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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
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Description
Commercial Universal Heavy Duty 100 Gal. 399.9K BTU Low NOx (LN) Natural Gas Tank Water HeaterRheem Commercial Universal Gas Water Heaters are designed to fit into tight retrofit applications and have the features and capacity to meet heavy duty demands. The tighter the commercial retrofit, the more you will appreciate how the Universal's compact size and multiple water connections simplify installations. Please Note: This model requires a 120 Volt power source. California residents see Prop 65 WARNINGS California & Utah Residents (Utah
Rheem Commercial Universal Gas Water Heaters are designed to fit into tight retrofit applications and have the features and capacity to meet heavy duty demands. The tighter the commercial retrofit, the more you will appreciate how the Universal's compact size and multiple water connections simplify installations. Please Note: This model requires a 120-Volt power source.- California residents
- California & Utah Residents (Utah Effective 7/1/18): THIS WATER HEATER DOES NOT MEET ULTRA LOW NOX (ULN) EMISSIONS REQUIREMENTS. REGULATIONS PROHIBIT THE SALE, SHIPMENT OR INSTALLATION OF THIS WATER HEATER IN ANY AIR QUALITY DISTRICT THAT REQUIRES ULN WATER HEATERS.
- Texas Residents: this water heater model meets or exceeds Low NOx (LN) emissions requirements for all air quality management districts
- Space saver design: the short heights and narrow jacket diameters, plus the top, front and rear water inlets/outlets offer the ultimate in installation flexibility
- System sentinel LED diagnostic system verifies system operation sequence by sequence
- Strong tank design: universals proprietary steel formulation, patented multi-flue design, combined with two coats of porcelain enamel, results in a superior heat exchanger design
- Direct spark to pilot ignition system: Saves energy by igniting only when there is a call for heat
- Low profile automatic flue damper: low profile damper minimizes overall product height and heavy-duty vent hood supports are designed to withstand the rigors of installation
- Easy to service: factory installed full port, full flow brass drain valve allows for faster draining and servicing
- Multiple water connections simplify installation
- Built-in corrosion resistance: patented anode design for a long tank life
- Insulation: sag and moisture proof fiberglass insulation surrounds the storage tank and heavy mineral wool insulation surrounds the combustion chamber
- Gas control system: thermostat adjusts from 100°F to 180°F, 24-Volt combination gas valve includes main gas pressure regulation, on-off manual valve, 120/24-Volt transformer and high limit temperature cut-out
- Warranty: 3-year limited tank warranty
- Need a different configuration, no problem; our universal line offers water heaters in 35 Gal. to 100 Gal. models available in a range BTU/h in natural gas and liquid propane
- Call 1-855-400-2552 before noon for same-day installation service in most areas, or
Features
| Item Weight | 794 |
| Uniform Energy Factor | 0 |
| Returnable | 90-Day |
| BTU Rating | 399900 |
| Tank Lining Material | Glass |
| Commercial/Residential | Commercial |
| Application Type | Commercial |
| Tank Warranty | 3 Year |
| Wattage (watts) | 0 |
| Maximum Temperature (F) | 180 |
| Water Heater Profile | Tall |
| Product Weight (lb.) | 794 lb |
| Finish Family | Gray |
| Water Heater Features | Overheat Protection,Temperature Pressure Relief Valve |
| Minimum Temperature (F) | 70 °F |
| Indoor/Outdoor | Indoor |
| Fuel Type | Gas |
| Pack Size | 1 |
| Vent Type | Atmospheric |
| Recovery Rate at 90F Rise (gallons/hour) | 431 |
| Nominal Tank Capacity (gallons) | 100 |
| Household Size | 5+ |
| Product Height (in.) | 76 in |
| Product Width (in.) | 30.25 in |
| Tank Valve Size (in.) | 1 |
| Product Depth (in.) | 30.25 in |
| Water Connection Size (in.) | 1.5 |
| Part Warranty | 1 Year |
| Labor Warranty | No Warranty |
| Certifications and Listings | CSA Listed,UL Listed |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Very good quality comparable to OEM at a much more reasonable price point.
Size: (Pack of 1)
Last December we bought our first new car in 21 years and the first thing I did is stock up on cabin and engine air filters. I've got nothing against dealership OEM parts and pieces but what I do have an issue with is the prices. Luckily, we all have a bit of control over access to OEM quality parts and pieces at significantly more reasonable prices via Amazon. This filter and it's matching cabin filter are excellent in value and take less than 5 minutes to replace. Compare that to paying the hourly rate at your dealer plus the dealership retail price and you'll do what I did and stock up on these two filters. Definitely recommended.
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Reviewed in the United States on September 25, 2025
★★★★★ 4
It will fit a 2022 Subaru Outback
Size: (Pack of 1)
Higher quality than OEM item fit and arrived on time. This was for a 2023 Subaru Outback
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Reviewed in the United States on September 15, 2025
★★★★★ 5
High quality
Size: (Pack of 1)
Looks a lot nicer than the one that came with my Subaru Outback (OEM). Performs the same or better.
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Reviewed in the United States on March 20, 2026
★★★★★ 5
Perfect fit for my 2018 Civic—easy, affordable, and worth it
Size: 9.5" x 10.9" x 2.1"
I’ve bought this cabin air filter multiple times for my 2018 Honda Civic, and it’s consistently great quality. It fits perfectly and is super easy to install—takes just a few minutes to swap out, and I always do it myself. Way cheaper than going to a shop or dealership. The airflow is smooth, there’s no smell at all, and it keeps the inside of my car feeling clean and fresh. No weird odors, no dust blowing in—just a solid, dependable filter that does its job well. This is the only one I’ll keep buying.
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Reviewed in the United States on May 11, 2025
★★★★★ 5
Do it mayne
Size: 9.5" x 10.9" x 2.1"
Good quality and fit but find it funny that the instructions with the air flow are on the side. I assume that would be facing out and was annoyed when I tried to close and it didn’t fit. Probably should have read the directions. Still would recommend
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Reviewed in the United States on March 8, 2026