At Beehive, we regularly receive frost damaged coils sent to us during the winter months - most of which are beyond repair.
Frost damage is normally caused by water or condensate held within an inactive coil (in temperatures of 0°C or less) which freezes and expands, normally resulting in irreparable damage to the coil. This is the most common cause for frost damage and normally takes place first in the tubes/bends outside of the fin area or in some more severe cases, within the finned area itself.
Frost damage can normally be identified by bulging or cracking of the bends.
Occasionally, frost damaged coils may be repairable but although this may fix the immediate problem of a leak - the issue is much more likely to repeat itself the next time there are drops in temperature if the root cause is not resolved.
Some of the more frequent causes of frost damage are listed below:
If the coil is not in use, we would suggest draining all fluid from it if freezing temperatures are present. However, even after draining, enough water may still remain in the coil/system to cause frost damage - so following one or both of the proactive steps below is suggested to help try and avoid this common issue:
If you do have a suspected frost damaged or leaking coil in your system, then remove and send to Beehive for repair cost (if possible) or a quotation for a replacement unit which we can supply on a fast lead time to assist - see offer below.
Originally posted: 30/10/14