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Sizing a furnace for this house means accounting for what the burner and heat exchanger are actually asked to do each year. Homes in Crittenden County, AR run heat about five months a year, from November through March. A unit that is undersized runs longer cycles to hold temperature, and the ignition system, the heat exchanger, and the blower motor all carry that added load across every month of the season. A contractor quoting a replacement here has to run a proper load calculation against the house envelope, not pull a number from the old unit's nameplate, because an install that looks adequate on a mild day will show its shortfall by February.
Existing ductwork is what determines whether a furnace installation goes cleanly or requires additional work before the equipment is ever set. Half the homes in Crittenden County, Arkansas were built in 1983 or earlier (2020-2024 ACS 5-year). That means a large share of houses here were ducted for systems that predate what contractors install today, and the duct layout, trunk sizing, and return placement reflect load assumptions that a modern furnace may not share. A contractor sizing a new unit has to assess what the existing duct system will actually carry, not assume it fits.
What a Furnace Installation Covers
The furnace itself sits inside the house, most often in a basement, utility closet, or mechanical room. It is the cabinet that generates heat and pushes conditioned air into the rest of the home. The air handler, when present as a separate unit, lives in the same indoor space and moves air across the heat source.
The thermostat mounts on an interior wall where it reads the air temperature and tells the furnace when to run. A flue or vent pipe runs from the furnace to an exterior wall or through the roof, carrying combustion gases out of the house. The condensate line, on high-efficiency models, drains water produced during the heating process to a floor drain or pump.
The drawing beside this text shows a typical layout, and a licensed contractor determines exactly which components and configurations apply to your home.
Find a contractor in Crittenden CountyCrittenden County, by the numbers
52 severe weather events were recorded in Crittenden County, Arkansas 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 Crittenden County, Arkansas were built in 1983 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCrittenden County, Arkansas holds 21,388 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 57.4% of the occupied homes in Crittenden County, Arkansas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Installation Rules for Crittenden County, Arkansas6 sourced standards and codes
What the installation actually looks like
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 Rules in Crittenden County, Arkansas
An Arkansas HVACR licence is good across the state: no city or county may require its own licence to do HVACR work, though local permits and inspections still apply.
Arkansas requires an HVACR licence or registration: it is unlawful to do HVACR work without the appropriate one unless the chapter exempts you.
Severe Weather Events in Crittenden County
Weather patterns in Crittenden County put real demands on heating equipment, from hard winters that run furnaces long and often to seasonal swings that shorten the window for installation and service. How much stress local weather places on a furnace is a local question, and it shapes what size and grade of equipment a contractor will put in a home here.
52 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.