Tank water heaters
A familiar, dependable option that stores a ready supply of hot water. Available in a range of capacities for households with predictable demand.
Water Heater Services
Hot Water When You Need It — Always
From traditional tank water heaters to high-efficiency tankless systems, our licensed technicians install, repair, and replace all types of water heaters. We offer same-day service and 24/7 emergency response across the GTA.
24/7 Emergency Service
Licensed & Insured
Lennox Authorized Dealer
25+ Years Experience
Water Heater Services
Tank Water Heater Installation
Installation of natural gas and electric tank water heaters in all sizes (40–75 gallon). We handle removal of your old unit and full system commissioning.
Tankless Water Heater
High-efficiency on-demand tankless water heater installation. Endless hot water, lower energy bills, and a longer lifespan than traditional tanks.
Water Heater Repair
Fast diagnosis and repair of all water heater brands. Pilot light issues, thermocouple replacement, anode rod service, and pressure relief valve testing.
Emergency Replacement
No hot water? We offer same-day emergency water heater replacement across the GTA. We carry common sizes in stock for fast turnaround.
Heat Pump Water Heaters
Ultra-efficient heat pump water heaters use ambient air to heat water — up to 3x more efficient than electric resistance heaters. May qualify for available government rebate programs.
Annual Maintenance
Water heater flush, anode rod inspection, pressure relief valve test, and thermostat calibration to extend equipment life and maintain efficiency.
Explore Other Services
Explore your options
Find the right water heater for your home
Every home has a different hot-water demand. We assess household size, fixtures, fuel availability, venting, space, and efficiency goals before recommending a solution.
Tank systems
Expert sizing
Financing help
Water heater guide
Choose the water-heater style that fits your home
Tankless water heaters
Heats water only when you need it, helping save space and providing a continuous supply when correctly sized for your household.
Heat pump water heaters
Uses surrounding air to help heat water and can be an efficient choice where installation conditions and space are suitable.
Electric water heaters
A practical option for homes where electric service, installation requirements, or fuel preferences make it the right fit.
Recent installation work
Tankless installations built around the space.
Every tankless project is planned around the home’s available space, venting, gas supply and plumbing layout. These installations show the careful connections and clean equipment placement our team brings to the work.
Lennox tankless installation
A Lennox tankless water heater connected within a compact utility space.
Rheem tankless installation
A Rheem Performance Platinum tankless system installed with coordinated plumbing and venting connections.
Featured solution
Tankless hot water, designed around your demand
A tankless system heats water as it is needed rather than storing it in a large tank. The right model and installation depend on your household’s peak demand, fuel source, venting, and plumbing layout.
Explore the tankless offerReady to Get Started?
Contact us today for a free estimate. Our licensed technicians are available 24/7 for emergency service across the GTA.
Serving Peel · Toronto · York · Halton · Durham · Barrie
Frequently Asked Questions
How long does a water heater last?
Traditional tank water heaters typically last 8–12 years. Tankless units can last 20+ years with proper maintenance. If your tank is over 10 years old and leaking or failing to heat, replacement is usually the best option.
Tank vs. tankless — which is better?
Tankless water heaters cost more upfront but offer lower operating costs, endless hot water, and a longer lifespan. For most GTA homes, tankless pays for itself in 7–10 years. We'll help you choose the right option for your household.
My water heater is leaking — what should I do?
Turn off the gas or power supply to the unit and call us immediately. A leaking water heater is a safety hazard and can cause significant water damage. We offer same-day emergency replacement.
What size water heater do I need?
For a family of 4, a 50-gallon tank or a 180,000 BTU tankless unit is typically appropriate. We perform a proper load calculation based on your household size and hot water usage patterns.
Do you offer water heater rentals?
We specialize in owned water heater installations — which saves you money long-term compared to rental programs. We'll help you choose the right unit and financing options to make ownership affordable.
Why Choose Global Comfort Air?
Serving the Greater Toronto Area since 1999, we bring factory-trained expertise, premium Lennox equipment, and a commitment to your complete satisfaction on every job.
- Same-day emergency water heater replacement
- All brands and types serviced
- TSSA licensed gas technicians
- Tankless specialists — proper sizing and installation
- Upfront pricing — no hidden fees
- Disposal of old equipment included
- Rebate assistance — we identify currently active programs for qualifying units
- 24/7 emergency service across GTA
Lennox Authorized Dealer
Factory-trained technicians · Genuine parts · Full warranty
Water Heater Service Area — Greater Toronto Area & Beyond
TorontoMississaugaBramptonVaughanRichmond HillMarkhamOakvilleBurlingtonAjaxPickeringNewmarketAuroraBarrieEtobicokeScarboroughNorth York