Commercial HVAC Services

Knox, IN Commercial Repair, Tune-Up, and Install


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McGrath Refrigerationstarstarstarstarstar4.9 / 5

70 Total Reviews 574-772-3575$2520 S US 35, Knox IN

McGrath is Your One Call for All Commercial HVAC Services

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Having your HVAC system running smoothly is crucial to your business. McGrath Refrigeration Heating & Air Conditioning has been providing high quality commercial HVAC systems for both homeowners and businesses in Knox and Starke Counties, Indiana since 1967.

  • We provide prompt professional HVAC services
  • Enjoy improved comfort with our Maintenance Plan
  • McGrath can tackle any HVAC repair you need
Call Mcgrath for furnace repair services today!

We Work on All Types of Systems

  • Commercial gas furnaces
  • Rooftop gas packs and packaged HVAC systems
  • Split commercial AC and heat pump systems from 3 - 30 ton
  • Computer room air conditioning systems
  • Commercial boilers
  • Radiant tube heaters
  • Gas fired and hydronic unit heaters
  • Make-up air systems and ventilation systems
  • Cooling towers and closed loop heat pumps
  • Variable refrigerant flow (VRF) systems
  • Energy management controls

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Call Mcgrath for furnace repair services today!


McGrath Refrigeration Heating & Air Conditioning knows that it is crucial to keep your commercial HVAC up and running all year long. No matter what type of business you are in having a comfortable indoor space is important. That is why we offer our clients maintenance agreements. By maintaining your system you are keeping on top of it and not allowing down time to happen. No Downtime = More Money.

Maintenance Agreements Benefits

  • No Downtime
  • No Emergency service calls
  • Peace of mind knowing your system is up to date
  • Efficiency, keeping your system in tip top shape will save you money
Call Mcgrath for furnace repair services today!

Peace of Mind with McGrath

  • Now in our third generation, we have been family owned and based in Knox, IN since 1967.
  • We are an Armstrong Comfort Team dealer. This reflects our long term commitment to technology, training, and customer service.
  • All of our HVAC technicians are licensed and insured. We have decades of experience providing complete commercial and residential heating, cooling, and refrigeration services for our friends and neighbors.

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