Attic Insulation Rebate Ontario 2026 — Up to $1,250
Rates last verified: August 16, 2026 · against homerenovationsavings.ca. Programs can change or close at any time — confirm before signing a contract.
Quick answer
Up to $1,250 for attic insulation, up to $750 for cathedral ceiling or flat roof. No energy assessment required. Work must be done by a participating contractor — no DIY.
Why attic is the easy win
Standalone attic insulation was introduced as part of HRS in August 2025. Why homeowners pick this stream:
- • No home energy assessment required
- • Simple process — one contractor handles everything
- • Typical project cost $2,000-$3,000, rebate covers ~50%
- • Real energy savings on heating and cooling
Exact rebate amounts
Rebate is calculated at 50% of the total attic insulation cost (after tax), up to the maximums below. Your starting insulation level determines the max.
Attic
| Current insulation | Target | Max rebate |
|---|---|---|
| Less than or equal to R-12 | R-50 | $1,250 |
| Greater than R-12 to R-25 | R-50 | $1,000 |
| Greater than R-25 to R-35 | R-50 | $800 |
Cathedral ceiling / flat roof
| Current insulation | Target | Max rebate |
|---|---|---|
| Less than or equal to R-12 | R-20 | $650 |
| Less than or equal to R-25 | R-28 | $750 |
Eligibility — who qualifies
- ✓ You own the home where the insulation is installed
- ✓ You live in an eligible property type (detached, semi, row, townhome, mobile home on permanent foundation)
- ✓ Installation is done by a participating attic insulation contractor
- ✓ Upgrade brings insulation to at least the minimum R-value shown above
Who's doing this work
Note: new contractor registration for the attic insulation stream is currently closed — only contractors already on the official Participating Insulation Contractors List can deliver this rebate, and that list is service-area dependent and changes. We deliberately don't reprint names here: a stale list could send you to a contractor who can no longer file your rebate. Check the official directory for your postal code — and note the program's own caveat that being listed is not an endorsement:
Official attic stream page & contractor directory →
One more official rule worth knowing before you book: one attic-stream rebate per property — once a rebate is paid for your home, that stream's file is closed. If you might bundle more envelope work later, read the assessment path first.
Verify the current list and contact information at homerenovationsavings.ca/help-and-support.
Can I stack with other programs?
Limited stacking is allowed:
- ✓ You can stack with rebates from other organizations (utilities, municipalities)
- ✗ You cannot stack with other Enbridge Gas, IESO Save on Energy, or Government of Ontario programs
- • Combined total cannot exceed 50% of the measure cost (after tax)
Find your rebate
Calculate your attic rebate
Answer a few quick questions to see exactly what your attic insulation upgrade qualifies for.
Calculate my rebate →Independent homeowner tool. Not affiliated with the Government of Ontario.
Frequently asked questions
How much is the Ontario attic insulation rebate?
Up to $1,250 for attic insulation, up to $750 for cathedral ceiling or flat roof. The exact amount depends on your current insulation level — lower existing R-value = higher rebate.
Do I need an energy assessment for attic insulation?
No. Standalone attic insulation is one of the few HRS upgrades that doesn't require an energy assessment. Your participating contractor handles everything.
Can I do attic insulation myself and still get the rebate?
No. Only upgrades installed by a participating contractor qualify. DIY attic insulation is not eligible for the rebate.