HVAC Repair in Seaford, DE
Homes here need heat from October through April and cooling from June through September. If your system quits, tell us what it's doing and a licensed contractor who covers Sussex County will get in touch.
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Eleven months of work, most years
Your heating and cooling system in Seaford only gets a short break. Heat runs October through April, seven months, and the AC picks up June through September. That is eleven months out of twelve with almost no rest in between.
Winter nights averaging 29°F mean the furnace or heat pump cycles on and off for hours at a stretch, and summer afternoons near 85°F keep the AC working just as hard the other half of the year. More than half the homes here heat with electricity, so a heat pump or electric furnace carries that full load itself. On top of that, Delaware sees real storms, 17 winter storms and 198 damaging wind events over the last ten years, and 12% of households in the state lost power for at least a day in 2024 alone. A system that already runs long hours does not handle a hard shutdown and restart the same way a rested one does.
- 7 months
- October through April, your system heats
- 4 months
- June through September, it cools
- 29°F
- the average winter night it heats against
- 85°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Delaware requires HVAC contractors to hold a state license.
That state license comes from the Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners. To hold it, a contractor has been tested and is on record with the state. The license belongs to the contractor, not to the job, so nothing separate gets issued for your repair.
For work on a heating and cooling system, that license is what stands behind the person in your house. Delaware is the one that tested this contractor and keeps the record of it, which is what you are relying on when you let them open up the system and work on it.
Sources: Delaware Code Online · Delaware Division of Professional Regulation
- Why is my heat not working?
- Most often it's the thermostat, a tripped breaker, or the igniter. Check that the thermostat is set to heat and a few degrees above room temperature, and check your breaker panel for a tripped switch. If those are fine, the igniter or flame sensor may have failed, and a furnace won't run without one. With winter nights here averaging 29°F, it's worth getting this looked at quickly rather than waiting.
- Why is my system running but not cooling the house?
- The blower is moving air but something is stopping that air from getting cold. Check the filter first. A clogged filter restricts airflow across the coil, and a dirty coil can ice over and stop cooling altogether. If the filter is clean and the vents are blowing warm air anyway, the system may be low on refrigerant, and that needs a licensed contractor to test and recharge.
- What can I check before calling for HVAC repair?
- Start with the thermostat. Make sure it's set correctly and the batteries are good, since a dead thermostat looks exactly like a dead system. Check your breaker panel for anything tripped, and check the filter, since a filter clogged enough can shut a system down on its own. For a furnace, check that the gas valve is open. If all of that looks right and the system still isn't working, call a licensed contractor, since Delaware requires HVAC contractors to hold a state license and diagnosing anything beyond this takes the right tools.