Cooling
How to Identify Hard and Soft Water
Hard water causing dry skin, cloudy dishes, or pipe damage? Learn the difference between hard and soft water and how a water softener can help.
June 12, 2026
With 24/7 HVAC technician services available in Madison, WI, Harker Heating and Cooling is ready to install, maintain and repair your home’s heating and cooling systems.
Harker Heating & Cooling Inc. has provided high-quality heating and cooling services to residents of Dane County since 1949. Our dedicated staff of HVAC specialists is available to handle any emergency, installation or repair 24/7, 365 days a year. Count on Harker to get the job done right.
We believe everybody should feel comfortable in their home. In Wisconsin where the weather can swing from one extreme to another, you want to be able to rely on your HVAC systems to function at optimal levels. When it comes to repairing or replacing your furnace, air conditioner, fireplace, or water heater, you can rest assured that Harker’s team of HVAC contractors will provide an honest assessment of the problem, and provide you with the most affordable solution.
That’s why we make it fast and easy to request an in-home estimate. Once you request a service, our team will arrive ready to perform repairs or replacements on-time and on-schedule. Don’t waste your time with dodgy HVAC contractors. Trust our reliable, efficient HVAC experts to get the job done.
Hard water causing dry skin, cloudy dishes, or pipe damage? Learn the difference between hard and soft water and how a water softener can help.
Not sure if you need a humidifier, dehumidifier, or air purifier? Learn how each one works and which is right for your home’s air quality needs.
While Wisconsin is known for the cold, our summers can get hot! Without proper home preparation, summer fun can quickly turn sour. Windows are an
