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Electricity prices updated November 1, 2026
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Last reviewed November 2, 2026
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A practical guide to insulating existing walls in Ontario homes: dense-pack, interior and exterior options, typical costs, moisture risks and when it pays.
, 6 min read
How to prevent ice dams in Ontario: why they form, why attic air sealing matters more than ventilation, safe removal, and what roof heating cables really cost.
, 6 min read
Crawl space insulation in Ontario explained: sealed vs vented crawl spaces, insulating walls or floors, vapour barriers, radon, frozen pipes and typical costs.
, 6 min read
Do energy-efficient window coverings and window film save money in Ontario? Compare cellular shades, curtains, shrink film, low-e film and exterior awnings.
, 5 min read
How to insulate an Ontario basement safely: moisture control first, interior vs exterior options, rim joist sealing, R-20+ targets, typical costs and savings.
, 5 min read
An honest look at window and door upgrades in Ontario: U-factors, ENERGY STAR ratings, typical costs, realistic savings, repair options and available rebates.
, 5 min read
Find and fix the air leaks that drive up Ontario heating bills: blower door tests, ACH50 targets, priority leak spots, DIY vs pro work and ventilation basics.
, 5 min read
How much attic insulation an Ontario home needs, blown-in vs batt options, typical costs, air sealing first and the Home Renovation Savings rebate of $1,250.
, 6 min read
What an EnerGuide home energy assessment involves in Ontario, what it costs, how the blower door test works, and how assessments unlock larger rebates.
, 5 min read
Weatherstrip and insulate the attic hatch
An unsealed attic hatch is a major air leak in many homes. Weatherstripping plus a piece of rigid foam on top costs under $50.
Air seal and insulate basement rim joists
Rim joists are often leaky and uninsulated. Sealing them with foam and adding rigid insulation can noticeably reduce drafts and heat loss.
Replace worn door weatherstripping and sweeps
If you can see daylight or feel a draft around an exterior door, the seals need work. New weatherstripping costs roughly $20–$50 per door.
Caulk gaps around pipes, wires and vents
Small holes where services pass through walls and ceilings add up to a large leak. Use fire-rated sealant around chimneys and flues.
Use window insulation film on drafty windows
Shrink-film kits cost a few dollars per window and reduce drafts and heat loss through old single-pane glass for the winter.
Top up attic insulation to R-50 or more
Many older Ontario homes have only R-12 to R-20 in the attic. Upgrading toward R-50 to R-60 often cuts heating and cooling losses noticeably, and HRS has offered up to $1,250 for standalone attic insulation.
