Risk of failure or sudden product renewal
When there is a big difference between outside temperature and internal chamber temperature, or when you open the freezer’s door frequently, the freezer’s compressor will endure a large amount of stress, and may cause old models to break.
Currently, if you are using freezers older than 2012 (9 years ago), you may find that fixing your freezer if it is broken would be a challenge, as some of the components are no longer in production.
In order to evade such risks, a planned renewal of your equipment should be considered.
Old freezers can be pricey for your electricity bills
One research findings state that half of the lab’s electricity comes from equipment using the power plugs inside the lab. Of which ULT freezers can easily be suspected as the main culprit, since they are constantly on 365 days a year.
However, latest models of ULT freezers are equipped with enhanced invertor control technology and refined thermal insulation, and as a result are much more energy saving compared to models launched 5years ago.
Refrigerants of old freezers may harm your lab and the earth
ULT freezers started to adopt HC (hydrocarbon) refrigerants much later than household electronics such as refrigerators and air conditioners. Not many are aware that ULT freezers which still use old refrigerants that contribute to global warming require a compulsory once-a-year checkup.
Of course greenhouse gas emission is a global problem, but wouldn’t you prefer to concentrate on your work with no disturbance by equipment maintenances?