Tankless Water Heater Services in Oshawa

Tankless vs Tank — Which is Right for Oshawa Homes?

Feature	Rinnai Tankless	Traditional Tank
Hot Water	♾️ Unlimited, on-demand	❌ Limited to tank capacity
Energy Use	⚡ 0.96–0.98 UEF efficiency	0.60–0.70 UEF (wastes energy)
Lifespan	🕐 20+ years	⚠️ 8–12 years
Space	📦 Wall-mounted, compact	Large floor footprint
Warranty	15 yr heat exchanger / 5 yr parts	Typically 6 years
Rebates	✅ Enbridge HER+ eligible	❌ Typically not eligible

Frequently Asked Questions – Tankless Water Heaters in Oshawa

How much does tankless water heater installation cost in Oshawa?

Tankless water heater installation in Oshawa typically costs between $3,000 and $5,500 fully installed, including the unit, venting, gas line work, and permits. After available Enbridge HER+ rebates of up to $1,000, your net cost can be reduced significantly. Hawk Home Services provides free written quotes — no surprises, no pressure.

Do I need a permit to install a tankless water heater in Oshawa?

Yes. A mechanical permit from the Oshawa building department (Durham Region) is required for tankless water heater installations. Hawk Home Services manages the permit process, ensuring your installation is fully compliant with Ontario Building Code and TSSA requirements. We’ve handled hundreds of Durham Region installations.

How long does installation take?

Most tankless water heater installations in Oshawa take 4–8 hours and are completed in a single visit. This includes removing your old equipment (including returning any rented tanks), installing and commissioning the new unit, and a full system test. We clean up completely before leaving.

Is Rinnai or Navien better for Oshawa homes?

Both are excellent. Rinnai SENSEI® leads on warranty length and build quality, while Navien NPE/NPN is popular for its built-in recirculation technology (instant hot water at all taps). Both are ENERGY STAR-certified and eligible for Enbridge rebates. Our technicians will recommend the best fit based on your home’s size, plumbing layout, and budget.

What rebates are available for tankless water heaters in Oshawa?

Oshawa homeowners can qualify for the Enbridge Home Efficiency Rebate Plus (HER+) — up to $1,000 for qualifying high-efficiency tankless units. The Canada Greener Homes initiative may also provide additional federal rebates. Ask our team about currently available amounts when you book your free quote — we’ll help maximize your savings.

What areas of Oshawa do you service?

We service all of Oshawa — L1G, L1H, L1J, L1K, L1L — including Lakeview, Kedron, Pinecrest, McLaughlin, Eastdale, and Farewell. Hawk Home Services also serves neighbouring Ajax, Whitby, Oshawa, and the wider Durham Region.