Illinois experiences frigid, snowy winters, so preparing your commercial building for the heating season is extremely important. With proper preparation, your system will operate efficiently, and your business will remain safe and comfortable all winter. The experienced team at On the Mark Heating & Air offers helpful insights on how to prepare your commercial HVAC … [Read More]

Living in Illinois means living with wind, snow, and below-freezing temperatures, with extreme fluctuations that can be hard on any home heating system. Many homeowners in our area have asked themselves what the difference is between heat pumps vs. furnaces, and which is best in the Prairie State. The HVAC experts at On the Mark … [Read More]

Unless you have a background in HVAC systems, understanding heating and cooling can be difficult. After all, it’s a complex system that can take years of training to completely understand! When you work with us at On the Mark Heating & Air, we do more than just fix your HVAC system. We take the time … [Read More]

When homeowners start thinking about replacing their HVAC system, the conversation often centers around the leading brands in the industry and which logo to trust the most. A good HVAC brand is important in terms of quality, but it’s rarely the reason a home feels comfortable or uncomfortable. In a recent Home Answers Radio conversation … [Read More]

When our own Mark Portuese from On the Mark Heating & Air sat down with Home Answers Radio, the conversation immediately shifted from sales talk into the no-nonsense, practical advice that homeowners need. Host Roger Piper kicked off the interview with the simple question about what people should ask before hiring an HVAC company. Mark … [Read More]

Do you have a heat pump issues in Illinois but aren’t sure if it’s working properly? As the winter chill sets in, you need your heat pump to work as efficiently and reliably as possible. But like any heating system, a heat pump takes some troubleshooting and maintenance to keep it running smoothly. Don’t worry, … [Read More]