Attic Insulation Rebate For Caledon Homes, Ontario

The Attic Insulation Rebate Without An Assessment

One route offers an attic insulation rebate without any energy assessment, and the amount is set by how much insulation sits in the attic before work begins.

Starting at R-12 or below and finishing at R-50 earns as much as $1,250.

Starting above R-12 but no higher than R-25 and finishing at R-50 earns as much as $1,000.

Starting above R-25 but no higher than R-35 and finishing at R-50 earns as much as $800.

A cathedral ceiling or flat roof has its own pair of attic insulation rebate amounts: $750 when a ceiling at R-25 or under reaches R-28, and $650 when one at R-12 or under reaches R-20.

Two conditions sit on every tier. The attic insulation rebate can never exceed 50 per cent of the after-tax bill, and the whole reachable attic has to be done, not a cold bedroom's share of it.

Payment on this route goes only to jobs by installers already on the program's roster, and the roster stopped taking new names. As of October 2026 the six names on it are Solidcare, Home Depot, Great Northern Insulation, George Kent, EcoComfort and Brand Insulation. Look the roster up on the program website before you plan around it, because the installer, not the homeowner, files the paperwork on this route.

The Attic Insulation Rebate With An Assessment

The second route opens with a home energy evaluation by a registered energy advisor. From that report you finish two or more upgrades with whichever contractor you choose, and the same advisor then returns for a second visit.

The assessment route pays a bigger attic insulation rebate at each step: up to $1,500 for an attic that begins at R-12 or lower, $1,200 where it starts between R-13 and R-25, and $900 where it starts between R-26 and R-35, all finishing at R-50. A cathedral ceiling or flat roof earns up to $780 here. It also puts money toward both evaluations and adds more for further upgrades, air sealing among them.

If the roster matters to you, this is the route that removes it from the picture. Any contractor's invoice counts once the advisor confirms the before and after numbers.

Who Qualifies For The Attic Insulation Rebate

The applicant has to be the owner. Households that buy natural gas from Enbridge and heat mainly with a gas furnace or boiler can apply, provided the Enbridge account is active. So can grid-connected homes whose main heat is electric, propane, oil or wood. That last group matters in rural Caledon, where many homes have no gas line.

Eligible buildings include detached houses, semi-detached houses, row houses, townhouses that are not stacked, and mobile homes on a permanent base. Rental owners may apply as landlords, and some seasonal cottages make the cut.

Three things close the door: a stacked townhouse, a house you have occupied for half a year or less, and any address that Enbridge, Save on Energy or another Ontario program has already paid an attic rebate on.

Paperwork For Your Attic Insulation Rebate

Each attic insulation rebate turns on two numbers: the R-value before the job and the R-value after it. Our inspection photos date-stamp the starting depth, and the invoice states the final R-value and how many square feet were done. Attic air sealing gets its own line, in case the assessment route counts it as an upgrade.