Rinnai RXP160 Tankless Water Heater, Recirculation Pump Built-In
Upgrade to the Rinnai RXP160 Condensing Tankless Water Heater, the perfect balance of efficiency and power for medium-sized homes. Offered exclusively by 4 Most Energy, this package includes professional customized installation throughout the Greater Toronto Area and Southern Ontario.
Why the RXP160?
High Performance: Delivers 160,000 BTU and up to 9.0 GPM of endless hot water, perfect for households with 2–3 bathrooms.
Built-in Intelligence: Features the Smart-Circ™ Intelligent Recirculation pump that learns your usage patterns to deliver hot water faster and reduce waste.
Maximum Efficiency: Boasts a 0.97 UEF (Uniform Energy Factor), meeting Energy Star® standards to significantly lower your gas bills compared to traditional tanks.
Compact Design: The "suitcase-sized" wall-mount unit frees up valuable floor space in your utility room.
Versatile Venting: Our technicians can customize the setup for indoor or outdoor venting to suit your home's layout.
| Warranty – Heat Exchanger | 15 Years / 12,000 hours | |
| Warranty – Parts | 5 Years | |
| Warranty – Labour (4Most Energy) | 1 Year (Extendable up to 10 Years) | |
Check Your Home’s Compatibility & Installation Price
No hidden fees. Just accurate math based on your home’s specs.
Never Wait for Hot Water Again
Experience the convenience of Smart-Circ™ Intelligent Recirculation™ — built directly into Rinnai RXP tankless models. Your tankless system learns your household’s hot-water usage patterns and automatically circulates warm water through your plumbing, giving you faster hot water when you need it.
No dedicated return line? No problem.
A simple thermal bypass valve added to your cold-water line enables full recirculation in homes without a return loop. Once installed, the system runs automatically using your learned schedule for maximum comfort and efficiency.
Why Install the Rinnai RXiN with 4Most Energy?
| Specification | RXP199iN | RXP160iN | |
|---|---|---|---|
| Heating Capacity (BTU) | 199,000 BTU | 160,000 BTU | |
| Maximum Flow Rate | 11.1 GPM | 9.0 GPM | |
| Built-In Recirculation Pump | Yes | Yes | |
| Fuel Type | Natural Gas | ||
| Efficiency (UEF) | 0.98 (Super High-Efficiency) | 0.97 (High-Efficiency) | |
| Energy Star | Yes | Yes | |
| Venting Type | Direct Vent | ||
| Wi-Fi Capable | Yes (Optional module) | ||
| Dimensions (H × W × D) | 30.1" × 18.5" × 11.4" | ||
| Weight | ≈ 58 lbs | ||
| Warranty – Heat Exchanger | 15 Years / 12,000 hours | ||
| Warranty – Parts | 5 Years | ||
| Warranty – Labour (4Most Energy) | 1 Year (Extendable up to 10 Years) | ||
Is the RXP160iN Right for Your Home?
✔ Ideal For:
Homes with 1–2 bathrooms
Small to medium families
Hot water delays in sinks or showers
Upgrading from a 40–50 gallon tank
Townhomes, semis, small detached homes
Homes that want recirculation without extra plumbing
✔ Not Ideal For:
3+ bathroom homes
Simultaneous shower + shower + laundry use
(For those homes, the RXP199iN is a better fit.)
| Step | Details |
|---|---|
| 1. Home & System Check | Proper sizing based on bathrooms, fixtures, gas line capacity, venting, and plumbing. Ensures the right tankless model for your home. |
| 2. Removal of Old Equipment | Safe disconnection, draining, removal, and eco-friendly disposal of your old tank or tankless water heater. |
| 3. Install & Mount the New Rinnai | Wall prep, mounting brackets, clearance verification, and setup for optimal servicing and performance. |
| 4. Gas, Venting & Condensate | Installation of new PVC/CPVC/SS venting, gas line upgrades if needed, fresh air setup, and proper condensate drain with neutralizer. |
| 5. Water Lines & Recirculation Setup | New isolation valves, clean hot/cold connections, and recirculation configuration for faster hot water. |
| 6. Full Testing & Commissioning | Gas/water leak check, startup diagnostics, combustion analysis, flow rate adjustment, and temperature calibration. |
| 7. Cleanup, Training & Warranty Registration | Work area cleaned, old equipment removed, homeowner training completed, and warranty registered under your name. |
Advanced Comfort Expert · Rinnai ACE PRO
Rinnai Factory Authorized Service
As a premier member of the official Rinnai PRO Network, our team is factory-trained and ACE-certified to provide the highest level of expertise available in the industry.
Whether you're looking for a new tankless installation or elite maintenance for your current home heating solutions, we ensure your system operates at peak reliability.
Why Hire an Rinnai ACE PRO?
Hiring a certified Advanced Comfort Expert means you are choosing a technician vetted for their skill, knowledge, and commitment to the Rinnai standard.
Extended Service Plans
We utilize advanced tools like the Rinnai Central™ App for system setup, precision tuning, and remote system monitoring.
Expert Diagnostics
We utilize advanced tools like the Rinnai Central™ App to ensure accurate system setup, precision tuning, and remote system monitoring.
ACE PRO Expertise
As Advanced Comfort Experts, we ensure your system is perfectly sized for consistent hot water and maximum energy savings.
Rinnai RXP160iN Tankless FAQs
Will the Rinnai RXP160 provide enough hot water for my home?
Yes. The Rinnai RXP160 produces up to 9.0 Gallons Per Minute (GPM), which is typically sufficient for a home with up to 2 bathrooms in Ontario running simultaneously. As a Rinnai Pro Installer, 4Most Energy ensures this unit is correctly sized for your specific home to deliver 160,000 BTUs of power, ensuring you never run out of hot water—even when the dishwasher and shower are running at the same time.
What is included in the "Standard Installation" price?
Our standard package covers the complete replacement of a similar unit. This includes:
Disconnecting and disposing of your old water heater.
Mounting the new Rinnai RXP160.
Connecting to existing gas, water, and electrical lines (within 5 feet).
Standard venting connection.
Why do I need an "Installation Verification" for the estimate and before installation?
Every home in the Greater Toronto Area is different. Older homes in Toronto or Hamilton may have smaller gas lines (1/2") or specific venting challenges. As certified Rinnai Pro Installers, we follow strict manufacturer guidelines to verify these needs before installation day, protecting you from surprise costs and ensuring your warranty remains valid.
Can I install this unit with my existing gas line?
This depends on the total BTU load of your other appliances. As Rinnai Pro experts, we calculate the precise load during our verification step to guarantee safety and efficiency.
How does the "Built-in Recirculation" work in RXP160iN?
The RXP160 features a built-in pump and Smart-Circ™ Intelligent Recirculation, which "learns" your usage patterns to circulate hot water in advance. 4Most Energy Rinnai Pros are trained to configure this system correctly so you get near-instant hot water without the wait.
Do I need extra parts to use the recirculation feature?
Yes. If you do not have a dedicated hot water return line, we must install a Thermal Bypass Valve (Crossover Valve) under your furthest sink. Additionally, we strongly recommend installing an Expansion Tank to prevent "water hammer" (banging pipes). Our Pro Installers will verify your plumbing layout and quote these specific parts accurately.
Does Rinnai RXP tankless unit need maintenance?
A: Yes. Although it is a very low maintenance unit, we do recommend regular maintenance for safety and performance.
Annual Safety Check ($120–$200): Our Rinnai Pro technicians perform a comprehensive check-up every year to inspect safety features, check the vent and drain systems, and perform a gas leak test.
Descaling Service ($300–$400): You do not need to descale every year. We recommend a full descaling every 5 years to flush out mineral buildup and restore efficiency
Why do I need a "Rinnai Pro Installer"?
Rinnai strongly recommends professional installation to guarantee safety, performance, and warranty validity. As an authorized Rinnai Pro, we offer benefits that a general handyman or uncertified plumber cannot:
Exclusive Warranty Extension: Standard labor warranties are typically 1 year. As a Rinnai Pro, 4Most Energy can register your product (within 90 days) to upgrade your labor coverage to 5 years (subject to Rinnai's terms).
Factory Training & Expertise: Our technicians complete rigorous Rinnai training (Level II & III) to master sizing, venting, and complex parameter settings. This ensures your unit is calibrated perfectly for Ontario's cold groundwater and altitude, preventing early failure.
Safety & Code Compliance: Tankless units require precise gas line sizing and venting clearance. We ensure every installation meets TSSA (Technical Standards and Safety Authority) and Ontario Building Code regulations to keep your family safe from CO hazards.
Priority Support: If an issue ever arises, Rinnai Pros have access to dedicated advanced technical support lines, ensuring faster diagnostics and repairs than non-certified installers.
Why should I trust 4Most Energy for my Rinnai tankless installation?
No Outsourcing: You work directly with our licensed experts, not a sales call center.
Local Stock: We carry parts and units locally for faster service in the GTA.
Comprehensive Quotes: We provide detailed, all-inclusive estimates that cover the equipment, installation, taxes, warranty registration, and disposal. No hidden fees, and backed by our 30-Day Customer Satisfaction Guarantee.
Transparent Pricing: We verify your home first so you get a clear, final price with no surprise fees.
How is the warranty with 4Most Energy?
When you choose us, you get:
15-Year Manufacturer Warranty on Heat Exchanger.
5-Year Manufacturer Warranty on Parts.
1-Year Labour Warranty from 4Most Energy (Standard).
Bonus: We register your unit with Rinnai to potentially extend labour coverage up to 5 years.
Do 4Most Energy offer financing Rinnai Tankless?
Yes. We offer flexible financing plans (such as our "4Most Smart Pay" program) to help you upgrade without a large upfront cost. We also work with third-party lenders and can assist with eligible government programs like the Canada Greener Homes Loan. Ask our team for current rates and zero-interest offers!
How can I get a promotion or discounted price on a Rinnai Tankless?
Rinnai is a high-demand best-seller in Ontario, but at 4Most Energy, we still offer several ways to save:
Bundle & Save: Get a discount when you install a Rinnai tankless unit together with a furnace or heat pump.
4Most Smart Pay Financing: Ask about our current "4Most Smart Pay" promotions, which may include zero-interest periods or deferred payments.
Seasonal Offers: Check our "Promotions" page or ask our expert for seasonal discounts on Rinnai units.
Do you offer emergency services?
Yes. We provide 24/7 emergency support for "no heat" or "no hot water" situations across the Greater Toronto Area. If your system fails in the middle of winter, our certified technicians are on call to get you back up and running quickly.
Where do you provide installation?
As a premier Rinnai Pro Installer in the region, we provide expert verification and installation across Southern Ontario:
Greater Toronto Area: Toronto, Mississauga, Brampton, Markham, Vaughan, Richmond Hill, Aurora, Newmarket, Scarborough.
Extended Service Area: Stouffville, Oshawa, Barrie, Orangeville, Hamilton, St. Catharines, Guelph, Kitchener.
Tankless Water Heater & Boiler Service Area
Greater Toronto Area (GTA) and surrounding regions
Toronto, Markham, Richmond Hill, Vaughan, Aurora, Newmarket, Scarborough, Brampton, and Mississauga.
Extended Service Area: Stouffville, Oshawa, Barrie, Orangeville, Hamilton, St. Catharines, Guelph, Kitchener.
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