Main Stream Mechanical

Our licensed technicians provide comprehensive gas furnace maintenance, repair, and installation services. We specialize in high-efficiency systems that reduce energy costs while maintaining optimal home comfort. With same-day parts availability and emergency service capabilities, we ensure reliable heating solutions for residential properties across Massachusetts and New Hampshire.

We offer professional oil boiler installation and conversion services with expert system sizing and configuration. Our technicians follow strict safety protocols while ensuring energy-efficient operation. We handle complete system replacements and conversions from oil to gas heating, providing seamless integration with existing home infrastructure while maintaining clean work environments.

Our Mitsubishi mini-split installations provide energy-efficient cooling solutions for homes without ductwork. We offer single-zone and multi-zone systems that mount through walls, ceilings, or near floors. These systems deliver precise temperature control while maintaining aesthetic appeal, ideal for home additions and older properties requiring modern cooling solutions.

We provide 24/7 emergency HVAC and plumbing repair services with immediate response times. Our fully stocked service vehicles enable on-site problem resolution for heating failures, frozen pipes, and system emergencies. Technicians handle urgent situations with safety-focused protocols while maintaining clear communication throughout the repair process.

Our licensed plumbers handle complete residential plumbing systems including fixture installation, pipe repairs, and water heater replacements. We specialize in emergency plumbing situations like burst pipes and frozen lines. With Master and Journeyman Plumbers on staff, we ensure code-compliant installations and repairs using industry-standard materials and techniques.

Experienced HVAC specialist with expertise in furnace diagnostics and replacement. Recognized for identifying critical system failures and providing safety-focused solutions that protect homeowners and tenants.

Certified technician specializing in system evaluations and energy efficiency consultations. Known for clear communication about replacement options and helping customers navigate Mass Save programs for cost-effective upgrades.

Experienced coordinator handling service scheduling and customer support. Recognized for prompt response times and maintaining clear communication throughout service appointments and installation processes.

Skilled estimator providing detailed project assessments and system recommendations. Known for thorough explanations of conversion processes and helping customers make informed decisions about heating system upgrades.

Experienced installer with focus on clean, efficient system replacements. Recognized for maintaining organized workspaces and completing complex installations while minimizing disruption to homeowners.

We provide complete heating, cooling, and plumbing services including installation, repair, and maintenance for residential properties across Massachusetts and New Hampshire.

Yes, our 24/7 emergency service handles urgent HVAC and plumbing situations with immediate response times and safety-focused solutions.

We operate throughout Massachusetts and southern New Hampshire, covering over 100 towns with licensed technicians in both states.

We accept major credit cards and offer third-party financing options for major system replacements and home improvement projects.

Yes, we're qualified to handle Mass Save HEAT program conversions and can help customers access available rebates and financing options.

As a Mitsubishi Elite Diamond Contractor, we provide a 12-year factory warranty on mini-split systems with extended service support.

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.

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

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

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!