Deep energy retrofit: whole-home sequencing

Coordinate envelope, moisture, ventilation, heating, water heating, electrical and renewables from a measured baseline instead of optimizing each trade in isolation.

VERT / GREEN

Start with building condition, priorities, an energy evaluation and required repairs.

JAUNE / YELLOW

Air sealing or major insulation changes can alter moisture, depressurization and heating loads; systems must be reconsidered together.

ROUGE / RED

Active mould, structural deterioration, unstable combustion or assemblies without a drying strategy: resolve these risks before a deep retrofit.

Interactive triage

EnerGuide or equivalent baseline
Keep pre-work results to compare improvements. Major insulation without ventilation plan
Cross-check airtightness, ventilation and new heating load before close-in. Unresolved moisture/structure
Fix the cause before burying the problem under a new envelope. Several systems replaced together
Create one integrated sequence and commissioning checkpoints.

Useful tools and data

EnerGuide/HOT2000 report if available
System sequencing plan
Budget and pre/post metrics

What the professional checks

Model loads and savings
Coordinate envelope/mechanical systems
Define pre/post tests

Official sources

Checked 2026-08-22.

Related path

Continue with the right tools

These links connect this page to the next useful checks and decisions without repeating the full content.

Track energy consumptionTrack kWh, costs, billing periods and consumption intensity over time.Open →Prepare home electrificationDocument panel, service, major loads and future projects before electrical assessment.Open →Estimate solar potentialTurn an official municipal yield into production, savings and simple payback.Open →Compare repair versus replacementCompare two strategies over the same horizon with recurring costs and residual value.Open →Check financial assistanceReview relevant Canadian and provincial programs before committing to work.Open →