Frequently Asked Questions (FAQ) Do you accept credit cards? Yes, we accept all major credit cards. Do you offer rebates? Yes, we work directly with Focus on Energy and the Equipment Manufacturer to ensure you receive all applicable rebates. Do you schedule weekend appointments? Of course! We offer Saturday appointments for your convenience. What is your service area? We service Madison and all surrounding communities. Where can I purchase a new Furnace or Air Conditioner? Leading Edge Heating and Air Conditioning provides both repair and replacement services on furnaces, air conditioners, boilers, air filtration systems and thermostats. Do you service web based thermostats? Yes, we are a NEST partner and also offer Ecobee web based thermostats.