Middlesex County heating and cooling, county by county: 818 square miles of Massachusetts lying west of the Boston metro's centre, 81 ZIP codes, and a climate record read from BEVERLY MUNI AP, MA US. TempReach USA connects you with an independent local HVAC technician; this page sets out the county's own figures.
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In brief: 818 square miles of Massachusetts, a climate read from BEVERLY MUNI AP, MA US's normals, and a heating pressure as the county's dominant one — 6,103 heating degree days set against 611 cooling degree days in an average year. TempReach USA does not do the work itself; it is a referral service, and one call connects you with an independent local HVAC technician serving Middlesex County.
The climate figures on this page are the primary metro's NOAA 1991-2020 normals — climate normals recorded at BEVERLY MUNI AP, MA US, the station for the Boston metro this county belongs to. An average year there brings 6,103 heating degree days, 611 cooling degree days, 44.89 inches of precipitation, 10.0 days at 90 degrees or above and 126.1 nights at or below freezing, around an average temperature of 49.8 degrees.
The neighbours tell part of Middlesex County's heating story: Rockingham County, Strafford County, Suffolk County are among the counties around it, all reading the same record at BEVERLY MUNI AP, MA US, all filling their diaries in the same cold weeks. What separates this county's share is its own ground — 818 square miles lying west of the Boston metro's centre, roughly 18 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.
Distance is the county fact the climate table leaves out. Middlesex County's centroid lies west of the Boston metro's centre, roughly 18 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 81 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.
81 ZIP codes reach into Middlesex County's 818 square miles, among them 01431, 01432, 01450, 01460 — an average of 10.1 square miles of county ground per code. The codes are more than a mailing grid here: they are how the county's service ground divides in practice, each code holding its own mix of housing eras, its own streets of systems ageing on their own schedules. A call in one code and a call in the next can be the same fault in different decades of house.
There are 6 counties on Middlesex County's neighbour list, Rockingham County, Strafford County, Suffolk 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.
Two numbers organise Middlesex County's heating and cooling year: 6,103 and 611, the heating and cooling degree days in the normals at BEVERLY MUNI AP, MA 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: 49.8 degrees as the year's average temperature, 10.0 hot days, 126.1 freezing nights, 44.89 inches of precipitation. Every paragraph on this page is, in the end, a reading of those six numbers on this county's ground.
Name the ground and the work follows: in Middlesex County, the 6 listed communities — Lowell, Newton, Somerville, Framingham among them — hold the county's homes, and the homes hold its heating and cooling systems. The largest places supply the steadiest run of calls; the smaller communities supply the long drives and the systems fitted when those places were built. Either way, the county's 818 square miles are not read as one housing stock on this page, because on the ground they are not one: they are these communities, in this order, with these names.
Age is the county's second climate. The Boston metro's median home was built in 1963, and 67.0% of its homes predate 1980 — in Middlesex County, that share is the older districts and the long-settled communities, where ductwork from an earlier equipment era still serves replacement systems. The newer share, 15.3% built since 2000, concentrates in the county's growth edges. The service diary divides along that line: deep equipment-and-duct conversations at the old end, first-replacement and control conversations at the new one.
There is a reason the coverage on this page is described county-first. Heating and cooling demand is generated house by house, and houses sit in counties: in Middlesex County's case, across 818 square miles that hold 6 listed communities and 81 ZIP codes, west of the Boston metro's centre. The metro frame matters — the station, the housing eras, the problem ranking all come from it — but the county is where the frame touches the ground, and the ground is where the systems are.
City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.
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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 Middlesex County and the Boston 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