WATER HEATER REPAIRS IN HAMILTON

No hot water, lukewarm taps, a leak, or popping/sulphur smells? We provide same-day and 24/7 emergency water heater repair in Hamilton—gas, electric, and tankless units. Our licensed techs diagnose first, fix what can be safely repaired, and only recommend replacement when the tank is at end-of-life. We stock common parts and restore hot water fast, with a written repair price range before we start. If a new heater is the smarter move, we can quote a replacement on the spot.

Water Heater Repairs - Greg's Plumbing & Heating

What to do in the first hour

Step 1

Turn Off Power/Fuel to the Heater

Gas: Rotate the gas control to OFF.
Electric: Switch OFF the breaker.

If you smell gas, don’t relight or use switches—leave the area and call your gas utility, then us.

Step 2

Shut the Cold Inlet to Stop Leaks

Turn the cold-water valve on top of the heater to OFF. If the tank is ruptured and leaking fast, shut the main water valve and open a hot tap to relieve pressure. Do not cap a dripping relief (T&P) valve.

Step 3

Take Photos & Note Error Codes

Snap the brand/serial label, any error code on the display, and the leak area. This speeds diagnosis and parts matching.

Step 4

Call Us for Same-Day Help

We’ll confirm an arrival window and text when we’re en route. Call 905-928-6831.

Want to compare options? Use our Water Heater Repair-or-Replace Calculator.

Water Heater Services, Done Right

PROFESSIONAL WATER HEATER REPAIR FOR YOUR HOME

From no-hot-water emergencies to full replacements, Greg’s Plumbing & Heating installs and repairs gas, electric, and tankless water heaters.

Book Online

TRADITIONAL TANK WATER HEATER REPAIR

Pilot won’t stay lit? Lukewarm water or no hot water at all? We repair standard gas and electric tank heaters, including thermostats, elements, igniters, gas valves, anode inspections, and minor leaks at valves and fittings. We get your tank heating safely again or let you know when replacement is the better choice.

TANKLESS (ON-DEMAND) WATER HEATER REPAIR

Error codes, cold-hot-cold swings, or noisy fan? We diagnose tankless water heater problems, including scale buildup, sensors, ignition faults, and venting issues. Our techs check gas sizing, vent route, and condensate management so your on-demand system runs quietly and reliably.

WATER HEATER DIAGNOSTICS & NO-HOT-WATER CALLS

Not sure what’s wrong? We start with a full diagnostic on gas, electric, and tankless heaters—checking power, gas supply, controls, piping, and venting. You’ll get clear repair-vs-replace options with a written scope so you can decide what makes sense for your home and budget.

SYSTEM SAFETY UPGRADES & CODE CORRECTIONS

Sometimes the heater itself is fine, but the installation is not. We upgrade gas piping, venting, relief valves, drip legs, condensate drains, pans, and dedicated circuits so your water heater setup meets current code and manufacturer requirements.

REPLACEMENT OPTIONS & NEW INSTALL QUOTES

When tanks are rusted, leaking, or simply too old, repair money is better spent on a new heater. We size the right gas, electric, or tankless unit, explain rental vs. owning, quote a new install, and schedule replacement so you are never without hot water for long.

24/7 EMERGENCY WATER HEATER REPAIR

No hot water after hours, on weekends, or during holidays? We provide 24/7 emergency water heater repair for leaks, failed igniters, tripped elements, and other urgent problems. Our techs arrive ready to stabilise the issue and outline repair-vs-replace options so you can get hot water restored quickly and safely.

Same-day diagnostics and professional water heater repair for gas, electric, and tankless systems. You’ll get a written repair price range before we start—no hourly surprises. If the heater is beyond repair, we’ll quote a safe, code-compliant replacement. Licensed and insured.

10 Essential Plumbing Maintenance Tips Every Homeowner Should Know
Water Heater Answers

Everything You Need to Choose the Right Fix

From “no hot water” to full replacements, these short guides explain your best options. Have a question right now? Book Online or call 905-928-6831.

Repair or Replace?

Repair is likely when you see: pilot/igniter won’t stay lit, tripped reset, warm-not-hot water, small valve leak, sensor/thermocouple fault.

Replacement is smarter if: tank is 12–15+ years, seam leak or rust in hot water, repeated no-hot-water calls, you want higher efficiency or tankless.

Our process: Diagnose first → show both options → give a written installed scope & range (no hourly surprises) → complete the work ASAP.

Tank vs Tankless

Traditional tank (gas/electric): lower upfront cost, simple maintenance, common sizes 40–50 gal; good for steady daily use.

Tankless (condensing gas): endless hot water, frees floor space, high efficiency; may need gas-line sizing, venting route, and condensate management.

We size the system to your household and install to code, then commission it for quiet, efficient operation.

What to Expect

  1. Arrival window & floor protection
  2. Diagnosis first, clear options next
  3. Written installed scope & range
  4. Same-day repair or replacement when possible
  5. Commissioning & safety checks (gas pressure, venting, CO, temperature rise)
  6. Clean-up and old-unit haul-away (with replacement)

FAQ — Water Heaters in Hamilton

Verify the breaker (electric) or that the gas control isn’t set to “Pilot/Off.” Check the thermostat setting and note any error code. If there’s a gas smell or water on the floor, turn power/fuel off and call us.

Typical lifespans: tank 8–12 years, tankless 15–20. A leaking tank needs replacement; ignition/sensor/element issues are often repairable. We’ll show you both options and give a written installed range either way.

A T&P valve is a safety device. Dripping may mean thermal expansion or a failing valve. Do not cap it. Turn power/fuel off, close the cold inlet if leaking, and call us.

Sediment is boiling under the water, common on older tanks. A flush may help; advanced sediment or age usually points to replacement.

Often sediment or a worn anode rod. We can test, flush, and replace the anode—or recommend a new tank if the liner is failing.

Yes—Navien, Rinnai, Rheem and more. Have the error code handy; we stock common parts and can often restore hot water the same day.

Yes. We remove/dispose of the old unit, install to code with mixing/expansion components as needed, and fully commission the system.

Hamilton Homeowner Resources

How to shut off your main water valve in Hamilton

Find the valve fast and stop water damage before it spreads.

Water Heater Installation - Greg's Plumbing & Heating - Commercial Plumbing, Residential Plumbing, Plumbing Repairs

Water Heater Repair or Replace Calculator

Answer a few quick questions. Get a clear next step and book a licensed local pro. Works for tanks and tankless.

water on floor next to water heater

Water Heater: Repair or Replace?

Clear signs, cost cues, and when a new tank beats another repair.

Close-up of water faucet running

High Water Bill? Silent leak checklist

Quick tests to catch running toilets and hidden leaks in minutes.