HVAC Repair in Sanford, ME
Homes here need heat from September through May and cooling from July through August. If your system quits, tell us what it's doing and a licensed contractor who covers York County will get in touch.
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Nine months of heat, and nights that test every part
Your furnace in Sanford works from September through May. On winter nights averaging 16°F, it runs long and often, and the igniter and blower motor take the wear. Most homes here heat with fuel oil, and an oil furnace that won't fire on a cold night leaves the house cold fast.
Summer is short, just July and August, with afternoons around 79°F. Your air conditioner or heat pump does not run hard for long, but it still needs to start up reliably when those weeks arrive. York County has seen 95 winter storms and 93 damaging wind events over the past ten years, and outages follow. More than half of Maine households lost power for at least a day in 2024. When the power drops and comes back, most systems restart on their own, but a furnace that was already struggling may not.
- 9 months
- September through May, your system heats
- 2 months
- July through August, it cools
- 16°F
- the average winter night it heats against
- 79°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Why is my heat not working?
- Start with the thermostat and the power to the furnace before you assume the worst. Check that it is set to heat and a few degrees above room temperature, and check the breaker and any switch that looks like a light switch near the unit, since that shuts the furnace off for service. If those are fine, listen for what happens when you turn the heat up. A furnace that hums but never lights often has a dirty flame sensor or a bad igniter, and one that does not respond at all may have tripped a safety switch. With 60.5% of homes here heating with fuel oil, a common cause is simply running out of oil or a clogged nozzle, so check the tank level if that is your setup. A furnace that runs 9 months of the year here works hard, and a contractor can tell you quickly which part failed.
- Why is my system running but not cooling the house?
- If the blower is running but the air is not cold, check the air filter first. A filter clogged enough can starve the system of airflow and let the coil ice over, and once that happens the system blows air that feels barely cool at all. Check the outdoor unit too, since leaves, grass clippings or ice on the coil block the heat exchange it needs to work. If the filter is clean and the outdoor unit is clear, the system may be low on refrigerant from a leak, and that is not something to add on your own. Cooling season here is short, just July and August, so a system that is not pulling its weight during an 79°F afternoon is worth getting looked at before the season is over.
- What can I check before calling for HVAC repair?
- Check the thermostat settings, the batteries in it if it uses them, and the breaker for the system before anything else. Look at the air filter and replace it if it is visibly dirty, since a clogged filter causes problems that look like bigger failures. Walk outside and check that the outdoor unit is not blocked by leaves, snow or ice, and that nothing is covering the vent hood if you heat with fuel oil. Power outages are common here, with 54% of Maine households losing power for at least 24 hours in 2024, so if the system was working before an outage, confirm it simply needs to be turned back on or reset rather than repaired. If none of that explains it, a contractor can diagnose what is actually wrong.