No-assessment path
Attic insulation
Scales with starting R-value: up to $1,250 from ≤R-12, $1,000 from R-12–25, $800 from R-25–35.
Cathedral ceiling / flat roof
Separate measure from attic insulation.
Assessment-required path (bigger amounts)
This tier needs a home energy assessment (about $600, refunded as a rebate), at least two qualifying upgrades, and an extra $500 bonus for completing three or more.
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 sub-categories.
Crawlspace
Crawlspace wall up to $1,200, plus crawlspace ceiling up to $1,200 — two separate measures.
Exposed floor
Attic insulation (bundled)
Same attic work pays more bundled into this tier than the no-assessment path above.
Cathedral ceiling (bundled)
Same cathedral ceiling work pays more bundled into this tier.
Bundle attic insulation for more money
Attic and cathedral-ceiling insulation are available on the no-assessment path (up to $1,250 / $750), but the same work pays more if bundled into the assessment-required tier instead: up to $1,500 for attic and $780 for cathedral ceiling/flat roof.
Installers in Kingston
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Common questions
How much is the attic insulation rebate in Kingston?
Up to $1,250 on the no-assessment path, scaling with your starting R-value ($1,250 from ≤R-12, $1,000 from R-12–25, $800 from R-25–35). The same attic work pays up to $1,500 if bundled into the assessment-required tier instead.
Do I need a home energy assessment for insulation rebates in Kingston?
Only for the deeper tier (exterior wall, foundation, crawlspace, exposed floor, or bundled attic/cathedral ceiling). That tier requires an assessment costing about $600, refunded as a rebate, plus at least two qualifying upgrades.
One utility, one water utility, one name: Utilities Kingston
Kingston is unusual in that its electricity, water, and gas all run through a single municipally-owned operator, Utilities Kingston, rather than separate providers. That consolidation is convenient for your monthly bill but doesn't touch your insulation rebate, the amounts on this page are set by the province and don't shift based on who bills your electricity. The reason to still have Utilities Kingston's number handy: if you're bundling insulation with an assessment-tier upgrade that adds electrical load, they're the single point of contact for panel-capacity sign-off, and worth asking whether any local incentive has been added on top of the provincial program.
What -29.2°C looks like in a heat-loss bill, not just a headline
Kingston's 10-year climate record (2015-2024) shows an average January low of -9.0°C, with the coldest single night dropping to -29.2°C. Insulation doesn't care about the headline number so much as the accumulated hours spent near it, a wall or attic with gaps in its R-value bleeds heat proportionally to how far below room temperature the outside air sits, and Kingston's winters keep that gap open for months at a stretch. That's the real mechanism behind the payback timeline this rebate is built around, not just a general "it gets cold" appeal.
Next steps
View all Kingston rebate programs → or check the official Home Renovation Savings Program site → for the current source of truth.