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Reviews
14 reviews for Rinnai RX180 High Efficiency Condensing Tankless Water Heater
Description
Rinnai RX180 High Efficiency Condensing Tankless Water Heater
The Rinnai RX180 High Efficiency Condensing Tankless Water Heater delivers continuous, on-demand hot water with exceptional energy efficiency. Its condensing technology recycles heat from exhaust gases, providing maximum efficiency and lowering energy costs compared to conventional tank water heaters.
This compact, wall-mounted model is perfect for residential or commercial applications requiring reliable hot water at high flow rates. With a modulating gas valve, it automatically adjusts heat output based on demand, ensuring stable water temperatures even when multiple faucets or showers are used simultaneously. Durable construction ensures long-lasting performance and minimal maintenance.
Benefits
Continuous Hot Water: Tankless design provides unlimited hot water on demand.
High Energy Efficiency: Condensing technology reduces energy consumption and utility costs.
Space-Saving Design: Wall-mounted and compact, ideal for tight spaces.
Precise Temperature Control: Modulating gas valve delivers consistent temperatures across multiple outlets.
Durable and Long-Lasting: Built with corrosion-resistant materials for extended service life.
Reduced Operating Costs: Optimized efficiency saves money on energy bills.
Key Highlights
Tankless On-Demand Water Heater
High-Efficiency Condensing Technology
Continuous Hot Water Supply
Modulating Gas Valve for Stable Temperature
Compact Wall-Mounted Design
Durable Construction for Long Service Life
Specification
| Specification | Details |
|---|---|
| Make | Rinnai |
| Model Number | RX180 |
| Type | High Efficiency Condensing Tankless Water Heater |
| Fuel Type | Natural Gas |
| Max Input | 180,000 BTU/hr |
| Energy Efficiency | Up to 95% Thermal Efficiency |
| Flow Rate | ~6.7 GPM at 35°F rise |
| Ignition | Direct Spark Ignition |
| Venting | Direct Vent / Sidewall or Roof |
| Modulation | Yes, modulating gas valve |
| Water Connections | 3/4″ NPT |
| Gas Connection | 3/4″ NPT |
| Dimensions (HxWxD) | 28″ × 18″ × 11″ |
| Weight (Approx.) | 105 lbs |
| Warranty | 12-Year Heat Exchanger / 5-Year Parts |









Lucas Martin –
After researching multiple options, I found this unit to be the most affordable with the best efficiency. The price was unbeatable, and the installation was smooth and quick. I’m already seeing savings on our energy bills, and the water heater works like a charm. Highly recommended for anyone looking for a budget-friendly, reliable solution.
Carla Stewart –
Great experience overall. The installation team arrived on time and completed the installation in no time. The water heater works wonderfully, providing hot water whenever we need it. The only reason I didn’t give 5 stars was due to a slight delay in delivery, but the customer support team was very helpful and kept me updated.
Matthew Richardson –
I did a lot of price comparison before purchasing, and this was by far the best deal I could find for a high-efficiency unit. On top of that, the installation was handled quickly by a professional team. The price was great, and the system has been working flawlessly.
Sarah Evans –
We’ve had this water heater for a few months now, and it’s been fantastic. The unit was installed quickly, and I love how it provides instant hot water without ever running out. The overall efficiency has significantly reduced our heating bills. We were pleasantly surprised by how affordable it was, especially given the energy savings!
David Nguyen –
The service was incredibly fast from start to finish. I called to inquire, and the next day the team arrived for installation. They were polite and professional, and the heater has been working perfectly ever since. My family is enjoying continuous hot water without worrying about running out.
Emily White –
I can’t believe how affordable the installation was compared to other quotes I received. The team was on time, did a clean and professional job, and explained everything I needed to know about my new water heater. Since installation, we’ve had no issues, and our energy bill has definitely gone down.
Michael Roberts –
The Rinnai RX180 has been a game-changer for us. The installation was seamless, and the team was very professional. It’s been a few weeks, and we’ve already noticed a drop in our energy usage. However, it took a couple of extra days for delivery, which was a minor inconvenience, but everything else was great!
Olivia Clark –
This water heater was the best investment we could’ve made. The installation team arrived on time and made sure everything was perfect. The unit works flawlessly, providing instant hot water without any of the issues we had with our old one. It’s also energy efficient, so we’re expecting savings in the long run.
Christopher Walker –
We had this unit installed last week, and the entire process was faster than I expected. The price was great, and the installation was quick and easy. The water heater works exactly as promised, and I’m already noticing lower energy bills. Definitely worth the investment!
Thomas Nguyen –
Fantastic upgrade for our home. Energy efficiency is noticeable and the system runs quietly. Very satisfied with the overall service.
Sandra Liu –
Fast response and quick installation. From the initial call to having hot water, everything was handled efficiently.
Michael Pelletier –
After comparing multiple companies, Smart Savings Canada offered the lowest price by far. No surprise charges and great quality work.
Aisha Khan –
The installation team was excellent—professional, courteous, and very knowledgeable. They completed the job quickly and explained everything clearly.
Kevin Morrison –
Very impressed with the performance. Hot water is instant and consistent. The whole process was smooth and stress-free.