What does a tankless water heater cost in Erin?

A tank-to-tankless conversion in Erin runs $4,200 to $6,400 installed. A straight tankless-to-tankless swap is $3,200 to $4,600.

Will it save me money?

Most GTA households cut water-heating energy use by 25 to 35 percent, and the unit lasts roughly twice as long as a tank.

Do I need a bigger gas line?

Often yes on older homes. The calculator includes an allowance so your quote is not a surprise.

4.9★ from 743 GTA homeowners

Tankless Water Heater Installation Cost in Erin — Get Your Price Instantly

High-efficiency tankless units supplied, vented and commissioned. See real tankless water heater installation prices in Erin in under 60 seconds.

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Typical tankless water heater installation prices in Erin
Job type	Typical price
Straight tankless swapLike-for-like replacement	$3,200 – $4,600
Tank to tankless conversionNew venting and condensate	$4,200 – $6,400
With gas line upsizeIncludes permit and TSSA sign-off	$5,200 – $7,800

Ranges reflect Erin labour and material costs. Your calculator result is tailored to your answers.

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Licensed, insured, WETT & TSSA certified · 4.9★ from 743 GTA reviews

What Erin homeowners say

Bundled two services, saved the trip fee
Had the chimney and the dryer vent done on the same visit. Cheaper and half the disruption.

Farah N. · 2025-12-27

A real person answers the phone
No call centre, no chasing. Booked in two minutes and got a text when the truck was on the way.

Ryan K. · 2026-02-28

Reliable across three jobs
Used them for a sweep, a dryer vent, and a fireplace service. Same standard every time and the same technician twice, which I appreciated.

Helena B. · 2026-04-17

Documentation on everything
Photos, readings, and a written summary after every visit. Makes it easy to keep records for the house file.

Doug T. · 2026-01-11

Tankless Water Heater Installation pricing questions

What does a tankless water heater cost in Erin?: A tank-to-tankless conversion in Erin runs $4,200 to $6,400 installed. A straight tankless-to-tankless swap is $3,200 to $4,600.
Will it save me money?: Most GTA households cut water-heating energy use by 25 to 35 percent, and the unit lasts roughly twice as long as a tank.
Do I need a bigger gas line?: Often yes on older homes. The calculator includes an allowance so your quote is not a surprise.

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Tank Water Heater Installation in ErinGas and electric tank replacement, same-day where possible.

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