Gas Pool Heater Line Toronto 2026

# Gas Pool Heater Line Toronto 2026

A natural gas pool heater is the highest-input outdoor gas appliance most Toronto homeowners ever buy. A typical residential pool heater runs 200,000 to 400,000 BTU/h — three to five times the load of a built-in BBQ. That input level changes everything about the gas line: pipe diameter, run length, Enbridge meter capacity, regulator sizing, and often the home's gas service line itself.

This RenoHouse cluster post explains how a pool heater gas line is sized, permitted, and installed in Toronto in 2026, and what realistic CAD pricing looks like.

Our role. RenoHouse coordinates TSSA G2 licensed gas-fitter subcontractors. Pool heaters at or under 400,000 BTU/h are a G2 scope; above 400,000 BTU/h requires a G1. We do not perform gas-fitting in-house. The G2 (or G1) sub does the install and the pressure test; RenoHouse coordinates the permit, the Enbridge service call, the trench, and the equipment pad.

Typical Pool Heater BTU Inputs

The BTU rating of a residential gas pool heater scales with pool volume, desired temperature rise, and how quickly the homeowner wants to bring the pool up to temperature.

• Small inground pool (under 20,000 gal): 200,000 – 250,000 BTU/h
• Standard inground pool (20,000 – 30,000 gal): 300,000 – 350,000 BTU/h
• Large inground pool (over 30,000 gal) or fast warm-up: 400,000 BTU/h
• Hot tub / spa heater (smaller appliance, separate): 80,000 – 200,000 BTU/h

Common Toronto pool heaters: Hayward H-Series, Raypak P-Series, Pentair MasterTemp, Jandy LXi.

Pipe Sizing Drives the Cost

The single biggest cost driver on a pool heater gas line is pipe diameter. CSA B149.1 Section 6 capacity tables determine what diameter is required to deliver a given BTU/h over a given length without exceeding the allowable pressure drop.

A 400,000 BTU/h pool heater on a 60-foot run from a 7" w.c. residential meter typically needs 1-1/4" black iron or equivalent CSST. Run length over 80 feet may push the required diameter to 1-1/2". This is significantly larger and more expensive pipe than a typical BBQ line (which is often 1/2" or 3/4").

The G2 sub does this calculation. It is not a homeowner judgment call. A pipe undersized for the load will cause the heater to short cycle, fail to ignite consistently, or trip its low-pressure switch.

Enbridge Meter and Service Upgrade — Often Required

A 300,000+ BTU/h pool heater added to an existing home's load (furnace, water heater, range, dryer) frequently exceeds the 250 cfh rating of a standard residential meter. Enbridge response options:

• Meter swap to 425 cfh or 630 cfh: free, 2 to 6 weeks scheduling delay
• Service regulator swap: free, scheduled with the meter swap
• Service line upgrade (the line from the street to the meter): free if Enbridge determines the existing service line is undersized for the new load. Requires Enbridge to dig from the street to the meter, which may involve sidewalk and lawn restoration. Schedule add: 4 to 12 weeks depending on Enbridge availability.

The G2 sub initiates the service call. RenoHouse coordinates the timing so other outdoor work (deck, hardscape, fence) is sequenced around the Enbridge schedule. For full Enbridge coordination detail, see [Enbridge Gas Connection Coordination Toronto](/blog/enbridge-gas-connection-coordination-toronto).

Equipment Pad Location and Clearances

The pool heater sits on an equipment pad with the pump, filter, and any salt-cell or chlorinator. The pad location drives the gas line route. Code requirements for the heater:

• Combustion air intake clearance: per the manufacturer (typically 12" to 36" from any wall on the intake side)
• Vent clearance to property line, opening windows, and combustibles: per the manufacturer and CSA B149.1
• Clearance to pool water surface and pool decking: per the manufacturer (typically 5 ft minimum from water)
• Outdoor shut-off ball valve at the building exit and at the heater itself: CSA-rated, accessible

The G2 sub verifies the pad layout meets the heater's installation manual and the code before piping.

Burial Depth and Trench Routing

The same code applies as any outdoor gas line: 18" minimum cover in lawn or non-vehicular areas, 24" under driveways or parking pads, with tracer wire and tracer tape. Pool heater lines often run under the pool deck or interlock — the trench has to be planned before the deck is poured or the interlock is laid. For full detail, see [Gas Line Burial Depth Toronto Code](/blog/gas-line-burial-depth-toronto-code).

Pressure Test for High-BTU Lines

The same CSA B149.1 Section 6.21 pressure test applies — 1.5x operating pressure (or minimum specified value), at least 10 minutes hold with no measurable drop on a calibrated gauge, before backfill. Higher-BTU lines are sometimes tested at higher pressures (per the G2 sub's protocol and any TSSA requirements). The test is documented and witnessed by the inspector if a permit visit is required.

Realistic 2026 CAD Pricing

For a Toronto pool heater gas line (TSSA G2 sub labour, materials, permit, pressure test, basic trench and backfill — but not the heater itself, the equipment pad, or the pool):

• 40–60 ft run, 250,000–300,000 BTU/h heater, no Enbridge upgrade: $2,500 – $3,500
• 60–80 ft run, 350,000–400,000 BTU/h heater, no Enbridge upgrade: $3,000 – $4,000
• Long run (80–120 ft) with multiple direction changes, under deck or interlock: $3,500 – $4,800
• Add Enbridge meter upgrade: $0 (no charge, but 2–6 week schedule add)
• Add Enbridge service line upgrade: $0 (no charge, but 4–12 week schedule add)
• G1 license required (heater over 400,000 BTU/h): add $400 – $800

The pool heater itself is typically $4,500 to $9,000 for a residential unit, supplied separately by the pool builder or homeowner.

Cross-Linked Reading

• Pillar: [Outdoor Gas Line Installation Toronto 2026: Complete Guide](/blog/outdoor-gas-line-installation-toronto-2026-complete-guide)
• [Enbridge Gas Connection Coordination Toronto](/blog/enbridge-gas-connection-coordination-toronto)
• [TSSA G2 Permit Outdoor Gas Toronto](/blog/tssa-g2-permit-outdoor-gas-toronto)
• [CSST vs Black Iron Pipe Outdoor Toronto](/blog/csst-vs-black-iron-pipe-outdoor-toronto)

Get a Coordinated Quote

For a coordinated pool heater gas line quote — including the Enbridge call if your load triggers it — head to [/services/plumbing/outdoor-gas-line-installation](/services/plumbing/outdoor-gas-line-installation).