Tankless Water Heater Condensing Ultra-Low NOx Indoor 199,000 BTU Natural Gas

Tankless Water Heater Condensing Ultra-Low NOx Indoor 199,000 BTU Natural Gas

Model ATI-540H-N

ENERGY STAR
Tankless Water Heater Condensing Ultra-Low NOx Indoor 199,000 BTU ATI-540H-N is rated 4.8824 out of 5 by 17.
Rated 5 out of 5 by from Great control features So glad that we don't run out of hot water! Love it!
Date published: 2015-01-02
Rated 5 out of 5 by from Nice Hot Shower I've had this tankless hot water heater for about 2 months and it works great. Now the only problem is I hate to get out of my nice hot shower!
Date published: 2014-12-30
Rated 5 out of 5 by from American made and efficient-Tankless Water Heater I purchased the A.O. Smith Tankless Water Heater and it was installed by Richard Witham Plumbing here in Collierville, TN. We are very pleased with the product, as it provides us with continuous hot water, and the unit is very "low-noise." Most of all, the product is American-made! We love it.
Date published: 2014-12-26
Rated 5 out of 5 by from IT'S A NO BRAINER I used a system like this in Europe many years. it was no where near as efficient as this unit. I can't believe how fast the hot water is at the tap. I take long showers and the temp. never waivered. these machines should be installed in every household. just think, you never have to keep a tank of water hot for when you need it. it's a great energy saver and environmental saver. (the only time you use gas is when you use the hot water.) AS FOR APPEARENCE it can hang in pretty much any utility closet. see install guide.
Date published: 2014-12-23
Rated 5 out of 5 by from endless hot water one shower in the house and three girls to get ready in the morning you run out of hot water with the old tank,so after lots of investigating on tankless units, this is the one that always came out on top, and highly recommended by many plumbers.
Date published: 2014-11-28
Rated 4 out of 5 by from Space Saving Replaced a tank water heater due to crack in tank and ruined basement floor. put in tankless due to leak feature to not ruin floor again when heater fails.
Date published: 2014-11-22
Rated 5 out of 5 by from lots of hot water it never ends We love our new water heater it is great never runs out.
Date published: 2014-11-18
Rated 5 out of 5 by from Very Please with our purchase This tank was recomended by our heating/plumbing contractor. Wonderful at supply of hot water, GPM excellant.
Date published: 2014-11-13

The 540H is well suited for residential/commercial applications such as small restaurants and beauty salons. Utilizing HRS35 copper alloy for the heat exchanger tubing, the 540H is also suitable for heavier-residential usages such as space heating or domestic recirculation systems. Remote control included as a standard feature. Indoor models are certified up to 10,100 ft. altitude. Thicker heat exchanger drum and utilizes HRS35 (heat-resistant) copper for the heat exchanger tubing. Provides a variety of installation options: outdoor and direct vent. Includes a pump control port, ensuring efficient operation of all circulation pumps. Complies with Ultra-Low NOx regulations and meets the energy efficiency requirements of ASHRAE 90.1b-1992. Easy-Link System capable up to 4 units. Multi-Link System capable up to 20 units.

The ATI-540H-N tankless water heater uses up to 199,000 BTUs of natural gas to deliver a max flow rate of 6.6 GPM. It utilizes condensing technology to achieve an Energy Factor of 0.95, and is ENERGY STAR® qualified. This model meets Ultra-Low NOx emission requirements, and comes with a 15-year limited warranty.

Where to Buy

Where to Buy

Ashburn, VA

Location #1

Hawk Construction LLC

Annandale, VA

More Info >>
Location #2

Service Specialties, Inc.

Chantilly, VA

Offers Consumer Financing Se Habla Español

More Info >>
Location #3

Gidders & Sons Plumbing, LLC

Fairfax, VA

More Info >>
View All List My Company Here

Product Features & Options

Dual Heat Exchanger

The primary heat exchanger is constructed of commercial-grade HRS35 copper, which is stronger than standard copper and more resilient against erosion. Condensing models feature 316L stainless steel secondary heat exchanger, providing additional protection against corrosion.

Safety Features

Includes freeze, overheat, surge protection and troubleshooting diagnostic codes.

Space Savings

A. O. Smith tankless water heaters take up much less space that your conventional tank-style water heater. With no tank to steal valuable storage space, our wall-mount design allows for additional storage and flexibility.

Endless Hot Water

The comprehensive line of A. O. Smith tankless water heaters are an excellent whole-home water heating solution that supply endless hot water.

How it Works

The comprehensive line of A. O. Smith tankless water heaters provide hot water on-demand.

• A hot water tap is opened
• The opened tap allows water to flow through the water heater. An internal water flow sensor detects this flow
• Upon flow detection, the flow sensor sends the activation signal to the computer board
• The computer automatically ignites the burner
• As water flows through the heat exchanger, it absorbs heat from the burner
• By the time the water exits the heater, it has reached the designated set temperature
• When the hot water tap is closed, the water heater automatically turns off

Certifications

15

year

limited warranty

0.95

energy factor

CSA International Low Lead Content Certification in compliance with U.S. and Canadian safety standards on gas components
AHRI Air-Conditioning, Heating and Refrigeration Institute
CSA International Design Certification The CSA Blue Star indicates the product is certified to applicable U.S. standards for appliances using gas or other petroleum fuel
CSA International Certification in compliance with U.S. and Canadian for gas appliances and other liquid petroleum, LP, propane products

Product Specifications


Tech Specs
Emissions: Ultra-Low NOx
Maximum BTUs: 199,000
Minimum BTUs: 15,000
Limited Heat Exchanger Warranty: 15 Years
Limited Parts Warranty: 5 Years
Water Connection Location: Bottom
Water Connection Size: 3/4"
Heat Exchanger: HRS35 Copper Alloy
Secondary Heat Exchanger: Stainless Steel
Voltage: 120
Energy Factor: 0.95
ENERGY STAR®: Yes
Digital Display: Yes
Remote Control: Yes
Technology: Condensing
Dimensions & Venting
Type: Space Saving
Height: 23 5/8"
Width: 17 3/4"
Depth: 11 1/4"
Product Weight: 59lbs/27kg
Shipping Weight: 63lbs
Vent Type: Direct Vent
Vent Length: 70 feet at 3 diameter
100 feet at 4 diameter
Vent Material: PVC, CPVC, PP, ABS, SS

Incentives

Rebate and incentive programs provide cash-back to consumers for the purchase of appliances that meet certain energy efficiency standards. Often, these standards are tied to the ENERGY STAR® program.

Cash for Appliances is designed to encourage the purchase of energy efficient appliances. Consumers who purchase ENERGY STAR® or CEE qualified appliances can receive cash rebates. Most states are offering rebates in the $50 to $250 range.

Photos

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Need More Hot Water?

There's no reason to run out of hot water. If you're not sure that the ATI-540H-N provides enough hot water for your needs, consider these:


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