No-assessment tier: attic insulation
Peterborough homeowners can claim attic insulation rebates without a home energy assessment. The amount scales with your starting R-value.
Starting at ≤R-12
Starting at R-12–25
Starting at R-25–35
Assessment-required tier: bigger rebates
If you get a home energy assessment (about $600, refunded as a rebate) and complete at least two qualifying upgrades, you unlock a wider set of insulation rebates, and an extra $500 bonus for completing three or more upgrades.
Exterior wall
To at least R-20 across 100% of exterior wall area.
Foundation / basement wall
Plus basement slab (up to $500) and foundation header (up to $300) as separate measures.
Crawlspace
Crawlspace wall up to $1,200, plus crawlspace ceiling up to $1,200.
Exposed floor
Attic insulation (assessment tier)
Pays more here than the no-assessment path above.
Cathedral ceiling / flat roof
Attic insulation pays more if you bundle it into the assessment tier
The same attic work pays $1,250 on the no-assessment path but up to $1,500 if you bundle it into the assessment-required tier instead, worth doing the math before you apply.
Financing with Better Homes Peterborough
Up to $50,000 at 4.5%, repaid through your property tax bill
Insulation is an eligible upgrade under Better Homes Peterborough, the city's retrofit loan delivered through EnviroCentre, relaunched February 19, 2026 through March 2029. It offers a secured loan up to $50,000 at 4.5% interest over 15 years through your property tax bill, or an unsecured loan through Kawartha Credit Union. Call 1-888-284-9417 or visit betterhomesptbo.ca.
Insulation installers in Peterborough
We haven't independently vetted specific insulation installers in Peterborough yet, so we're not going to invent names or star ratings for this page. Browse our installer directory to compare local companies yourself, or run the free assessment below and we'll help connect you with someone once we have vetted options in your area.
Browse the HomePowerRebate installer directory →
Common questions
How much is the attic insulation rebate in Peterborough?
Without an assessment, up to $1,250 if your attic starts at R-12 or below, scaling down to $1,000 for R-12–25 and $800 for R-25–35. If you go through a full home energy assessment and complete two or more qualifying upgrades, the same attic work pays up to $1,500 instead.
Do I need an energy assessment for insulation rebates in Peterborough?
Not for attic insulation on its own, that's available with no assessment. But exterior wall, foundation, crawlspace, and exposed floor insulation all require a home energy assessment (about $600, refunded as a rebate) plus at least two qualifying upgrades.
One of the few Ontario cities that still owns its utility
Peterborough Utilities Commission is a municipally-owned distributor, one of a shrinking number in Ontario that hasn't been folded into a regional merger like Alectra or Elexicon. That local ownership doesn't change your provincial insulation rebate one bit, but it does mean the people answering the phone about a panel-capacity question or a service-connection issue are a genuinely local office, not a call center for a multi-city amalgamation. PUC hasn't published an insulation-specific incentive of its own as far as we can find, so budget around the provincial numbers above unless a contractor shows you otherwise.
Doing the heat-loss math for Peterborough's climate
An attic or wall without enough insulation doesn't just feel drafty, it's actively bleeding dollars every hour the temperature outside sits below room temperature. Peterborough's 10-year climate record (2015-2024) shows an average January low of -11.4°C and a recorded extreme of -31.2°C, which means the heat-loss clock is running hard for a big chunk of the year here. That's the real driver behind how fast the rebate above pays for itself: more cold days means more avoided heating cost per dollar spent closing the gap.
Next steps
View all Peterborough rebate programs → or check the official Home Renovation Savings Program site → for the current source of truth.