414-304-9500 [email protected]

Commercial HVAC

A-1 Services is your full-service source for commercial heating, air conditioning and ventilation. We provide quality and economical solutions for your HVAC and Ventilation needs.

Maintenance and Repair

  • Repair of all types of commercial equipment
  • Planned maintenance services and full-service agreements designed to keep buildings operating efficiently and troublefree
  • 24 hour response available by calling 414-304-9500 Submit service requests online


  • Replacement of all types of commercial equipment
  • Specially trained technicians to replace your system
  • Featuring all major brands including Trane, Bryant, Lennox & York; premier manufacturers of heating and cooling products worldwide


  • Design/Build commercial construction services
  • Value engineering to bring your project in under budget
  • Office, warehouse, retail, restaurant, manufacturing, computer rooms
  • Air conditioning, heating, ventilation, filtration 


Our continued success depends on referrals and repeat business from satisfied customers. That’s why A-1 Services is committed to providing the highest level of customer service in the industry. We provide 24-hour emergency service 7 days a week. If you are in need of our services, give us a call!