Mark's Heating & Cooling | Local HVAC Repair in Oconomowoc, WI

Our maintenance service is designed to enhance system efficiency and prevent unexpected breakdowns, especially important with our variable Wisconsin seasons. For your air conditioner, we check refrigerant levels, clean coils, and inspect electrical components. For your furnace or boiler, we perform combustion analysis, check heat exchangers for safety, and ensure all components are functioning properly. This proactive care helps extend the life of your Bryant system and maintains its performance.

Carbon monoxide safety is a priority for us, given its risk with aging furnaces. During every maintenance visit or repair, we conduct a thorough inspection of your furnace's heat exchanger—the most common source of leaks—and perform combustion analysis to ensure safe operation. We also install and service CO alarms as part of our safety offerings. For older systems, we can advise on whether repair or replacement is the safest option for your home and family.

Yes, we handle both. For new home construction or major remodels in the Lake Country area, we provide complete HVAC system design and installation, ensuring proper sizing and efficiency from the start. For replacements, we carefully assess your existing system and home's needs to recommend a suitable Bryant furnace, air conditioner, or heat pump. Our 40 years of local experience means we understand the specific requirements of homes in our climate for both scenarios.