Furnace Troubleshooting: What to Do Before Calling for Furnace Repair10/07/2015 You can’t count on the weather in Phoenix, but one thing the team at Dial One Mears Air Conditioning & Heating Inc wants you to be able to depend on is your heating and cooling system. Having a comfortable home isn’t a seasonal thing, it’s something you need all year. When your furnace is having problems you may think that means a furnace repair can be needed soon. That may not be the case. If your furnace hasn’t been its usual, reliable self lately, there are a couple of things a homeowner can do before calling in the experts at Dial One Mears Air Conditioning & Heating Inc. Check the Thermostat We have had calls where we simply had to switch a thermostat from “cool” to “heat”. While setting the thermostat for the season, it’s easy for a homeowner to forget to flip the switch, telling your heating and cooling system what you want it to do. Something else to look at while you’re at the thermostat is the battery. Most digital thermostats give a low battery warning, but if it’s been a while since you’ve changed batteries it may be time for a change. It’s another easy fix that could save you a repair call. Check the Filter A dirty air filter can create all sorts of problems. Not only will a dirty filter inhibit your system’s efficiency and block air flow, it could also cause an abrupt breakdown. Changing the filter in your heating and cooling system is simple and it can play a huge role in keeping your system functioning at its best. Check the Switches The first switch you’ll want to check is the breaker for your furnace. Sometimes a problem can be as easy to fix as a tripped breaker or blown fuse. Check the Vents A typical misconception is that a homeowner should seal the vents in unused rooms. This could actually lead to a furnace repair down the line. Closed vents cause higher pressure inside your duct system and cause your system to work harder than it needs to. If you’ve gone through our troubleshooting tips and you’re still having issues the team at Dial One Mears Air Conditioning & Heating Inc are always there for you to make sure all of your home comfort needs are met. Give us a call at or set up an appointment with us online using our online scheduler.