Leader Among Commercial and Industrial Professionals

Excellent service and installation, quality products, and highly trained service technicians are what have established AAA Mechanical Contractors as a leader among commercial and industrial plumbing, heating & air conditioning professionals.

We service all brands of equipment from small motel through the wall units to the largest commercial and industrial systems.

Service Division

Factory Trained Technicians

Whether you are in need of plumbing, heating, air conditioning, refrigeration service, or need an entire system replaced, we have factory-trained technicians ready to serve you.

Our technicians go through a five-year training program that includes 1,700 – 2,000 hours of on the job training per year, along with 1,000 hours of classroom training over the five-year program.

We take pride in our skills and ability to diagnose and correct a client’s problem along with providing high quality products.

24/7 Support

In order to meet our customer’s needs at any time, we offer Emergency 24 hour support, 7 days a week. Some mechanical failures are unforeseen and our service department is prepared for round the clock service.

Service Division



  • Factory Service representative for A O Smith and State water heaters
  • Water heater repair / replacement
  • Backflow testing and repairs
  • Faucet repair / replacement
  • Sump pump replacement
  • Toilet repair / replacement
  • Water line, drain line repair / replacement


  • Gas furnaces repair / replacement
  • Boilers repair / replacement
  • Rooftop units (RTU)
  • Makeup Air Units (MAU)
  • Hydronic and Steam Boiler
  • Hanging Heaters
  • Gas and Electric Furnace
  • Heat Pumps
  • Air Handling Units (AHU)
Air Conditioning

Air Conditioning

  • Air conditioning, repair / replacement
  • Chillers repair / replacement
  • Rooftop unit
  • Heat Pumps
  • Air Handling Units
  • Mini Splits
  • Package Units
  • Split system
  • Chillers
  • Cooling Towers
Preventative Maintenance

Preventative Maintenance

AAA Mechanical Contractors, Inc. Service Division offers preventive maintenance agreements which provide our customers with the comfort in knowing their equipment is regularly serviced and ready for the most extreme weather conditions Iowa has to offer.

Preventative maintenance increases performance and efficiency while providing longer life for the equipment.

Below are some of the checks, adjustments, and tests performed during preventive maintenance. Our program will be custom tailored to the specific equipment along with your needs to fit your operation.

  1. AAA Mechanical Contractors, Inc. will perform the inspection of the Heating and Air Conditioning equipment at the XYZ Company.
  2. Test run equipment to check operating controls.
  3. Make necessary adjustments for the efficient operation of the equipment.
  4. Oil or grease all bearings, including motors, fan and damper bearings.
  5. Inspect belts for wear and tension. Adjust or replace if needed.
  6. Inspect for leaks that may have occurred on the equipment or piping.
  7. Inspect conductors for pitting and wear, tighten electrical connections.
  8. Replace filters with pleated high efficiency filters.
  9. Fall Service- Check burners for proper operation, adjust if needed. Check safety controls.
  10. Spring Service- Check and clean condensers, start and check compressors, check for leaks and proper charge. Check condensate pans, drains, and clean.
  11. Check operation set back controls, times, and temperatures.
  12. Instruct Owner / Manager of any repairs needed to obtain approval.
Refrigeration Services

Refrigeration Services

  • Walk in / Reach in Coolers
  • Walk in / Reach in Freezers
  • Ice Machines


Building Automation

Building Automation

  • Digital Control Automation
  • Web Based Controls
  • Automated Alarms and Alerts
  • Professional Graphics
  • Local Experts
Special Equipment

Special Equipment

  • Liebert Units
  • Desert Aire Units
  • Rapid Units