The professionals at Gartman Mechanical are available for any of your process requirements, new construction, or service needs to existing equipment. We offer design build services, sheet metal services, hot water, steam, chilled water piping and much more. Our qualified technicians aptly handle the challenges of energy efficiency, building occupancy, heating/cooling, load calculation, equipment selection, and budget considerations.

Gartman Mechanical will install & maintain your system to operate at optimum performance & efficiency. Our technicians are fully trained with the ability to repair any make or model.

24-hour emergency services at 920-231-5530.

To schedule a repair or to request a free estimate, please call us at 920-231-5530 or send an email to This email address is being protected from spambots. You need JavaScript enabled to view it.

Other servces include:

  • Variable Air Volume (VAV)
  • Unitary Heat Pump
  • Single/Multi Zone Rooftop
  • Dual Duct
  • Dust and Fume Collection (Donaldson Torit, Messer)
  • Fan Coil
  • Induction
  • Chilled and Hot Water
  • Direct Expansion Cooling
  • Energy Recovery
  • Kitchen Hood Ventilation Systems
  • Kitchen Cook Ovens and Flat Top Repair
  • Commerical Ovens
  • Process Air Repair
  • Steam Piping
  • Ducted Supply, Return and Exhaust
  • Boiler Feedwater Systems
  • Process Air, Chiller, Gas and Hot Water Piping


  • Boiler
  • Heat Exchanger
  • Chillers
  • Cooling Towers
  • Evaporative Coolers
  • Pump
  • Air Handling Units
  • Roof Top Units
  • Condensing Units
  • Humidifiers
  • Electrostatic Filters
  • Heat Exchangers
  • Door Heaters
  • Stack Economizers
  • Incinerators Air Separators

GMS, Inc. can also provide the following services:

  • Cascade Systems
  • PSM Cad Drawing Services
  • Design/Build Turnkey Projects
  • Service and Maintenance
  • Refrigeration Control Systems
  • Refrigeration Parts and Service

We also specialize in the installation of all types of refrigeration equipment such as:

  • Walk-in Coolers
  • Walk-in Freezers
  • Ice Merchandisers
  • Ice Cream Freezer
  • Open Air Cases
  • Reaching Freezers and Coolers
  • Evaporative Condenser
  • Self-Contained Package Unit

Client Testimonials

  • Thank you so much for coming out on one of our coldest nights. We are appreciative. The prompt, efficient service and positive attitude. You have won our trust. Sincerely,


  • Your gentlemen successfully identified some faulty parts causing our never-ending heating struggles. We really appreciate what they are doing for us.


  • I want to thank you and the team for the professional installation of the garage heater. It looks great and so far is doing the job. Not that I wish for colder weather, but I can’t wait to see how warm the garage is when it’s -20 outside. This will be a game changer this winter. N0 more warming up the car before leaving for work.

    Dr. Tim

  • Thank you for all your assistance, guidance & service. Your crew is always knowledgeable, resourceful, friendly and recognized as part of our team. Gartman Mechanical Services has truly enhanced our company’s infrastructure to become a leader in the composites industry. THANK YOU!


  • Thank you so much for solving our issue with the hot water tank! Truly appreciated your positive attitude thru everything. We will recommend your company! Thank you again for your help!

    Carla & Mike

  • To the Gartman Employees, thank you for the great service. Your employees were very kind and polite. We feel you quoted us a great price and would recommend you to other people. We are a very satisfied customer. Many thanks again,

    Glenn & Ruth

  • Happy Customer Here! What prompt service too!! Tom did a great and a thorough job cleaning up and fixing up the existing unit.


  • Thank you for taking care of the boilers at the townhomes we manage. We appreciate so much the prompt, courteous, thorough work and fair pricing you offer.

    Jodi & Dave

  • Dear Tim & GMS, I wanted to thank you for all the many years of great service you have provided, especially most recently regarding the assistance with the sale inspection. Your expertise and customer service has been awesome.


  • We were very impressed with Brian’s work, conscientiousness and promptness. He was very polite also. It’s nice to be the recipient of such great service.


  • I cannot tell you how grateful we are. Thank you for the good service and promptness.


  • Thank you for the always wonderful & quick service.


  • Thanks to the Gartman Team for the professional services we needed and in a very timely manner.


  • You are all wonderful! Thank you so much for all of your help!


  • Thank you for a great job, everything is working well.


Gantry 5
520 W. South Park Avenue