Water Heater Repairs in the GTA – Tank & Tankless Specialists
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Short answer: No hot water, leak, or error code? We provide same-day water heater repairs in Greater Toronto for tank and tankless systems—licensed, insured, and safety-checked. We service Toronto, Mississauga, Brampton, Markham, Vaughan, Richmond Hill, Scarborough, Etobicoke, North York, Pickering, Ajax, Whitby, Oshawa, Oakville, and Burlington. 24/7 emergency support available.
No hot water or a leaking tank? Our licensed GTA technicians repair both storage-tank and tankless water heaters with same-day availability. We diagnose quickly, stock common parts, and price the work up-front so there are no surprises. From pilot issues and elements to descaling and error codes, we get your hot water back safely and fast.
If you just searched water heater repairs Toronto or water heater repair Toronto, you’re in the right place. For upgrades, we also handle Tankless Water Heater Installations Greater Toronto with code-compliant venting, gas sizing, and recirculation options.
Why homeowners call us first: Water Heater Repairs Greater Toronto
Licensed & insured techs (gas, combustion air, and venting verified).
All brands—gas & electric: Rheem, AO Smith, Bradford White, Giant, Rinnai, Navien, Noritz, Bosch, Takagi, Thermann, and more.
Rapid diagnosis, stocked vans: most common parts on hand.
Up-front pricing before work begins—no surprises.
Documented results: photos, test readings, and part numbers on every job.
Three GTA hubs (Toronto • Markham • Mississauga) for faster dispatch across the region.
Common problems we fix (and what they usually mean)
No hot water
Tank: failed gas control, igniter/thermocouple, heating element, tripped breaker, or sediment insulating the burner.
Tankless: scaled heat exchanger, low gas pressure, blocked inlet filter, or vent/condensate issues triggering a safety shutdown.
Not enough hot water / temperature swings
Tank: undersized tank, thermostat out of spec, heavy sediment reducing real capacity.
Tankless: “cold-water sandwich,” minimum-flow calibration, or scale restricting heat transfer.
Leaks or rust
Tank: T&P valve discharge, corroded tank from a depleted anode, failed nipples/dip tube.
Tankless: gasket/o-ring seep, heat-exchanger condensate misrouting, internal union leaks.
Strange noises
Tank: popping/rumbling = sediment boiling on the tank bottom.
Tankless: fan/inducer whine, rapid clicking from scale-restricted flow.
Error codesWe read/clear codes on Rinnai/Navien/Noritz/Bosch, fix the root cause, test, and reset safely.
Safe homeowner checks (do these only): confirm the breaker is on, gas valve fully open, cold/hot water valves open, thermostat ~120°F (49°C), and clean the tankless inlet screen. If you smell gas, evacuate immediately and call for emergency service.
Repair vs. replace—our honest framework
Repair when a tank is under ~8 years and the issue is isolated and cost-effective (thermostat, element, igniter, gas valve, anode).
Consider replacement at 8–12 years with leaks/corrosion or recurring failures—repairs often won’t pay back.
Tankless life is ~15–20 years with annual descaling and correct gas/venting; we repair boards, fans, sensors, gas valves, and flow issues if the heat exchanger is sound.
We’ll show both choices—cost today, estimated lifespan, efficiency, and any code upgrades—so you choose with confidence.
Storage-tank water heaters: targeted fixes & life-extending care
Repairs we handle fastGas controls, igniters/thermocouples, elements, thermostats • T&P valves, dip tubes, nipples, dielectric unions, expansion tanks • Sediment flushes to restore output and quiet operation.
Maintenance that matters
Annual flush to remove sediment and reduce burner/element strain.
Anode rod inspection/replacement every 3–5 years to protect the steel tank.
Combustion & draft checks for safe operation under Ontario requirements.
Tankless water heaters: precision diagnostics & descaling
Tankless units deliver endless hot water—when they’re clean and calibrated.
What we do
Descale service (pump, solution, neutralize, flush) to restore heat-transfer.
Clean inlet screens, verify minimum flow, calibrate air-fuel mix.
Inspect fan/inducer, flame sensing, condensate routing, and vent integrity.
Control board/sensor/gas-valve diagnostics with proper test equipment.
Why annual service helps in the GTAModerately hard water is common here. Scale = temperature spikes, lukewarm output, and nuisance shutdowns. One annual visit typically restores performance and reduces energy waste.
Considering an upgrade?
We’ll size the unit to your real simultaneous demand (showers + laundry + dishwasher), verify gas line BTU capacity, choose the right Category III/IV venting (often concentric), plan condensate neutralization, and recommend recirculation if you want instant hot water at far fixtures. If your home’s draw pattern suits a high-recovery tank better, we’ll explain why—no one-size-fits-all upsells.
Transparent pricing—what drives the number
Diagnostic fee applied to repairs when approved.
Parts vary (gas valve vs. element vs. igniter/board) by brand and model.
Access & code corrections (venting, gas sizing, condensate routing) can add time.
After-hours = a clear emergency dispatch increment; you’ll see it before we start.
We follow Ontario TSSA-aware procedures and reference Ontario Building Code requirements on venting/combustion air where applicable.
The service experience (step by step)
Book & triage – symptoms, model/serial, fuel type, rough install age.
On-site diagnosis – safety checks, pressure/combustion tests, code scan (tankless).
Clear options – repair vs. replace with costs, timelines, and code notes.
Same-day fix – stocked common parts minimize downtime.
Run test + teach-back – temp stability, leak check, venting, and maintenance tips.
Warranty & documentation – written parts/labour coverage, photos, readings, part IDs.
What to have ready (saves you time)
Utility room or mechanical closet cleared for access.
Past invoices or install date (if handy).
For tankless: take a quick phone photo of the last error code.
Local proof points that help you decide
GTA coverage from three hubs (Toronto, Markham, Mississauga) = faster arrival windows.
Brand depth across Rheem, AO Smith, Bradford White, Giant, Rinnai, Navien, Noritz, Bosch—no “sorry, we don’t service that.”
Home types we see daily: detached, semis, townhomes, and condo mechanical rooms with tight clearances.
FAQs
1) How long do water heaters last here?
Tanks: ~8–12 years with proper flushing/anode care. Tankless: ~15–20 years with annual descaling and verified gas/vent sizing.
2) Is annual maintenance really necessary?
Yes. Tanks need sediment control; tankless needs descaling and filter cleaning. Skipping service is the #1 cause of early failures and nuisance shutdowns.
3) My shower runs hot-cold-hot on a tankless—why?
Minimum-flow and scale. We clean the inlet screen, descale, check recirc and flow settings, and calibrate. That typically fixes it.
4) T&P valve dripping—can I leave it?
No. It’s a safety device venting temperature/pressure. We test safely, correct real causes (overheat, expansion, or a failed valve), and replace if needed.
5) Do you do same-day repairs?
Most of the time, yes. Our trucks carry common valves, igniters, thermostats/elements, sensors, and gaskets. Specialty parts are sourced rush.
6) Gas vs. electric—does it change cost?
Sometimes. Parts differ and gas units require combustion/vent checks, but you’ll always see a firm quote first.
7) Should I repair an 11-year-old leaking tank?
If the tank body is leaking, replace. Internal corrosion isn’t economically repairable and can escalate quickly.
Ready to restore hot water?
Call now for same-day water heater repair anywhere in Greater Toronto. If you’re considering an upgrade, ask about Tankless Water Heater Installations Greater Toronto—we’ll size it right, install it cleanly, and stand behind the work with a clear warranty.
Primary button: Book Same-Day Repair
Secondary: Get Transparent Quote
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