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Heating & Cooling Services in Fredericktown, MO, You Can Count On

When you call Trustworthy Heating & Cooling LLC, you’re not just getting HVAC service—you’re getting a partner who treats your home like his own. As a veteran-owned, owner-operated company, we’ve been serving Fredericktown and the surrounding Missouri communities for decades with honest work, fair pricing, and expert repairs on all makes and models.


From routine service calls to full system replacements, your comfort is our mission—and we take that seriously.

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Local HVAC Help Without the Hassle

No call centers. No upsells. Just real service from someone who actually answers the phone and shows up. When you hire us, you work directly with the owner, not a random technician or third-party contractor. That means faster communication, more reliable results, and a job done right the first time.

What We Offer to Homeowners in Fredericktown and Beyond

A furnace is installed in a room next to a door.
A room with a window and a air conditioner hanging from the ceiling.
A large air conditioner is mounted on the side of a house.

Residential HVAC Service for All Brands

We work on Lennox, ComfortMaker, Samsung, and just about anything else out there. If it can be fixed, we’ll fix it.

Why Trustworthy Heating & Cooling Lives Up to the Name

Veteran-Owned, Integrity-Led

We believe in showing up, doing the job right, and standing behind our work—every time.

Owner-Operated Means You Get Our Best Every Time

No passing you off to junior techs or subcontractors. Your job is handled with the same care we’d give our own home.

Decades of Community Reputation

We’ve built our business on word of mouth, and that only happens when you treat people right. That’s what we’ll do for you.

  • ⭐⭐⭐⭐⭐

    Shawn was excellent to work with. He replace our  very old gas furnace with a new comfort maker He also installed central air condition. I am extremely pleased with his work. He also gave me an estimate so I knew exactly what it would cost.


    Roger S.

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  • ⭐⭐⭐⭐⭐

    My family has chosen this company several times over the years and my personal second time choosing them since moving to a new home. My old unit was taken out by a neighbor's tree and Shawn was out within the next couple days for an estimate on a new unit. Even after dealing with the insurance fiasco he was patient and more than happy to help out. Quick, professional, and down to earth. Would definitely recommend to the next person.


    Tristin K.

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  • ⭐⭐⭐⭐⭐

    When our heating system went out, we had a Larger, More Popular company come out and check it out. All they were interested in was selling and financing us a new system. I had Shawn from Trustworthy Heating and Cooling come and check our system. He assessed it and gave us a qoute, without pressuring us. He came back a couple days ago and fix our system for less than qouted, we did not need a new system! We have heat now, and the family is happy and I am very pleased with the professional service Shawn gave us. Would highly recommend Trustworthy, as they were highly recommended to me.


    Bill K.

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  • ⭐⭐⭐⭐⭐

    Needed a new system after the 20 year old system finally gave up the ghost. Shawn is awesome. I don't know anything about systems and he sat down and explained each option and the benefits of each. He even showed up on the weekend to charge the old system while the new was on order. Now we are rocking a new modern system and loving it. If you want honest up front dealings then call Shawn.


    Warren R.

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  • ⭐⭐⭐⭐⭐

    Extremely impressed with the service. It is reliable and professional. Trustworthy Heating and Cooling, the name says it all trustworthy and he lived up to it 100 💯 percent! I would recommend him to anyone needing HVAC work. Thank you


    Kimberly Ann G.

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HVAC Service That’s Actually Worth Calling About

Whether it’s a weird noise, a cold house, or a broken AC in the middle of July, Trustworthy Heating & Cooling LLC is ready to step in. Call now or click below to schedule a service visit and work directly with a trusted local HVAC professional who actually shows up.

Contact Us Today!