What does it cost to replace a gas water heater tank in Toronto?
$3,223.81
$240.50
For this Toronto gas water heater tank replacement, RenoFiz estimated about $3,224 CAD for the mandatory scope, plus up to $241 CAD of possible extra work if the drain pan or gas shut-off valve turns out to need replacing.
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Location
Toronto, ON (FSA M5V)
Existing unit
40-gallon atmospheric gas tank
Replacement
Standard 40-gallon gas tank
Unit supply
Contractor-supplied
Access
Walk-out / main floor, no stairs
Code items
Seismic strapping and expansion tank
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Where the $3,224 project cost goes
Where the $3,224 project cost goes
See the full cost breakdown for this project.
| Scope item | Labour | Materials | Total |
|---|---|---|---|
| Permit Coordination & Fees | $207.00 | $425.00 | $632.00 |
| 40 Gallon Gas Water Heater Package | — | $2,236.81 | $2,236.81 |
| Seismic Strapping (Ontario Code) | — | $75.00 | $75.00 |
| Thermal Expansion Tank | — | $280.00 | $280.00 |
| Complete base project cost | $207.00 | $3,016.81 | $3,223.81 |
Total Cost
$3,223.81
Possible extra
$240.50
On-site decisions or hidden conditions that could increase the scope.Things to know for your project
Things to know for your project
Conditions, constraints, and on-site decisions that shape the final project cost.
A non-compliant drain pan
Trigger: The existing drain pan is found to be cracked, leaking, or improperly sized when the old tank is removed.
A new hot water tank drain pan would need to be supplied and installed. This example identifies approximately $150 in possible additional work for this item.
A failed gas shut-off valve
Trigger: The existing gas shut-off valve fails to operate or shows signs of leakage during disconnect.
A new gas shut-off valve would need to be supplied and installed by a gas fitter. This example identifies approximately $90 in possible additional work for this item.
A different tank or a tankless conversion
Trigger: A larger tank, a different unit, a homeowner-supplied unit, or a conversion to a tankless system is chosen instead of a contractor-supplied 40-gallon gas tank.
The unit, venting, gas, and installation requirements change, so the project would need its own scoped estimate.
Different site or access conditions
Trigger: The unit must be moved up one or more flights of stairs, or other site conditions differ from this walk-out, no-stairs location.
Those conditions require their own scoped estimate instead of using this example as an average price.
The real conversation behind this estimate
The real conversation behind this estimate
This is the how RenoFiz gathered the facts and turned a simple request into a scoped estimate.
i'd like to get my hot water tank replaced
I've had a look at the photo of your water heater — it's a gas-fired tank with a standard atmospheric vent, sitting in what looks like a basement or utility room.
To pin down an accurate replacement estimate, a few questions:
Question: What is your postal code (first three characters)?
Question: Do you know your current tank's capacity (e.g., 40 or 50 gallons), and do you want to stay the same size?
- 40 Gallon (standard)
- 50 Gallon (large)
- I'm not sure - estimate based on the photo
Question: Are you after a straight tank replacement, or thinking about converting to a tankless (on-demand) system?
- Standard tank replacement
- Convert to tankless
Question: Will you supply the new water heater yourself, or should the contractor provide it?
- Contractor-supplied (standard)
- I will provide the unit
Question: Are there any stairs to navigate when moving the tank from its spot to outside?
- No stairs (walk-out or main floor)
- Yes, one flight of stairs
- Yes, multiple flights
What is your postal code (first three characters)?: M5V
Do you know your current tank's capacity (e.g., 40 or 50 gallons), and do you want to stay the same size?: 40 Gallon (standard)
Are you after a straight tank replacement, or thinking about converting to a tankless (on-demand) system?: Standard tank replacement
Will you supply the new water heater yourself, or should the contractor provide it?: Contractor-supplied (standard)
Are there any stairs to navigate when moving the tank from its spot to outside?: No stairs (walk-out or main floor)
Here's the estimate plan
Work Summary
Swap-out of an existing 40-gallon atmospheric gas water heater. Covers a contractor-supplied unit, installation, gas and plumbing permits, seismic strapping, and removal/disposal of the old tank. The site is a walk-out/main floor with no stairs.
Required Permits
| Permit / Inspection | Owner | Reason |
|---|---|---|
| Gas Permit | gas_fitter | Required for a gas water heater replacement in Ontario. |
| Plumbing Permit | plumber | Required for a water heater replacement in Ontario. |
Bill of Process
| Step | Owner | Description |
|---|---|---|
| BOP-01 | contractor/owner | Apply for and secure the municipal gas and plumbing permits. |
| BOP-02 | plumber/gas_fitter | Isolate and disconnect the water, gas, and venting from the existing tank. |
| BOP-03 | plumber | Drain and remove the old tank, protecting floors and access routes. |
| BOP-04 | plumber/gas_fitter | Set the new water heater, including water piping, gas connection, and venting. |
| BOP-05 | plumber | Fit the required code components (expansion tank, drain pan, T&P discharge, seismic strapping) where not present or reusable. |
| BOP-06 | inspector | Carry out the municipal gas/plumbing inspection. |
| BOP-07 | plumber/gas_fitter | Fill, test, and commission the new unit. |
| BOP-08 | plumber | Haul away and dispose of the old tank. |
Cost Estimate
| Title | Description | Range |
|---|---|---|
| Permit Coordination & Fees | Administration and coordination of the municipal gas and plumbing permits, including the application and inspection scheduling. | $490 - $785 |
| 40 Gallon Gas Water Heater Package | Supply and install a 40 US gallon atmospheric gas tank. Includes disconnecting the existing unit, plus draining, removal, and commissioning of the new one. Typical model: Rheem PROG40S38 or Bradford White RG240S6N. | $1,700 - $2,700 |
| Seismic Strapping (Ontario Code) | Install seismic strapping to meet Ontario building code water-heater restraint requirements. | $60 - $90 |
| Thermal Expansion Tank | Supply and install a thermal expansion tank to satisfy current closed-system plumbing code. | $200 - $350 |
Cost Breakdown
| Category | Amount |
|---|---|
| Materials | $2,400 - $3,700 |
| Labour | $145 - $260 |
| Total | $2,490 - $3,885 |
Potential Additional Items
| Description | Trade | Est. Cost | On-Site Trigger |
|---|---|---|---|
| Supply and install a new hot water tank drain pan if the existing pan is found damaged or non-compliant. | Plumber | $100 - $200 | Existing drain pan found cracked, leaking, or wrongly sized once the old tank is pulled. |
| Supply and install a new gas shut-off valve if the existing valve is seized or non-compliant. | Gas Fitter | $70 - $110 | Existing gas shut-off valve won't operate or shows signs of leaking during disconnect. |
The final cost may shift once a contractor confirms site conditions.
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View Other Estimates
View Other Estimates
See other projects in Toronto or in related trades.
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