How much you get
No assessment needed: attic & cathedral ceiling
Attic, from ≤R-12
Attic, from R-12–25
Attic, from R-25–35
Cathedral ceiling / flat roof
Assessment required: walls, foundation, crawlspace
Exterior wall
Foundation / basement wall
Basement slab
Foundation header
Crawlspace wall
Crawlspace ceiling
Exposed floor
The attic pays more here than on the no-assessment path
If you're already booking an assessment for other upgrades, do attic insulation through this tier instead, up to $1,500 (vs. $1,250) and $780 for cathedral ceiling (vs. $750).
Local programs in Oshawa
Oshawa Power (electricity) and Enbridge Gas (natural gas) don't run a separate insulation rebate. Durham Greener Homes, the regional program covering Oshawa, offers a Deep Retrofit Rebate of up to $10,000 plus loan financing through Rapport and Pathwise credit unions, and insulation is one of the measures it funds, but you need to start with a free coaching session before it applies. Region of Durham program details →
How to claim it
- For attic: confirm eligibility, pick a participating contractor, get it installed, contractor submits the application
- For walls/foundation: book an energy assessment first, then follow the assessment-path steps
Browse HVAC, solar, and electrical installers near Oshawa →
Common questions
What insulation rebates are available in Oshawa?
Oshawa homes qualify for the same provincial HRSP insulation tiers as the rest of Ontario. On top of that, Durham Greener Homes — the regional program covering Oshawa — offers its own Deep Retrofit Rebate of up to $10,000 that can include insulation, plus loan financing through local credit unions, but you start with a coaching session to see what applies to your project.
Do I need an energy audit first in Oshawa?
Yes, for walls, foundation, and crawlspace insulation. Attic insulation doesn't need a pre-retrofit assessment under HRSP; a participating contractor can install and submit it directly.
Oshawa Power bills you, the province pays you
Oshawa Power (Oshawa PUC Networks) is the city-owned utility on your monthly bill, but it has no say over your insulation rebate; that money comes entirely from the province. What Oshawa Power does control is your account for electrical service: if a contractor's scope grows to include an electrical panel check during the retrofit, Oshawa Power is the call to make. We haven't turned up an Oshawa Power insulation incentive stacked on the provincial program, so don't plan around one unless an installer can show it to you in writing.
Why Oshawa's cold snaps make this rebate pay for itself faster
Heat loss is a straight math problem: the bigger the gap between your indoor temperature and whatever it's doing outside, the faster warm air leaks out through an under-insulated attic or wall. Oshawa's 10-year data (2015-2024) puts the average January low at -7.4°C, with a recorded low of -24.8°C on the worst nights, and every one of those degrees below freezing is your furnace working overtime to replace heat that never should have escaped. That's the entire case for closing the gap now rather than waiting.
Next steps
View all Oshawa rebate programs → or check the official Home Renovation Savings Program site → for the current source of truth.