Noritz upgrades EZ Residential Tankless Series with industry-best, 25-year warranty, boosting its energy efficiency rating to 0.96 UEF

Specially designed to speed replacement of conventional storage-tank water heaters, the EZ Series features upgraded dual stainless steel heat exchangers, a built-in non-return valve, longer venting lengths and — an industry first — a new burner control to handle high incoming water temperatures in the summer.

FOUNTAIN VALLEY, CALIFORNIA (DECEMBER 15, 2022) — The newly upgraded EZ Series of Residential Condensing Tankless Water Heaters from Noritz America now offers an improved and industry-leading Uniform Energy Factor of 0.96, while maintaining a 25-year warranty — also an industry-best — on its redesigned, dual stainless-steel heat exchangers. The higher UEF should deliver substantial energy savings and lower monthly fuel bills to the home or business owner over the extended life of these highly durable water heaters.

The key to both the warranty and the efficiency gain — up from 0.95 UEF for the previous EZ Series — is the unique blending of two types of high-grade stainless steel in the heat exchangers, using the material that best supports each component’s function. The primary heat exchanger is made of a higher tensile strength stainless material to resist heat shock and cracking under the high temperatures it routinely handles. The secondary exchanger extracts latent heat from the combustion process, producing an acidic condensate. As a result, it features a stainless material that is especially adept at resisting corrosion and scale buildup, even after years of demanding usage.

The upgraded EZ Series also offers an industry-first: A Steady BTU (SBTU) Mode that eliminates concerns over high incoming water temperatures, particularly in warmer regions of the country. Both EZ models, the EZ98DV and the EZ111DV, have minimum BTU per hour outputs of 18,000. But the series’ breakthrough, burner-control technology reduces the effective minimum input by more than two thirds — to under 5,000 BTU per hour — whenever incoming water temperatures approach 90°F.

“The SBTU Mode resolves what many have considered a drawback in tankless water heater technology: how to handle minimal demands for heat in the warmer summer months,” says Noritz Executive Vice President-Sales and Marketing Jason Fleming. “The new and highly precise control of the combustion process should effectively eliminate this problem.”

Other key enhancements to the upgraded EZ Series, delivering greater installation flexibility, include:

• Faster common venting: Each EZ unit now has a fully integrated non-return valve (NRV) to streamline common venting for up to two heaters with no need for additional accessories. Because the NRV is not an add-on, but built right into the tankless water heater, operational safety is assured, preventing the harmful exhaust of one water heater from back-flowing into the other, non-operating unit. Installation time and cost are significantly reduced by eliminating the need to install the NRV externally between the water heater and the common-vent header.
• Longer vent lengths: The new EZ Series models can also direct-vent, using either 2-inch or 3-inch PVC or CPVC or rigid polypropylene materials. In addition, vent lengths have been extended: 65 feet for 2-inch pipe, up from the previous 60 feet; and 150 feet for three-inch pipe, up from the previous 100 feet.

As with their predecessor models, the new EZ98DV and the EZ111DV share three critical design features. Unique to the EZ Series, these features help reduce a homeowner’s upfront investment by sharply curtailing the installation time and cost for the plumbing or HVACR contractor:

• top-mount, hot-water and cold-water connections that reduce the amount of new-plumbing work normally required by a tankless-for-tank replacement;
• maximum venting flexibility by repurposing the existing flex vent used by the tank water heater being replaced as a chase for the new venting — again cutting installation time;
• the possibility of reusing the tank unit’s half-inch gas line, avoiding the substantial expense of running a new gas line.

Both models are available in their own “EZTR Bundle” packages (EZTR50 and EZTR75) that include materials and accessories for direct indoor replacement of 50- and 75-gallon, tank-type water heaters.

The EZ98DV has a maximum input of 180,000 BTU/h; a capacity range of 0.5 to 9.8 gallons per minute (GPM); and water temperatures from 100°F to 140°F (in 5°F intervals). The EZ111DV has a maximum input of 199,900 BTU/h, a capacity range of 0.5 – 11.1 GPM, and the same water temperatures.

Both units weigh 70 pounds and can be installed indoors or outdoors. (Accessories required for single-vent or outdoor installations). Additional accessories include a remote controller and cord, anchoring screws and wall-mounting brackets.

For more information on the new EZ Series of Residential Condensing Water Heaters, visit: http://www.ezseries.noritz.com.

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For more information on the full line of Noritz tankless water heating products, visit www.noritz.com. You can also telephone us at 866.766.7489 or e-mail us at [email protected].

For editorial assistance, contact John O’Reilly at GreenHouse Digital PR, 15255 South 94th Avenue, Suite 500 | Orland Park, IL 60462; tel.: 708.428.6385; e-mail: [email protected].

NORITZ AMERICA CORPORATION, a subsidiary of Noritz Japan, has corporate offices in Fountain Valley, Calif., and Atlanta, offering a full line of tankless water heaters and high efficiency combination boilers to meet the hot water demands of residential and commercial applications. Noritz supports its products with a national network of skilled representatives and employees who are committed to providing the finest products and services to our communities by helping consumers live in a more comfortable, efficient and healthy lifestyle. For more information on Noritz America and the entire line of Noritz’s ENERGY STAR^® tankless water heaters, please call (877) 986-6748 or visit our website at www.noritz.com.

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