Commercial HVAC Services

Full-service commercial HVAC for offices, restaurants, retail, and industrial. Installation, maintenance, 24/7 repair.

Commercial HVAC You Can Count On

Commercial systems are bigger, more complex, and more expensive when they go down. We have been servicing commercial HVAC across SE Massachusetts and Rhode Island since 1970. Rooftop units, split systems, VRF, chillers, cooling towers, makeup air units.

Sheet metal fabrication and custom ductwork built in our Fall River shop. Non-standard runs and specialty fittings made in-house instead of waiting on a supplier.

What sets us apart from commercial-only outfits: plumbing, electrical, and refrigeration under the same roof. GCs and property managers call us because one company covers all four trades and we show up when we say we will.

Rooftop to Basement

All commercial HVAC system types

In-House Fabrication

Custom sheet metal from our Fall River shop

Four Trades

HVAC + plumbing + electrical + refrigeration

55 Years

Commercial experience since 1970

⭐⭐⭐⭐⭐ Donna is always so polite and accommodating. The technicians are knowledgeable and professional. We've used Triangle for years and wouldn't call anyone else.

Karen L.

Residential Customer

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Services Form — Triangle Mechanical (#5)

📞 Call (508) 501-7424

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Our Installation Process & Brands

Free Assessment

We evaluate the space, measure rooms, and check your electrical panel. No cost, no obligation.

Custom System Design

We spec the right system for your home and put the price in writing before any work starts.

Professional Installation

Our licensed techs handle HVAC, electrical, and any panel upgrades. All in-house. No subcontractors.

System Training & Warranty

We walk you through the controls, register your warranty, and stand behind the work with a one-year labor guarantee.

Commercial HVAC Pricing

Commercial projects are quoted individually. System type, tonnage, building access, and controls scope drive the number, so a flat rate would be a guess.

Maintenance contracts run monthly, quarterly, or annual, priced to your equipment list.

Emergency repair rates are quoted on dispatch, before the truck rolls.

Replacing rooftop units or commercial HVAC? Mass Save’s commercial program covers Massachusetts businesses, and Rhode Island Energy offers custom incentives for equipment upgrades, with state Clean Heat RI funds available through the end of 2026. We handle the incentive paperwork as part of the job.

Commercial HVAC Quick Reference (2026)

Commercial projectsQuoted individually

Maintenance contractsMonthly / quarterly / annual

Emergency repairQuoted on dispatch

Every job is quoted before we start. Call (508) 501-7424 for a free estimate.

Why Homeowners Choose Triangle for AC Service

In-House Electricians

Most HVAC installers sub out the panel work. That means two companies, two schedules, two invoices. Our own electricians handle the panel work. One company, one invoice.

Mass Save Participating Contractor

We know which systems qualify, what documentation the program requires, and where homeowners usually lose money by picking the wrong equipment tier. We confirm your eligibility before you spend a dollar.

55 Years. Not a Startup.

Rebate money brought a lot of new companies into this market. Triangle has been at 425 Pleasant Street in Fall River since 1970. When your compressor needs warranty service in 2030, we will still be here.

Four Trades, One Company

Getting a mini split and notice the water heater looks rough? Want a generator quote while we are there? Heating, cooling, plumbing, electrical, refrigeration. One call, one truck, one bill.

What Our Customers Say

⭐⭐⭐⭐⭐They diagnosed a heating problem we had for over 20 years that no one else could figure out — including one of the guys from This Old House. They didn't give up until they solved it. The owner Tom is wonderful and Neil is a real gem!

⭐⭐⭐⭐⭐Donna is always so polite and accommodating. The technicians are knowledgeable and professional. We've used Triangle for years and wouldn't call anyone else.

⭐⭐⭐⭐⭐ AJ, Chad, and Tony did an amazing job on our church's HVAC system. Professional, clean, and on time. Triangle treats every job like it matters.

⭐⭐⭐⭐⭐ Called on a Sunday night with no heat. They had someone at our house within an hour. Fixed it on the spot. Can't ask for more than that.

⭐⭐⭐⭐⭐ We use Triangle for all our rental properties. One call for heating, plumbing, electrical — they handle everything. Makes my life so much easier.

What commercial properties do you service?

Offices, restaurants, retail, churches, schools, warehouses, manufacturing. SE Massachusetts and Rhode Island, roughly 50 miles from Fall River.

Do you offer maintenance contracts?

Yes. Preventive maintenance catches problems early. Monthly, quarterly, and annual agreements. Call (508) 501-7424 for a quote.

Can you handle new construction HVAC?

Yes. Design assist, installation, commissioning, and ongoing maintenance. We work with GCs on projects of all sizes. See our Ventilation & Ductwork page for fabrication capabilities.

Do you service rooftop units?

Yes. RTU repair, replacement, and preventive maintenance are core work for us. We service units on restaurants, retail plazas, and office buildings across Fall River, Providence, and the 50-mile commercial radius. Crane coordination, curb adapters, and controls are handled in-house.

Can you fabricate custom ductwork for commercial projects?

We fabricate sheet metal in our own Fall River shop. Non-standard runs, specialty fittings, and kitchen exhaust get built to spec instead of waiting weeks on a wholesaler. That keeps GC schedules intact, which is usually why they call us in the first place.

What is your response time for commercial no-heat or no-cooling calls?

24/7 emergency dispatch across SE Massachusetts and Rhode Island. Contract customers get priority dispatch. Call (508) 501-7424 and we will give you a real ETA, not a window.

Ready to Get Started?

Whether you need an emergency repair, a new installation, or a second opinion, Triangle is here to help. One call handles it all.