Calgary summers are short, bright, and surprisingly hard on a house. We swing from +30°C afternoons to evening hailstorms, often in the same week. The upside: summer is the one window where almost every part of your home — roof, siding, deck, mechanical — is accessible and dry enough to actually work on. The homeowners who use that window well spend a lot less in the fall.
Here's how we think about summer when we're caring for a home. We organize it the same way we organize our quarterly visits: keep it cool, keep it dry, and get the exterior sorted while the weather allows.
Keep it cool
Your cooling system works hardest on the few days it's needed most, so a little prep goes a long way.
- Change your furnace/AC filter. A clogged filter chokes airflow and makes the system run hot. Check it monthly through summer; replace every 1–3 months depending on type and pets.
- Clear the A/C condenser. The outdoor unit needs breathing room. Cut back grass and shrubs to about 60 cm on all sides, and gently rinse the fins clear of cottonwood fluff and dust with the power off.
- Reverse ceiling fans to spin counter-clockwise so they push cool air down — an easy way to take load off the A/C.
Keep it dry
Moisture and trapped lint are the quiet summer risks — one is a comfort and mould issue, the other is a genuine fire hazard.
- Clear the dryer vent. Lint build-up in the vent run is one of the most common — and most preventable — house fire causes. Clean the full duct, not just the lint trap.
- Lubricate and check windows and doors. Summer is the time to free up sticking sliders, oil hinges, and inspect weatherstripping while it's warm and pliable.
- Watch indoor humidity. Aim for roughly 40–50%. Use bathroom and range fans, and make sure they vent outside, not into the attic.
Get the exterior sorted
This is the part Calgary homeowners most often miss. Our building envelope takes a beating from freeze-thaw and hail, and summer is when you can see and fix the damage.
- Inspect the roof and gutters — especially after any hail. Look for dented or missing shingles, lifted flashing, and granule loss collecting in downspouts.
- Check grading and drainage. Soil should slope away from the foundation. Downspouts should discharge at least 1.5–2 m from the house. Most wet basements start here.
- Look over siding, caulking, and deck. Re-seal gaps, check for rot at ground contact, and refresh deck finish before fall.
- Test exterior hose bibs and irrigation for leaks now, while a slow drip is a minor fix rather than a frozen-pipe surprise later.
A word on hail
Calgary is one of the most hail-prone cities in Canada, and storm damage often hides until it leaks. After a significant storm, do a ground-level scan of the roof, screens, siding, and any rooftop vents. If you spot impact marks, document them with photos and dates — it makes any insurance conversation far easier.
The 15-minute monthly check: filter, A/C unit clear, dryer vent and lint trap, a walk-around for new roof/siding/grading issues, and a quick look for interior moisture. Five things, once a month, prevent most summer surprises.
When to bring us in
Plenty of this is genuinely DIY. The judgment calls — is that hail damage cosmetic or a future leak, is that grading issue why the basement smells, does the A/C short-cycle because of the filter or something bigger — are where builder-level eyes save money. That's exactly what our quarterly stewardship visits are for: we run this checklist for you, catch the small issues, and document everything so nothing slips.