Upgrade Your Hot Water Tank with
Rinnai Tankless Water Heater
There’s never been a better time to upgrade from your old hot water tank to the world’s best-selling Rinnai tankless water heater. For a limited time, enjoy $500 OFF your new tankless system plus 50% OFF a premium water treatment unit—the perfect way to protect your investment and maximize performance. Our certified Rinnai ACE Pro installers provide professional installation across Ontario, ensuring proper system sizing, warranty protection, and long-term energy savings for your home.
Find the Perfect System for Your Home
$500 OFF – Rinnai Rx160iN
- No long term contract – low monthly payments availables
- Standard tankless installation, removal & disposal of the existing water heater included
- No More Repair Bills: Extended 10 years parts and labor coverage available
- 9 Gallons Per minute hot water flow rate. 160k BTU/h. Supports 3-4 Fixtures
- Includes Rinnai Rx160iN maintenance valve kit
- Instant $500 off Rinnai RX160iN
$500 OFF – Rinnai Rx199iN
- No long term contract – low monthly payments available
- Standard tankless installation, removal & disposal of the existing water heater included
- No More Repair Bills: Extended 10 years parts and labor coverage available
- 11 Gallons Per minute hot water flow rate. 199k BTU/h. Supports 4-5 Fixtures
- Includes Rinnai Rx199iN maintenance valve kit
- Instant $500 off Rinnai RX199iN
$200 OFF – Rinnai RXP199iN
- Standard tankless installation, removal & disposal of the existing water heater included
- No More Repair Bills: Extended 10 years parts and labor coverage available
- 11 Gallons Per minute hot water flow rate. 199k BTU/h. Supports 4-5 Fixtures
- Includes Rinnai Rxp199iN maintenance valve kit
- Instant $200 off Rinnai RXP199iN
Rinnai Authorized Dealers – 100% System Sizing Accuracy Guaranteed
Investing in a Rinnai tankless water heater ensures reliable, energy-efficient hot water. As certified Rinnai ACE Pros, we provide professional installation to maintain your warranty and guarantee optimal performance. Our Application Engineering Center delivers accurate system sizing, pricing, and designs within 1 hour for smooth installation. Backed by our 100% sizing guarantee, we offer custom solutions and long-term energy savings.
SPEAK WITH A PRO50% Off Water Treatment System
- Save on energy by eliminating limescale on your water heater element
- Protect your expensive appliances from costly, premature failure
- Install it and forget it — zero electricity, zero chemicals, zero maintenance
- Enjoy cleaner, safer water with our 100% eco-friendly technology
- Get over a decade of peace of mind with our 12-year warranty
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50% Off On Water Treatment System
- ✔ Save on energy by eliminating limescale on your water heater element
- ✔ Protect your expensive appliances from costly, premature failure
- ✔ Install it and forget it — zero electricity, zero chemicals, zero maintenance
- ✔ Enjoy cleaner, safer water with our 100% eco-friendly technology
- ✔ Get over a decade of peace of mind with our 12-year warranty
Why homeowners are choosing HVAC Ontario
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Fast tankless repairs, Same-Day service, and certified installation
- Local Tankless Water Heater Repairs: Our local presence is key to our swift service. With technicians stationed near you, we ensure fast response times for any water heater repairs. Our service vehicles are stocked with a wide range of water heater parts, allowing us to address most issues on the first visit.
- Same-Day Service: Our professional team can install your new tankless water heater as soon as today. With local warehouses and technicians in Toronto, Durham, Mississauga, Brampton, and Hamilton, we ensure rapid and efficient service.
- Code Compliance: As certified installers, we are well-versed in local city codes and regulations. Our technical team guarantees that your tankless meets all necessary standards, avoiding potential legal and safety issues.
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Ontario’s Exclusive Rinnai Pro Council Member
At HVAC Ontario, we are proud to be a part of Rinnai’s Pro Council—a distinction held by only two companies in all of Canada. This prestigious role demonstrates our expertise and deep commitment to advancing Rinnai’s innovative tankless water heater technology.
Shaping the Future of Rinnai Products: Since 2019, we’ve collaborated directly with Rinnai’s manufacturing team as part of the Pro Council. This partnership allows us to influence product development, ensuring that Rinnai tankless water heaters are optimized for the unique needs of Ontario homeowners. From energy efficiency to performance in cold climates, our contributions are helping to shape the future of Rinnai products.
Certified Rinnai ACE Pro Installers: As Rinnai Advanced Certified Experts [ACE Pro] and authorized dealers, we ensure your Rinnai tankless water heater is professionally installed to meet all warranty requirements. This not only protects your investment but also guarantees top performance and reliability for years to come.
When you choose HVAC Ontario, you’re choosing a company that stands at the forefront of Rinnai’s innovation. Experience unmatched expertise, professional installation, and the peace of mind that comes from working with Ontario’s trusted Rinnai partner.
Contact us today to learn more about our Rinnai tankless water heaters and discover why we’re the top choice for homeowners across Ontario!
Speak with the Pro -
Affordable Tankless Water Heater Solutions: Buy, Finance, or Rent
- Buy tankless water heater: Our tankless water heaters range from $2199-$3999. We have multiple payment options to make your tankless water heater purchase easier.
- Finance Tankless Water Heater: Upgrade to a new tankless water heater for no upfront cost. Our monthly financing plans are flexible to manage the cost of your tankless water heater for as low as $39.99/month, plus enjoy 0% Interest financing for 12 months.
- Rent water heater: Don't want to buy? We also have a rental water heater option available with no upfront cost, 24/7/365 live customer support, and full coverage. Plus get first 12 months free.
- Exclusive Tankless Water Heater Offer: For a limited time, get up to $500 off on all new Rinnai tankless water heaters, plus get $100 mail-in rebate. Don't miss out.
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Frequently Asked Questions
Everything you need to know about buying a Rinnai tankless water heater.
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Should I rent or buy a Rinnai tankless water heater?
Buying is significantly more cost-effective than renting. A rented tankless water heater can cost over $10,000 over its lifespan due to escalating annual rental fees — often 3x the purchase price. When you buy through HVAC Ontario, you own the unit outright, benefit from a 10-year parts and 10-year labour warranty, and can pay it off with $0 down financing from $39/month with no penalty for early payoff. Rental contracts also complicate home sales.
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How much does a Rinnai tankless water heater cost in Ontario?
Rinnai tankless water heaters installed by HVAC Ontario range from $2,199 to $3,999 depending on the model. HVAC Ontario currently offers $500 off the RX160iN and RX199iN models. Financing from $39/month is available with $0 down. Call 1-888-705-7368 for an exact quote over the phone.
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What size of Rinnai tankless water heater do I need?
For most Ontario homes with 2–3 bathrooms, the Rinnai RX160iN (9 GPM, 160,000 BTU/h) is sufficient. For larger homes with 4–5 bathrooms or higher simultaneous demand, the RX199iN (11 GPM, 199,000 BTU/h) is recommended. As Rinnai ACE Pro installers, HVAC Ontario guarantees 100% accurate system sizing — a mis-sized unit is the most common and costly installation mistake.
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What is the difference between the Rinnai RX160iN, RX199iN, and RXP199iN?
The RX160iN delivers 9 GPM and is ideal for 3–4 simultaneous hot water fixtures. The RX199iN delivers 11 GPM and handles 4–5 fixtures, suited for larger homes. The RXP199iN is the condensing ultra-high efficiency version of the 199 series, achieving up to 96% thermal efficiency — it costs more upfront but delivers the lowest operating cost. HVAC Ontario installs all three and will recommend the right model for your home.
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What is a Rinnai ACE Pro installer and why does it matter?
Rinnai ACE Pro (Advanced Certified Expert) is Rinnai's highest installer certification, requiring factory training, ongoing education, and demonstrated expertise. HVAC Ontario is one of only two companies in Canada on Rinnai's Pro Council — the highest distinction Rinnai awards. This means your warranty is fully protected, system sizing is accurate, and installation meets all manufacturer standards.
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How long does Rinnai tankless water heater installation take?
Most Rinnai tankless installations take 2–4 hours for a standard replacement of an existing tank or tankless system. Complex installations involving new gas lines or venting may take longer. HVAC Ontario includes removal and disposal of your old water heater at no extra cost, and same-day installation is available across the GTA.
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Does hard water affect my Rinnai tankless water heater?
Yes. Hard water causes limescale buildup in the heat exchanger over time, reducing efficiency and potentially causing premature failure. HVAC Ontario offers a 50% off water treatment system with new tankless installations — a zero-maintenance, chemical-free solution that protects your investment and extends its lifespan. This is particularly important in GTA and Hamilton areas where water hardness is higher.