HVAC Repair in Lindenhurst, NY
Homes here need heat from October through May and cooling from June through August. If your system quits, tell us what it's doing and a licensed contractor who covers Suffolk County will get in touch.
Tell us about the job
It takes about a minute.
Eleven months of work, most of it in the cold
Lindenhurst only gets a break from heating and cooling for one month a year. The furnace runs from October through May, and on winter nights that average 26°F it cycles on and off for hours at a stretch. Every one of those starts wears on the burner and igniter. 44% of homes here heat with fuel oil, and when the igniter finally gives out, the burner will not light and the house goes cold.
Summer asks less of the system but not nothing, with afternoons averaging 80°F from June through August. The bigger threat is what comes with the weather here. Suffolk County has logged 82 winter storms and 434 damaging wind events over the past ten years, and 11% of New York households lost power for a full day or more in 2024. A furnace or air conditioner that comes back on wrong after an outage, or takes a hit from a falling branch on the outdoor unit, needs a look before you trust it again.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 26°F
- the average winter night it heats against
- 80°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Why is my heat not working?
- Start with the thermostat. Make sure it is set to heat and the temperature is set above the room temperature, since a setting bumped by accident is more common than people expect. If the thermostat looks right, check your breaker panel for a tripped switch, since furnaces and boilers both run on electricity even when the heat itself comes from gas or oil. Fuel oil systems here need oil in the tank, so if you are one of the many homes on oil, check the gauge. If none of that explains it, the igniter, the pilot light, or a safety switch may be shutting the system down, and that needs a contractor to look at it.
- Why is my system running but not cooling the house?
- The most common cause is a dirty air filter choking off airflow, so check that first and replace it if it looks gray or clogged. A frozen coil will do the same thing, and if the air coming from your vents feels weak or barely cool, ice on the indoor coil is a likely reason. Turn the system to fan only for an hour to let any ice melt before you try cooling again. If the air still is not cold after that, the system is likely low on refrigerant or has a failing part, and that repair needs a licensed contractor.
- What can I check before calling for HVAC repair?
- Check the thermostat settings first, since the wrong mode or a battery running low causes more no-heat and no-cool calls than any actual mechanical failure. Check your breaker panel next, since a tripped breaker will stop a furnace, air handler, or condenser cold. Look at the air filter and replace it if it is dirty, because restricted airflow causes problems that look like bigger failures. If your system uses fuel oil, check the tank level. Winter storms and wind here knock out power often enough that it is worth checking whether the outage was the actual cause, since most systems, including standing pilot water heaters, come back on by themselves once power is restored.