132 Cartwright Ave, North York ON
Mon–Sat 8am–7pm · Sun 9am–5pm
Tank & tankless water heaters
Water heater repair & replacement
across Toronto & the GTA
Hot water is the one thing in the house nobody notices until it is gone. Tank, tankless or power-vent — the right answer depends on how much you use at once, not on which is newest.
TSSA-licensed gas installations
Tank & tankless expertise
Same-week replacements often available
Serving Toronto from North York
At a glance
Tank options40–75 US gal typical
TanklessOn-demand gas
VentingPower & direct vent
FuelNatural gas focus
ResponsePriority no-hot-water
AreaGTA-wide
1,000+
Clients served
TSSA
Certified team
7 days
A week support
GTA-wide
Service coverage
20+ yrs
Climate experience
Domestic hot water
Hot water that keeps up with Toronto households
Tankless is not automatically an upgrade. It suits households with steady demand and a gas line that can carry the burner; it suits a family of five all showering within an hour rather less well than the brochure suggests. A correctly sized tank still wins in plenty of Toronto homes.
What decides it is real fixture demand — how many outlets run together, at what flow, and for how long. That, the venting route and the gas line capacity are what we check before recommending anything, because a tankless unit starved of gas will disappoint every winter when the incoming water is coldest.
When a tank goes, it usually goes all at once and often onto the floor. We carry the sizes most GTA homes run so a failure does not turn into a week of cold showers, and the old unit is drained, disconnected and taken away as part of the job.
What matters most for water heater service in the GTA
Right sizing, licensed gas/refrigeration work, and commissioning beat the cheapest sticker price. We verify airflow, safety devices, condensate paths, and controls so your system does not fail the first extreme week of the season. Ask us about dual-fuel, zoning, and rebate-eligible models during your quote.
Efficient water heating incentives
High-efficiency tanks and qualifying tankless units may attract utility or provincial incentives. Confirm current programs on our rebates & incentives page when planning a replacement.
Water heater red flags
- No hot water or water that never reaches set point
- Rust-coloured water or metallic taste from hot taps
- Pooling water or corrosion at the tank base
- Popping or rumbling from sediment buildup
- Pilot outages or ignition lockouts on gas units
- Tank age over 10–12 years with rising repair frequency
- Insufficient hot water for morning showers
- Unusual gas smell near the heater — shut off and call immediately
Practical sequence
How we approach water heater service
A structured process so you always know the next step.
Consult
Goals & constraints
Assess
On-site measurements
Compare
Repair vs replace
Schedule
Parts & access
Execute
Licensed install
Verify
Commission & teach
Tank or tankless?
Tank vs. tankless water heaters
Both are safe, proven choices — the right one depends on your gas line, fixture count, and space.
| Conventional tank | Tankless | |
|---|---|---|
| Upfront cost | Lower | Higher, offsets over time |
| Hot water supply | Limited by tank size | On-demand, effectively endless |
| Space needed | Floor footprint for the tank | Compact, wall-mounted |
| Gas line | Standard residential sizing | Often needs a larger dedicated line |
| Maintenance | Anode & sediment checks | Annual descaling required |
Water heater work
Tank & tankless water heater services
Licensed gas work, correct venting, and sizing for real fixture loads — not catalogue guesses.
Tank water heater replacement
Atmospheric, power-vent, and direct-vent tanks installed with new supply valves, T&P discharge, and drip pans where required.
Tankless installation
Gas tankless sized for GPM demand, with proper venting, condensate handling, and isolation valves for flushing.
Repair & parts service
Thermostats, gas valves, igniters, fans, and sensors repaired when the vessel itself is still sound.
Tankless descaling
Annual or bi-annual flushing to protect heat exchangers from Toronto-area mineral buildup.
Recirculation loops
Dedicated or crossover recirculation for faster hot water at distant fixtures — designed to avoid wasted energy.
Ask about recirculation →Light commercial DHW
Higher-capacity tanks and racked tankless for salons, cafés, and small multi-unit buildings.
View heating services →
No hot water?
Same-week replacement on the common tank sizes
We carry the sizes most GTA homes run, so a failed tank does not turn into a week of cold showers.
Arrange a replacementWhy Toronto Air Systems
Why trust us with your water heater
Local crews, licensed workmanship, and recommendations built around how Toronto buildings actually heat and cool — not generic scripts.
TSSA-licensed technicians
Every technician who works on your equipment holds current Ontario gas and/or refrigeration credentials — no uncertified subcontractors.
Built for Toronto winters & summers
We size and install equipment for real GTA climate extremes, not brochure averages from milder markets.
Transparent pricing
Detailed written quotes with equipment specs, labour, and warranty terms. No bait-and-switch or surprise change orders.
Multi-brand expertise
We service and install major HVAC brands, so recommendations fit your home — not a single manufacturer quota.
How it works
Water heater service steps
From first call to commissioned equipment, you always know the next step, the timeline, and what is included.
Consultation
Tell us about your home or building, symptoms, and goals — by phone or online form.
On-site assessment
A licensed technician evaluates your existing water heater, ductwork, and load requirements.
Written quote
You receive clear options, pricing, timelines, and rebate notes — no vague estimates.
Installation or repair
Our TSSA-licensed team completes the work to code with minimal disruption.
Follow-up support
We walk you through operation, warranty, and ongoing maintenance recommendations.
Brands we work with
Water heater brands we install
We match tank or tankless brands to your gas supply, vent path, and household demand.
Where we work
Water heater service across Toronto & GTA
Basement mechanical rooms and condo service rooms — licensed crews from North York outward.
Toronto
All neighbourhoods & districts
North York
Our home base
Mississauga
West GTA residential & commercial
Brampton
Full HVAC coverage
Vaughan
Including Woodbridge & Concord
Markham
East GTA homes & businesses
Richmond Hill
Residential & mixed-use
Scarborough
East Toronto
Etobicoke
West Toronto
Oakville
Halton Region
Pickering & Ajax
Durham Region
Whitby & Oshawa
East GTA
Client reviews
Water heater feedback from GTA clients
Tank started leaking Friday evening. They had a power-vent replacement in by Saturday afternoon and hauled the old unit away. Spotless job.
Scarborough
Switched to tankless for a family of five. They sized it correctly — two showers and the dishwasher no longer fight each other.
Oakville
Honest advice: our tank was only seven years old with a bad thermostat. They repaired it instead of upselling a full replace. Respect.
North York
FAQ
Water heater FAQ — Toronto & GTA
How long do water heaters last in Toronto?
Conventional tanks often last 8–12 years depending on water quality and anode maintenance. Tankless heat exchangers can last longer with regular descaling. Age plus leak risk drives replacement timing.
Tank or tankless — which is better?
Tankless saves space and can cut standby loss; tanks are simpler and sometimes cheaper upfront. Simultaneous fixture demand, gas line size, and venting path decide the winner for your home.
Why is my hot water rusty?
Corroding tanks or dying anode rods are common culprits. We inspect and advise — continuing to use a heavily corroded tank risks a sudden flood.
Do you remove the old water heater?
Yes. Standard replacements include drain-down, disconnect, haul-away, and install of the new unit with code-required valves and discharge piping.
Can you install a tankless on my existing vent?
Not always. Tankless units often need dedicated Category III/IV venting and adequate combustion air. We verify before ordering equipment.
What size tank do I need?
Household size, peak shower count, and laundry habits drive capacity. Many Toronto homes land in the 40–60 US gallon range; larger families or jetted tubs may need more or tankless.
Are there rebates for efficient water heaters?
Sometimes — programs favour high-efficiency and heat-pump water heaters when available. Check current incentives before you buy.
How much does water heater service cost in Toronto?
Cost depends on equipment capacity, brand, duct or piping complexity, electrical/gas upgrades, and whether you repair or replace. We provide written quotes after a site assessment so you can compare options fairly. Call 647 953-4252 for a visit.
Do you serve my area in the GTA?
Yes. We are based in North York at 132 Cartwright Ave and regularly serve Toronto, Mississauga, Vaughan, Markham, Scarborough, Etobicoke, Brampton, and nearby communities.
Are your technicians licensed?
Yes. Gas and refrigeration work is performed by TSSA-licensed technicians. We follow Ontario code practice for venting, refrigerant handling, electrical disconnects, and condensate management.
Restore reliable hot water
Call 647 953-4252 or book online — tank and tankless service across the GTA.