At Efficient Heating & Cooling, we don't just provide residential and commercial heating and air conditioning services; we make people's lives easier. From furnace & air conditioning replacement & repair in Wauconda, IL, we provide services that keep the air you breathe clean and keep your home or business at the perfect temperature. Our technicians are like EMTs for your HVAC, offering a full range of heating, cooling, and other services 24 hours a day, seven days a week. Give us a call today . Our knowledgeable and friendly staff is standing by waiting to hear from you.