List of Energy Efficient Ultra Low Temperature Freezers (2017)

List of Energy Efficient ULT Freezers
Freezer
Energy Usage (kWh/day)
Capacity (ft3)
Link
New Brunswick Scientific U700
15.2
25
Thermo Scientific TSx
9.78
28.8
Stirling Utracold SU780XLE​7.89​27.5StirlingSU780XLE.pdf
Stirling Utracold SU780
8.58
27.5
Panasonic MDF-U76VC
16.4
25.4
Thermo Scientific UxF600
17.0
28.8
Thermo Scientific 88500
17.9
24.1
Notes:

1. Any freezer with daily energy usage equal to or less than those listed above is considered energy efficient.

2. The ORS Division of Scientific Equipment and Instrumentation Services can provide recommendations regarding energy efficient ULT freezers and other scientific equipment. https://www.ors.od.nih.gov/sr/dseis/Pages/default.aspx

 




Appendix 1: ULT Freezer Maintenance Checklist

1.     Check external components of the unit:

    1. Check temperature settings and actual temperature reading on display. Note discrepancies.
    2. Clean condenser area and condenser coil, either by brushing, vacuuming, or chemically cleaning as needed.
    3. Clean or replace filter.
    4. Check power cord and receptacles. Note deficiencies.
    5. Inspect electrical wiring, components and connections for signs of wear or overheating. Note deficiencies.
    6. Check operation of components. Note deficiencies.
    7. Investigate whether seal functions properly. Note deficiencies.

2.     If authorization to open laboratory refrigeration unit is provided during scheduled maintenance, then perform the following:

    1. Inspect hardware and gaskets. Note deficiencies.
    2. Remove ice from gaskets and clean floor after removing ice.
    3. Note the need for users to defrost freezers if ice buildup is evident.
    4. Inspect evaporator coils for damage, obstructions, and cleanliness. Note deficiencies.
    5. Inspect fan grills and evaporator pan for cleanliness. Note deficiencies.
    6. Inspect lighting. Note deficiencies.

3.     If refrigeration cabinet is empty, then perform the following:

    1. Pull and clean evaporator fan shroud and clean fan grills and evaporator pan.
    2. Clean evaporator coil.
    3. Investigate why freezer is empty and tag for follow up.