Every change of weather, we have to get either our heating system or our cooling system ready for the coming season. Even during the season, depending upon usage, HVAC systems, like any electro-mechanical device, needs maintenance. You can always call a HVAC professional to handle any issue. At the same time, there is no harm in understanding the basic steps that are involved in HVAC maintenance. In this infographic, we give you a check-list of items that would need to be handled in HVAC maintenance. You can also use this check list to confirm whether all that is needed is done by the HVAC professional.