The Haier DW-86L959W is a water-cooled, variable-speed -86°C ultra-low freezer and the largest cabinet in Haier Biomedical's upright line at 959 L (33.8 cu ft) — roughly 700 standard 2-inch cryoboxes. Water cooling rejects compressor heat into a facility water loop instead of the room, which is the reason to specify this variant: in a packed freezer farm or a space with limited HVAC headroom, it removes the heat and noise burden that air-cooled units impose on the environment while frequency-conversion compressors keep energy draw and sound low.
Key Specifications
| Spec | Value |
| Temperature range | -40°C to -86°C |
| Cooling performance | -86°C |
| Capacity | 959 L / 33.8 cu ft |
| Cabinet type | Upright |
| Condenser cooling | Water-cooled (facility water loop) |
| Refrigeration | Dual variable-speed (frequency-conversion) compressors, 100% HC refrigerant |
| Controller / display | Microprocessor, LCD touchscreen |
| Inner doors | 4 |
| Shelves | 3 stainless-steel adjustable |
| Sample capacity | 700 2-inch boxes |
| Alarms | High/low temp, hot condenser, power failure, sensor error, low battery, high ambient, door ajar, high/low voltage, start-up delay |
| Interfaces | USB, remote alarm, RS232/485 (standard) |
| Backup systems | LN₂ and CO₂ backup optional |
| Certification | UL, ENERGY STAR (air-cooled 959BPT family) |
| List price | $25,800.00 |
| LLS price | $21,930.00 |
Application Profile
The defining feature of the DW-86L959W is its water-cooled condenser. Air-cooled -86°C freezers dump substantial heat into the room; concentrate several of them and the HVAC load — and the resulting fight for stable ambient temperature — becomes a real facilities problem. By rejecting condenser heat into a chilled or tap-water loop, the DW-86L959W keeps the surrounding room cooler and quieter, which is why it is favored in dense freezer farms, vivarium support spaces and buildings where adding cooling capacity is impractical.
Beneath the water-cooled condenser it is a full frequency-conversion platform: two variable-speed compressors modulate to the load for energy-efficient operation, an LCD touchscreen manages setpoints and USB data export, and four inner doors with three adjustable stainless-steel shelves organize the 959 L cabinet into 700 2-inch-box capacity. Because water cooling adds a plumbing dependency, the install requires a facility water supply and return — flow rate, pressure and connection details should be confirmed with the factory during quoting, as they are not published in the general brochure.
Frequently Asked Questions
What does "water-cooled" mean for the DW-86L959W? Its condenser rejects heat into a facility water loop rather than into the room. This reduces the heat and noise the freezer adds to its surroundings — valuable where many freezers share a space or HVAC is limited.
How much does it store? 959 L (33.8 cu ft), up to 700 standard 2-inch cryoboxes, across four inner doors and three adjustable stainless-steel shelves.
What temperature range does it hold? -40°C to -86°C, cooling to -86°C, with variable-speed frequency-conversion compressors for stable, efficient operation.
What does the site need to provide? A 208-230V/60Hz electrical supply plus a facility water supply and return for the condenser loop. Exact water flow, pressure and connection specifications are confirmed at quoting.
Can I add outage protection? Optional LN₂ and CO₂ backup systems are available to maintain temperature during a power or compressor failure.
Ordering & Configuration
The DW-86L959W is a capital purchase. Add it to a quote and a Legacy Lab Supplies specialist will confirm the water-loop requirements, electrical service, delivery access and backup options before order, and route factory warranty registration. Lead time is quoted per configuration; contact us for current availability.
Specify the DW-86L959W when you need the largest -86°C capacity and want to keep condenser heat out of the room via a facility water loop. If plumbing a water line is impractical, choose the air-cooled variable-speed DW-86L830BPT instead; for dual-circuit redundancy, compare the TwinCool DW-86L828BPST.
