Commercial HVAC and Chiller Service in Waukesha, WI

We service the chillers, boilers, rooftop units and building automation inside Waukesha County commercial and industrial buildings from an office on Highview Road in Waukesha, so a fault that crosses from a control point into a compressor stays with one contractor instead of splitting between a mechanical company and a separate integrator.


A Waukesha building is a local call for us, not a drive in from another metro.

Commercial and Industrial Facilities Only, Since 2008

  • In business since 2008, more than fifteen years on commercial and industrial mechanical systems.
  • Commercial and industrial buildings only. We do not take residential heating and cooling work.
  • Family owned, based at s46w32298 Highview Road in Waukesha, insured and bonded.

What Waukesha Facilities Call Us About

Five service lines cover almost every call that comes in from a Waukesha County building, and the same technicians handle all five.

When equipment goes down outside the maintenance calendar, an emergency call reaches a technician rather than an answering service, and you get scope, timing and cost before a truck rolls.

Chiller work is the core of the business rather than a sideline. We service water-cooled and air-cooled machines, including high-tonnage centrifugal and screw chillers, and a visit covers refrigerant charge and oil analysis, compressor and starter checks, approach temperatures and condenser tube cleaning. Larger scopes run to compressor overhauls and tube replacement, and we work on Carrier, York, Trane, Quantech and JCI equipment without brand limitation.

Rooftop and packaged units carry most of the cooling load in Waukesha office parks and retail centers, and they fail on belts, bearings, contactors, economizer linkages and curb and drain problems long before the compressor does. We service rooftop units, split and packaged systems, cooling towers, pumps and dedicated server-room cooling, and we replace units that are past the point where repair parts make sense.

Steam and hot water boilers, furnaces, unit heaters, radiant heaters and make-up air units all get serviced by the same team. A heating call covers combustion and burner tune-up, safety and limit control verification, circulator and feedwater checks, and the sequencing that decides when a boiler fires.

We install, program, integrate and troubleshoot building automation systems, and we verify sequences, setpoints, sensor calibration and interlocks against what the equipment is actually doing. Because we service the mechanical equipment too, a controls problem does not turn into a second contractor and a second diagnosis.

Scheduled maintenance agreements put chillers, boilers, rooftop units, towers and controls on a visit calendar sized to the building, with documented findings after each visit so a facility manager has a record to budget from. Most of the failures we get called out for on a Friday afternoon show up first as a reading on a maintenance sheet.

The Waukesha County Buildings We Keep Running

Three kinds of facilities make up most of our Waukesha work, and each one fails in its own way

A district chiller has to hold through the last week of August, and a boiler plant has to come back the first cold morning of the school year with students in the building. We work on district central plants, gym and auditorium air handling, kitchen make-up air and the controls that schedule all of it around an occupancy calendar.

On a leased floor in Brookfield or Pewaukee, a rooftop unit failure reaches tenants within the hour and the property manager hears about it before the technician arrives. We service multi-tenant rooftop equipment, central plants in larger office buildings, and the zone controls that decide which suite is comfortable.

In a Waukesha County plant, process cooling is tied to the production line, so a chiller or tower problem is a production problem with a dollar figure attached. We handle process chillers, cooling towers and pumps, compressed air and equipment cooling loops, and the ventilation and make-up air that keeps a shop floor within spec.

Industrial HVAC unit in a basement mechanical room, with a red ladder and large round access doors.

30+

Years in Business

Why Waukesha Facility Managers Keep Our Number

  • Family owned and based in Waukesha, in business since 2008, commercial and industrial only.
  • Founder Jim Jensen spent more than twenty years in Carrier and York factory service before starting the company.
  • Technicians hold master certifications and factory training from major equipment manufacturers.
  • Insured and bonded, with scope, timing and cost stated before a truck rolls.
  • Emergency calls reach a technician who can talk through what the equipment is doing, not an answering service taking a message.
  • One team covers the mechanical equipment and the building automation that sequences it.


School districts, office and retail properties and manufacturing plants across Waukesha County are on our service list, and mechanical contractors subcontract chiller work to us when a job needs a machine opened.

Questions Waukesha Facility Managers Ask Before They Call

  • How fast can you get a technician to a building in Waukesha?

    Our office is on Highview Road in Waukesha, so buildings in the city and across Waukesha County are a short drive rather than a trip in from another metro. During office hours, Monday through Friday 8am to 5pm, we can usually talk through the fault on the first call and schedule the visit the same day. Outside those hours, an emergency call reaches a technician directly.

  • Who services commercial chillers in Waukesha County?

    Advanced Chiller Services works on water-cooled and air-cooled commercial chillers throughout Waukesha County, including high-tonnage centrifugal and screw machines, and we service Carrier, York, Trane, Quantech and JCI equipment without brand limitation. Scopes range from refrigerant and oil analysis on a maintenance visit up to compressor overhauls and condenser tube replacement. Call (414) 899-4641 to schedule a site visit.

  • Do you work on houses as well as commercial buildings?

    Commercial and industrial facilities only. There is no residential side of the business competing for a truck or a technician, which is why the equipment we are set up for is chillers, boilers, rooftop units, cooling towers and building automation rather than furnaces in homes.

  • Do you cover Brookfield, Pewaukee and the rest of Waukesha County?

    Yes. Waukesha, Brookfield, Pewaukee, New Berlin, Menomonee Falls, Muskego, Elm Grove, Sussex, Hartland, Delafield and Oconomowoc are all regular stops, and the same crew covers the wider ten-county footprint from the Waukesha office.

  • What does the first call produce?

    A conversation with someone who can ask the right questions about the equipment, then a site visit. After the visit you get scope, timing and cost in writing before any work starts.

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Waukesha County First, Then Nine More Counties

Waukesha County is home ground, and these are the communities we work in most often:


  • Waukesha and Brookfield
  • Pewaukee and New Berlin
  • Menomonee Falls and Muskego
  • Elm Grove and Sussex
  • Hartland, Delafield and Oconomowoc


From the same Waukesha office we cover
ten southeastern Wisconsin counties: Waukesha, Milwaukee, Racine, Ozaukee, Walworth, Jefferson, Dane, Dodge, Columbia and Rock. Facility managers running buildings in more than one county get one service company and one number for the whole portfolio.

Call a Technician About Your Waukesha Building

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Call (414) 899-4641 and describe what the equipment is doing. Office hours are Monday through Friday, 8am to 5pm, and emergency calls outside those hours reach a technician rather than an answering service. If a written scope is what you need first, send the details through the quote form or text the same number.