The county-level homework for Union County, New Jersey — its 103 square miles, its 26 ZIP codes, its place inside the New York metro's coverage. TempReach USA connects homeowners here with independent local HVAC technicians; the record behind the routing is on this page.
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Union County in one paragraph: 103 square miles in New Jersey, 26 ZIP codes, a heating climate pressure read from the normals at TETERBORO AP, NJ US, and housing that answers 4,735 heating degree days against 1,255 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.
Before the narrative, the numbers themselves, because everything after them is commentary: at TETERBORO AP, NJ US, the station whose NOAA 1991-2020 normals this county is read through, an average year holds 28.9 days at 90 degrees or above, 89.0 nights at or below freezing, 46.29 inches of precipitation and degree-day totals of 4,735 heating against 1,255 cooling. Spread over 103 square miles, with the county's centroid west of the New York metro's centre and roughly 13 miles from the centre it is measured against, that record is Union County's working climate.
Union County is heating country by the numbers: 4,735 heating degree days a year, 89.0 freezing nights, and homes spread over 103 square miles all asking their systems the same question on the same January night. The cooling half of the equipment matters — 1,255 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: 103 square miles is a lot of roofs for a service map to hold, and Union County's homes divide between its listed communities — Elizabeth — 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.
Routing in Union County is written in five digits. The county's codes begin at 07016 and run to 07974, 26 in total, and between the first and the last sits the county's full spread of ground — 103 square miles from the metro-facing edge to the far side. A technician's week here is a tour of those codes, and the tour is also a tour of the county's building history, because each code's systems were largely fitted when that code's streets were built.
Neighbouring counties are the honest context for Union County's figures. Its 103 square miles sit inside a wider spread of county ground — Kings County, Middlesex County, Monmouth County are among the 21 neighbours on its record — and its position west of the New York metro's centre places it on its own side of that spread. A system near the county's edge may be closer to a neighbouring county's centre than to its own; the pages are organised by county because the data is, and the links between them carry the rest of the picture.
The county's year divides by load. At one end, 28.9 days at 90 degrees or above pull the cooling season into its long peak; at the other, 89.0 nights at or below freezing do the same for heating; between them sit the shoulder weeks when neither plant runs hard. An average temperature of 55.4 degrees at TETERBORO AP, NJ US is what those two ends average out to, and 46.29 inches of precipitation spread across the year decide how much of the cooling season is also a moisture season. Union County's households plan around that division — service ahead of the taller peak, filters and checks in the shoulders — whether they name it or not.
A short place list shapes Union County's service pattern in a specific way. With Elizabeth the named communities on its record, the county's calls divide between those places and the unincorporated ground around them — and the ground is the larger share of its 103 square miles. Technicians routed here plan for distance as much as for faults: the drive between calls crosses the county's position west of the New York metro's centre, and the systems at each end belong to different building decades even when the drive is short.
Ownership writes part of the diary too. Across the New York metro, 51.5% 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. Union County shares that metro pattern across its 26 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.
The county is worth a page of its own because its facts do not reduce to its metro's. The New York metro supplies the climate station and the housing profile, but Union County supplies everything at ground level: 103 square miles, its own communities and codes, its own neighbours — Kings County, Middlesex County, Monmouth County among the 21 on its list — and its own position, west of the New York metro's centre. The metro page and this page link to each other because neither half of that picture stands well without the other.
City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.
Population 135,887
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 Union County and the New York 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