Water Heater Repair & Installation Toronto
No hot water in your GTA home? Licensed plumbers repair or replace tank & tankless water heaters same day.
Water Heater Repair & Installation — Tank, Tankless
No hot water is not a minor inconvenience. In a GTA winter, it’s an emergency.
Whether your hot water tank is leaking from the bottom, your tankless unit is throwing an error code, or you’ve simply woken up to cold showers with no obvious explanation — Professional Plumbing and Drain Services responds the same day. We repair existing water heaters when repair makes sense, and we replace them when it doesn’t, with honest guidance on which path saves you more money over the long run.
Licensed plumbers. Flat-rate upfront pricing. No overtime charges. Serving Toronto, North York, Scarborough, Etobicoke, Mississauga, Vaughan, Markham, and the broader GTA.
Call us now: +1 (437) 247-7856
Signs Your Water Heater Needs Repair or Replacement
How do I know if my water heater needs to be repaired or replaced?
These are the signals that tell you something is wrong — and which ones typically mean repair vs. replacement:
Likely repairable:
- No hot water — often a failed thermostat, tripped circuit breaker (electric units), or a faulty pilot light (gas units); a licensed plumber can diagnose and fix most of these in a single visit
- Inconsistent water temperature — fluctuating heat usually points to a failing thermostat or a sediment-coated heating element rather than tank failure
- Pressure relief valve leaking — the T&P valve is a safety device; if it’s dripping, it needs replacement, not a full unit swap
- Water heater making noise — rumbling or popping from the tank is typically sediment buildup; a flush and anode rod check can extend the unit’s life several more years
Usually time to replace:
- Water heater leaking from the bottom — a leak at the tank base almost always signals internal corrosion. Once the tank itself is corroding, no repair is viable; replacement is the only safe option
- Unit is 10+ years old with recurring problems — tank water heaters last 10–15 years; repeated repairs on an aging unit will cost more than a replacement within 12–18 months
- Rusty or discoloured hot water — rust-coloured water from hot taps indicates internal tank corrosion and is a health and safety concern
- Consistently running out of hot water — if your household has grown or your demand has increased, a same-size tank replacement or an upgrade to tankless may be the right call
If you’re unsure, we’ll diagnose the unit and give you a straight answer — repair cost vs. replacement cost, with no pressure toward the more expensive option.
Tank vs. Tankless Water Heaters — What’s Right for Your Toronto Home?
What is the difference between a tank and tankless water heater?
This is the most common question we get before a replacement. Here is the practical comparison for a GTA home:
Traditional Tank Water Heater
- Stores 40–60 gallons of preheated water ready on demand
- Lower upfront cost: most like-for-like tank replacements in Toronto run $1,800–$3,200 installed depending on tank size, fuel type, and venting
- Straightforward installation — replacement of an existing tank is usually a same-day job
- Lifespan: 10–15 years with maintenance
- Best for: households with predictable, moderate hot water demand and budgets that favour lower upfront cost
Tankless (On-Demand) Water Heater
- Heats water instantly as it flows through the unit — no storage, no standby heat loss
- Higher upfront cost: tankless installation in the GTA typically runs $3,500–$6,500 installed; older homes often require gas line upgrades and new venting, which can add $800–$2,000 to that total
- Longer lifespan: 18–22 years with annual descaling maintenance
- Energy savings of roughly 25–35% on hot water heating costs vs. a tank
- Best for: households with high or unpredictable hot water demand, or homeowners planning to stay in the home long enough to recover the higher upfront cost
We’ll assess your home’s gas line size, venting configuration, and household demand before recommending either option — because a tankless unit installed without the right infrastructure is a problem waiting to happen.
Pricing note: All figures above reflect 2026 GTA market rates from licensed contractors. Your exact quote will depend on unit size, fuel type, existing venting, and access. We provide a full written quote before any work begins.
Our Water Heater Service Process
Whether you need a repair or a full replacement, here’s what to expect:
- Same-day diagnosis — we assess the unit, check the thermostat, burner or element, anode rod, T&P valve, and connections
- Honest repair vs. replace recommendation — based on the unit’s age, the cost of the repair, and how many years of reliable service it’s likely to have left
- Upfront flat-rate quote — repair price or full replacement price, in writing, before we touch anything
- Same-visit repair or replacement — our service vehicles carry common repair parts and a range of tank units; most jobs are completed the same day you call
- Safe disposal of the old unit — we remove and properly dispose of your old tank as part of every replacement job
Other Services
Need Water Heater Repair Today?
Tank leaking, no hot water, or time to upgrade to tankless? Licensed GTA plumbers respond same day — flat-rate pricing.
Water Heater Toronto
Frequently Asked Questions
For a standard gas tank replacement (40-gal, like-for-like), expect $1,800–$3,200 installed in 2026. A tankless conversion typically runs $3,500–$6,500 installed, rising to $8,000+ if your home needs gas line or venting upgrades — which is common in Toronto semis and pre-1990 homes. We provide a full itemised quote before any work begins.
The most common causes are a tripped circuit breaker or failed heating element (electric units), an extinguished pilot light or faulty thermostat (gas units), or a failing unit that can no longer maintain temperature. Call us — most no-hot-water problems are diagnosable and fixable in a single visit.
Almost certainly yes. A leak at the base of the tank indicates internal corrosion — the tank wall itself is compromised. This cannot be repaired; continued use risks a full tank failure and significant water damage. Turn off the cold water supply to the unit and call us for a same-day replacement assessment.
A like-for-like tank replacement is typically completed in 2–3 hours. A tankless installation takes 3–5 hours; longer if gas line or venting upgrades are required. We confirm the expected time on-site before starting.
For most Toronto homeowners planning to stay in their home 8–10+ years, tankless pays back the higher upfront cost through energy savings and eliminates the risk of a tank flood. For shorter timelines or tighter budgets, a quality tank replacement is the more practical choice. We'll run the numbers with you based on your situation.