What Does The HVAC Technician Do During An Annual Maintenance Call?

Posted on: 3 December 2014


If you're a homeowner, you've likely heard that you need to have your furnace serviced once a year by a technician from a company like Kohl Heating & Air Conditioning to extend the life of your system and to prevent costly repairs down the road. However, do you have any idea what the furnace technician actually does during this visit?

What's involved in an annual furnace check-up

1. Changing the filters. One part of any annual service call is making sure that all of the furnace filters are clean. A heating system with dirty filters has to work harder to push air through the dust and dirt in the filter, using more energy and shortening the life of the system. In addition to changing the smaller filters annually, homeowners should change the main filter around once a month during cold weather season.

2. Making sure that the system is working properly. One of the prime reasons to have your furnace serviced each year is to make sure that it won't break down on a cold winter's night. To this end, the HVAC technician will check to make sure that your system is turning on and off properly, is producing heated air and is circulating that air throughout your living spaces as it should.

3. Checking the power source. Even the best system won't work if it's not getting the electricity, natural gas or fuel oil it needs to power the system. The technician will also make sure that all of the power connections are solid and that the system is getting the energy it needs to operate.

4. Cleaning the system. A dusty and dirty system is the reason cited for more than half of all furnace repair calls. To prevent this, the technician will thoroughly clean your system and remove any accumulation of dust, pet hair and dirt.

5. Oiling the moving parts. The technician will lubricate all of the moving parts in your heating system, so that they won't freeze and stop working when you need them.

6. Testing for carbon monoxide. Lastly, the technician will check to make sure that all of the combustion gases, including carbon monoxide, are being diverted properly away from your house via the chimney or vent.

Having your furnace serviced once a year before cold weather season begins is a good idea and will help extend the life of your system. During such a call, the HVAC tech will not only clean your system, but check to make sure it's producing heat as it should and that all of the moving parts are properly lubricated.