The presence of mold in an HVAC system is a common complaint. Mold can grow…
When summer arrives, your HVAC unit becomes indispensable and when it doesn’t work properly, life can become very uncomfortable. One of the first signs your HVAC unit is malfunctioning is that hot air is coming out of your air vents. The following covers the most likely causes:
- If you have a combined furnace and HVAC unit, the fan used to circulate air is the same for both the furnace and air conditioning unit. If hot air is being circulated when the furnace is off, then there is every possibility the condensing coil on your HVAC unit has stopped functioning. The condensing coil is used to cool air before the fan then circulates it throughout your home. However, it is not all bad news. It may have stopped working because a trip switch has been activated or a fuse blown – many HVAC units have their own fuses. Try replacing them or checking the trip switch before you call out an engineer.
- Has the level of refrigerant dropped? Older HVAC units are prone to developing leaks, so this could also be a cause of the condenser coil not functioning properly. Without a refrigerant, the HVAC unit simply cannot cool down air.
- Is the condenser in your HVAC unit covered in ice? This is not an uncommon problem and unfortunately it isn’t a sign that your unit is working super-efficiently, it is the opposite. The result means that while the unit may be producing ice, none of the cool surrounding air is getting circulated throughout your home. This can be as a result of a mechanical fault with the condenser, or a blockage in the air-flow ducting or HVAC unit outlet.
Make sure you carry out preliminary checks for an easily fixed problem, and if you can’t see what’s wrong, then don’t hesitate to give us a call here at (512) 836-1414. We’ll be out as soon as we can and will be able to tell you exactly where the problem lies, and what can be done to fix it.