Warren County, Ohio, read at county level: 12 ZIP codes and 3 communities inside the Cincinnati metro's coverage, with the climate record and service pressures set out below. TempReach USA connects you with an independent local HVAC technician serving the county.
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Warren County in one paragraph: 401 square miles in Ohio, 12 ZIP codes, a heating climate pressure read from the normals at CINCINNATI NORTHERN KY AP, KY US, and housing that answers 4,892 heating degree days against 1,160 cooling degree days a year. TempReach USA is a referral service, not an HVAC company — one call connects you with an independent local HVAC technician serving this county.
Every climate number on this page comes from one record: the NOAA 1991-2020 normals at CINCINNATI NORTHERN KY AP, KY US, the primary metro's station, read here for Warren County. The record's shape is 4,892 heating degree days set against 1,160 cooling degree days, 45.26 inches of precipitation in an average year, 22.1 days reaching 90 degrees or above and 99.8 nights at or below freezing, with an average temperature of 54.7 degrees across the year.
The neighbours tell part of Warren County's heating story: Hamilton County, Kenton County, Ohio County are among the counties around it, all reading the same record at CINCINNATI NORTHERN KY AP, KY US, all filling their diaries in the same cold weeks. What separates this county's share is its own ground — 401 square miles lying northeast of the Cincinnati metro's centre, roughly 34 miles from the metro's centre — and its own housing, fitted across the decades its communities were built. The season is regional; the failures are local, one system at a time, at addresses only this county has.
Set the county inside its metro and the picture completes. Warren County answers to the Cincinnati metro's data — its housing profile, its problem ranking, its climate station — but the county is where that data touches ground: 3 communities, 12 ZIP codes, one county's worth of systems ageing under the record kept at CINCINNATI NORTHERN KY AP, KY US. This page is that ground-level reading, kept separate from the metro page so the local detail is never averaged away.
The ZIP list is the county's working map. Warren County carries 12 codes, running from 45005 through 45054 in the middle of the list to 45162 at its end, and every code on it is a small housing census of its own — the building decades, the system generations, the duct materials of its streets. Heating and cooling work routed by those codes meets the county in slices, and the slices differ more than the county's shared climate record would suggest.
Position first: Warren County lies northeast of the Cincinnati metro's centre, roughly 34 miles from the metro's centre as the map measures it, with Hamilton County, Kenton County, Ohio County among the counties around it. Neighbourhood at county scale matters to heating and cooling because systems do not respect the border — the same subdivisions' building decades continue across it, the same cold snaps and heat waves examine both sides in the same night — while each county's page, this one included, keeps the local figures distinct.
Two numbers organise Warren County's heating and cooling year: 4,892 and 1,160, the heating and cooling degree days in the normals at CINCINNATI NORTHERN KY AP, KY US. Whichever runs larger decides the county's dominant pressure — here, a heating one — and with it the season a household should prepare for first. The supporting figures fill in the texture: 54.7 degrees as the year's average temperature, 22.1 hot days, 99.8 freezing nights, 45.26 inches of precipitation. Every paragraph on this page is, in the end, a reading of those six numbers on this county's ground.
Start the county at its named places: Mason, Lebanon, Springboro head a list of 3 communities recorded in Warren County. The list matters to heating and cooling because communities concentrate the housing — a street of homes built in one decade produces one kind of service diary, the next community's different decade produces another — and because the roads between the named places are part of the working day here. The county page's climate record is shared; the ground it lands on is divided among these names.
Ownership writes part of the diary too. Across the Cincinnati metro, 68.1% of households own their homes, and owner-occupiers and landlords keep different maintenance calendars — owners tending to plan replacements in the shoulder seasons, rented homes more often meeting their systems at the point of failure. Warren County shares that metro pattern across its 12 ZIP codes and its listed communities, and it shows in the timing of the calls as much as in their content: planned work where the owners live, urgent work where they do not.
A reader who only had Warren County's identifying figures would already know its shape: a county of 401 square miles in Ohio, 12 ZIP codes, 3 communities on the record, sitting northeast of the Cincinnati metro's centre. What the figures cannot say alone is how the ground feels to work — the drives between calls, the mix of decades in the housing, the season that runs taller — and that is what the rest of this page is for, section by section.
City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.
Population 35,148
Population 21,216
Population 19,577
TempReach USA is not an HVAC company. We employ no heating or cooling technicians, we run no service trucks, and we do not carry out HVAC work of any kind. This website and its call center exist for one purpose: to connect homeowners with independent local heating and cooling professionals who serve their area. When you call the number on this site, your call is routed to such a professional. From that point, everything about the job belongs to that professional and to you: the assessment, the work itself, the scheduling, what you are charged, and the terms of any agreement you reach. The professional who takes your job is solely responsible for it. The technician who arrives at your home runs their own business; they are not an employee, agent or subcontractor of TempReach USA. Our part is the information on these pages — assembled from Census Bureau housing data and NOAA climate records for each metro — and the routing of your call. We state this plainly on purpose: you should know exactly who you are hiring before anyone picks up a wrench or a gauge.
One call connects you with an independent local heating and cooling professional serving Warren County and the Cincinnati metro.
Call center hours: Mon-Fri 7:00 AM-10:00 PM ET | Sat 8:00 AM-10:00 PM ET | Sun 7:00 AM-9:00 PM ET