· by Michael Blair, Nashville's Cleaning Service
Somewhere in October the first properly cold night arrives, the thermostat gets flipped to heat, and the house fills with a faint burning smell. That is dust that settled on the heat exchanger or the electric elements over the summer, burning off, and it passes within a run or two. What does not pass is the dust the system pushes around once it runs all day. A house that was clean in September can look filmy by November, and a little work before the switch saves a lot after it.
Registers and returns
Floor registers collect everything: crumbs, pet hair, a stray Lego, grit tracked in from the yard. Lift them out, vacuum down into the opening as far as the hose reaches, and wash the grilles in the sink with dish soap. Wall and ceiling registers need a brush attachment and a damp cloth run along the louvers. This is surface cleaning, not duct cleaning, and it does not need to be more than that.
Return grilles, the large ones that pull air back to the system, tell you the most. Gray fuzz on a return means the filter behind it is working and the room air is carrying a lot of dust. Vacuum the grille, wipe it, and change the filter if it is due. A clogged filter at the start of heating season makes the whole house dustier, because air finds its way around it instead of through it.
Ceiling fans and high surfaces
Plenty of people reverse their ceiling fans for winter, running them clockwise on low to push warm air down from the ceiling. Clean the blades first. The top of each blade carries a summer’s worth of dust, and switching the direction and turning the fan on throws it across the bed and the floor. An old pillowcase slipped over each blade and pulled back keeps it contained.
Warm air rises and carries fine dust with it. It lands on the tops of kitchen cabinets, door frames, crown molding, the upper slats of blinds and the top of the refrigerator. Work top to bottom so the floors come last, and use a damp microfiber cloth rather than a feather duster, which mostly relocates dust to a lower shelf.
Dry air, static and screens
Heated air is dry, and a Middle Tennessee house goes from muggy to parched within days of the furnace running steadily. Dry air builds static, and static pulls dust onto television screens, monitors, plastic trim and appliance fronts. Wipe screens with a dry microfiber cloth, or one barely dampened with plain water, and never spray glass cleaner straight onto a panel. A little anti-static spray on a cloth helps plastics hold off dust a while longer.
Humidifiers bring their own mess. An ultrasonic unit filled from the tap throws the minerals in that water into the air, and they settle as a fine white powder on nearby furniture; Nashville water carries enough mineral to make it obvious. Distilled water or a demineralization cartridge stops the white dust. Empty and scrub the tank weekly, because standing water in a warm room grows a slick film quickly.
An order that keeps it done
Clean before the first cold snap if the forecast gives you the chance, then do a quick second pass two or three weeks into heating season, once the system has moved whatever was sitting in the ducts. After that, heating-season dust is about frequency rather than effort. Households that manage fine with monthly cleaning in summer often find December and January need more.
Space heaters and baseboard heaters get the same treatment as the furnace. Switch them off, unplug them or turn them off at the breaker, let them cool, and vacuum along the fins and the intake before the first use. A space heater burning off a year of dust smells worse than any furnace, and one with pet hair packed into its intake runs hotter than it was built to.
- Filter checked or changed before the first heating run
- Floor registers lifted, vacuumed and washed; returns wiped
- Fan blades cleaned before the direction is switched
- High surfaces first, floors last
- Space heater and baseboard fins vacuumed while off and cool