Black-Haak Heating

Since 1956, we’ve helped homeowners and businesses in Greenville and throughout the Fox Valley stay comfortable through humid summers and cold, windy winters. As a family-owned team, we handle heating and cooling needs in residential neighborhoods, commercial properties, new construction, and renovations. Whether a customer needs an emergency repair, routine maintenance, or guidance on replacing a system, we bring professional service and practical advice to every job.

We service and repair all makes and models, and we install heating and air-conditioning systems for existing properties and buildings under construction. Our capabilities also include ductless systems, geothermal heating and cooling, indoor air quality solutions, electrical work, and plumbing service. We can take care of electrical projects ranging from replacing a light fixture or adding an outlet to larger remodeling and new-construction work. For cleaner indoor air, we offer purification systems designed to reduce pollen, dust, and microorganisms in the air.

Our technicians complete extensive training and certifications, and we continue learning as equipment and industry practices advance. We also operate an apprenticeship program that helps team members build lasting careers. Preventive maintenance is an important part of our approach: an AC tune-up may improve efficiency and includes work such as replacing dirty filters, lubricating moving parts, and checking safety systems. We recommend furnace maintenance at least once a year to identify developing issues before winter, help reduce energy use, and support a longer service life. From a small repair to a complete comfort system for a new building, we’re ready to help our customers make informed choices for their homes and workplaces.