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South Shore Home Guide
Air-conditioning / heat-pump condenser units outside a home.

Department

Licensed hvac contractors serving the South Shore

HVAC contractors handle central air, boilers, furnaces, and increasingly heat pump conversions. Mass Save rebates drive a significant portion of current heat pump activity across the South Shore.

Typical project size
$5K-$25K
Higher end of the range
$3K-$15K
Lower end of the range
Massachusetts licensing
Refrigeration Technician License and/or Sheet Metal License
Verify any contractor’s license at elicensing.mass.gov.
Before you hire
Get written quotes from three contractors. On any residential job over $1,000, Massachusetts law requires a written contract with the contractor’s HIC registration number.

EditorialListings sorted by alphabetical order from public data. Full disclosure.

Directory

Sorted by alphabetical order · Data as of April 2026

Affordable Heating & AC LLC

Based in Plymouth

Years in business
28
Self-listed specialties
Heat pumps, Boilers, Air conditioning, Ductwork, Oil-to-gas conversion
Call(781) 583-1268Website

AJM Plumbing & Heating

Based in Rockland

Massachusetts licensing
HIC #33358· Publicly disclosed
Self-listed specialties
Plumbing, Heating, HVAC
Call(781) 853-1310Website
Sources (1)
  • MA HIC #33358 · Publicly disclosed on company source · captured April 2026source ↗

Aspinwall Plumbing, Heating & Air Conditioning

Based in Weymouth

BBB

A+

Accredited

Years in business
53
Massachusetts licensing
HIC #8140· Publicly disclosed
Self-listed specialties
Plumbing, Heating, Air conditioning, Mini-split systems, Navien tankless water heaters
Call(617) 539-7672Website
Sources (2)
  • BBB profile · captured April 2026source ↗
  • MA HIC #8140 · Publicly disclosed on company source · captured April 2026source ↗

Carmark Plumbing & Heating

Based in Pembroke

Massachusetts licensing
HIC #16083· Publicly disclosed
Self-listed specialties
Plumbing, Heating, HVAC
Call(781) 630-3278Website
Sources (1)
  • MA HIC #16083 · Publicly disclosed on company source · captured April 2026source ↗

Coastal Heating & Air Conditioning

Based in Quincy

Years in business
20
Self-listed specialties
Heat pumps, Boilers, Air conditioning, Ductwork
Call(617) 770-0636Website

Cool Comfort Services Heating & Air

Based in Plymouth

Self-listed specialties
Heat pumps, Ductless mini-split, Air conditioning, Boilers
Call(774) 503-9400Website

Endless Energy

Years in business
40
Massachusetts licensing
HIC #202202· Publicly disclosed
Self-listed specialties
Heat pumps, Ductless mini-split, Air conditioning, Boilers
Call(508) 501-9990Website
Sources (1)
  • MA HIC #202202 · Publicly disclosed on company source · captured April 2026source ↗

McKay Plumbing & Heating

Based in Plymouth

Massachusetts licensing
HIC #13693· Publicly disclosed
Self-listed specialties
Plumbing, Heating, HVAC
Call(508) 224-6584Website
Sources (1)
  • MA HIC #13693 · Publicly disclosed on company source · captured April 2026source ↗

Mount Pleasant Plumbing and Heating

Based in Plymouth

Massachusetts licensing
HIC #G3794M· Publicly disclosed
Self-listed specialties
Plumbing, Heating, HVAC
Call(774) 404-1200Website
Sources (1)
  • MA HIC #G3794M · Publicly disclosed on company source · captured April 2026source ↗

Old Colony Mechanical, Inc.

Based in Hingham

BBB

A+

Accredited

Years in business
35
Self-listed specialties
HVAC installation, Plumbing, Gas conversions, Sheet-metal ductwork, High-velocity AC (Space-Pak, UNICO), Hot water heaters
Call(781) 749-4995
Sources (1)

Raynard Heating & Air Conditioning

Based in Hanover

Years in business
28
Self-listed specialties
Boilers, Air conditioning, Heat pumps, Ductless mini-split, Oil-to-gas conversion
Call(781) 826-0971Website

Rego Electric Heating Cooling & Plumbing

Massachusetts licensing
HIC #187244· Publicly disclosed
Self-listed specialties
Electrical, Heating, Cooling, Plumbing
Call(508) 837-9464Website
Sources (1)
  • MA HIC #187244 · Publicly disclosed on company source · captured April 2026source ↗

True Blue Plumbing and Heating

Massachusetts licensing
HIC #16343· Publicly disclosed
Self-listed specialties
Plumbing, Heating, HVAC
Call(800) 649-5574Website
Sources (1)
  • MA HIC #16343 · Publicly disclosed on company source · captured April 2026source ↗

Directory data aggregated from public sources including Google Business Profile, the Yelp public directory, the Massachusetts Division of Professional Licensure contractor lookup, and Better Business Bureau accreditation listings. Review counts and ratings reflect publicly available data as of April 2026. This directory is based on publicly available data and may not include every licensed contractor in the area.

By town

HVAC Contractors by town

Town-specific pages include local building considerations for the category.

HVAC Contractors in HinghamHVAC Contractors in CohassetHVAC Contractors in ScituateHVAC Contractors in NorwellHVAC Contractors in DuxburyHVAC Contractors in HanoverHVAC Contractors in WeymouthHVAC Contractors in BraintreeHVAC Contractors in QuincyHVAC Contractors in MarshfieldHVAC Contractors in PembrokeHVAC Contractors in RocklandHVAC Contractors in AbingtonHVAC Contractors in PlymouthHVAC Contractors in KingstonHVAC Contractors in CarverHVAC Contractors in WarehamHVAC Contractors in MiddleboroughHVAC Contractors in HalifaxHVAC Contractors in PlymptonHVAC Contractors in HansonHVAC Contractors in WhitmanHVAC Contractors in East BridgewaterHVAC Contractors in HolbrookHVAC Contractors in Hull

This content is for informational purposes only. We recommend obtaining multiple quotes and independently verifying contractor credentials. See our disclosure and corrections policy.