Calgary is a beautiful city, but it's not exactly gentle on windows. Between the dusty chinook winds, spring pollen, construction dust, bird activity, and the inevitable grime that builds up over the winter, your windows take a beating. So how often should you actually get them cleaned?
The Short Answer: Twice a Year (Minimum)
For most Calgary homeowners, spring and fall are the two key cleaning times:
- Spring (April–May): After the winter snow and slush season, your windows have accumulated a winter's worth of road salt spray, grime, and hard water deposits from ice melting on your ledges. Spring cleaning gets everything bright again just as we start spending more time looking outside at the garden.
- Fall (September–October): Summer brings dust, bugs, and pollen. Fall cleaning clears all of that before the winter so you're not looking at a summer's worth of accumulation all season.
When Should You Clean More Often?
Twice a year works well for most homes, but some situations call for more frequent cleaning:
Near busy roads or construction: If your home is on a busy street or near construction, dust and exhaust settle on your windows constantly. Monthly or quarterly cleaning keeps things manageable.
Lots of mature trees: Sticky tree sap, seed pods, and bird droppings under tree canopy can be relentless. You might find that three or four cleanings per year makes sense if you're surrounded by trees.
Homes with many dogs or kids: Nose prints, hand smears, and general indoor fingerprinting happen fast in active households. Many families opt for quarterly interior window cleaning.
Before listing your home for sale: This one's a must. Clean windows make an enormous visual difference when buyers view your home. The difference between dirty and clean windows can genuinely affect how buyers feel about a property.
After a major storm: Calgary gets some spectacular storms. A hail storm with heavy rain can leave your windows covered in spots and residue. It's worth a quick clean after a major weather event.
Spring Cleaning: What to Expect
After a Calgary winter, your windows have dealt with:
- Freezing rain and sleet (which leaves mineral deposits as it dries)
- Road salt splash from vehicles (especially on lower-floor windows on busy streets)
- Snow melt running down glass (hard water marks from the minerals in Calgary's water)
- A winter's worth of indoor condensation deposits on the interior
Spring window cleaning should include both interior and exterior, plus frame and sill wiping. This is also a good time to inspect for any window seals that may have been damaged by the cold.
Fall Cleaning: What to Expect
By fall, Calgary windows have accumulated:
- Spring and summer pollen (heavy in May and June, then again with ragweed in August)
- Bug activity (especially on south-facing windows)
- Summer dust and haze from wildfire smoke (unfortunately common in recent summers)
- UV yellowing on vinyl frames that a good cleaning can help minimize
Fall cleaning is especially satisfying because it sets you up to enjoy the cozy indoor season with clear, clean windows looking out at the snow.
Professional vs. DIY Window Cleaning
You can certainly DIY your window cleaning — a squeegee, bucket, and some dish soap gets the job done on ground-floor windows. But professional cleaning offers several advantages:
- Safety: Upper-storey windows require ladders or water-fed poles. Falls from ladders are among the most common household injuries.
- Results: Professional equipment (especially pure water systems) leaves a streak-free finish that's hard to replicate with DIY methods.
- Time: A professional team can clean an entire home in a fraction of the time it takes to do it yourself.
- Extras: Professionals catch things you might miss — failed window seals, damaged caulking, wasp nests in frames.
Mop Monkeys Window Cleaning in Calgary
Mop Monkeys serves all of Calgary and surrounding areas. We use both the traditional mop & squeegee method and a 3-stage pure water filtration system for spotless results.
Call us at 403-477-0895 for a free same-day quote. Most Calgary homes can be quoted over the phone.

Mop Monkeys
Calgary's family-run window cleaning, gutter cleaning & pressure washing company. 60+ 5-star reviews.


