Did you know that initial purchase price is a relatively small part of the actual cost to own an ultra-low temperature freezer? That’s because the real cost of a ULT is the sum of the purchase price, plus costs for energy, HVAC, floor space and the usual compressor replacement. With the typical cascade-compressor freezer consuming the equivalent electric power of an average U.S. household, all that energy is rejected as heat in your building, which adds a substantial cost for your HVAC system.
What is your compressor-based ultra-low freezer really costing your organization?
Using manufacturers’ published energy use data at 16c/kWh electric costs, with typical floor space and compressor replacement cost estimates from independent sources, the table on the right estimates cost of ownership percentages per cubic foot of storage per year for a typical compressor-based ULT.
Reduce Total Cost of Ownership by Thinking Strategically
Considering that initial purchase price accounts for less than a third of ULT storage cost, you can see how energy consumption and operating costs have a surprising impact on lowering overall life cycle cost. Of course, this is counter to the traditional way of thinking about buying freezers. More research organizations are now looking at that their ULT purchases strategically and replacing traditional models with Stirling Ultracold units. Using less than half the energy, the SU780UE can typically lower total cost of ownership by about 40%—even with a higher initial purchase price.
In fact, even a free cascade-compressor ULT freezer typically costs more to own than the SU780UE!