yesallevent We spent many hours on research to finding ao smith tankless water heater ratings, reading product features, product specifications for this guide. For those of you who wish to the best ao smith tankless water heater ratings, you should not miss this article. ao smith tankless water heater ratings coming in a variety of types but also different price range. The following is the top 10 ao smith tankless water heater ratings by our suggestions
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American Standard TCWH199S-AS-NG 199,000 BTU Tankless Natural Gas Ultra Low Nox Condensing Water Heater
- Superior thermal efficiency – with energy conservation in mind, these units maintain an impressive 96% efficiency rating
- Certified – these units hold both ANSI z2.1.10.3/csa 4.3 certifications and are designed for indoor wall mounting
- Durable – both the primary and secondary heat exchangers are constructed of 304 Grade stainless Steel
- Eco friendly – ultra low NOx combustion system compatible for both natural gas and liquid propane. These units are also field convertible from one gas source to another
- Energy Star & ETL certified – uses 14% to 55% less energy than equipment that meets minimum federal standards
American standard water heaters tankless condensing residential water heaters deploy the latest in cutting edge technology. This indoor, wall mounted unit produces up to 11 gallons of hot water per minute. Designed for superior thermal transfer, increased resistance to scale formation and low installation costs. Built with efficiency in mind, these tankless condensing units boast an impressive energy factor of 96 drastically reducing energy costs when compared to a conventional storage tank water heater. With instantaneous hot water and no storage tank, leaky water heaters are a thing of the past! these units come with a 12 year limited heat exchanger warranty and a 5 year limited parts warranty.
American Standard TCWH180S-AS-NG 180,000 BTU Tankless Natural Gas Ultra Low Nox Condensing Water Heater
- Superior thermal efficiency – with energy conservation in mind, these units maintain an impressive 96% efficiency rating
- Certified – these units hold both ANSI z2.1.10.3/csa 4.3 certifications and are designed for indoor wall mounting
- Durable – both the primary and secondary heat exchangers are constructed of 304 Grade stainless Steel
- Eco friendly – ultra low NOx combustion system compatible for both natural gas and liquid propane. These units are also field convertible from one gas source to another
- Energy Star & ETL certified – uses 14% to 55% less energy than equipment that meets minimum federal standards.Gas valve system:Air ratio valve
American standard water heaters tankless condensing residential water heaters deploy the latest in cutting edge technology. This indoor, wall mounted unit produces up to 11 gallons of hot water per minute. Designed for superior thermal transfer, increased resistance to scale formation and low installation costs. Built with efficiency in mind, these tankless condensing units boast an impressive energy factor of 96 drastically reducing energy costs when compared to a conventional storage tank water heater. With instantaneous hot water and no storage tank, leaky water heaters are a thing of the past! these units come with a 12 year limited heat exchanger warranty and a 5 year limited parts warranty.
Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM – Natural Gas
Product Description
The NORITZ NRC66DV is a fully condensing tankless water heater with an advanced heat exchanger design and built-in controller. With flow rates up to 6.5 gallons per minute the NRC66DV delivers the highest flow rates in its category and can be vented using 3″ Schedule 40/80 PVC, PP or CPVC. Various adapters and terminations are available to allow for a wide array of venting options. This unit ships complete with a 6′ power cord. IK-WV-200-1-XX-LF valve kit (required for installation) is sold separately. Common companion items include rain cap (PRC-1), atmospheric conversion kit (SVCK-3) and horizontal termination/intake PVT-HL.
From the Manufacturer
Indoor tankless water heater up to 6.5 gallons per minute. Noritz has been an innovator in the water heating industry for over 60 years. We introduced the first modern, electronically controlled tankless water heater in 1981 and we remain the leader in energy savings and superior hot water delivery today. Our goal is to empower you with the highest quality products available at superior value.
Takagi T-H3J-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 6.6-Gallon Per Minute
Product Description
With gas inputs of 160,000 BTU, the T-H3J can produce enough hot water for two bathrooms in warmer climates or 1.5 baths in colder climates.
From the Manufacturer
With gas inputs of 160,000 BTU, the T-H3J can produce enough hot water for two bathrooms in warmer climates or 1.5 baths in colder climates.
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
- Lifetime warranty
- Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
- Never run out of hot water with an ECOSMART tankless water heater
- Patented Self Modulating Technology and design
- ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98
Product Description
This Smart Technology electric tankless water heater is configured as a “whole home” model for climates where incoming water temperature is 67°F and above. This model is well suited for heating up to 2-Gallon per minute, which is the equivalent of one shower head (with a 1.5 gpm flow) and one sink with a low inlet water temperature of 67°F and an output setting of 105°F. Digital Temperature Control allows you to set your temperature in increments of 1 Degree. This model can also be used in colder climates as a Point of Use for a sink or other low flow application. All tankless water heaters are sized based on flow rate and temperature rise, and there is a direct relationship between the two. So if used in a cold area requiring a high temperature rise, it will be more limited in the amount of fixtures (gallons per minute) it can heat at one time compared to a warmer climate. When sized properly this water heater will provide endless hot water and only consume the energy needed, giving the user complete control. Prior to purchase and installation please verify this model is the right size for the expected demand and electrical requirements. The ECO 11 requires a minimum 125 amp electrical panel for installation with (1) 60 amp double pole breaker connected to (1) set of #6 awg wire. Plumbing connections are 1/2″ compression fitting with the option of 1/2″ NPT adapter included. For additional assistance please feel free to contact our support center at 877-474-6473.
NOTE : 11Kw at 220 is equal to 13kw at 240.
From the Manufacturer
This Smart Technology electric tankless water heater is configured for climates where incoming water temperature is 67 Degree F and above. This model is well suited for heating up to 2-Gallon per minute, which is the equivalent of one shower head (with a 1.5 gpm flow) and one sink with a low inlet water temperature of 67 Degree F. Digital Temperature Control allows you to set your temperature in increments of 1 Degree. This model can also be used in colder climates as a Point of Use for a sink or other low flow application. Prior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirements.
Tankless Water Heater Electric ECOTOUCH 9KW 240V on Demand Water Heater Self-Modulating Instant Hot Water Heater Point Of Use Water Heater ECO90 White
- 【HOT WATER: INSTANT&ENDLESS】 With 9kW tankless water heater electric ECO90, you can easily get sufficient hot water of even 116℉or higher. Instead of storing water and long time heating, ECO90S electric tankless water heater provides you no waiting instant hot water, nor temperature fluctuations, bringing you instant hot and excellent experience of comfort anytime you want.
- 【INTELLIGENT SELF MODULATION】 As water flow reduces, power input decreases: ECO90S electric hot water heater intelligently adjusts power input and water temp in real time, which gets you the ideal temp and comfortable hot water. Better still, smart self modulation makes the on demand hot water heater achieve 99.8% optimal energy efficiency, thus, it will help cut the electricity bill for you.
- 【UPGRADED HEATING SYSTEM】Featuring micro-computer control and patent heating technology, ECO90S electric tankless water heater perfectly achieves water heating, keeps outlet temp stable at your need, and promises no “cold water sandwiching”. Unique heating element avoids any corrosion inside pipes so as to extend service lifespan of the unit.
- 【SAFE AND DURABLE】Applied with multiple protection devices, every piece ECO90S tankless water heater goes through strict tests to ensure 100% safety. Inner water and electricity lines are designed to run separately so as to avoid leakage risk. Approval by ETL and qualifies for UL, you can expect outstanding performance for years to come.
- 【CONVENIENT USE】The ECO90S tankless electric water heater comes with digital display & touch control panel so temp setting is an easy job. It’s space-saving, measuring（H x W x D）: 15.74″ x 10.24″ x 2.05″. Plus it has a stylish, modern design that blends in any decor. Please verify it is the right size for you: 9kW@240V(240V only)
- pipes fittings: 1/2″ NPT.
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology
- Savings of up to 50% on water heating costs. Dimensions :17H x 17W x 3.625D inches
- Pipes fittings :3/4 inch NPT
- Digital temperature control in 1-degree increments allows control of hot water
- Activation Flow: 0.3 GPM
- Copper and stainless components designed for efficiency, durability and easy replacement.
- Compact size saves valuable storage space, while the stylish and advanced design is pleasing to the eye and Copper and stainless components designed for efficiency, durability and easy replacement.
- Prior to purchase & installation, please verify that this model is the right size for your hot water needs and electrical requirements. Electrical requirements: 27 kW, 240 volts, (3) 40 required breakers, 112.5 maximum power (AMP), (3) 8 required wire.Amperage Draw:113 A
- Required Breaker Quantity: Three 40 Amp Double Pole
- Recommended Electrical Panel: 200 Amps
- NEVER run out of hot water with an ECOSMART tankless water heater.
- Save up to 12 cubic feet of storage space.
- Digital temperature control in 1-degree increments gives users complete control of hot water
Product Description
Configured for cold climates or high flow rates. Well suited where incoming water temperature can drop below 45 F. For use in more demanding water usage applications. Self modulating flow sensor technology regulates the amount of energy required to heat the water needed. Digital temperature display showing the outlet water temperature setting. Uses (3) 9 KW standard Emerson electric heating elements with brass tops to prevent electrolysis. Copper heat exchanger. Automatic resettable thermostat. (3) 40 DP breakers required. 112A draw. Required wire: 3 sets 8 AWG. Pipe fitting: 3/4” NPT. Energy efficiency: 99.8%. UL and CSA certified.Weight: 11 lb. Lifetime warranty.
From the Manufacturer
This Smart Technology electric tankless water heater is configured for climates where incoming water temperature can reach as low as 37 degrees. The ECO 27 is capable of heating nearly 3 gallons per minute at this temperature. The ECO 27 is the largest electric tankless water heater available with Patented Self Modulating Technology. This model is well-suited for homes in the northern U.S., Canada, and in the southern U.S. for large Roman-style or Jacuzzi tubs that generally have more demanding water usage needs. Digital temperature control allows you to set your temperature in increments of 1 degree. Prior to purchase and installation please verify that this model is the right size for your hot water needs and electrical requirements.
Stiebel Eltron Tankless Water Heater – Tempra 15 Plus – Electric, On Demand Hot Water, Eco, White
- CONTINUOUS FLOW – Advanced Flow Control German patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity. Hot showers will never be interrupted again.
- SPACE & ENERGY SAVER – Its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Eco friendly unit saves energy with auto-modulation and the ability to electronically measure water flow. Savings monitor even shows how much you save on energy costs.
- EASY OPERATION – Electronic flow sensor switches on the powerful solid copper interior heating system of the water heater. It’s noise free while in use and has a digital temperature display and preset temperature memory buttons.
- TEMPRA 15 PLUS – This specific model is 14.4kW, 240V/208V, requires a min recommended household electric service of 100 A, and offers an output water temperature of 86˚ to 140˚F. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels.
- WARRANTIES INCLUDED – Stiebel Eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability. Our 7-Year Leakage and 3-Year Parts Warranties are included with purchase.
The Stiebel Eltron Tempra 15 Plus Tankless Water Heater features exclusive Advanced Flow Control™ German patented technology invented by Stiebel Eltron to automatically maintain water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity to ensure that hot showers will never be interrupted. Tempra 15 Plus will typically use 15-20% less energy compared to conventional electric tank water heaters. Although, it’s possible to save significantly more energy depending on personal home usage habits. The difference is that conventional tank water heaters continually store hot water, and as a result, lose 15%-20% of the total energy consumed to the environment around them. This is called standby heat loss. Tank water heaters that use gas or oil are even less efficient, because they also lose heat through their vents to the outdoors. Our tankless water heaters do not need venting, and will not store hot water, waiting for you to use it. They operate on-demand to provide continuous and endless hot water when you need it, and not waste energy when you don’t. CERTIFICATIONS INCLUDE – ANSI/UL Std. 499, CSA Std. C22.2 No. 88, ISO 9001, WQA tested & certified against NSF/ANSI 372 for lead free compliance. TECHNICAL SPECIFICATIONS – Single Phase 50/60 Hz; Voltage: 240 V/208 V; Wattage: 14.4 KW/10.8 KW; Min. recommended household electric service 100 A; Amperage draw: 2 x 30 A 2 x 26 A; Number and min. recommended size of circuit breakers: 2 x 30 A (DP); Number of runs and min. recommended wire size (copper): 2 x 10/2 AWG; Max. temperature rises: 65 F/49 F at 1.50 GPM, 43 F/37 F at 2.25 GPM, 33 F/25 F at 3.00 GPM, Min. water flow to activate unit: 0.50 GPM/1.9l/min; Weight: 16.1 lb/7.3 kg; Nominal water volume: 0.26 gal/1l; Max. inlet water temperature: 131 F/55 C; Working pressure: 150 PSI/10 BAR; Tested to pressure: 300 PSI / 20 BAR; Water connections: 3/4″ NPT.
Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, small, GREY
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
- Simple installation – bottom 3/4 inch NPT water connections
- Threaded for easy replacement, simple installation, digital temperature display
Professional classic® tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use or multiple applications
Rinnai V65IN 6.6 GPM Indoor Low NOx Tankless Natural Gas Water Heater
Product Description
Features ENERGY STAR Qualified Energy Factor of .82 for Natural Gas and Propane Certified for Installation in Manufactured (Mobile) Homes Leak detection shuts off water to unit to limit property damage Enhanced scale detection lessens possibility of serious, long-term damage to unit Temperature lock prevents accidental or unauthorized changes to water temperature Complies with South Coast Air Quality Management District 14 ng/J or 20 ppm NOx emission levels Rinnai Value Series Tankless Water Heater Product Warranty Dimensions Width: 14 Inches Height: 23 Inches Depth: 9 Inches Weight 45.6 Pounds Ignition Direct Electronic Hot Water Capacity 0.26 to 6.6 GPM Minimum Activation Rate 0.4 GPM Minimum/Maximum Gas Rate (Input BTUs ) 10,300 150,000 Energy Factor 0.82 for Natural Gas and Propane Energy Star Yes Approved Gas Types Natural Gas or Propane Temperature Settings 98F – 140F with MC-91-2US 98F – 160F with MCC-91-2US Type of Controller MC-91-2US (included) MCC-91-2US (optional for Hydronic Applications) MC-100V-1US Deluxe Controller (optional) BC-100V-1US Bathroom Controller (optional) Ultra Lox NOx Yes Electrical AC 120 Volts, 60 Hz Electrical Consumption Normal: 76 Watts Standby: 2 Watts Anti-Frost Protection: 120 Watts Service Connections Gas Supply: 3/4 Inch MNPT Cold Water Inlet: 3/4 Inch MNPT Hot Water Outlet: 3/4 Inch MNPT. Turn off gas supply and 120 V power supply
From the Manufacturer
Features ENERGY STAR Qualified Energy Factor of .82 for Natural Gas and Propane Certified for Installation in Manufactured (Mobile) Homes Leak detection shuts off water to unit to limit property damage Enhanced scale detection lessens possibility of serious, long-term damage to unit Temperature lock prevents accidental or unauthorized changes to water temperature Complies with South Coast Air Quality Management District 14 ng/J or 20 ppm NOx emission levels Rinnai Value Series Tankless Water Heater Product Warranty Dimensions Width: 14 Inches Height: 23 Inches Depth: 9 Inches Weight 45.6 Pounds Ignition Direct Electronic Hot Water Capacity 0.26 to 6.6 GPM Minimum Activation Rate 0.4 GPM Minimum/Maximum Gas Rate (Input BTUs ) 10,300 150,000 Energy Factor 0.82 for Natural Gas and Propane Energy Star Yes Approved Gas Types Natural Gas or Propane Temperature Settings 98F – 140F with MC-91-2US 98F – 160F with MCC-91-2US Type of Controller MC-91-2US (included) MCC-91-2US (optional for Hydronic Applications) MC-100V-1US Deluxe Controller (optional) BC-100V-1US Bathroom Controller (optional) Ultra Lox NOx Yes Electrical AC 120 Volts, 60 Hz Electrical Consumption Normal: 76 Watts Standby: 2 Watts Anti-Frost Protection: 120 Watts Service Connections Gas Supply: 3/4 Inch MNPT Cold Water Inlet: 3/4 Inch MNPT Hot Water Outlet: 3/4 Inch MNPT
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