State water heaters Logo
menu

Residential Water Heaters

close

Product Cross Reference

Product Registration

Product Support

Product Literature

Rebates

place

Where to Buy

Not sure which water heater you need?

Use the Product Selector Tool

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

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

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

Model # GTS-540P-PEH
ENERGY STAR
  • bvseo_sdk, net_sdk, 3.2.0.0
  • CLOUD, getAggregateRating, 63ms
  • REVIEWS, PRODUCT
  • bvseo-msg: The resource to the URL or file is currently unavailable.;
close

State products are available through independent plumbing contractors.
Search
Enter your city and state or zip code to find a local installer.
List My Company Here

Product Description

The 540P series integrates a recirculation pump to provide instant hot water in residential applications with dedicated recirculation lines. The pump is easily controlled with a simple user interface and multiple pump settings allow you to customize pump operation to meet your needs while maximizing heater efficiency. As part of the high efficiency tankless family, the 540P series provides endless hot water while being environmentally friendly.

The GTS-540P-PEH outdoor tankless water heater uses up to 199,000 BTU/hr of liquid propane (LP) to deliver an endless supply of hot water for a 3 bath home in northern climates and a 4 bath home in southern climates. It is built with commercial grade materials like marine-grade 316L stainless steel giving it an industry-leading warranty.

ENERGY STAR

Where to Buy

Enter your city and state or zip code below to find a local installer.


Find Hide Search
State products are available through independent plumbing contractors.
Enter your city and state or zip code below to find a local installer.


Find
List My Company Here

Certifications

15

year

limited warranty

0.95

Uniform 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
  • Emissions: Ultra-Low NOx
  • Maximum BTU/h: 199,000
  • UEF 0.95
  • Minimum BTU/h: 13,000
  • Limited Heat Exchanger Warranty: 15 Years
  • Limited Parts Warranty: 5 Years
  • Water Connection Location: Bottom
  • Water Connection Size: 3/4"
  • Heat Exchanger: Commercial Grade Copper
  • Secondary Heat Exchanger: Stainless Steel
  • Voltage: 120
  • ENERGY STAR®: Yes
  • LEED Points: 1.5
  • Remote Control: Yes
  • Technology: Condensing
  • Height: 23 5/8"
  • Width: 17 3/4"
  • Depth: 11 1/4"
  • Product Weight: 62.5lbs/28.3kg
  • Shipping Weight: 69
  • Vent Material: PVC, CPVC, PP, ABS, SS

Integrated Recirculation Pump

The integrated recirculation pump will simplify installation as you will not need to spend time and money sourcing & installing the pump and controls. The front panel controls make it simply to set your recirculation pump operation so you now that you will have hot water at your faucet.

Dual Heat Exchanger

The primary heat exchanger is constructed of commercial-grade 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.

Endless Hot Water

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


How long would you like to enjoy a shower?

Fairfield, Connecticut 06828

Change Location or Advanced Settings
Number of minutes you can enjoy a shower before running out of hot water. Assumes a 2.2 GPM flow rate.

Need to view or change our assumptions? Access the advanced settings.
minutes

Single
Shower Length

Number of minutes you can enjoy a shower before running out of hot water. Assumes a 2.2 GPM flow rate.

Need to view or change our assumptions? Access the advanced settings.

Close
Number of back-to-back showers you can take without running out of hot water. Assumes a 2.2 GPM flow rate and an 8 minute shower length.

Need to view or change our assumptions? Access the advanced settings.
Showers

Back to
Back

Number of back-to-back showers you can take without running out of hot water. Assumes a 2.2 GPM flow rate and an 8 minute shower length.

Need to view or change our assumptions? Access the advanced settings.

Close
Number of showers you can take at the same time without running out of hot water.Assumes a 2.2 GPM flow rate and an 8 minute shower length.

Need to view or change our assumptions? Access the advanced settings.
Showers

 At the Same Time

Number of showers you can take at the same time without running out of hot water.Assumes a 2.2 GPM flow rate and an 8 minute shower length.

Need to view or change our assumptions? Access the advanced settings.

Close
Biggest tub this water heater will fill without running out of hot water. Assumes a 5.0 GPM flow rate, and a 67% fill level.

Need to view or change our assumptions? Access the advanced settings.
gallons

Maximum Tub Size

Biggest tub this water heater will fill without running out of hot water. Assumes a 5.0 GPM flow rate, and a 67% fill level.

Need to view or change our assumptions? Access the advanced settings.

Close
Number of minutes required to fill a 55 gallon tub. Assumes a 5.0 GPM flow rate and a 67% fill level.

Need to view or change our assumptions? Access the advanced settings.
minutes

Time to Fill Tub

Number of minutes required to fill a 55 gallon tub. Assumes a 5.0 GPM flow rate and a 67% fill level.

Need to view or change our assumptions? Access the advanced settings.

Close
The estimated annual cost to operate this water heater in Fairfield, Connecticut.

Need to view or change our assumptions? Access the advanced settings.
$ Dollars

Estimated Energy Cost

The estimated annual cost to operate this water heater in Fairfield, Connecticut.

Need to view or change our assumptions? Access the advanced settings.

Close

Many factors affect the actual performance of a water heater. This represents our closest approximation of your likely experience with this water heater in Fairfield, Connecticut, but actual performance may vary depending on factors beyond our ability to control or estimate. To view or adjust our assumptions of the most common factors that impact this product’s performance in Fairfield, Connecticut, please view the advanced settings. *Annual Estimated energy costs are estimated calculated from the energy efficiency of each water heater, your household’s estimated hot water usage & set temperature, the average groundwater temperature for your location, and residential energy prices for your location as reported by the Department of Energy and the Energy Information Administration.

Show More

expand_more

Show Less

expand_less

Find the Right Water Heater

Answer a few questions about how much hot water you need, and we'll show you personalized recommendations and direct you to a local contractor to help with your installation.

Product Features & Options

Integrated Recirculation Pump

The integrated recirculation pump will simplify installation as you will not need to spend time and money sourcing & installing the pump and controls. The front panel controls make it simply to set your recirculation pump operation so you now that you will have hot water at your faucet.

Dual Heat Exchanger

The primary heat exchanger is constructed of commercial-grade 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.

Endless Hot Water

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


Emissions: Ultra-Low NOx
Maximum BTU/h: 199,000
UEF 0.95
Minimum BTU/h: 13,000
Limited Heat Exchanger Warranty: 15 Years
Limited Parts Warranty: 5 Years
Water Connection Location: Bottom
Water Connection Size: 3/4"
Heat Exchanger: Commercial Grade Copper
Secondary Heat Exchanger: Stainless Steel
Voltage: 120
ENERGY STAR®: Yes
LEED Points: 1.5
Remote Control: Yes
Technology: Condensing
Height: 23 5/8"
Width: 17 3/4"
Depth: 11 1/4"
Product Weight: 62.5lbs/28.3kg
Shipping Weight: 69
Vent Material: PVC, CPVC, PP, ABS, SS

Certifications

15

year

limited warranty

0.95

Uniform 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
place

Where to Buy

A. O. Smith water heaters are available through your local plumbing professional.

Literature

Tech Docs Marketing
  • bvseo_sdk, net_sdk, 3.2.0.0
  • CLOUD, getReviews, 0ms
  • REVIEWS, PRODUCT
  • bvseo-msg: The resource to the URL or file is currently unavailable.;