Commercial HVAC Service, Commercial HVAC Repair & Commercial HVAC System InstallationDelafield, WI, Brookfield, WI, Pewaukee, WI, Watertown, WI, Waukesha, WI & Oconomowoc, WI

We are a leading provider of commercial HVAC products and services in the Greater Lake Country area—delivering everything from heating and cooling installation to maintenance and repair. Whether you’re looking for help determining the type of system that will best serve your building’s needs, or you need your equipment inspected at regular intervals, you’ve come to the right place. We’re here to ensure the efficient operation of your heating and cooling equipment while protecting your productivity and investment.

The Commercial Heating and Cooling Experts in the Greater Lake Country Area

We’ve provided HVAC service to some of the community’s most recognizable, high-profile businesses and commercial facilities, including Brennan’s Market, Rogers Memorial Hospital, and St. Jerome Church. These successful, well-coordinated projects all resulted from the relationship we had upfront with the design team. We understand the tough demands of construction projects. And we play an active role during both the preconstruction and construction phases—while keeping specifications, and your needs and budget in mind.

Our skilled technicians are dedicated to serving all your HVAC needs. They have a combined 140 plus years of experience doing a variety of commercial work. We pride ourselves on superior customer service. Let us add you to our growing list of satisfied commercial customers by calling to arrange an on-site estimate today.


Commercial Projects We’ve Worked On:

First Bank Financing Center – Oconomowoc


First Bank Financial Center is a full-service, independent community bank that has served Southeastern Wisconsin for more than 150 years. Since being founded in 1859, the bank has expanded to include 12 full service locations. Pat’s Heating has partnered with First Bank as they’ve grown over the years providing new construction, remodeling, and maintenance services to all of its branch locations. The bank is committed to community banking values and focuses its attention on the needs of local families and small businesses while providing exceptional service and sound financial advice.

General Contractor:

  • VJS Construction Services
Equipment List:

  • Three high-efficiency boilers
  • Three water source heat pumps
  • 54 VRF heat pump units
  • One energy recovery ventilator
  • One cooling tower

Brennan’s Market – Oconomowoc

Opened in August of 2009, Brennan’s Marketplace is an open concept shopping experience brimming with the best produce. The Brennan family personally visits and inspects every farm, orchard, vineyard, microbrewery and cheese factory that they do business with. Pat’s Heating provided the HVAC work when the new location was built and we continue to provide the annual maintenance on the market’s HVAC systems.

General Contractor:

  • MSI General
Equipment List:

  • Four rooftop units
  • Four hanging unit heaters
  • One exhaust fan

St. Jerome Catholic Church – Oconomowoc

Partnered with VJS Constructions Services, Pat’s Heating was honored to work on this beautiful project. The church incorporated the comfort of an in-floor radiant heating system along with multiple rooftop units. The worship area can seat up to 1,200 parishioners and is often used for other events such as musical concerts.

General Contractor:

  • VJS Construction Services
Equipment List:

  • Two high-efficiency boilers
  • Two steam humidifiers
  • Four roof top units
  • One split system
  • Four furnace/AC systems
  • Two energy recovery ventilators
  • Multiple zone systems
  • In-floor radiant system

Other Commercial Projects We’ve Worked On Include:

  • First Bank – Milwaukee/Brookfield/Glendale/Grafton locations
  • Roger’s Hospital – Silver Lake Building, Cedar Ridge/Children & Adolescence Center/Therapeutic Gardens, Silver Lake Office/Eating Disorder Center
  • CQ Nails
  • Rosati’s Pizza of Oconomowoc
  • ATI Physical Therapy – Oconomowoc
  • Delafield Woods Apartments
  • Coldwell Banker
  • Westbury Bank
  • Three Pillars/Masonic Home
  • Ixonia Bank

Commercial HVAC System InstallationCommercial HVAC RepairCommercial HVAC Service