Markgraf's Heating & Air Conditioning

Markgraf's Heating & Air Conditioning serves Lake Zurich as an air conditioning contractor with a rating of 3.7 stars drawn from nine customer reviews. The business operates Monday through Friday from 8 AM to 4:30 PM, with Saturday hours extending to 5:30 PM and Sunday marked as closed. A long-term customer describes the company as family-owned, noting over two decades of continuous service to the local community. The phone number (847) 438-0032 connects homeowners directly to the office for scheduling routine maintenance, emergency repairs, and new equipment installations.

The company handles a range of residential heating and cooling needs, including furnace and air conditioner replacements, humidifier installations, and whole-home air purifier systems. Reviewers describe receiving same-day service calls during extreme weather events, with technicians arriving as late as 8:30 PM on weeknights and completing installations by Saturday morning. One customer recounts a winter emergency where the team stayed until 8 PM to resolve a heating failure, demonstrating willingness to work beyond standard hours for urgent situations.

Customers repeatedly mention the dedication of specific technicians. Edgis received praise for thorough explanations during routine service, while another technician was recognized for arriving after a 12-hour shift to assess a failing AC unit before a family's newborn arrived home from the NICU. Another reviewer described an emergency Sunday call during bitter February cold that received prompt, professional attention. However, two negative reviews cite confusion during boiler wire location and concerns about technician training, indicating variability in service experiences.