5 Star Google Reviews 1-888-705-7368

🚨 Leaking water heater? Emergency Tankless Installation Available in Guelph: 1-888-705-7368

Expert Tankless Water Heater Installation
in Guelph

Endless hot water on demand. Switch to tankless and save on energy bills in Guelph — Navien, Rinnai, and more from licensed technicians.

100% Satisfaction Guaranteed 5-Star Reviews — Trusted by thousands of Guelph homeowners for tankless water heater installation.
Best Tankless Brands As a Rinnai PRO dealer, we install Rinnai, Navien, and other premium tankless water heaters — the most energy-efficient hot water solutions available for Guelph homeowners.
Licensed & Insured Technicians All our technicians are TSSA-certified and fully licensed to install tankless water heaters in Guelph. We meet all Ontario building and safety codes.
Same-Day Service Available Local. Reliable. Fast. Serving Guelph and the GTA — get an instant quote and same-day tankless water heater installation when you need it most.

Find the Perfect Tankless Water Heater for Your Guelph Home

Book a FREE Home Inspection 1-888-705-7368 Book a FREE Home Inspection 1-888-705-7368

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

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
Instant Quote

$500 OFF – Rinnai Rx199iN

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
Instant Quote

$200 OFF – Rinnai RXP199iN

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
Instant Quote

Brands We Carry

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Book a Free Virtual Inspection

Get expert tankless advice and get an instant quote for your home in Guelph within minutes

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5-Star Google Reviews

Our customers' satisfaction speaks volumes. See why HVAC Ontario is trusted by homeowners everywhere.

After a frustrating 5 days with Enercare and no hot water, HVAC Ontario came to the rescue. They answered my questions with clarity, provided excellent service, and installed a new tankless water heater within 24 hours.

C

Claudia Morrison

HVAC Ontario offered a competitive quote and great service. The technician was punctual and professional, and the installation was completed quickly and cleanly. Highly recommend their team!

A

Ainee Chung

The team at HVAC Ontario is fantastic. They truly care about customer comfort, offer competitive pricing, and provide high-quality equipment and service. I couldn't be more pleased.

S

Shamez Kassam

Abdul and his team were fantastic and professional. I got quotes for a tankless heater from a few places but Abdul's was not only the best, he was the most knowledgeable in the product.

D

Derrick Ho

An amazing level of customer service before, during, and after the install. Highly recommend to anyone considering such work to be done in their home.

D

Denis Dalton

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Frequently Asked Questions

Everything Guelph homeowners need to know about tankless water heater installation.

  • Tankless water heater installation in Guelph typically costs between $2,500 and $5,000 installed, depending on the brand, model (condensing vs. non-condensing), and your existing setup. HVAC Ontario provides upfront transparent pricing — no hidden fees. Contact us for a free quote.

  • Switching to tankless is a popular choice for Guelph homeowners. Tankless units provide endless hot water on demand, take up significantly less space, last longer (20+ years vs 8-12 for tanks), and are up to 40% more energy efficient than traditional tank heaters. The upfront cost is higher, but the long-term savings are substantial.

  • Yes. HVAC Ontario is a Rinnai PRO dealer and installs Navien, Rinnai, and other top-rated tankless water heater brands in Guelph. Both Navien and Rinnai are known for exceptional reliability, efficiency, and long-term performance. Our advisors help you choose the right model for your household's hot water demands.

  • Most tankless water heater installations in Guelph are completed in a single day — typically 4-6 hours for a straightforward swap. HVAC Ontario also offers same-day service for urgent replacements. If you have a leaking or failed water heater, call us now at 1-888-705-7368 for priority service.