Tell us about the job
Takes about a minute. No obligation.
A contractor troubleshooting a furnace in Clark County has to settle one question before anything else: what actually wore this component out. 124 severe weather events were recorded in Clark County, Ohio between 2015 and 2024. That puts Clark County in the moderate range for severe weather, and a furnace that fails here has usually failed because of age, a missed filter change, or an installation that was never quite right. Storm load is real, but it is not what drives most of the repair calls a contractor sees. A cracked heat exchanger or a failed inducer motor points back to years of hard cycling, not to last season's storms.
Furnaces in housing this old run on parts that manufacturers stopped cataloging years ago, and whether a contractor can source a replacement determines whether a repair is even on the table. Half the homes in Clark County, Ohio were built in 1963 or earlier (2020-2024 ACS 5-year). That depth of age in the housing stock means a contractor opening a furnace here checks the model and the part numbers before anything else, because the repair scope depends on what the supply chain still carries for that system. A job that looks straightforward from the outside can stall on a heat exchanger or a control board with no current equivalent.
The Parts of a Furnace a Contractor Checks First
The heat exchanger sits at the core of the furnace cabinet in your basement or utility space, and it is where a contractor looks when the system runs but gives no heat or when there are signs of combustion trouble. The burner assembly fires directly into it, and a failed ignitor or dirty burner shows up fast as a no-heat call.
The blower motor sits below the heat exchanger and pushes conditioned air out through the supply side of the house. The control board, mounted inside the cabinet, runs the timing between ignition, the blower, and the gas valve, and a fault there can mimic the symptoms of several other failed parts.
The drawing shows a general layout of a furnace system, and a licensed contractor determines which components apply and what condition they are in for your specific home.
Find a contractor in Clark CountyClark County, Ohio, by the numbers
124 severe weather events were recorded in Clark County, Ohio between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in Clark County, Ohio were built in 1963 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesClark County, Ohio holds 61,126 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 69.4% of the occupied homes in Clark County, Ohio (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Repair Rules & Standards for Clark County, Ohio18 sourced rules and standards
What HVAC Repair Looks Like in Clark County
Non-weatherized gas furnaces manufactured on or after November 19, 2015 must reach 80.0 percent AFUE.
Non-weatherized oil-fired furnaces manufactured on or after November 19, 2015 must reach 83.0 percent AFUE.
Mobile home gas furnaces manufactured on or after November 19, 2015 must reach 80.0 percent AFUE.
Non-weatherized gas furnaces manufactured on or after December 18, 2028 must reach 95.0 percent AFUE, up from the 80.0 percent minimum that applies to units manufactured before that date.
Licensing and Legal Requirements in Clark County, Ohio
An Ohio home construction services contract must include a copy of the supplier's certificate of insurance showing general liability coverage of not less than two hundred fifty thousand dollars.
In Ohio a home construction service means the construction of a residential building, including the repair, improvement, remodel or renovation of an existing structure, and does not include construction on a structure containing four or more dwelling units except for work on an individual dwelling unit within it.
A home construction service supplier in Ohio is defined as a person who contracts with an owner to provide home construction services for compensation and who maintains a general liability insurance policy of not less than two hundred fifty thousand dollars.
The Ohio construction industry licensing board issues state licenses to individuals as heating, ventilating and air conditioning contractors, refrigeration contractors, electrical contractors, plumbing contractors and hydronics contractors.
An Ohio board of county commissioners may accept a valid and unexpired Chapter 4740 license held by a heating, ventilating and air conditioning contractor toward its own licensing requirements for work on one-, two-, or three-family dwelling houses.
An Ohio board of county commissioners may adopt rules licensing heating, ventilating and air conditioning contractors who are not required to hold a state license under Chapter 4740.
In Ohio municipal law a specialty contractor includes heating, ventilating and air conditioning contractors, refrigeration contractors, electrical contractors, plumbing contractors and hydronics contractors.
An Ohio board of county commissioners may not register a specialty contractor who is required to hold a license under Chapter 4740 but does not hold a valid one.
An Ohio municipal corporation may not register a specialty contractor who is required to hold a license under Chapter 4740 but does not hold a valid one.
In Ohio building law a residential building means a one-family, two-family or three-family dwelling house and any accessory structure incidental to it, and does not include an industrialized unit, a manufactured home or a mobile home.
Ohio's contractor licensing chapter reaches only work on a construction project, and a construction project is defined to exclude residential buildings, so an HVAC contractor working on a one-, two-, or three-family dwelling in Ohio falls outside the state licensing requirement.
Violating Ohio's contractor licensing prohibition is a minor misdemeanor on a first violation and a misdemeanor of the fourth degree on subsequent violations.
Under Ohio law no person may act as or claim to be a type of contractor that Chapter 4740 licenses unless that person holds a license issued under that chapter.
In Ohio a home construction service supplier may not perform a home construction service costing twenty-five thousand dollars or more without entering into a written home construction services contract with the owner, unless the supplier and owner enter into a cost-plus contract.
Severe Weather Events in Clark County
Heating and cooling equipment in Clark County works against whatever the weather brings, and that workload adds up over time. Stress from extreme conditions is one of the main reasons furnaces need repair, which makes local weather history relevant to anyone keeping a system running here.
124 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.