View Similar Products

Rheem Ultra Low NOx Commercial Gas Water Heater: 91 gal Tank Capacity, 258 gph First Hour Recovery Rate, 76 5/16 in Ht

Item # 973Z329

$4,734.80 Each

Product Specs

Tank Capacity: 91 gal
First Hour Recovery Rate: 258 gph
Heater Power: 199,900 BTU/hr
Height: 76 5⁄16 in
Side Water Connection: 1 1⁄2 in
Vent Style: Standard
Ignition Style: Spark to Pilot
Draft Hood Diameter: 6 in
Height-to-Gas Connection: 7 in
Height-to-Hot Side Connection: 66 3⁄8 in
Height-to-Top of Vent Connection: 76 5⁄16 in
Jacket Diameter: 26 1⁄4 in
Recovery Rate: 138 gph @ 140° F Rise; 149 gph @ 130° F Rise; 162 gph @ 120° F Rise; 176 gph @ 110° F Rise; 194 gph @ 100° F Rise; 277 gph @ 70° F Rise; 388 gph @ 50° F Rise
Height-to-Cold Side Connection: 30 5⁄8 in
Application: Commercial; Residential
Features: Universal Tank, Space-Saver Design, Spark-To-Pilot Ignition System, Sentinel Led Diagnostic System; Patented Multiflue Design; Low Profile Automatic Flue Damper
Gas Inlet Size: 3⁄4
Height-to-Top of Heater: 71 13⁄16 in
Includes: (1) Brass Drain Valve; (1) Factory Installed T Valve; (1) Factory Installed P Valve
Low NOx Burner: Yes
Manufacturers Warranty Length: Limited 3 yr Tank and 1 yr Parts
Maximum Pressure: 160 psi
Maximum Temperature: 180 ° F
Minimum Temperature: 100 ° F
Mounting Style: Vertical
Pack Qty: 1
Pack Unit: EA
Specifications Met: Meets or Exceeds National Appliance Energy Conservation Act and ASHRAE Requirements
Top Nipple Spacing: 20 in
Top Water Connection Size: 1 1⁄2 in
Voltage: 120 V AC

Compliance and Restrictions

WARNING Cancer and Reproductive Harm -

Country Of Origin

  • USA
  • This product has been certified by a third party to be compliant with the “Safe Drinking Water Act” requirements for low lead in potable (human consumption - drinking and cooking) and non-potable water applications (non-human consumption).
This item has been restricted from sale in the following states.
  • TX

About Gas Water Heaters

Standard gas water heaters are a popular choice in areas where electricity costs more than liquid propane or natural gas. They heat water in a storage tank to keep it ready for use. When the current supply of hot water is used up, the tank refills and the new supply of water has to heat up before it can be used. Since they are powered by gas, they require venting.

Ultra low NOx natural gas water heaters produce the lowest amounts of nitrous oxide emissions of all our gas heaters.