Rinnai Water Heater Contractor in the GTA
Certified Rinnai tankless water heater contractor serving Etobicoke, Mississauga, and the GTA. TSSA licensed technicians, upfront pricing, and up to 12-year warranty on every installation.
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Why Rinnai Is the Tankless Leader
Rinnai Corporation has been manufacturing gas appliances since 1920 and is widely recognized as one of the world's leading tankless water heater brands. Their product range spans from straightforward non-condensing units to the flagship Sensei RXP condensing series, which achieves up to 0.96 UEF and includes a built-in recirculation pump for near-instant hot water delivery throughout the home. Rinnai is the number-one selling brand of gas tankless water heaters in North America, and their equipment is backed by one of the strongest warranties in the industry: up to 12 years on the heat exchanger.
Switching from a conventional tank water heater to a Rinnai tankless unit delivers two primary benefits for GTA homeowners. First, you eliminate standby heat loss: a tank unit keeps 40 to 60 gallons of water hot around the clock, consuming energy even when no hot water is being used. A Rinnai unit heats water only on demand, which typically reduces water heating costs by 20 to 30 percent. Second, you get an endless supply of hot water: no more cold showers when the tank runs out during back-to-back use.
The trade-off is a higher upfront cost and the need for proper sizing and installation by a licensed contractor. An undersized Rinnai unit will struggle to meet peak demand in larger households. Beyond HVAC technicians are trained on the full Rinnai product range and size every installation to your home's actual hot water demand: not just the number of bathrooms, but your household's usage patterns and the incoming water temperature in your area.
Authorized Rinnai Contractor
Serving Etobicoke, Mississauga & the GTA
Up to 0.96 UEF
Highest Rinnai efficiency rating
12-Year Warranty
Heat exchanger with registration
Endless Hot Water
On-demand heating, no tank limits
20+ Year Lifespan
With proper annual maintenance
The Rinnai Product Series
Rinnai offers condensing and non-condensing tankless water heaters across three main series. Each targets a different balance of upfront cost, efficiency, and installation requirements. We help you choose the right one for your home.
Rinnai Sensei RXP Series
PremiumRinnai RU Series
Mid-RangeRinnai RE Series
Entry-LevelRinnai Tankless Water Heater Installation & Service
From new Rinnai tankless installations to repairs and annual maintenance, Beyond HVAC covers the full lifecycle of your Rinnai water heater.
Rinnai Tankless Water Heater Installation
We install the full Rinnai tankless water heater lineup across Etobicoke, Mississauga, and the broader GTA. Rinnai is one of the most recognized names in tankless water heating, with a product range that spans from the entry-level RE series to the flagship Sensei RXP condensing unit. Unlike a traditional tank water heater that keeps 40 to 60 gallons of water hot around the clock, a Rinnai tankless unit heats water only when you need it: the result is meaningful energy savings and an endless supply of hot water for households of any size. Every installation includes gas line connection, venting, and a full commissioning test. Learn more about our tankless water heater installation services or read our guide on tank vs. tankless water heaters to understand which system is right for your home.
Rinnai Water Heater Repair & Maintenance
Rinnai tankless water heaters are built to last 20 years or more with proper maintenance, roughly twice the lifespan of a conventional tank unit. Our technicians are experienced with the full Rinnai product range and can diagnose and repair common issues including error codes, ignition failures, scale buildup, and flow sensor problems. Annual maintenance on a Rinnai unit typically includes a descaling flush, filter cleaning, burner inspection, and a full operational check: essential in the GTA where hard water accelerates mineral buildup inside the heat exchanger. For urgent repairs, we offer same-day service across the GTA. Learn more about our water heater repair services.
Rinnai Condensing vs. Non-Condensing
Rinnai offers both condensing and non-condensing tankless water heaters, and the choice between them has real implications for installation cost and long-term efficiency. Non-condensing models like the RE series are simpler to install and vent using standard stainless steel flue pipe, making them a cost-effective option for straightforward replacements. Condensing models like the RU and Sensei RXP series achieve higher efficiency ratings (up to 0.96 UEF) by recovering heat from exhaust gases, but they require PVC venting and produce condensate that must be properly drained. We assess your home's venting configuration and recommend the most practical and cost-effective option. For most new installations in the GTA, the RU series offers the best balance of efficiency and installation flexibility. Read more about our hot water system services.
What Our Rinnai Customers Are Saying
Your Trusted Rinnai Water Heater Contractor in the GTA
Transparent Pricing
We assess your home, size the Rinnai unit correctly, and give you a firm quote before any work begins. No surprises on installation day.
Proper Sizing & Installation
An incorrectly sized tankless unit will struggle to meet peak demand. We calculate your home's hot water load and recommend the right Rinnai model for your household.
Labour & Equipment Warranty
All Rinnai installations are backed by our labour warranty plus Rinnai's manufacturer warranty: up to 12 years on the heat exchanger with registration.
Licensed & Certified
TSSA licensed and STO certified technicians on every job. Gas connections, venting, and electrical all performed to Ontario code.
Flexible Financing Available
A new Rinnai tankless water heater installation typically ranges from $2,500 to $5,000 installed depending on the model and venting requirements. We give you a firm, itemized quote after assessing your home so you know exactly what you're paying before any work begins.
We offer flexible financing through Financeit, including 0% interest for 12 months with approved credit. For homeowners upgrading from a rental tank unit, the monthly financing payment on a Rinnai installation is often comparable to or less than the monthly rental fee: and at the end of the term, you own the equipment outright.
Guides for Rinnai Homeowners
Helpful resources for homeowners considering or already using Rinnai tankless water heaters in the GTA.
Rinnai Water Heater Questions Answered
Is Rinnai a good brand for tankless water heaters?
Yes. Rinnai is one of the most established names in tankless water heating, with decades of experience and a strong reputation for reliability. Their product range covers everything from entry-level non-condensing units to high-efficiency condensing models with built-in recirculation pumps and Wi-Fi control. Rinnai units are widely supported in the GTA, with parts readily available and most licensed technicians familiar with the product line. For most homeowners switching from a tank water heater, a Rinnai RU or RE series unit is a reliable, well-supported choice.
How long does a Rinnai tankless water heater last?
With proper annual maintenance, a Rinnai tankless water heater typically lasts 15 to 20 years: roughly twice the lifespan of a conventional tank unit. The key to longevity in the GTA is annual descaling to remove mineral buildup from the heat exchanger, which is accelerated by the region's hard water. Rinnai's 12-year heat exchanger warranty reflects the manufacturer's confidence in the product's durability when properly maintained.
What is the difference between condensing and non-condensing Rinnai units?
Non-condensing Rinnai units (RE series) exhaust hot gases directly through a stainless steel flue and are simpler to install in homes with existing gas water heater venting. Condensing units (RU and Sensei series) recover heat from exhaust gases before venting, achieving higher efficiency ratings (up to 0.96 UEF vs. 0.82 UEF for non-condensing). Condensing units require PVC venting and produce condensate that must be drained. The right choice depends on your home's existing venting configuration and your efficiency goals. We assess both options and recommend the most practical choice for your specific situation.
How much does a Rinnai tankless water heater installation cost in the GTA?
A Rinnai tankless water heater installation in the GTA typically ranges from $2,500 to $5,000 installed, depending on the model, whether new venting is required, and whether any gas line upgrades are needed. Condensing models with PVC venting are generally at the higher end of that range. We provide a firm, itemized quote after assessing your home. Financing is available through Financeit, including 0% interest options for qualified applicants.
Do you service existing Rinnai equipment?
Yes. We repair and maintain all Rinnai models, including older units. Common Rinnai repairs include ignition failures, flow sensor issues, scale buildup in the heat exchanger, and error code diagnostics. Annual maintenance is recommended to keep the warranty valid and prevent premature failure from mineral buildup. We offer same-day service for urgent repairs across the GTA.
Ready for a New Rinnai Tankless Unit? We're Ready to Help.
Book a free home assessment and get a firm quote on a Rinnai tankless water heater installation. No pressure, no vague estimates: just honest advice and upfront pricing.