How long does a tankless water heater last?

A well-maintained tankless unit lasts 20–25 years. A traditional tank lasts 8–12 years. Annual descaling preserves the heat exchanger and maintains the manufacturer warranty.

Will I need a gas line upgrade?

Likely yes. Tankless gas units draw much more gas than tank-style heaters. Most homes need the gas supply line upsized. We assess this during the quote visit.

Can a tankless water heater run out of hot water?

A properly sized unit will not run out. It heats on demand continuously. We do a load calculation before recommending a unit size to ensure it meets your simultaneous demand.

Tankless Water Heater Installation Toronto

Tankless Options

Water Heater Solutions

From condensing gas units to electric tankless and combi systems — we assess your home's demand and gas line before recommending the right unit.

Gas Condensing Tankless

96–98% efficiency. Rinnai, Navien, Noritz. Heats water on demand — no storage tank, no standby heat loss. Most popular choice for GTA homes with existing gas service. Requires gas line assessment.

Electric Tankless

100% efficient, no gas line needed. Good for point-of-use applications or homes without gas service. Requires 200A electrical panel. Lower flow rate than gas — best for moderate demand.

Tank Water Heater Replacement

Sometimes a standard tank replacement is the right call. If switching to tankless isn't practical (gas line limitations, budget), we install high-efficiency power-vent tank units as a solid alternative.

Transparent Pricing

Water Heater Installation Costs

Written quotes before work begins. Gas line work included in the estimate when needed.

Unit Type	Price Range (Installed)
Gas condensing tankless (Rinnai, Navien, Noritz)	$2,800 – $4,500
Electric tankless	$1,200 – $2,500
Combi unit (heat + hot water)	$3,500 – $6,000
High-efficiency tank replacement	$1,400 – $2,800

Most homes need a gas line upgrade when switching to tankless. We assess and include this cost in our written quote.

Get a Tankless Quote

We assess your current setup, check your gas line sizing, and give you an honest written quote. No pressure, no surprises.

416-827-8676

TSSA-Licensed · Rinnai, Navien, Noritz · Gas Line Work Included

Where We Work

Serving Toronto & All of the GTA

Our technicians are based in Thornhill and cover the entire Greater Toronto Area — same-day service available across most of our coverage zone.

Toronto & Inner Ring

Toronto, North York, Scarborough, Etobicoke, East York, York. We cover the entire 416 area code and have technicians positioned to respond quickly throughout the city.

York Region

Thornhill, Richmond Hill, Markham, Vaughan, Aurora, Newmarket, King City, Woodbridge. Our home territory — fastest response times and deepest familiarity with local building stock.

Peel & Durham Regions

Mississauga, Brampton, Oakville, Ajax, Pickering, Whitby, Oshawa. We service these areas regularly and can provide same-day quotes across most of Peel and Durham Region.

FAQ

Tankless Water Heater Questions

A gas condensing tankless unit runs $2,800–$4,500 installed. Electric tankless units run $1,200–$2,500 installed. Combi units (heating + hot water) cost $3,500–$6,000. Most homes also need a gas line upgrade — we include that in the written estimate.

Likely yes. Tankless units draw 180,000–199,000 BTU/hr when firing — far more than a 36,000–40,000 BTU/hr tank. Most homes need the gas supply line upsized from the meter. We check during the quote visit and include line work in our estimate.

A well-maintained gas tankless unit lasts 20–25 years. A conventional tank lasts 8–12 years. Annual descaling (flushing the heat exchanger) is the main maintenance task in GTA where moderate water hardness causes mineral buildup.

Yes, if the unit is properly sized. We calculate your peak demand (simultaneous fixtures) and recommend the right BTU output. A 199,000 BTU unit handles 2–3 simultaneous showers. Very large homes with high simultaneous demand may need two units in parallel.

Yes. We install and service tankless water heaters in Toronto, Thornhill, Richmond Hill, Markham, Vaughan, North York, Scarborough, Etobicoke, Mississauga, Brampton, Ajax, and Pickering. Based in Thornhill, we offer same-day service for most GTA locations.

Yes. A failed water heater is a significant disruption and we prioritize these calls — same-day diagnosis across most of the GTA. Call 416-827-8676 and we'll give you a real arrival time, not a 4-hour window.

Yes. All gas appliance installations require a TSSA permit and inspection. We handle all permit applications and arrange the TSSA inspection — it's included in our installation price and ensures the job is done legally and correctly.