Ottawa winter maintenance is about more than getting the snowblower ready. It is about keeping water where it belongs, making sure your heating system is dependable, and spotting small problems before freezing temperatures make them harder to fix.
Whether you own a detached home in Kanata, a townhouse in Barrhaven or an older property closer to downtown, the priorities are similar. The details depend on your home’s age, construction and equipment.
My approach is simple: deal with safety and water first, comfort second, and cosmetic projects later.
1. Give rain and melting snow somewhere to go
Before winter settles in, check your eavestroughs and downspouts for leaves, debris, loose connections and signs of overflow. Look at where the water actually ends up, not just whether the gutters appear clean.
A downspout that empties beside the foundation can leave water exactly where you do not want it. Discharge should flow toward suitable drainage, without creating an icy walkway or sending water toward a neighbouring home.
The Government of Canada recommends checking eavestroughs and downspouts at least twice a year, in fall and spring, with additional checks after severe weather. Hire a professional when access requires unsafe ladder or roof work. Government of Canada drainage guidance
Worth checking: Window wells, basement entrances and low spots where water collected during the last heavy rain. Winter does not make an existing drainage problem disappear.
2. Prepare your heating system, and keep its vents clear
Follow your heating equipment’s maintenance schedule. If service is due, arrange it before you are relying on the system through a prolonged cold spell.
Check the filter and clean or replace it according to the manufacturer’s instructions. Keep supply registers and return-air grilles clear of furniture and stored items. Natural Resources Canada recommends following the equipment manufacturer’s cleaning and servicing procedures. Heating-system maintenance guidance
Outside, identify the heating-system intake and exhaust openings before snow hides them. Keep them clear throughout the season, including after drifting snow or snow removal.
Test smoke and carbon monoxide alarms according to their instructions, and check replacement dates. Review Ottawa Fire Services’ current guidance to confirm your home has the required CO alarm coverage. Ottawa carbon monoxide alarm guidance
Carbon monoxide exposure is a particular concern during colder months, when fuel-burning heating equipment is in use. Never operate a fuel-powered generator or barbecue inside a home or garage. Health Canada
3. Winterize outdoor plumbing before it becomes urgent
Disconnect garden hoses and winterize outdoor taps according to their design. Where applicable, shut off the indoor supply and drain the outdoor line. Have irrigation systems properly winterized, and empty rain barrels before freezing temperatures.
Inside, know where your main water shut-off is and keep it accessible. If you are unsure how your plumbing should be winterized, ask a plumber rather than assuming every tap or system works the same way. Municipal winter-preparation checklist
Ottawa also has properties vulnerable to frozen municipal water-service pipes. If the City has contacted you about that risk, follow its property-specific instructions. Do not assume advice to leave water running applies to every home. City of Ottawa frozen-service guidance
4. Take recurring ice buildup seriously
Large icicles may look seasonal, but recurring ice buildup along the roof edge deserves attention, especially if it comes with ceiling stains or previous leaks.
An ice dam can develop when snow melts higher on the roof and refreezes near the colder edge, trapping water behind it. Natural Resources Canada identifies attic air sealing and adequate insulation as important preventive measures. Roof and attic guidance
The answer is not automatically “add more insulation.” Have a qualified contractor assess heat leakage, insulation and ventilation together.
Do not climb onto an icy roof or chip at ice with tools that could damage the roofing. Arrange professional help for hazardous buildup or suspected leaks.
5. Watch what your windows are telling you
Persistent condensation is worth investigating, but it does not automatically mean your windows need replacing.
Condensation becomes more likely as outdoor temperatures fall or indoor humidity rises. Moisture on the glass can be a prompt to review ventilation and humidity before committing to an expensive window project. Natural Resources Canada condensation guidance
Use bathroom and kitchen exhaust ventilation as intended, and follow the operating instructions for your home’s ventilation system. Wipe up accumulated moisture and investigate recurring wet sills, staining or mould.
The goal is a comfortable home without allowing moisture to collect on cold surfaces.
6. Plan for an outage before the lights go out
Prepare supplies for at least 72 hours, including water, food, flashlights, charged power banks, medications and items your children or pets need.
Hydro Ottawa also recommends planning backup power for essential medical equipment and sump pumps. If you depend on either, understand what will happen when the electricity stops and arrange an appropriate backup plan. Hydro Ottawa outage preparedness
If you will be away, arrange someone to check the property and manage snow around access points and vents. Confirm your insurer’s specific requirements before leaving, rather than relying on a neighbour’s policy or a general rule.
A short routine for the rest of winter
Preparation is only the first step. After significant snowfalls or thaws:
Check accessible heating intakes and exhausts for obstruction.
Keep entrances, steps and escape routes clear.
Look for water collecting near the foundation or basement entrance.
Watch for new ceiling stains or persistent window moisture.
Check the property after snow removal, not just after the snowfall.
For condo owners, confirm which tasks belong to you and which belong to the condominium corporation. Report common-element concerns to management rather than assuming someone has already noticed them.
Protect the home you have, whether or not you are selling
My real estate perspective is that maintenance should come before presentation. Fresh paint cannot resolve a recurring leak, and an attractive front entrance does not replace dependable heating or safe access.
Keep service records, invoices and notes about repairs. They help you manage the property and explain its maintenance history when it is time to sell.
You do not need to complete every project at once. Start with safety concerns, active water problems and overdue servicing, then build a manageable seasonal routine.
Planning a move in Ottawa? Contact Joel Marshall at Marshall & Company to discuss how your home’s condition and preparation fit into your selling plans.
