Residential · Hot water tanks & tankless
Water Heater Repair in Markham
No hot water usually traces to a pilot, thermocouple, igniter, element or thermostat. Water around the base is a different story: a dripping relief valve, a loose fitting or a tank that has rusted through.
- Thermostat set to a safe, steady temperature
- Sediment flushed from tanks worth keeping
- Tank, power-vent and tankless units serviced
- Old tank drained and hauled away on replacement
- Licensed plumbers (details on request)
- Price agreed before work
- Call-only, no forms
- Tested before we leave
Signs you require water heater fix
No hot water at all, or a hot supply that runs cold far earlier than it once did. Water that comes out rusty or smells of rotten eggs. Popping or rumbling sounds from the tank. A pilot that won't stay lit. Water pooling around the base. A relief valve that drips or discharges. Each points to a different part, so we listen closely when you describe what you have noticed.
Our routine on the day
We identify the heater first: gas or electric, tank or tankless, rented or owned, and its age from the serial plate. On gas tanks, we test the pilot assembly, the thermocouple or flame rod, the gas control, burner and venting. On electric tanks, we test the elements, thermostats and high-limit switch. On tankless units, we read error codes and check the inlet filter and flow sensor.
Once the fault is clear, we explain the repair and the part involved before doing anything. If the tank itself is leaking, fix is not an option, and we will tell you so instead of replacing parts on a heater that is about to fail anyway. Before leaving, we confirm hot water at the taps and check that the relief valve and venting are working safely.
Markham houses and what shapes this job
Hard York Region water is the main enemy of tank heaters. Minerals settle at the bottom of the tank, insulating the water from the burner and making the heater work harder. That is where the rumbling comes from. Regular flushing helps, and softened water slows the build-up.
Venting is another issue in older homes. Gas heaters in houses around Markham Village and Unionville often share a chimney flue with an older furnace. After a furnace upgrade to a high-efficiency model that exhausts sideways through the wall, the old chimney may be oversized for a lone water heater, and that can bring draft problems. We check for that during every gas service.
Newer homes in areas like Cornell and Cathedraltown often have power-vented heaters that exhaust through plastic pipe. Those depend on a fan and a pressure switch, which are common failure points.
Parts on hand
Thermocouples, elements, thermostats and common gas valves ride along in the van, so many repairs finish the same day. Brand-specific control boards sometimes need ordering, and we will give you a realistic date if so. In the meantime we try to leave you with at least partial hot water where it is safe.
Ring us without delay if
Call immediately if you smell gas, if water is leaking from the tank itself, or if the relief valve is discharging hot water. Our water heater warning signs page lists other symptoms worth a call.
Before leaving, we confirm hot water at the taps and check that the relief valve and venting are working safely.
From the job notes of Plumbers in Markham
Job card · Hot water tanks & tankless
On the van for this job
- Spare thermocouples, igniters, elements and thermostats
- Hose, pump and dolly for draining and moving tanks
Signs you need this
- Showers going lukewarm halfway through
- Rusty or cloudy hot water
What we check before we pack up
- Check the gas supply, venting and draft
- Confirm flame, elements and recovery
| Type | How it works | Usual fault |
|---|---|---|
| Gas tank, natural draft | Simple, chimney vented | Pilot, thermocouple, sediment |
| Electric tank | No venting, slower recovery | Elements, thermostats |
How the job runs, start to finish
- 1
On the phone
Explain what the water is doing and where. We ask the age of the house and which valve or breaker to shut while we drive over.
- 2
Drop cloths down
Floors and cabinets get covered, the water or gas is isolated and the work area is lit.
- 3
Find the failed part
We open the trap, cleanout, access panel or wall where the fault is, and show you what we found.
- 4
Quote, then work
We explain what failed and what the fix costs; no cutting starts until you say yes.
- 5
Cut, fit, seal
Old parts come out, new pipe, valves or fixtures go in, and joints are soldered, pressed, crimped or glued.
- 6
Test and ticket
We run water, pressure-test or fire the heater, check for drips, clean up and leave a written ticket of what was done.