Every year it's the same night: the first real freeze rolls in, half the county turns thermostats to HEAT for the first time since March, and the phones light up with systems that won't start. Most of those calls were preventable in October, on a mild Saturday, in about twenty minutes. Here's the split between what's yours and what's ours.
Your half — the 20 minutes:
Test-fire it NOW. Flip the thermostat to HEAT and let it run a full cycle on a day when you don't need it. A faint dusty smell for the first minutes is normal (summer's dust burning off the exchanger). What's not normal: it won't light, it booms on ignition, it squeals, or it starts and quits over and over. Any of those found in October gets fixed on schedule; found at 28°F, it joins the busiest line of the year.
Fresh filter. Heating season airflow matters as much as summer's, and the furnace pulls through the same filter.
Clear the space. Furnace closets collect boxes and coats all summer. The unit needs its combustion air and its clearance back. Same for the supply vents and returns around the house — a room's "weak heat" is often a rug or a couch.
Carbon monoxide alarms. Fresh batteries, test button, and one alarm near the bedrooms at minimum. Fuel-burning heat plus sealed-up winter houses makes this the season CO matters most.
Our half — the part you can't see: a proper fall tune-up checks combustion, cleans the flame sensor and burners, verifies the flue is drafting, and — the piece that matters most — inspects the heat exchanger for cracks. A cracked exchanger can pass carbon monoxide into your supply air with no smell and no warning; it's the reason every heating visit we run includes a CO check, and it's not a DIY inspection.
Heat pump homes: your version is making sure the outdoor unit is clear of leaves and confirming the system switches modes cleanly — and letting the tune-up verify the defrost cycle before the first icy morning proves it.
Book fall, not January. Same tune-up, calmer calendar, and problems found early are always the cheaper version: (901) 699-7763.
