We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 75 gal, 125,000 BTU - General Purpose Commercial Gas Water Heaters
RHEEM-RUUDGeneral Purpose Commercial Gas Water Heaters

RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 75 gal, 125,000 BTU

The RHEEM-RUUD Commercial Gas Water Heater (SKU 35Z887, MPN GNU75-125) is a general-purpose commercial gas water heater with a nominal tank capacity of 70 gal and a 125,000 BTU input. It operates on natural gas…

SKU 3G-OTH-452261

Brand
RHEEM-RUUD
Item
Commercial Gas Water Heater: Natural Gas, Low NOx, 75 gal, 125,000 BTU
Category
General Purpose Commercial Gas Water Heaters
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

RHEEM-RUUD
Manufacturer Part Number
GNU75-125
Type
Low NOx, 75 gal
Ht
65.5 in
BTU
125,000
Market
Commercial
Low NOx
Yes
Fuel Type
Natural Gas
Standards
CSA Certified
Sub-brand
Rheem Ruud
Vent Type
Standard
Ignition Type
Direct Spark to Pilot
Included Valves
Temperature and Pressure Relief
Display Sell UOM
EA
Low NOx Compliant
Includes California Low NOx Compliant Burner
Operating Voltage
120V AC
Included Valve Type
Drain
Recovery Rate @ Rise
101 gph @ 120°F
Vent Connection Size
5 in
Nominal Tank Capacity
70 gal
Water Connection Location
Side
Maximum Recovery Flow Rate
242 gph @ 40°F
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

RHEEM-RUUD Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The RHEEM-RUUD Commercial Gas Water Heater (SKU 35Z887, MPN GNU75-125) is a general-purpose commercial gas water heater with a nominal tank capacity of 70 gal and a 125,000 BTU input. It operates on natural gas, features a direct spark to pilot ignition, and includes a Low NOx compliant burner. The unit is CSA Certified, has a recovery rate of 101 gph @ 120°F and a maximum recovery flow rate of 242 gph @ 40°F, with a 5 in vent connection and 120V AC operating voltage.

Frequently Asked Questions

What is the RHEEM-RUUD GNU75-125 commercial gas water heater used for?

The RHEEM-RUUD GNU75-125 is a general-purpose commercial gas water heater designed for high-demand hot water applications in commercial facilities such as restaurants, hotels, and office buildings. It provides a 70 gal nominal tank capacity with a 125,000 BTU input and a recovery rate of 101 gph at 120°F, ensuring reliable hot water supply.

What are the specifications of the RHEEM-RUUD GNU75-125?

The RHEEM-RUUD GNU75-125 has a 70 gal nominal tank capacity, 125,000 BTU input, and operates on natural gas. It features a Low NOx compliant burner, direct spark to pilot ignition, and a 5 in vent connection. The unit is CSA Certified, requires 120V AC, and includes a temperature and pressure relief valve. Height is 65.5 in.

Where to buy the RHEEM-RUUD GNU75-125 worldwide?

3G Electric supplies the RHEEM-RUUD GNU75-125 commercial gas water heater to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this CSA Certified unit to commercial facilities globally.

How to install the RHEEM-RUUD GNU75-125 commercial gas water heater?

Installation of the RHEEM-RUUD GNU75-125 must follow local codes and the manufacturer's manual. Ensure proper venting with a 5 in connection, natural gas supply, and 120V AC power. The unit includes a temperature and pressure relief valve. For Low NOx compliance, verify combustion air supply. Always use a licensed professional for gas and electrical connections.

Used in

Common applications for RHEEM-RUUD
Hotel laundry facilities — Rheem-Ruud commercial gas water heaters (e.g., GNU76-200) for high-volume hot water supply
Restaurant kitchens — Rheem-Ruud point-of-use electric water heaters (e.g., EGSP20) for under-sink hot water
Industrial wash stations — Rheem-Ruud storage tanks (e.g., ST80) to buffer hot water demand
Office building break rooms — Rheem-Ruud compact electric water heaters (e.g., EGSP10 120V) for localized hot water
Commercial dishwashing — Rheem-Ruud gas water heaters (e.g., G82-156) for continuous hot water at 180°F sanitizing temperatures

RHEEM-RUUD Products

3G Electric supplies RHEEM-RUUD general purpose commercial gas water heaters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 76 gal, 199,900 BTU, 68.81 in Ht (MPN GNU76-200). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ANSI Z21.10.3; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 76 gal, 199,900 BTU, 68.81 in Ht (MPN GNU76-200). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ANSI Z21.10.3; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 72 gal, 250,000 BTU, 71.06 in Ht (MPN GN72-250A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: NC Compliant; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 72 gal, 250,000 BTU, 71.06 in Ht (MPN GN72-250A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: NC Compliant; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 399,900 BTU, 76 in Ht (MPN GNU100-400A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ASHRAE; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 399,900 BTU, 76 in Ht (MPN GNU100-400A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ASHRAE; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 199,900 BTU, 73.06 in Ht (MPN GNU100-200). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ASHRAE 90.1b-2001; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 199,900 BTU, 73.06 in Ht (MPN GNU100-200). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ASHRAE 90.1b-2001; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 270,000 BTU, 73.88 in Ht (MPN GN100-270A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ANSI; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 270,000 BTU, 73.88 in Ht (MPN GN100-270A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ANSI; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 72 gal, 300,000 BTU, 71 in Ht (MPN G72-300A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: UL Listed; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Front; Fuel Type: Natural Gas.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 72 gal, 300,000 BTU, 71 in Ht (MPN G72-300A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: UL Listed; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Front; Fuel Type: Natural Gas.

More from RHEEM-RUUD

View all RHEEM-RUUD parts
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, 85 gal, 399,900 BTU, 78.81 in Ht (MPN G85-400A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: AHRI Certified; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: No; Water Connection Location: Top; Fuel Type: Natural Gas.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, 85 gal, 399,900 BTU, 78.81 in Ht (MPN G85-400A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: AHRI Certified; Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: No; Water Connection Location: Top; Fuel Type: Natural Gas.
RHEEM-RUUD Commercial Gas Water Heater: Liquid Propane, 91 gal, 199,900 BTU, 76.31 in Ht (MPN G91-200LP). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: Canada CSA; Brand: RHEEM-RUUD; Low NOx: No; Water Connection Location: Front; Fuel Type: Liquid Propane; Included Valves: Temperature and Pressure Relief.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Liquid Propane, 91 gal, 199,900 BTU, 76.31 in Ht (MPN G91-200LP). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: Canada CSA; Brand: RHEEM-RUUD; Low NOx: No; Water Connection Location: Front; Fuel Type: Liquid Propane; Included Valves: Temperature and Pressure Relief.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 76,000 BTU, 69.63 in Ht (MPN G100-80N). Key specifications — Automatic Thermostat: Yes; Display Sell UOM: EA; Market: Commercial; Standards: Canada CSA; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Top; Fuel Type: Natural Gas.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 76,000 BTU, 69.63 in Ht (MPN G100-80N). Key specifications — Automatic Thermostat: Yes; Display Sell UOM: EA; Market: Commercial; Standards: Canada CSA; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Top; Fuel Type: Natural Gas.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 75 gal, 75,100 BTU, 64 in Ht (MPN G75-75N-3). Key specifications — Automatic Thermostat: Yes; Display Sell UOM: EA; Market: Commercial; Standards: US CSA (Star); Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 75 gal, 75,100 BTU, 64 in Ht (MPN G75-75N-3). Key specifications — Automatic Thermostat: Yes; Display Sell UOM: EA; Market: Commercial; Standards: US CSA (Star); Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 399,900 BTU, 76 in Ht (MPN GN100-400A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ANSI; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas; Included Valves: Drain.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, Low NOx, 100 gal, 399,900 BTU, 76 in Ht (MPN GN100-400A). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: ANSI; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side; Fuel Type: Natural Gas; Included Valves: Drain.
RHEEM-RUUD Commercial Gas Water Heater: Liquid Propane, Low NOx, 75 gal, 75,100 BTU, 64 in Ht (MPN G75-76LP). Key specifications — Automatic Thermostat: Yes; Display Sell UOM: EA; Market: Commercial; Standards: US CSA (Star); Sub-brand: gas water heater; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Liquid Propane, Low NOx, 75 gal, 75,100 BTU, 64 in Ht (MPN G75-76LP). Key specifications — Automatic Thermostat: Yes; Display Sell UOM: EA; Market: Commercial; Standards: US CSA (Star); Sub-brand: gas water heater; Brand: RHEEM-RUUD; Low NOx: Yes; Water Connection Location: Side.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, 35 gal, 199,900 BTU, 49.25 in Ht (MPN G37-200). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: UL Listed; Brand: RHEEM-RUUD; Low NOx: No; Water Connection Location: Front; Fuel Type: Natural Gas; Included Valves: Temperature and Pressure Relief.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, 35 gal, 199,900 BTU, 49.25 in Ht (MPN G37-200). Key specifications — Display Sell UOM: EA; Market: Commercial; Standards: UL Listed; Brand: RHEEM-RUUD; Low NOx: No; Water Connection Location: Front; Fuel Type: Natural Gas; Included Valves: Temperature and Pressure Relief.
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, 100 gal, 80,000 BTU, 69.63 in Ht (MPN G100-80). Key specifications — Automatic Thermostat: Yes; Display Sell UOM: EA; Market: Commercial; Standards: US CSA (Star); Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: No; Water Connection Location: Rear.
RHEEM-RUUD
RHEEM-RUUD Commercial Gas Water Heater: Natural Gas, 100 gal, 80,000 BTU, 69.63 in Ht (MPN G100-80). Key specifications — Automatic Thermostat: Yes; Display Sell UOM: EA; Market: Commercial; Standards: US CSA (Star); Sub-brand: Rheem Ruud; Brand: RHEEM-RUUD; Low NOx: No; Water Connection Location: Rear.