Heating and cooling help across Onondaga County, New York — 10 communities and 45 ZIP codes, inside the Syracuse metro's coverage. TempReach USA connects you with an independent local HVAC technician; this page is the county-level homework.
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Onondaga County covers 778 square miles in New York. Its climate is read from the normals recorded at SYRACUSE HANCOCK INTL AP, NY US — 6,588 heating degree days against 619 cooling degree days — and its dominant pressure is a heating one. TempReach USA is a referral service, not an HVAC company: one call connects you with an independent local HVAC technician serving the county.
Read Onondaga County's weather the way this page reads it: through the thirty-year normals kept at SYRACUSE HANCOCK INTL AP, NY US for the Syracuse metro. Those normals give the county 619 cooling degree days and 6,588 heating degree days a year, 39.88 inches of precipitation, 10.2 days at 90 degrees or above, 132.5 nights at or below freezing, and an average temperature of 48.5 degrees — the fixed background every system in the county works against.
Onondaga County is heating country by the numbers: 6,588 heating degree days a year, 132.5 freezing nights, and homes spread over 778 square miles all asking their systems the same question on the same January night. The cooling half of the equipment matters — 619 cooling degree days is not nothing — but it is the heating load that decides which systems fail, and when. Local technicians read the county that way: autumn tune-ups, honest conversations about ageing furnaces and heat exchangers, and vans stocked for the cold weeks.
The county's ground shapes the work in one more way: 778 square miles is a lot of roofs for a service map to hold, and Onondaga County's homes divide between its listed communities — Syracuse, De Witt, Fairmount, Baldwinsville, Radisson, North Syracuse — and the roads between them. A technician routed here is working a county, not a street: the drive between calls is part of the diary, and the systems at each end of it were fitted in the decades those communities were built.
A ZIP code in Onondaga County is a small climate-and-housing district of its own. The county's 45 codes — 13020, 13027, 13029, 13031 among them — all read the same normals from SYRACUSE HANCOCK INTL AP, NY US, yet the systems inside them were installed in different decades, serve different house sizes, and fail in different orders. That is why this page prints the whole list rather than a summary: the codes are the finest division of the county the data supports, and they are the division the work itself follows.
There are 2 counties on Onondaga County's neighbour list, Madison County, Oswego 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 Onondaga County: a cooling season measured at 619 degree days, a heating season at 6,588, 10.2 days of serious heat and 132.5 freezing nights, and 39.88 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 778 square miles of housing.
There is a practical reason this page names Onondaga County's communities one by one. A heating or cooling system belongs to a house, a house belongs to a community, and the community's building decade is the strongest single clue to what the system will need — the 10 places recorded here, from Syracuse through Baldwinsville and beyond, each carry that clue in their streets. The metro data on the Syracuse page describes the whole region; this list is where the description becomes local.
Spread the metro's eras over Onondaga County's own ground and the housing paragraph becomes a map: 778 square miles, 45 ZIP codes at 17.3 square miles per code, and a stock whose largest band was built before 1960 (45.1%), whose pre-1980 share runs to 69.0% and whose post-2000 share runs to 11.5%. 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.
One way to hold Onondaga County in mind is as the local layer of a wider dataset. Above it sits the Syracuse metro, with its Census housing profile and its NOAA station at SYRACUSE HANCOCK INTL AP, NY US. At this level sit the county's own numbers — 778 square miles, 2 neighbouring counties, 45 ZIP codes, 10 listed places — and below it, not published anywhere, sit the individual homes whose systems all of it describes. This page works at the middle level, where the data is still local enough to act on.
City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.
Population 146,211
Population 10,815
Population 9,998
Population 7,732
Population 6,901
Population 6,727
Population 6,590
Population 5,978
Population 5,293
Population 4,657
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 Onondaga County and the Syracuse 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