Philadelphia winters can swing from mild to freezing in a single week, and the first real cold snap is when weak heating systems break down. The good news: a little HVAC winter prep in the fall can prevent most no-heat emergencies and help your system run more efficiently.
Here’s a simple checklist for furnaces, boilers and heat pumps.
1. Replace the air filter
A clogged filter makes your system work harder, raises energy use and can cause the furnace to overheat and shut off. Check the filter now and set a reminder to check it monthly through the winter.
- Note the size printed on the old filter before buying a new one.
- Make sure the airflow arrow points toward the furnace.
2. Test the thermostat
Switch the thermostat to heat and raise the temperature a few degrees. You should hear the system start and feel warm air within a few minutes.
- Replace thermostat batteries if it uses them.
- If you have an older manual thermostat, a programmable or smart thermostat can lower heating costs by turning the heat down while you sleep or are away.
3. Clear vents, registers and returns
Walk through the house and make sure supply registers and return grilles aren’t blocked by furniture, rugs or curtains. Vacuum dust from the grilles. Closing too many vents can actually make your system less efficient.
4. Check the area around the furnace or boiler
- Keep at least a few feet of clear space around the unit.
- Don’t store paint, gasoline, cleaning chemicals or cardboard next to it.
- Make sure the area is dry. Water around the unit can mean a condensate or boiler leak.
5. Test smoke and carbon monoxide alarms
Any fuel-burning appliance, like a gas furnace, boiler or water heater, can produce carbon monoxide (CO) if something goes wrong. Press the test button on every smoke and CO alarm, replace batteries, and replace alarms that are past their expiration date. Make sure there’s a CO alarm near sleeping areas.
6. Clear outdoor units and vents
- Heat pumps: clear leaves and debris from around the outdoor unit and keep shrubs trimmed back. In winter, keep snow and ice from piling up around it.
- High-efficiency furnaces often vent through PVC pipes in an outside wall. Make sure leaves, snow and nests aren’t blocking them.
7. Seal drafts
Heating works better when warm air stays in. Look for drafts around windows and doors, and add weatherstripping or caulk where needed. Drafty or damaged windows may be worth repairing or replacing, which our window services can help with.
8. Book a professional tune-up
A yearly tune-up is the best way to catch problems early. A technician typically:
- Inspects burners, the heat exchanger and the flame
- Checks safety controls and the ignition system
- Tests airflow, the blower motor and electrical connections
- Checks venting for blockages or leaks
Booking early in the fall means you won’t be stuck waiting during the first cold wave.
Warning signs to watch for this winter
Call a pro if you notice:
- No heat, or the system turns on and off constantly
- Some rooms are much colder than others
- Banging, squealing or rattling noises
- A burning smell that doesn’t go away after the first run of the season
- A yellow or flickering burner flame instead of a steady blue one
- Energy bills climbing without a clear reason
If you smell gas, leave the house immediately and call your gas utility’s emergency line or 911 from outside.
Keep your home warm all winter
Our team provides HVAC services, from tune-ups and repairs to installations, along with year-round home maintenance across Philadelphia, Camden and South Jersey. Request a free quote to schedule your heating check before the cold sets in.
