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Reliance 40 gal 40000 BTU Natural Gas Water Heater
Reliance 40 gal 40000 BTU Natural Gas Water Heater
Reliance 40 gal 40000 BTU Natural Gas Water Heater
Reliance 40 gal 40000 BTU Natural Gas Water Heater
Reliance 40 gal 40000 BTU Natural Gas Water Heater

Reliance 40 gal 40000 BTU Natural Gas Water Heater

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

A 40,000 BTU Low NOx burner delivers steady hot water while keeping emissions in check, backed by Reliance's 6-year warranty.
Reliance MPN 6-40-NBCS
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $500.99, average $589.99
In-Store Exclusive

This one's worth the trip to the store.

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About Product Overview

This Reliance 40-gallon natural gas water heater is built for households that need steady, dependable hot water without a lot of guesswork on installation. The 40,000 BTU burner is a Low NOx design, which means cleaner combustion and easier compliance in areas with tighter air-quality rules. A top water connection layout keeps plumbing straightforward, and the included temperature and pressure relief valve is a code-required safety feature that's ready to go out of the box.

It's rated for a wide operating range, from 55°F up to 155°F, and handles elevations up to 10,100 feet, so it works in most residential settings including higher-altitude homes. CSA listing confirms it meets recognized safety standards, and it's backed by Reliance's 6-year warranty. Made in the USA, this is a straightforward residential replacement or new install for a natural gas line.

  • 40-gallon tank, 40,000 BTU natural gas burner
  • Low NOx burner for cleaner emissions
  • Top water connections, 3/4-inch size; 1/2-inch gas connection
  • Vent diameter of 3 or 4 inches
  • Max pressure 150 PSI; CSA listed; temperature/pressure relief valve included
  • 6-year warranty; made in USA

The Details Specifications

Brand Reliance
UPC 091193004838
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Dimensions (L × W × H) 26 × 23 × 52
Weight 135 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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