HVAC Repair in Barnstable Town, MA
Homes here need heat from October through May and cooling from July through August. If your system quits, tell us what it's doing and a licensed contractor who covers Barnstable County will get in touch.
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Ten months of work on your system, out on Cape Cod
Barnstable Town homes need heat from October through May and cooling in July and August. That is ten months a year your system is running, with barely a break between the last cold night and the first hot afternoon.
Winter nights here average 26°F, cold enough that a gas furnace, which is how most homes here heat, cycles on and off through the night to hold the temperature. Each cycle puts wear on the igniter and the flame sensor, and a worn one leaves you with a furnace that will not light. On the storm side, the county has logged 14 winter storms and 249 damaging wind events over the past ten years, and statewide, one in ten households lost power for a day or more in 2024. A furnace or air conditioner cannot run without power, no matter what shape it is in.
- 8 months
- October through May, your system heats
- 2 months
- July through August, it cools
- 26°F
- the average winter night it heats against
- 77°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
A new furnace and air conditioner would cut about $200 a year off heating and cooling for a typical Barnstable County home.
Estimates for a typical Barnstable County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Massachusetts fuel prices and NOAA climate normals. Your home will differ.
Repair makes sense when one part has failed.
Replacement makes sense when the furnace's heat exchanger is cracked, the air conditioner's compressor has failed, or repairs keep coming.
- Why is my heat not working?
- Most often it is the thermostat, the igniter, or the power to the unit. Check that the thermostat is set to heat and the temperature is above room temperature, and check your breaker panel for a tripped switch. If the furnace has a standing pilot, look for a small blue flame near the burner. Gas furnaces with an electronic igniter will not light without power, so a breaker trip on a night near 26°F can leave a house cold fast. If the thermostat and breaker both check out, the igniter or a flame sensor may need a contractor's attention.
- Why is my system running but not cooling the house?
- The blower is moving air, but something is stopping that air from carrying heat out of the house. Start with the filter. A clogged filter chokes airflow across the coil and the system runs without cooling much. Check that outdoor vents and indoor registers are not blocked by furniture or debris, since Barnstable Town summers can push afternoons to 77°F and a struggling system falls behind fast. If the filter is clean and the vents are open, the refrigerant charge or the coil itself likely needs a contractor to look at it.
- What can I check before calling for HVAC repair?
- Check the thermostat first. Confirm it is set to heat or cool as needed, the batteries are good, and the temperature setting actually calls for the system to run. Next check the breaker panel and any furnace switch, since a tripped breaker or a flipped switch near the unit looks like a dead system but takes seconds to fix. Look at the air filter and swap it if it is gray or clogged, since restricted airflow causes both weak heat and weak cooling. If the system still will not run right after these checks, a contractor will need to look at the parts inside the unit.


