Montgomery County heating and cooling, county by county: 461 square miles of Ohio lying west of the Dayton metro's centre, 32 ZIP codes, and a climate record read from DAYTON INTL AP, OH US. TempReach USA connects you with an independent local HVAC technician; this page sets out the county's own figures.
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Montgomery County in one paragraph: 461 square miles in Ohio, 32 ZIP codes, a heating climate pressure read from the normals at DAYTON INTL AP, OH US, and housing that answers 5,149 heating degree days against 1,154 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.
Read Montgomery County's weather the way this page reads it: through the thirty-year normals kept at DAYTON INTL AP, OH US for the Dayton metro. Those normals give the county 1,154 cooling degree days and 5,149 heating degree days a year, 41.33 inches of precipitation, 15.5 days at 90 degrees or above, 109.9 nights at or below freezing, and an average temperature of 53.9 degrees — the fixed background every system in the county works against.
Read the climate record and the county's pressure names itself. Heating degree days outnumber cooling degree days at DAYTON INTL AP, OH US, and the lived version of that statistic is a housing stock whose furnaces and heat pumps run the long season while its cooling takes the short one. Across Montgomery County's 461 square miles — from Dayton to the county's edge communities — the pattern repeats: systems sized for the cold, maintained for the cold, and replaced, when their time comes, with the cold in mind first.
Distance is the county fact the climate table leaves out. Montgomery County's centroid lies west of the Dayton metro's centre, roughly 10 miles from the centre it is measured against, and that distance is travelled on every call routed here — out through the metro's nearer counties and into this one's 32 ZIP codes. Local knowledge in a county like this is partly a map held in the head: which roads, which communities, which end of the county a call is coming from.
The ZIP list is the county's working map. Montgomery County carries 32 codes, running from 45309 through 45414 in the middle of the list to 45469 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.
There are 2 counties on Montgomery County's neighbour list, Greene County, Miami County among them, and the list is a reminder that a county page is a slice of a continuous map. The slice is worth keeping separate: this county's land area, its ZIP codes and its communities are its own, and its heating and cooling pressure — the heating profile described above — lands on its own housing. But the slice only makes full sense beside its neighbours, whose pages are linked from this one for exactly that reason.
Consider what one year asks of a system in Montgomery County: a cooling season measured at 1,154 degree days, a heating season at 5,149, 15.5 days of serious heat and 109.9 freezing nights, and 41.33 inches of precipitation working on every outdoor unit through all of it. No single figure is remarkable; the combination is the county's climate, and it is the combination a system has to survive for fifteen or twenty years. The service patterns described on this page are that arithmetic, playing out across 461 square miles of housing.
The county's place list tells its own story. Dayton (136,741 residents) is the largest of the 9 communities the record names for Montgomery County, with Kettering (57,442 residents) behind it and Huber Heights and Centerville further down the list. A technician working this county works all of those places in a single week, and the systems change character with the address: the era a community was built in decides whether the call is about an ageing furnace, a condenser at the end of its summers, or ductwork that predates the equipment it now serves.
Spread the metro's eras over Montgomery County's own ground and the housing paragraph becomes a map: 461 square miles, 32 ZIP codes at 14.4 square miles per code, and a stock whose largest band was built before 1960 (37.5%), whose pre-1980 share runs to 69.3% and whose post-2000 share runs to 12.8%. The percentages are the metro's; the streets they land on are this county's, and a technician driving from one end of the county to the other drives through the bands in sequence.
A reader who only had Montgomery County's identifying figures would already know its shape: a county of 461 square miles in Ohio, 32 ZIP codes, 9 communities on the record, sitting west of the Dayton 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 136,741
Population 57,442
Population 43,266
Population 24,815
Population 24,432
Population 23,041
Population 19,859
Population 15,100
Population 13,388
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 Montgomery County and the Dayton 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