Home energy audits in Westmount, London

What Westmount homes are made of

Southwest London's Westmount mixes low-density houses and townhomes with higher-density apartments, as its developer planned (Wikipedia ↗). Much of the housing dates from the 1970s and 1980s: framed walls with fibreglass batts, attics well short of today's R-50 target, and forced-air heating now decades old.

What an audit usually finds here

• Attics ready for a top-up — typically the first and cheapest win.
• Air leaks at rim joists, attic hatches and plumbing and wiring penetrations.
• Original windows and patio doors near the end of their life.
• Townhouse party walls and shared attics that leak between units.
• Furnaces and air conditioners reaching replacement age together — the moment to consider a heat pump.

Tests to ask for

• The blower door test, with a thermal scan of the attic plane and rim joists.
• An attic inspection, including a check for vermiculite in attics insulated before 1990.
• A heat-loss calculation before replacing the furnace or air conditioner.

The rebates that fit — including for townhomes

Detached homes, semis and row or town homes qualify for Ontario's Home Renovation Savings assessment path: attic insulation (up to $1,500), air sealing ($200–$250) and windows ($100 per opening) unlock the $600 assessment rebate with any two. For wall, basement and crawlspace insulation, semis and end units get 75% of the maximum and middle units 50%. Stacked townhouses and apartment buildings don't qualify. Book the assessments through one of the program's seven approved service organizations, and have the follow-up done by December 31, 2026 — the program is only funded through 2026.