max Input: 150,000 BTU/h Indoor or outdoor wall-hung Residential/Commercial ComfortFlow® Technology View model NPE-210S2 Max Input: 180,000 BTU/h Indoor or outdoor wall-hung Residential/Commercial ComfortFlow® Technology View model NPE-240S2 Max Input: 199,900 BTU/h Indoor or outdoor wall-hung Residential/Commercial ComfortFlow® Technology View model Navien NPE-2 Series condensing tankless water heaters deliver an endless supply of hot water for any size home.Besides providing hot water where and when it’s needed, the NPE-2 Series offer homeowners the following benefits:
Benefits of Navien Condensing Tankless Water HeatersThe Ultimate Endless Hot Water Solution For Your Home
The ultimate in energy efficiencyNavien condensing technology provides up to 0.96 UEF. These extremely efficient and eco-friendly units provide extra energy savings over traditional tank and non-condensing tankless water heaters. Operating Cost
* Based on Energy Guide cost estimates using $1.09 per therm of natural gas. Cost is in US dollars. Protect the environment as you add value Do tankless water heaters produce condensation?Condensing Tankless Water Heater: A Condensing Tankless Water Heater extracts heat from the exhaust gases and produces gases around 100 degrees. These cooled gases produce condensation inside the water heater.
How much condensate does a water heater produce?When the main burner comes on, the hot flue gases turn into condensate upon contact with these surfaces. The typical home water heater will produce about one-half gallon of water vapor during every hour of operation. Condensate is often mistaken for leaking.
Does a condensing tankless water heater need a drain?Do tankless water heaters need a drain? A condensing tankless water heater will need a condensate drain, while a non-condensing water heater will not.
How much should a tankless water heater drip?A tankless leak is usually around 1GPM or so. Far less than a catastrophic failure of a tank, but still a lot of water if not contained!
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How much condensate does a tankless water heater produce
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