Call Now
Website
Call
Business Details
30 Years
experience
Emergency
services
Expert HVAC & Plumbing Solutions MA & NH
Founded in 1996, Main Stream Mechanical has established itself as a trusted provider of comprehensive HVAC and plumbing solutions across Massachusetts and New Hampshire. Our team of technicians brings over 60 years of combined experience in heating, cooling, and plumbing systems, ensuring expert service tailored to each client's needs. We specialize in gas and oil furnace installations, boiler services, ductless AC systems, and emergency repairs, backed by ongoing training programs and certifications. Our commitment to customer satisfaction is evident in our 24/7 emergency response availability and same-day service capabilities. With a fleet of fully stocked vehicles and licensed professionals, including Master and Journeyman Plumbers, we deliver efficient, reliable service for both residential and commercial properties. Our participation in programs like Mass Save Rebates and partnerships with Mitsubishi Diamond Contractors underscores our dedication to energy-efficient solutions.

Every technician undergoes rigorous training, ensuring proficiency in the latest HVAC technologies and installation techniques. We maintain strict adherence to safety standards and industry best practices while providing transparent communication throughout every project. With service areas spanning over 100 communities, we remain accessible to both new and established clients. Our track record of customer testimonials consistently highlights our punctuality, professionalism, and problem-solving expertise. Backed by state licensing (MA #12625, NH #3855) and full insurance coverage, we continue to build long-term relationships through dependable service and technical excellence.
Services
Gas Furnace Service Oil Boiler Installation Ductless AC Installation Emergency Heating Repair Water Heater Replacement Plumbing Repairs Annual Maintenance Oil to Gas Conversion Central AC Repair Generator Installation
Details
  • Year established: 1996
Highlights and features
  • We have over 28 years of local HVAC expertise since 1996
  • Our team holds Master and Journeyman plumbing certifications
  • We maintain state licensing in MA (#12625) and NH (#3855)
  • We offer 24/7 emergency service with rapid response times
  • Our vehicles are fully stocked for immediate repairs
What people say
Excellent service Knowledgeable technicians Prompt response Highly recommend Professional team
Services
Emergency Heating Repair
Our emergency heating repair service provides immediate assistance for furnace and boiler failures. With 24/7 availability and fully equipped service vehicles, we address critical heating issues at any hour. Customers consistently praise our rapid response times and technical expertise in resolving urgent heating problems.
Ductless AC Installation
Specializing in Mitsubishi mini-split installations, we offer energy-efficient cooling solutions for homes without ductwork. Our certified technicians ensure proper system sizing and placement for optimal performance. This service includes consultation, installation, and warranty support for both single and multi-zone systems.
Oil to Gas Conversion
We facilitate complete oil-to-gas heating system conversions with expert guidance and implementation. Our process includes system assessment, equipment installation, and coordination with utility providers. Customers benefit from lower fuel costs and improved efficiency through modern gas heating technology.
Annual Maintenance
Our comprehensive maintenance plans cover furnaces, boilers, and AC units with seasonal inspections and tune-ups. Regular maintenance extends equipment lifespan and maintains manufacturer warranties. Technicians perform safety checks, efficiency optimizations, and component inspections during each visit.
Water Heater Replacement
We offer complete water heater replacement services including tank and tankless options. Our technicians assess home requirements to recommend appropriate capacity and efficiency levels. The service includes old unit removal, new installation, and proper disposal of existing equipment.
Questions
What areas do you service?
We serve over 100 communities across Massachusetts and Southern New Hampshire, including Amesbury, Andover, Beverly, Haverhill, and surrounding areas.
Do you offer emergency services?
Yes, we provide 24/7 emergency HVAC and plumbing services with immediate response for critical heating and cooling issues.
What payment options are available?
We accept major credit cards (Visa, Mastercard, American Express) and offer third-party financing options for larger projects.
Are you licensed and insured?
Yes, we hold Massachusetts License #12625, New Hampshire License #3855, and maintain full insurance coverage for all services.
How quickly can you schedule service?
We offer same-day service for emergency repairs and typically schedule routine appointments within 24-48 hours.
Do you work on weekends?
Our technicians are available 24/7, including weekends and holidays, for emergency heating and plumbing repairs.
Reviews (6)
Ryan Geary
May 30, 2022 Report
I had a plumbing issue that could have turned into a real nightmare, real quick. I contacted John and he set me up with someone who came out and stopped a leak almost immediately and probably saved my ceiling. The price was incredibly reasonable also. Fast forward a couple months my mini split system stopped working so I reached out to John again and within days they had come out, diagnosed the problem, ordered the parts, and repaired the entire system. Couldn't give any higher praise to this business if I tried, they're super fast, highly efficient, and everyone who works for them are genuinely nice people.
Elisa K.
May 09, 2022 Report
The office staff is friendly and helpful, and the technicians always throughly explain their findings and answer any questions I may have. Great service! Service: Heating system repair
Oom Developers
Mar 02, 2022 Report
The serviceman was efficient and tidy. He performed the yearly maintenance service on our heating system and answered our questions in detail. Great work. Service: Heating system maintenance
Bethany Silva
Jan 18, 2022 Report
I had a great experience with Main Stream Mechanical with our removal of our old oil boiler and installation of our new gas boiler and water tank. Eric was great in providing all of the information needed when he came to provide a quote and answered all my questions. We had to deal with National Grid to get a new gas line, account, and MassSave loan, and though National Grid was a little difficult to work with, Main Stream Mechanical was amazing and very accommodating to National Grid's ever moving schedule.

When National Grid finally had the gas line installed Main Stream's team lead by Nick was professional, courteous and just all around great. They removed all the old oil boiler and installed everything within a few days and cleaned up as if they were never there. Our experience went very well with Main Stream Mechanical and we'll be surely using them in the future!
Jeff Ferrante
Jan 12, 2022 Report
I have used Main Stream for the past 8 years in two different homes. They are responsive, professional, knowledgable, and thorough. I use them for all of my heating, air conditioning and general plumbing needs. Services: A/C system repair, A/C system maintenance, Heating system maintenance
Dave Vincett
Aug 09, 2021 Report
Mainstream Mechanical performed repairs on my central AC system and also on my tankless heat and hot water system. Every touch point from making the appointments to having their Technicians in our home was simple and very pleasant. The entire staff is professional, pleasant and highly efficient. It was a pleasure to do business with them and I would highly them to everyone.