Ernster Heating and A/C

Ernster Heating and A/C operates as a father-son owned HVAC contractor in Thiensville, Wisconsin, serving the North Shore area. The business holds a 4.9-star rating compiled from 33 customer reviews, reflecting consistent service quality across heating, cooling, and air purification solutions. Technicians maintain standard business hours Monday through Friday from 6 AM to 6 PM, with weekend availability by appointment for urgent situations. The company specializes in residential furnace and air conditioning installation, boiler systems, and indoor air quality improvements.

The contractor distinguishes itself through manufacturer partnerships enabling access to current HVAC equipment and energy-efficient technology. Website content highlights technician expertise with state-of-the-art tools and up-to-date installation methods, positioning the team for both new construction installations and replacement projects. The business emphasizes energy efficiency consultations, helping homeowners select equipment that aligns with Wisconsin climate demands and utility rebate opportunities. This approach combines equipment selection with installation precision.

Customer reviews document specific service scenarios including same-day emergency response during furnace failures, comprehensive installation projects involving multiple system components, and honest diagnostic assessments. Reviewers identify technicians by name, noting professional conduct and attention to installation details. One reviewer described a complete furnace and air conditioning installation performed by a two-person team who planned future equipment additions and executed precise pipe and wire connections. The documented experiences emphasize communication clarity and post-installation verification.