Rinnai Tankless Water Heater – Installation, Replacement & Repair in Mississauga
Hire HVAC-GROUP for trusted Rinnai tankless water heater service in Mississauga. Our factory-trained, licensed technicians back every installation with warranty-protected workmanship homeowners rely on.
Trusted Installation Experts
Reliable Rinnai Tankless Water Heater Installation in Mississauga
Professional water heater installation in Mississauga is essential to ensure safe operation, proper venting, and maximum efficiency.
Our Installation Services Include
- Removal of existing water heater
- Gas line verification
- Venting installation
- Condensate drain installation
- Water line connections
- Startup and commissioning
- Performance testing
- Manufacturer registration assistance
Every installation is completed according to Ontario code requirements and Rinnai specifications.
michael wickeler
11 months ago
HVAC GROUP punctual and very efficient at their job. Figured out the problem quickly and fixed the Air conditioner.
Erica Larry
11 months ago
Amazing service from Yuri! We will be using you again in the near future. Thank you again.
Max Peters
12 months ago
Yuri and team quickly diagnosed my A/C issue and had the system back and running, with a very quick response time. Would recommend to anyone.
Dave Neeb
12 months ago
Excellent and thorough, great pricing. Thanks again.
John Hamilton
12 months ago
The HVAC Group did a fantastic job restoring our broken AC . Quality professional workmanship at a fair price .We will definitely call them back next time .
Katie Ogiba
1 year ago
HVAC Group came recommended by a friend when our AC stopped working on a 38 degree day. We had called other services and either couldn't get through or everyone was booked. When I spoke to Yiri he said it was so busy they were booked until next week (which I expected as every other place said the same thing). But he stayed on the phone to ask a few questions about the unit. He was kind, and you can just tell when someone actually cares - he didn't have to talk me through the possible issues etc. He ended up sending someone out that evening who fixed it within 15 minutes. We are so appreciated of the service- both the actual work done and the customer care. Highly recommend. Thank you to both Yiris!
Andre
1 year ago
Great service - fast, knowledgeable, thoughtful, very professional! Helped me well and fast!
thariyor@gmail.com ariyo
1 year ago
HVAC Group responded quickly and had my noisy air conditioner fixed within a day. Their professionalism and customer-first approach really stood out. They go above and beyond—highly recommended!
Daniel Liu
1 year ago
HVAC group has been absolutely fantastic to help us replace our air conditioner. From diagnosing to replacement took only 2 days (since the replacement unit was in stock). This is especially appreciated as the weather was getting hot fast and I have a newborn baby that cries in the heat. Yura is extremely knowledgeable and Yuriy installed the unit professionally with no interruption and minimal noise to our house’s activities. Thank you for your help! HVAC group comes highly recommended and I’ll be reaching out to them for routine maintenance!
Pranav Kumar
1 year ago
Got my thermostat changed and replaced the AC too. The price point is completely trust worthy and the service highly professional!
Olena M
2 years ago
Amazing service, quick and clean replacement of the old water tank, we definitely recommend this team to anyone who would need installation or replacement
Daniel Campana
2 years ago
I had an issue with my Rheem furnace not heating, so I reached out to HVAC-group for assistance. The technician was quick to identify the problem as a faulty flame sensor. The service was prompt, efficient, and ultimately effective. I'm very pleased with their work and would highly recommend their services to anyone facing HVAC issues.
lakhbir phull
2 years ago
Excellent service, immediate response, reasonable price, very happy with their services.
Tina Obersnel
2 years ago
I highly recommend calling HVAC-GROUP for your maintenance and service needs. Yuriy was great. Quick to respond and resolve the issue. I am very happy with the outcome.
VIKKY
2 years ago
I was having problem with a tankless water heater here in edmonton !
I just googled about it and i found his contact number , and i got my problem solved , because i called him and he actually explained everything very clearly and amazingly! Thank you so much
My tankless water heater was showing E110 , i was unable to get that, but he told me that you need clean the air intake filter then i open the panel and did exactly what he told me to do. By that why i got my problem solved!
Thanks buddy
I just googled about it and i found his contact number , and i got my problem solved , because i called him and he actually explained everything very clearly and amazingly! Thank you so much
My tankless water heater was showing E110 , i was unable to get that, but he told me that you need clean the air intake filter then i open the panel and did exactly what he told me to do. By that why i got my problem solved!
Thanks buddy
Stan Ivanov
3 years ago
I came from vacation to a broken furnace and a cold house. I called HVAC group late at night and they were able to send someone the next morning.
Technician was very professional, found that I had an igniter problem, had a spare part with him and solved the problem within an hour.
Reasonable pricing and very professional. Highly recommended!!!
Technician was very professional, found that I had an igniter problem, had a spare part with him and solved the problem within an hour.
Reasonable pricing and very professional. Highly recommended!!!
Ingrid Turner
3 years ago
Yuri is a true professional and is a very knowledgeable expert about furnaces.
I called him for advice when another well known Hvac company wrongly diagnosed my Trane furnace blower noise and told me I needed to undergo a $1500 repair. Yuri quickly assessed the problem and voila no more blower motor problems. All for $140!!
Thank you Yuri! I highly recommend your service, honesty and expertise.
I called him for advice when another well known Hvac company wrongly diagnosed my Trane furnace blower noise and told me I needed to undergo a $1500 repair. Yuri quickly assessed the problem and voila no more blower motor problems. All for $140!!
Thank you Yuri! I highly recommend your service, honesty and expertise.
Anisha Mathews
3 years ago
Yuriy was very informative and helpful in selecting and installing our new furnace. His prices are very reasonable and the work was completed on time. He was also helpful in setting up our thermostat. I highly recommend his services!
Marah Di Nola
3 years ago
Exceptional customer service, immediate response by phone & text, professional workmanship!! Clean respectful, very impressed with the workmanship. Thank you once again. Highly recommend for HVAC, water heater replacement. Answered all my queries without hesitation or reservation. Will definitely 💯 use again!!
Fast Reliable Repairs
Our Efficient Rinnai Tankless Water Heater Repair Services in Mississauga
HVAC-GROUP provides professional Rinnai tankless water heater diagnostics and repair services throughout Mississauga.
No Hot Water
Possible causes include:
- Ignition issues
- Gas supply problems
- Flow sensor faults
- Control board failures
Water Not Hot Enough
Possible causes include:
- Undersized unit for demand
- Sediment or scale buildup
- Partially clogged inlet filter
- Incorrect temperature setting
Fluctuating Water Temperature
Possible causes include:
- Cold water sandwich effect
- Low or uneven gas pressure
- Mineral buildup on heat exchanger
- Failing flow sensor
Rinnai Error Codes Displayed
Possible causes include:
- Ignition or flame failure
- Blocked exhaust or air intake
- Overheating components
- Internal sensor faults
Water Heater Leaking
Possible causes include:
- Loose or corroded connections
- Cracked heat exchanger
- Failed internal gasket
- Excess condensation buildup
Low Water Pressure
Possible causes include:
- Clogged water line filter
- Scale buildup inside unit
- Partially closed valves
- Kinked or blocked plumbing
Unit Not Igniting
Possible causes include:
- No gas supply to unit
- Faulty igniter or electrode
- Dirty flame rod
- Tripped safety lockout
Strange Noises From Unit
Possible causes include:
- Scale or sediment buildup
- Fan or blower obstruction
- Restricted gas flow
- Loose internal components
Having a HVAC problem? We’ll FIX it today!
We’re available 24/7 to restore your comfort. Call now for same-day service!
Why Choose a Rinnai Tankless Water Heater?
Traditional water heaters continuously heat and store water in a tank, even when hot water is not being used.
Rinnai tankless water heaters heat water only when a fixture is opened, reducing energy waste while providing a continuous supply of hot water.
Perfect RX Selection
Choose the Right Rinnai RX Series Model for Your Home
Rinnai RX160IN Tankless Water Heater
The Rinnai RX160IN is a high-efficiency condensing tankless water heater capable of delivering up to approximately 9 GPM under ideal conditions. It offers excellent performance for smaller households while maintaining outstanding efficiency.
Best For:
- 1–2 bathroom homes
- Condominiums
- Small townhouses
- Families of 1–4 people
- Homes with moderate hot water demand
Ideal Applications
- Condos
- Small detached homes
- Townhouses
- Retirement homes
- Couples and smaller families
Rinnai RX199IN Tankless Water Heater
The Rinnai RX199IN is the largest residential model in the RX Series lineup. It delivers up to approximately 11.1 GPM and is designed for homes with significant hot water requirements.
Best For:
- 3+ bathroom homes
- Large families
- Homes with soaker tubs
- Multiple simultaneous showers
- High demand households
Ideal Applications
- Large detached homes
- Luxury homes
- Multi generational households
- Homes with multiple bathrooms
- Families using several fixtures simultaneously
Rinnai RX130IN Tankless Water Heater
The Rinnai RX130IN is a high-efficiency condensing tankless water heater that delivers up to approximately 7 GPM under ideal conditions. It suits smaller homes and lighter hot water demands while keeping energy use low.
Best For:
- 1 bathroom homes
- Apartments and condos
- Small townhouses
- Individuals and couples
- Homes with light hot water demand
Ideal Applications
- Apartments
- Studio and one-bedroom condos
- Small townhouses
- Cottages and seasonal homes
- Singles and couples
Rinnai RX180IN Tankless Water Heater
The Rinnai RX180IN is a mid-range condensing tankless water heater that delivers up to approximately 10 GPM under ideal conditions. It balances strong capacity with high efficiency for growing households.
Best For:
- 2-3 bathroom homes
- Mid-sized detached homes
- Larger townhouses
- Families of 3-5 people
- Homes with moderate to high hot water demand
Ideal Applications
- Mid-sized detached homes
- Multi-storey townhouses
- Growing families
- Homes with two full bathrooms
- Households running two fixtures at once
Qulaity Brands We Work With
From Carrier to Trane – The Best AC Brands We Work With
Smart Comfort Built
Premium Features and Smart Technology Built for Lasting Comfort
The Rinnai RX Series is designed to provide maximum efficiency, comfort, and reliability.
These advanced condensing tankless water heaters feature:
Smart Sense™ Technology
Automatically adapts combustion settings for optimal performance and efficiency.
Smart Connect™
Allows technicians to connect through the Rinnai Central App for setup, diagnostics, and system registration.
Quick Flush™
Designed to simplify annual water heater maintenance and descaling procedures.
Recirculation Capability
Selected water heater installations can provide faster hot water delivery to fixtures throughout the home.
High Efficiency Operation
The RX Series achieves efficiency ratings up to 0.98 UEF while delivering continuous hot water whenever needed.
Which Rinnai Tankless Water Heater Size Do I Need?
Proper sizing is critical for tankless water heater performance.
Choosing the correct model depends on:
Number of Bathrooms
The more bathrooms your home has, the greater the potential hot water demand.
Family Size
A family of six typically requires more hot water capacity than a family of two.
Simultaneous Fixture Usage
Simultaneous Fixture Usage
Running several fixtures at once, like a shower and dishwasher together, raises your peak hot water demand.
Future Renovations
If you plan to add bathrooms, basement apartments, or larger tubs, we factor these upgrades into our recommendation.
Schedule Your Rinnai Tankless Water Heater Service in Mississauga Today
Need help choosing between the Rinnai RX160IN and RX199IN?
HVAC-GROUP provides professional Rinnai tankless water heater repair, replacement, installation, and maintenance services throughout Mississauga.
Call 416-807-2752 to schedule an assessment or diagnostic service.
Comfort Made Easy
Real Results from HVAC-Group Inc
Stay Warm, Always
Emergency Services in Mississauga – 24/7 Help
No heat? System down in the dead of winter? We provide round-the-clock repairs for ignitor failures, gas valve issues, cracked heat exchangers, and more. If your furnace’s toast, we’ll quote a fair furnace replacement cost and get it done right away.
Why Homeowners in Mississauga Choose HVAC-GROUP
HVAC-GROUP provides expert tankless water heater services backed by years of experience.
What You Can Expect
- Licensed and insured technicians
- Professional installations
- Accurate equipment sizing
- Fast repair service
- Transparent pricing
- Manufacturer recommended procedures
- Ongoing maintenance support
We focus on selecting the right equipment for your household’s actual hot water demand instead of simply recommending the largest unit available.
Quality First HVAC Services Just A Call Away!
Business Hours
Monday to Friday: 8 a.m.–9 p.m.
Saturday and Sunday: 9 a.m.–2 p.m.
Area We Serve in Mississauga
HVAC-Group Inc. has been servicing Mississauga areas for more than 20 year.
Frequently Asked Questions
Yes. Rinnai is one of the most respected tankless water heater manufacturers in North America and is known for reliability, efficiency, and advanced technology.
For many families of four with two bathrooms, the RX160IN provides excellent performance. Larger homes may benefit from the RX199IN.
Yes. Both models are designed for simultaneous hot water usage, with the RX199IN providing the highest capacity.
The primary difference is hot water output. The RX160IN provides up to approximately 9 GPM, while the RX199IN can provide up to approximately 11.1 GPM under ideal conditions.
With proper installation and annual maintenance, a Rinnai tankless water heater can often last 15–20 years or longer.
Yes. Annual flushing and maintenance are recommended to maximize efficiency, performance, and longevity.
Installation costs vary depending on venting, gas piping, drainage requirements, and the selected model. HVAC-GROUP can provide a detailed estimate based on your home’s requirements.