• Heating | Columbia, MO | A-1 Mechanical | 573-819-8975

    Depend on our 25 years of experience for great HVAC

    Let our experienced professionals provide your home or business high-quality HVAC solutions. We offer a one year warranty on repairs and a one year guarantee on installations. 


Commercial | Columbia, MO | A-1 Mechanical | 573-819-8975

Call for reliable cooling solutions

As the temperature rises this spring and summer, call our knowledgeable professionals for dependable commercial and residential cooling solutions.

Air conditioning 

Get cost-effective heating services

Depend on our expertise and reliable service for high-quality heating installations, repairs, and services. We also offer top-of-the-line tankless water heaters!

Cost-effective heating 

Repairs | Columbia, MO | A-1 Mechanical | 573-819-8975

Rely on our quality HVAC repairs

Take advantage of our worry-free HVAC repairs that will make sure your home or business is always the right temperature. We service all brands.

Reliable HVAC repairs 

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