Working with an HVAC system can be discouraging to beginners, but the info below should help ease the pain. If you want to learn more, this article can help you. If you're interested, keep reading.
Before making that repair phone call, make sure you know the specifics about your particular system. Know the model and brand and find it's maintenance history, if possible. Your contractor will appreciate this information.
Make sure you ask for an estimate in writing before choosing a specific HVAC vendor.