How Much Can You Save with Ontario Insulation Rebates in 2026?

If your attic is under-insulated, you are quietly paying for it every month, on your heating bill in winter and your cooling bill in summer. The good news for 2026 is that Ontario homeowners have several rebate programs that can cover a large share of the cost of fixing it, and in many cases the work can be done with nothing paid up front. Here is a clear, no-hype look at what is available and what you can realistically expect to save.

The rebate programs available in Ontario in 2026

There are a few programs worth knowing about, and they can often be combined. The details and funding levels are set by the program administrators and can change, so treat the figures below as the widely-published ranges rather than a guarantee for your specific home.

Home Efficiency Rebate Plus (HER+)

Delivered in Ontario through Enbridge Gas in partnership with the federal government, Home Efficiency Rebate Plus offers up to $5,000 across a range of eligible home upgrades. Insulation is one of the most popular and cost-effective categories. The exact amount depends on how much you improve your home’s efficiency and which measures you complete, so a full attic top-up is usually one of the higher-value items on the list.

Enbridge Gas insulation rebates

Enbridge Gas administers the insulation portion of these programs and ties rebates to the level of insulation you add, measured in RSI or R-value. The more you increase your attic’s thermal resistance above its current level, the larger the rebate you typically qualify for. That is why a proper pre-work assessment matters, it establishes your starting point.

Canada Greener Homes

The federal Canada Greener Homes initiative has supported insulation and other retrofits and continues to work alongside provincial programs. Program structures evolve year to year, so part of our job is confirming which streams are currently open and stacking them correctly for your household.

So how much can you actually save?

For the most common project we handle, a full attic insulation top-up, homeowners in Ontario typically see $1,500 to $2,350 in combined rebates once eligible programs are stacked. Attics deliver strong numbers because heat rises and escapes through the roof faster than anywhere else, so upgrading attic insulation produces a measurable efficiency gain, which is exactly what the rebates reward.

Attic upgrades tend to hit the sweet spot: relatively affordable to complete, high impact on your energy bills, and among the best-supported measures in the rebate programs.

On top of the rebate itself, better attic insulation keeps your home more comfortable year-round, more even temperatures between floors, fewer cold drafts in winter, and a cooler upstairs in summer. Those savings continue long after the rebate cheque clears.

The $0 upfront model explained

One of the biggest barriers to home upgrades is the cash outlay. That is why most homes we serve pay $0 upfront. Because we handle the rebate process end to end, the expected rebates are factored into your project from the start, so you are not floating thousands of dollars while you wait for paperwork to clear. For most standard attic projects, the rebates cover a substantial portion of the cost.

Every project begins with a free assessment, where we inspect your attic, measure your existing insulation, and tell you honestly what you qualify for and what the numbers look like. No obligation.

We handle all the paperwork

Rebate applications are where a lot of homeowners get stuck, the forms, the pre and post assessments, the documentation of R-values, and the submission deadlines. PolarCore is certified for the Ontario Home Energy Rebate Program, and we manage the full process for you:

• Confirming which 2026 programs your home is eligible for
• Coordinating the required energy assessments
• Documenting the before and after insulation levels correctly
• Preparing and submitting the rebate applications on your behalf

As an Owens Corning authorized installer of PINK NEXT GEN® materials, we also make sure the products going into your attic meet the standards these programs require, which protects your eligibility.

Is your home a good candidate?

Homes with older or thin attic insulation, ice dams in winter, uneven temperatures between rooms, or high heating bills are usually strong candidates. The only way to know your exact rebate figure is a proper assessment, since it depends on your current insulation level and which programs are open when you apply. You can learn more about our attic insulation service or review the full list of communities we cover across our Ontario service area.

Book your free assessment

Ontario’s 2026 insulation rebates can meaningfully lower the cost of a warmer, more efficient home, but funding levels and program windows do change, so it pays to act while the programs are active. Let us do the heavy lifting: we will assess your attic, calculate your realistic savings, handle every form, and complete the work with $0 upfront for most homes. Book your free assessment online today, or call us at (647) 740-9246.