Specializing in Heating & Cooling Equipment


Commercial Refrigeration

Installation, Sales, Repair, & Service

  • Professional team of technicians
  • Honest, Dependable Service 24/7
  • Servicing all brands including

We service york lennow carrier rheem ruud trane

St Louis Furnace Repair

At Tri State Mechanical Service we repair, maintain and replace all kinds of furnaces and boilers for homes and businesses in the STL metro area. Our technicians are well equipped to work on natural gas, electric, propane and oil furnaces. We understand that a heating emergency can happen suddenly without warning. This is why our experienced team is available 24 hours a day, seven days a week, to provide fast, reliable, affordable heating repair. As a full-service energy conservation contractor, we provide complete solutions, factory certified installers, and competitive rates.

Rest assured that every customers of ours is valued, your time and money is respected, and your satisfaction is the aim of every member of our team.

It’s as simple as that. Learn more below or Give us a call. You’ll be glad you did.

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Commercial Heating Service

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Residential Heating Service

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Commercial Furnace Repair & Replacement

Tri State Mechanical Service specializes in commercial furnace repair as well as boilers and heating equipment maintenance. No surprises! Just good old fashioned honest service. 24 hour: 7 day service. Our workmanship is guaranteed and backed by our company name that has been serving the St. Louis Metro and Central Missouri area since 1989. We service all brands such as Amana, Bryant, York, Trane, Carrier, and Lennox just to name a few. Check out our gallery to see recent projects were have worked on. Over the last 30 years we have serviced office buildings, churches, schools, restaurants and grocery stores, just to name of few.  Maintenance contracts are a great way to to save money and hassle when you anticipate needing on call service throughout the seasons.

When you are ready to get a quote our bidding process is hassle free.  Were are available by phone or email and look forward to meeting your facilities heating needs.  See our testimonials page to learn why people love working with us.

Our company has worked with Tri-State Mechanical for several years. The office staff and technicians have always gone above and beyond to service our customers’ needs timely and accurately. The technicians are very professional, knowledgeable and friendly. I would recommend Tri-State for all your service needs.
Johnson Northwest

You can count on our experienced technicians. Each is a certified factory-trained employee, experienced in the service and repair of all major brands of furnaces, boilers and heating systems. Trust us to repair your furnace right the first time.

If your looking for new equipment you can rest easy knowing we offer the fairest pricing as we want your long term business.

Save energy and get paid!! For high efficiency replacement or install of a 94% or higher efficient furnace. Get paid for other upgrades such as new programmable setback thermostats and blower motor replacement. See 2018 tax details here
Call us for more details on how you can save energy and get paid all at the same time.

Why wait for service?

Call us today to schedule your furnace installation or repair in St. Louis, including Brentwood, Clayton, Chesterfield, Clarkson Valley, Town & Country, Ladue, Creve Coeur, Kirkwood, Webster Groves, Sunset Hills, Maryland Heights, Ballwin, Ellisville and Affton, Missouri. These are just some of the townships where we do business.

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