Hi Permafrost,

Just a couple of other checks to consider from an energy efficiency perspective:

Blower door test- consider this test to ensure the building envelope is completely sealed. It is relatively low cost and is good for identifying leakage. Goggle online to find out the procedure...

Thermal imaging- this is another test to check for poor performance of the thermal envelope (walls,ceiling etc). It is also good for testing panel joins. Many of the large cold storage companies in New Zealand have this as an annual check. Something to consider.

Heat recovery- Most cold storage facilities have too much heat available. Check with your neighbouring buildings...do they have a need for high grade heat for processess? There is excellent high grade heat recovery available from Ammonia systems. You might be able to sell this heat to a neighbouring building for a win/win situation.


Good luck....