Fondy Heating & Air Conditioning | Professional HVAC Services in Fond Du Lac, WI

A frozen heat pump is a common issue in our cold Wisconsin winters, often due to refrigerant issues or airflow problems. First, switch the system to 'emergency heat' mode on your thermostat to prevent further damage. Then, contact us for 24/7 emergency service. Our technicians, with over 50 years of combined local experience, will diagnose the root cause—whether it's a low refrigerant charge, a faulty defrost control, or a clogged filter—and perform a lasting repair to restore your home's warmth efficiently.

We recommend professional maintenance for your heating and cooling systems at least once a year—ideally in the spring for your AC and in the fall for your furnace. This seasonal check-up by our experienced team helps catch minor issues, like a clogged condensate drain, before they become major problems. Regular maintenance improves efficiency, extends the lifespan of your equipment, and ensures reliable performance throughout Fond du Lac's variable seasons, ultimately saving you money on energy and repair costs.

Yes, we specialize in the installation and replacement of ductless mini-split systems, a great solution for many homes in our area. These systems are efficient and ideal for room additions, older homes without existing ductwork, or for zoned heating and cooling. Our owner, David Larson, started in the HVAC and sheet metal trade over two decades ago, and our team has the expertise to assess your home's specific needs and install a system that provides optimal comfort and energy savings for years to come.