Rinnai Tankless Water Heater Installation, Replacement & Repair in Mississauga
Looking to upgrade your home’s hot water system with a Rinnai tankless water heater?
HVAC-GROUP provides professional Rinnai tankless water heater installation, replacement, repair, maintenance, and descaling services throughout Mississauga and surrounding areas.
Rinnai is one of the most recognized names in tankless water heating. Their latest RX Series combines high efficiency, advanced controls, built in smart technology, and endless hot water performance for modern homes.
Whether you’re replacing an aging water heater or building a new home, our licensed technicians can help you choose the correct Rinnai model based on your household’s hot water demand.
Rinnai Tankless Water Heater Installation in Mississauga
Professional installation 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.
What's Your Neighbors Are Saying About Us
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
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!!!
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.
Rinnai Tankless Water Heater Replacement
Many homeowners choose to replace older tank style water heaters because of:
- Rising energy costs
- Water heater leaks
- Insufficient hot water
- Aging equipment
- Renovations and additions
- Desire for improved efficiency
Our team can help determine whether the RX160IN or RX199IN is the best replacement for your home.
Rinnai Tankless Water Heater Repair Services
HVAC-GROUP provides professional Rinnai tankless water heater diagnostics and repair services throughout Mississauga.
Common Rinnai Problems We Repair
No Hot Water
Possible causes include:
- Ignition issues
- Gas supply problems
- Flow sensor faults
- Control board failures
Error Codes
We diagnose and repair common Rinnai error codes and performance issues.
Inconsistent Water Temperature
Possible causes include:
- Scale buildup
- Water flow restrictions
- Sensor problems
- Maintenance issues
Annual Maintenance & Descaling
Routine maintenance helps:
- Improve efficiency
- Extend equipment lifespan
- Reduce breakdowns
- Maintain manufacturer performance standards
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.
Benefits of Rinnai Tankless Technology
- Endless hot water on demand
- High efficiency condensing design
- ENERGY STAR® certified models
- Compact wall mounted installation
- Reduced energy consumption
- Longer lifespan than traditional tank water heaters
- Smart Wi-Fi connectivity
- Built in diagnostics
- Recirculation capability
- Indoor or outdoor installation flexibility
Many Mississauga homeowners upgrade to Rinnai tankless systems to eliminate hot water shortages while lowering utility costs.
Understanding the Rinnai RX Series
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.
Recirculation Capability
Selected installations can provide faster hot water delivery to fixtures throughout the home.
Smart Connect™
Allows technicians to connect through the Rinnai Central App for setup, diagnostics, and system registration.
High Efficiency Operation
The RX Series achieves efficiency ratings up to 0.98 UEF while delivering continuous hot water whenever needed.
Quick Flush™
Designed to simplify annual maintenance and descaling procedures.
Choose the Right Rinnai RX Series Model for Your Home
Rinnai RX160IN Tankless Water Heater
Best For:
- 1–2 bathroom homes
- Condominiums
- Small townhouses
- Families of 1–4 people
- Homes with moderate hot water demand
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.
Ideal Applications
- Condos
- Small detached homes
- Townhouses
- Retirement homes
- Couples and smaller families
For many homeowners with one or two bathrooms, the RX160IN provides more than enough hot water while keeping installation costs lower than larger models.
Rinnai RX199IN Tankless Water Heater
Best For:
- 3+ bathroom homes
- Large families
- Homes with soaker tubs
- Multiple simultaneous showers
- High demand households
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.
Ideal Applications
- Large detached homes
- Luxury homes
- Multi generational households
- Homes with multiple bathrooms
- Families using several fixtures simultaneously
If your household regularly runs two or three showers at once, fills large bathtubs, or uses multiple appliances simultaneously, the RX199IN is typically the recommended choice.
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
We calculate whether your home may use:
- Multiple showers
- Bathtubs
- Dishwashers
- Laundry equipment
- Kitchen faucets
At the same time.
Future Renovations
If you plan to add bathrooms, basement apartments, or larger tubs, we factor these upgrades into our recommendation.
HVAC-GROUP performs a complete sizing assessment before recommending a Rinnai model.
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.
L5G, L5H
L5M, L5N
L5L, L5M
L5J, L5K
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.
Contact HVAC-GROUP
Need help choosing between the Rinnai RX160IN and RX199IN?
HVAC-GROUP provides professional Rinnai tankless water heater installation, replacement, repair, and maintenance services throughout Mississauga.
Call 416-807-2752 to schedule an assessment or diagnostic service.