Not much is more stressful than having a broken system in winter or summer. You need to know as much as possible in order to be sure your equipment is properly repaired or your new one is installed properly. Read on and you will get the information that you need.
If problems arise with the HVAC system, check the entire house before contacting someone to come for repairs. Jot down the rooms that are hot and the ones that are cold. Figuring this out will the contractor to diagnose the issues and quickly get to work on fixing it.