If you are concerned that your HVAC unit isn’t working as well as it once did, then it’s important to get to the root of the issue. If you don’t, then you may find that the issue gets worse over time and that your system becomes less efficient as well. If you want to stop this from being the case, then take a look below to see what top signs you should be looking for.   Your Heating Costs are Increasing   Have you noticed that your heating and cooling bills are increasing? If so, then it may be that your air conditioning unit isn’t working as it once did.…