Choosing a commercial water heater is rarely a grab-and-go decision. You have to weigh upfront cost, fuel type, physical footprint, and how much hot water the business actually needs during peak hours. The four options here span a wide range of prices and conditions, from a used 50-gallon Rheem to a high-efficiency Rinnai hybrid. Each one addresses a different owner's constraints.
Quick Take
- Rheem E50A-9-G-1: A used commercial tank at the lowest listed price in this group.
- Rheem G75-75N-3: An open-box natural gas storage tank with a vented design.
- Rheem Triton GHE100SU-200: A high-output gas unit with Energy Star compliance.
- Rinnai CHS19980HCXiN: A new hybrid water heating system with Wi-Fi capability.
Listed Prices at a Glance
| Product | Listed Price | Price Bar |
|---|---|---|
| Rheem commercial water heater E50A-9-G-1 | USD 600.00 | |
| RHEEM Commercial Gas Water Heater - Natural Gas, G75-75N-3 | USD 1,000.00 | |
| RINNAI CHS19980HCXiN DDO 199K BTU H-Series Hybrid | USD 4,500.00 | |
| NEW Rheem Triton 199,000 BTU GHE100SU-200 | USD 5,000.00 |
Decision Matrix
| Model | Condition | Key Specification | Best Use |
|---|---|---|---|
| Rheem E50A-9-G-1 | Used | 50-gallon tank | Low-cost entry into a commercial tank |
| Rheem G75-75N-3 | Open box | Natural gas storage, vented | Replacing or installing a gas tank system |
| Rheem Triton GHE100SU-200 | Open box | 199,000 BTU, Energy Star compliant | High hot-water demand in a gas-heated space |
| Rinnai CHS19980HCXiN | New | Hybrid, 199,000 BTU, Wi-Fi | Efficiency-focused commercial operations |
Product Notes
Rheem commercial water heater E50A-9-G-1
This 50-gallon Rheem commercial unit is the lowest-price option in this comparison, and it's made in the United States. Used condition keeps the cost down but also means you're taking on a tank with previous service history. The listing shows a single unit with gallon-based capacity, so it's a straightforward tank-style heater for basic commercial hot-water needs. It doesn't list an efficiency rating, unlike the Energy Star compliant Triton or the Rinnai's 0.97 UEF. If your priority is keeping initial spend low, this is the most accessible choice.
RHEEM Commercial Gas Water Heater: Natural Gas, Serial # 0322356874/ G75-75N-3
The Rheem G75-75N-3 is a natural gas storage tank with a vented design, made in the United States. It comes in open-box condition with a one-year manufacturer warranty listed. For a business that already uses gas and wants a familiar tank system, this slots into that role. The open-box status is the main trade-off; you're not buying a sealed retail unit. It also arrives in a gray finish, though color probably won't matter much in a mechanical room.
NEW Rheem Triton 199,000 BTU GHE100SU-200 Natural Gas Commercial Water Heater
The Rheem Triton GHE100SU-200 delivers a 199,000 BTU heating rating and is Energy Star compliant, which makes it one of the most powerful options here. The title says NEW, and the unit has never had water in it, but the condition is listed as open box. There's a minor ding on the outside cover, which the listing says doesn't affect function. A vent and manual are included. If you need high output for a busy commercial setting, this is the strongest gas-powered choice.
RINNAI CHS19980HCXiN DDO 199K BTU 8, H-Series Hybrid commercial water heater
The Rinnai CHS19980HCXiN is the only new unit in the group, and it's a hybrid system with a maximum 199,000 BTU output. Its listed UEF of 0.97 is the highest efficiency number in this comparison, and it's also Wi-Fi capable. The newer technology and controls come with a higher listed price, and the 32-inch diameter means it needs more floor space than a standard tank. It's a good fit for a commercial space where efficiency and monitoring matter as much as raw capacity.
Final Recommendation
If you want to spend the least upfront, the used Rheem E50A-9-G-1 is the entry point. If you prefer a natural gas storage tank with a listed one-year warranty, the Rheem G75-75N-3 is the straightforward pick. For maximum gas-fired output, the Rheem Triton GHE100SU-200 stands out, even with its open-box condition and minor cosmetic ding. If you'd rather buy new and gain hybrid efficiency plus Wi-Fi, the Rinnai CHS19980HCXiN is the option that brings the most modern feature set. Choose based on which constraint hits your operation first: budget, fuel type, output, or efficiency.
