There are few things more frustrating than dealing with a furnace or air conditioner that isn’t working properly. Not only will you be stuck with a home that is uncomfortably warm or cold, but many HVAC issues can cost you thousands of dollars if they aren’t repaired quickly. Before you go searching for the best HVAC maintenance Virginia has to offer, look for some of these signs that will tell you that your system is in need of repair.Higher Energy BillsIf you’ve noticed that your utility bills are higher than they have been lately even though you haven’t been turning up your heat or your AC, it means that your system is not as efficient as it could be. It might only need a bit of routine maintenance, but it is better to contact a repair professional just to be on the safe side.Uneven Temperatures Throughout Your HomeWhile you cannot expect every room in your home to be the same temperature, they should heat up and cool off at roughly the same rate when you turn on your furnace or air conditioner. If you find that there is a room that seems to be unaffected by changes in your thermostat, your ducts might need to be cleaned.Strange Sounds Coming from Your Furnace or Air ConditionerAside from a slight “whoosh” when you turn it on, a furnace or air conditioner should run mostly silent. If you hear rattling or banging sounds coming from your HVAC unit, there is most likely a problem that needs to be fixed.Your Allergies Have Gotten WorseOne of the functions of an HVAC system is to filter out potential allergens that could make you or your family sick. If you or someone in your household has allergies that seem to be getting worse, your HVAC system isn’t doing this job correctly. It could be that you only need to change the filter in your system, but there might also be a bigger problem that needs to be addressed as well. As with all potential HVAC issues, you’re better off contacting a repair professional to take a look at your system just to be sure that everything is working properly.