Upgrade Your Home Heating with
Rinnai I-Series Plus Combi Boiler in Cornwall
Experience the ultimate in home comfort with a Rinnai I-Series Plus combi boiler—combining instant hot water and reliable heating in one efficient unit. For a limited time, enjoy $1,000 OFF your new combi boiler system. Our certified Rinnai ACE Pro installers provide professional installation across Cornwall, ensuring proper system sizing, warranty protection, and long-term energy savings for your home.
Find the Perfect Combi Boiler for Your Home
$1,000 OFF – Rinnai IP90199
- No long-term contract – low monthly payments available
- Professional installation, removal & disposal of old boiler included
- No More Repair Bills : Upto 10 year warranty available
- 90,000 BTU/h – Ideal for 2-3 bathroom homes with radiators or radiant heating
- Space-saving design – No storage tank required, instant hot water and heating
- Instant $1,000 off Rinnai IP90199
$1,000 OFF – Rinnai IP120199
- No long-term contract – low monthly payments available
- Professional installation, removal & disposal of old boiler included
- No More Repair Bills : Upto 10 year warranty available
- 120,000 BTU/h – Perfect for 3-4 bathroom homes with radiators or radiant heating
- Multi-zone heating support – Control temperature independently in multiple rooms
- Instant $1,000 off Rinnai IP120199
$1,000 OFF – Rinnai IP150199
- Professional installation, removal & disposal of old boiler included
- No More Repair Bills : Upto 10 year warranty available
- 150,000 BTU/h – Designed for 4+ bathroom homes and complex heating systems
- Advanced multi-zone control – Manage heating in up to 8 independent zones
- Condensing high efficiency – Up to 95% thermal efficiency, lowest operating costs
- Instant $1,000 off Rinnai IP150199
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 buildup on your combi boiler heat exchanger
- Protect your expensive boiler system 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 combi boiler heat exchanger
- ✔ Protect your expensive boiler 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 in Cornwall are Choosing HVAC Ontario for Combi Boilers
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Fast Combi Boiler Repairs, Same-Day Service, and Certified Installation
- Local Combi Boiler Repairs: Our local presence is key to our swift service. With technicians stationed throughout Cornwall, we ensure fast response times for any combi boiler repairs. Our service vehicles are stocked with a wide range of combi boiler parts and components, allowing us to address most issues on the first visit.
- Same-Day Service: Our professional team can install your new Rinnai combi boiler as soon as today. With local warehouses and technicians in Cornwall, 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 combi boiler installation 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 combi boiler 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 combi boilers are optimized for the unique needs of Cornwall 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 combi boiler 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 I-Series Plus combi boilers and discover why we're the top choice for homeowners across Cornwall!
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Affordable Combi Boiler Solutions: Buy or Finance
- Buy Combi Boiler: Our Rinnai I-Series Plus combi boilers range from $5,499-$8,999. We have multiple payment options to make your combi boiler purchase easier.
- Finance Combi Boiler: Upgrade to a new Rinnai combi boiler for no upfront cost. Our monthly financing plans are flexible to manage the cost of your combi boiler for as low as $99/month, plus enjoy 0% Interest financing for 12 months.
- Exclusive Combi Boiler Offer: For a limited time, get up to $1,000 off on all new Rinnai I-Series Plus combi boilers, plus get rebates available through government programs. Don't miss out.
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Frequently Asked Questions About Combi Boilers in Cornwall
Everything you need to know about buying a Rinnai I-Series Plus combi boiler for your home.
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What is a combi boiler and how does it work?
A combi (combination) boiler is a high-efficiency water heater and central heating system combined in one compact unit. Unlike traditional systems with separate hot water tanks and storage cylinders, a combi boiler heats water directly from the main water supply, providing instant hot water on demand for taps, showers, and radiators. It also supplies heating to radiators, underfloor heating systems, and air handlers throughout your home—all from a single unit. This space-saving design eliminates the need for separate tanks and cylinders, making it ideal for homes with limited space while delivering superior energy efficiency.
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How much does a Rinnai combi boiler cost in Cornwall?
Rinnai I-Series Plus combi boilers installed by HVAC Ontario in Cornwall range from $5,499 to $8,999 depending on the model and heating complexity. HVAC Ontario currently offers $1,000 off all three models. Financing from $99/month is available with $0 down. For an exact quote tailored to your home's heating needs, call 1-888-705-7368 and speak with one of our combi boiler experts.
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What size of Rinnai combi boiler do I need?
System sizing depends on your home's square footage, number of bathrooms, heating zones, and hot water demand. The Rinnai IP90199 (90,000 BTU/h) suits 2-3 bathroom homes with moderate heating needs. The IP120199 (120,000 BTU/h) is ideal for 3-4 bathroom homes with multi-zone heating. The IP150199 (150,000 BTU/h) handles 4+ bathroom homes and complex heating systems with multiple zones. 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 are the advantages of a Rinnai combi boiler?
Rinnai I-Series Plus combi boilers offer numerous advantages:
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Space-saving: No need for separate hot water tanks, storage cylinders, or cold water storage—one compact unit handles all heating and hot water needs.
Energy-efficient: Hot water and heating are provided on demand, eliminating energy waste from storing and re-heating water in large tanks. Condensing models achieve up to 95% thermal efficiency.
Lower installation cost: Fewer components and simpler venting requirements reduce installation time and cost compared to traditional systems.
Instant hot water: Provides immediate hot water at every tap without waiting for a tank to heat up.
Multi-zone heating: Independent temperature control in different rooms or zones for personalized comfort and additional energy savings.
Reliability: Rinnai's proven technology with 12-year parts and 10-year labor warranty ensures years of trouble-free operation. -
What is the difference between the Rinnai IP90199, IP120199, and IP150199?
Rinnai IP90199 (90,000 BTU/h): Entry-level model ideal for 2-3 bathroom homes with moderate heating demands and single or dual heating zones.
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Rinnai IP120199 (120,000 BTU/h): Mid-range model designed for 3-4 bathroom homes with higher hot water demand and multi-zone heating control supporting up to 4 zones.
Rinnai IP150199 (150,000 BTU/h): Premium condensing model for 4+ bathroom homes and complex heating systems with advanced multi-zone capability (up to 8 zones), achieving the highest thermal efficiency at up to 95%.
HVAC Ontario installs all three models and will recommend the perfect unit for your home's specific heating and hot water requirements. -
How long does Rinnai combi boiler installation take?
Most Rinnai combi boiler installations take 4–6 hours for a standard replacement of an existing heating system. Complex installations involving new gas lines, venting modifications, or multi-zone heating setup may take longer. HVAC Ontario includes removal and disposal of your old boiler at no extra cost, and same-day installation is available across Cornwall and surrounding areas.
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Does hard water affect my Rinnai combi boiler?
Yes. Hard water causes limescale buildup in the combi boiler's heat exchanger over time, reducing efficiency and potentially causing premature failure. HVAC Ontario offers a 50% off water treatment system with new combi boiler installations — a zero-maintenance, chemical-free solution that protects your investment and extends its lifespan. This is particularly important in Cornwall and surrounding areas where water hardness is higher.
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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 in combi boiler installation and service. 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, installation meets all manufacturer standards, and you receive expert support throughout your combi boiler's lifespan.