HVAC Repair in Warren, OH
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 Trumbull County will get in touch.
Tell us about the job
It takes about a minute.
Eleven months of work, most years
Your furnace in Warren runs from October through May. The air conditioner takes over for June through August, so the system barely gets a month off all year. Most homes here heat with gas, and on nights that average 21°F, the burner is cycling on and off for hours to keep the house warm. Each cycle is another ignition, and the igniter is usually the first part to wear out from that kind of use.
Summer asks less of the system, with afternoons averaging 81°F, but the storms here are hard on it in a different way. Trumbull County has seen 143 damaging wind events and 9 winter storms over the past ten years, and power loss follows those storms. In 2024, 18% of Ohio households lost power for at least 24 hours. Most furnaces and air conditioners restart on their own once power returns. If yours does not, that is worth having checked.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 21°F
- the average winter night it heats against
- 81°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
A new furnace and air conditioner would cut about $190 a year off heating and cooling for a typical Trumbull County home.
Estimates for a typical Trumbull County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Ohio 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.
In Ohio, HVAC licensing for homes is left to the counties.
Trumbull County sets its own rule for who can do HVAC work on a house, since Ohio leaves that decision to the counties instead of running a state license. Whatever a contractor holds here is a county record, not a state one, and it only means something if this county requires it. Ohio does define a home contractor as someone carrying at least $250,000 in liability insurance, but that is a definition the state uses, not a credential anyone had to earn.
For a repair to your heating and cooling system, a county license, where Trumbull County asks for one, is the closest thing to a state record on file. Short of that, the insurance a contractor is required to carry under Ohio's definition is what's actually in place, not a license. Gas repair is the part of this job where a loose connection is the dangerous part, and whatever accountability exists here comes from that county rule, not from any state license, because Ohio has none for this work.
Source: Ohio Legislative Service Commission
- Why is my heat not working?
- Start with the thermostat and the power to the furnace. If the thermostat screen is blank, check the breaker and any switch that looks like a light switch near the furnace, since that shuts it off too. If it has power but won't fire, the igniter is a common failure, and on gas furnaces the flame sensor can get coated and stop the burners from staying lit. A pilot light that's gone out on an older unit will also leave you with no heat until it's relit. With winter nights here dropping to around 21°F, a furnace that's short cycling or not firing at all needs attention quickly.
- Why is my system running but not cooling the house?
- If air is moving but it's not cold, check the air filter first. A clogged filter chokes airflow across the indoor coil, and when that happens the coil can freeze up and stop cooling altogether. Next look outside at the condenser unit and make sure nothing is blocking it and the fan is spinning. If the filter is clean and the outdoor unit looks normal, the system may be low on refrigerant from a leak, which isn't something to top off yourself. Summer afternoons here average 81°F, so a system that's running constantly without keeping up is worth having looked at rather than waited out.
- What can I check before calling for HVAC repair?
- Check the thermostat settings and its batteries first, since a dead thermostat looks like a dead system. Check the breaker panel and any disconnect switch near the furnace or outdoor unit. Look at the air filter and replace it if it's dirty, since restricted airflow causes problems on both the heating and cooling side. For gas furnaces, make sure the gas valve is open and, if there's a standing pilot, see whether it's lit. If you've checked these and the system still isn't working, a contractor can diagnose what's left.


