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]

AC Not Cooling? Here’s Why, and What You Can Do About It It’s a hot summer day in Palatine, IL, and your air conditioner is running, but the house still feels like a sauna. If your AC isn’t cooling, you’re not alone. This is one of the most common problems homeowners face during peak heat, … [Read More]

Ductless Mini Split Air Conditioners: The Smart Solution for Efficient Home Cooling in Arlington Heights, IL If you’re searching for a better way to cool your home without the bulk and energy loss of traditional ductwork, ductless mini split systems, also known as heat pumps, may be exactly what you need. These compact, energy-efficient systems … [Read More]

Why Does My Air Conditioner Smell? 8 Common Causes & What You Can Do Noticing a strange smell coming from your air conditioner? Whether it’s musty, chemical, or something worse, an unpleasant odor from your AC isn’t just annoying—it could be a warning sign that something’s wrong with your system. In this blog, we’ll break … [Read More]