HVAC Service & Maintenance in Wisconsin

Commercial HVAC service statewide. Residential service within about 40 miles of our shop.

Full-Service HVAC Repair and Troubleshooting

When heating or cooling stops working, you need answers you can trust. Our technicians focus on direct troubleshooting. Commercial HVAC systems depend on: When one part starts failing, the impact can spread across the entire building. We use diagnostic tools and hands-on testing so repairs solve the real problem—not just the symptom.

  • Reliable airflow
  • Balanced fuel or electrical delivery
  • Strong mechanical components built for long run times
  • You get:
  • Clear findings
  • Practical repair options
  • Repairs that restore dependable comfort and performance

Equipment We Service (All Brands)

We service all brands and work on a wide range of HVAC and mechanical equipment, including: We also support key life safety HVAC-related components, including:

  • Rooftop units (RTUs)
  • Air handlers
  • Boilers
  • Air-cooled chillers
  • Pumps
  • Exhaust fans
  • Air distribution equipment
  • Temperature control systems
  • Fire dampers
  • Smoke detectors

Planned Maintenance That Protects Your Budget

Proper maintenance helps equipment run efficiently throughout its lifespan and can reduce daily operating costs. It also helps prevent surprise breakdowns that lead to emergency calls and lost time. Each program is tailored to your facility. That means we focus on your actual equipment, your usage patterns, and the needs of your building.

  • Our maintenance programs are built to:
  • Extend the life of your equipment
  • Reduce energy costs
  • Maintain comfort for employees, customers, and occupants
  • Keep equipment operating at peak performance

What Our Maintenance Visits Focus On

Regular maintenance is not just a quick look. It’s detailed work that helps systems run better and last longer. This helps you avoid costly repairs, improve indoor air quality, and keep heating and cooling steady.

  • Maintenance can include:
  • Thorough inspections
  • Cleaning and adjustments
  • Testing for safe operation
  • Performance checks to support efficiency
  • Catching worn parts early to avoid bigger failures

Experience Across the Systems That Matter Most

Many buildings have a mix of systems that all have to work together. Our customers benefit from the full range of service support we can offer, including expertise in: Air distribution equipment (air handling units and rooftop units) We also troubleshoot the special needs of equipment found in unique buildings, where standard fixes don’t always apply.

  • Primary equipment (boilers and chillers)
  • Life safety equipment (fire dampers and smoke detectors)
  • Temperature controls systems

A Service Department Built on Long-Term Relationships

Our service division has grown over time because of: We don’t want to be the company you only call during emergencies. We want to be the team that helps you reduce emergencies in the first place.

  • Skilled, customer-oriented technicians
  • Quality workmanship
  • Strong relationships built with customers

Frequently Asked Questions

Do you service all HVAC brands?

Yes. We service all brands of HVAC equipment.

What equipment do you service?

RTUs, boilers, air handlers, exhaust fans, pumps, air-cooled chillers, air distribution systems, controls, and more.

Do you offer maintenance programs?

Yes. Our programs are tailored to your facility and designed to keep equipment operating at peak performance.

Do you provide commercial service statewide in Wisconsin?

Yes. Commercial service is available across Wisconsin.

Do you offer residential HVAC service?

Yes. Residential service is available within about 40 miles of our shop.

Ready for HVAC Service & Maintenance Help?

Contact H&H Mechanical Contractors today. Commercial work statewide in Wisconsin.