Somerset & Hunterdon Counties, NJ

Heating, Cooling & Appliance Repair in Branchburg, NJ

Owner-operated HVAC repair, seasonal maintenance, and high-efficiency installations across Somerset and Hunterdon Counties. Honest diagnostics, clear pricing, and no call centers — you speak directly with the tech doing the work.

NJ Master HVACR Lic. #19HC00437000 · Fully Insured

What we repair & install

From no-heat calls to full heat pump and refrigeration installs, one call covers your heating, cooling and refrigeration needs — including oil to gas conversions.

Recent work

Installs we've completed for homeowners and businesses across Somerset and Hunterdon Counties.

Row of AC condensers installed by MJM in central NJTankless water heater installed by MJMDuctless mini-split installed by MJMGas furnace installed by MJM

See all 133 photos →

Why homeowners call MJM

You get the same experienced technician from the first call to the finished job — no call centers, no upsell games.

Straight answers. We explain the problem and the options before any work starts.

Repair or replace — your call. We fix what can be fixed and install when it makes sense.

Fully insured. Protection for you and your home on every job.

Local and reachable. Owner-operated in Branchburg, serving Somerset and Hunterdon Counties.

Proudly Serving Central New Jersey

Based in Branchburg, we provide prompt heating, cooling, refrigeration and appliance repairs throughout Somerset and Hunterdon Counties, including:

Somerset County

  • Branchburg, NJ
  • Bridgewater, NJ
  • Somerville, NJ
  • Hillsborough, NJ
  • Raritan, NJ
  • Bedminster, NJ
  • Basking Ridge, NJ
  • Bound Brook, NJ
  • Manville, NJ
  • Warren, NJ
  • Martinsville, NJ
  • Green Brook, NJ
  • North Plainfield, NJ

Hunterdon County

  • Flemington, NJ
  • Readington, NJ
  • Raritan Township, NJ
  • Clinton, NJ
  • Whitehouse Station, NJ

Nearby

  • Piscataway, NJ
  • Morristown, NJ

Don't see your town? Call 908-235-2728 — we likely cover it.

Need service? Let's get it fixed.

Call or text for fast scheduling, or email a description of the problem for an estimate.