Why Choose Us?
At John's Mechanical Services, we strive to set the highest standards in our industry.
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We thoroughly screen all employees ensuring they pass a background check and drug test before they join our team.
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We only employ technicians with the certifications and expertise necessary to do every install and service repair; and do it very well.
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Locally Owned & Operated. We are a local family-owned company right here in Marion that cares about our customers and the communities we serve.
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Superior Craftsmanship. All of our technicians are highly trained and experienced in air conditioning, heat pumps, furnaces, boilers, ductless systems and indoor air quality. We only use quality parts from the top manufacturers.
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Fully Licensed & Insured. We are a team of professionals, fully licensed and insured for the safety of our customers and employees.
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Affordable Pricing with No Surprise Fees. We keep our prices competitive to offer our customers the most value. We will not sell you anything that you don’t need. Remember, quality doesn't cost, it saves!
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We stand behind all of our work with a 100% Money-Back Guarantee!
With John's Mechanical Services, your comfort is our satisfaction, and your satisfaction is our guarantee!
We Are Here To Serve You
Residential Cooling & Heating Services

From service to installation, from upgrading your AC or adding a ductless mini-split to your new addition, we can take care of all your indoor comfort needs. Suffering from allergies or having issues with humidity? Ask about our Indoor Air Quality options. We offer free proposals for all installations.
Commercial HVAC/R Services


Whether you need a roof top unit serviced, a boiler installed, or a new reach-in cooler or ice machine added to your business, we can handler your commercial HVAC and Refrigeration needs. We can fabricate your ventilation needs as well--from air flow needs to kitchen exhaust.
Energy Audits

John's Mechanical Services is blessed to have both a certified building analyst professional and technician. We will assess your building envelope for inefficiencies that lead to an increase in utility consumption. We provide blower-door testing with a comprehensive plan for solving your energy-consuming leaks in your walls, ceiling, and ductwork. See the potential tax credits and rebates on our website. Then give us a call.
Insulation Services
Insulating your home or business is provides one of the fastest returns on your investment.
We provide:
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expandable spray foam insulation
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blown-in insulation
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crawlspace encapsulation and dehumidification services
Tax credits and Ameren Rebates are available​. See them on our website!
