Sharonville heating help, extremely fast
We repair and replace gas, electric and oil furnaces, and heat pumps in Sharonville, Ohio. Any brand, any age, diagnosed and quoted before we start. Most calls get handled the same day, and someone answers the emergency line at any hour.
Furnace repair, replacement, and heat pumps from techs who've worked every kind of Cincinnati-area home — with a 24/7 line for the January no-heat call.

Every way a Sharonville home stays warm.
Will a smart thermostat actually cut my gas bill?
Some, and less than the box claims. The saving comes from setbacks you would not have bothered with, not from the thermostat being clever. The bigger reason to care is what it tells you: run times, cycle counts and how long the house takes to recover. A furnace that used to run twelve minutes and now runs twenty-five is telling you something months before it fails. One caution for older systems, a two-stage or variable-speed furnace wired to a thermostat that cannot stage it will run on high heat permanently, which is worse than the thermostat you replaced.
Why does the furnace blow cool air when it first starts?
Because the burners light before the blower does, on purpose. The furnace gives the heat exchanger thirty seconds or so to warm up before it moves air across it, so the first air out of the vents is whatever was sitting in the ducts. If the cool air lasts longer than a minute or two, or the blower runs without the burners ever lighting, that is different: it usually means the furnace tried to fire and a safety stopped it, and it will keep retrying until it locks out.
Is a 96% furnace worth the extra money over an 80%?
It depends on what the swap actually involves, not on the badge. Going from 80% to 96% means the flue changes: a condensing furnace vents in PVC out a side wall and produces condensate that needs a drain, so the job grows beyond the equipment. In a house that already has a condensing furnace, the upgrade is straightforward and the gas saving is real. In a house venting up a masonry chimney shared with a water heater, taking the furnace off that chimney can leave the water heater venting badly, and that has to be solved as part of the same job.
How do I know if the heat exchanger is cracked?
You mostly do not, which is why it gets checked rather than guessed at. A cracked heat exchanger can put combustion gas into the air you breathe while the furnace still appears to run normally. The signs worth calling about are a burner flame that flickers or turns yellow when the blower kicks on, soot around the burner compartment, and a carbon monoxide alarm that trips even once. A furnace with a confirmed crack gets shut off and red-tagged the same visit. That is not an upsell, it is the only legal answer, and any company that offers to keep running it is telling you something about how they work.
