North Bay winters are not subtle, and neither are the windows that are not ready for one. The draft you barely noticed in October is a cold stripe across the living room by January, and the crank you had to force in the fall is the one that strips in February with the sash half open.
An hour walking the house in the fall, and a repair visit for whatever the walk turns up, is the cheapest comfort money you will spend all year. Here is what to look for, window by window.
Open and close every window once
Every window in the house should open, close, and lock without force. Anything that sticks, drags, grinds, or needs body weight is telling you a part is on its way out, and parts fail at the worst time by preference. A stiff crank, a sash that will not stay up, or a lock that no longer pulls the window snug are all quick repairs in the fall and genuine problems in February.
Locking matters more than people think: on most windows the lock is what compresses the sash into the weatherstripping. An unlocked window is a leakier window, and a lock that does not engage means the seal never fully closes.
Hunt the drafts while it is still mild
Pick a breezy day and run a hand around the edges of each closed window, or watch a candle flame. Cold moving air means a gap. Common culprits, roughly in order: flattened or torn weatherstripping, a sash sitting out of square on worn hinges, and shrunken exterior caulking. Weatherstripping and caulk are honest DIY jobs; a racked sash is a hardware fix, because new foam on a crooked window seals nothing.
Look at the glass itself
Fog, haze, or moisture between the panes means the sealed unit has failed and the window has already lost its insulating value; heating season makes that loss expensive. A sealed unit replacement before winter beats one after, partly for the heat savings and partly because glass ordered in the fall arrives before the deep-freeze rush. Cracks and chips deserve the same urgency: freeze-thaw cycles drive cracks, and a chip that survived summer often lets go in the first cold snap. Book the glass replacement while it is still a small job.
Do not forget the quiet rooms
Basement windows, the spare room, the camp or cottage that closes for the season: windows nobody operates are where problems sit unnoticed. A latch that never quite caught in September is an open invitation to weather and pests by March. Give the low-traffic windows the same open-close-lock test as the rest of the house.
When to call it in
Anything involving hardware, glass, or a sash out of square is worth a professional visit, and fall is the right season to book it. If the list is longer than a window or two, a full window service covers the whole house in one trip: every window operated, small fixes done on the spot, and one written quote for anything needing parts. The goal is simple: everything moving freely and sealing tight before the first real cold, with the estimate free either way.