HVAC Repair in Greenville, MS
Homes here need heat from November through March and cooling from May through September. If your system quits, tell us what it's doing and a licensed contractor who covers Washington County will get in touch.
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Ten months of work a year on your system in Greenville
Your system in Greenville barely gets a break. Heat from November through March, cooling from May through September, that's ten months of the year it has to run. Summer afternoons average 91°F, so the compressor carries a heavy load for five straight months. Winter nights average 37°F, cold enough that a gas furnace, which is how most homes here heat, cycles on and off through the night.
All that running time wears on the parts that start and stop the system, like the igniter and the capacitor. Storms add to it. Washington County has had 84 damaging wind events and 6 winter storms over the past ten years, and in Mississippi, close to a third of households went at least 24 hours without power in 2024. A power cut during a cold snap or a heat wave means the system has to come back on and catch up, right when the house needs it most.
- 5 months
- November through March, your system heats
- 5 months
- May through September, it cools
- 37°F
- the average winter night it heats against
- 91°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
A new furnace and air conditioner would cut about $160 a year off heating and cooling for a typical Washington County home.
Estimates for a typical Washington County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Mississippi 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.
Mississippi requires HVAC contractors to hold a state license.
Mississippi licenses HVAC contractors through the State Board of Contractors. That license belongs to the contractor, not to any single job, so the same license that covers an installation also covers a repair.
For a repair on your heating and cooling system, that license is what stands behind the person doing the work. Gas connections and refrigerant lines are the parts of the job where a mistake matters most, and in Mississippi the contractor doing that work is the one the state licensed.
Source: Mississippi State Board of Contractors
- 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 a degree or two can look like a dead system. Check your breaker panel next, because a tripped breaker will shut a furnace down with no other warning. If the thermostat runs on batteries, swap them. If the system still will not fire and it is a gas furnace, look at the vent hood outside. A blocked vent from wind debris or ice will stop the furnace from running, and that matters here since winter nights average 37°F and a furnace down on a cold night needs attention fast.
- Why is my system running but not cooling the house?
- Check the air filter first. A filter clogged with dust blocks airflow across the coil, and when that happens the coil can ice over and blow warm air even though the system is running. Check that the thermostat is set to cool, not fan only, since fan only mode moves air without cooling it. Look at the outdoor unit too. If the fan outside is not spinning, or if leaves or grass clippings are packed against it, the unit cannot move heat out of the house. With summer afternoons here reaching 91°F, a system stuck like this needs a look before the heat builds up inside.
- What can I check before calling for HVAC repair?
- Check the thermostat settings, the batteries in it, and the breaker for the system before anything else. Those cause more no-heat and no-cool calls than a failed part does. Check the air filter and replace it if it is visibly dirty, since a blocked filter can be mistaken for a bigger problem. Look outside at the condenser or the vent hood for anything blocking it, branches, leaves, or ice. If all of that checks out and the system still is not working right, a licensed contractor can diagnose what is actually wrong and price the repair for your system.