Merwin Oil & Propane | Local HVAC Services in Fond Du Lac, WI

Yes, duct leaks in attics or crawlspaces are a common issue in our area that waste heated air and drive up costs. Our technicians perform a thorough inspection to locate all leaks. We then professionally seal them using mastic or metal-backed tape, which is far more durable than standard duct tape. This repair immediately improves your system's efficiency, balances your home's temperature, and reduces those high energy bills.

Not necessarily. Often, inconsistent temperatures are caused by a faulty thermostat or a minor calibration issue, not a complete system failure. We'll start by diagnosing your thermostat and wiring. Many times, a repair or upgrade to a modern programmable or smart thermostat solves the problem efficiently and cost-effectively. We'll only recommend a full HVAC replacement if your system is old, inefficient, or has a major failure, and we'll provide a clear, honest assessment first.

Choosing one local provider for both simplifies your home comfort management. As your propane supplier, we understand your fuel usage patterns, which helps us anticipate your delivery needs and advise on appliance efficiency. When it comes to your furnace or boiler, our HVAC experts have in-depth knowledge of propane-fueled systems, ensuring repairs, maintenance, and installations are done correctly and safely for optimal performance and value for Fond Du Lac homeowners.