The Haier DW-86L829W is an 829 L (29.2 cu ft) upright -86 °C ultra-low freezer with water-cooled condensing on a frequency-conversion (variable-speed) refrigeration platform. Rather than rejecting compressor heat into the room, roughly 90% of that heat is carried away by facility cooling water — so the freezer places little thermal load on the lab's air conditioning. That makes the DW-86L829W the right choice for crowded freezer farms and equipment rooms where multiple air-cooled ULTs would overwhelm HVAC. A 7-inch LCD touchscreen, hydrocarbon refrigerant, and a 43.5 dB(A) sound level complete a freezer built for dense installations.
Key Specifications
| Spec | Value |
| Model (focus) | Haier DW-86L829W (brochure DW-86L828W, water-cooled) |
| Cabinet type | Upright |
| Condenser cooling | Water-cooled (~90% compressor heat removed by cooling water) |
| Temperature range | -40 °C to -86 °C |
| Refrigeration | Frequency-conversion (variable-speed), HC refrigerant |
| Capacity | 829 L / 29.2 cu ft |
| Controller / display | Microprocessor, LCD touchscreen |
| Sound level | 43.5 dB(A) |
| Inner doors / shelves | 4 inner doors / 3 adjustable shelves |
| Power supply | 208–230 V, 50/60 Hz (6 A) |
| Interior dims (W×D×H) | 870 × 716 × 1310 mm |
| Exterior dims (W×D×H) | 1145 × 998 × 1980 mm |
| Net/gross weight | 380 / 415 kg |
| Protection | Pressure-protection system on loss of water flow |
| List price | $23,800.00 (MSRP) — LLS price $20,230.00 |
Application Profile
The DW-86L829W is specified where heat rejection, not floor space, is the binding constraint. A room packed with air-cooled -86 °C freezers dumps kilowatts of compressor heat into the ambient, forcing the HVAC system to fight the very equipment it must keep cool — and raising the risk of high-ambient alarms and shortened compressor life. Water cooling removes about 90% of that heat through a plumbed supply, keeping the room comfortable and reducing air-conditioning power. The trade-off is a facility requirement: the DW-86L829W needs a cooling-water connection with adequate flow, and includes a pressure-protection system that responds to loss of water flow. (See ult-freezer-selection.)
At 29.2 cu ft behind four inner doors, it offers large-format storage with the frequency-conversion drive's tight temperature control and reduced energy draw. The alarm suite covers high/low temperature, power failure, hot condenser, door ajar, sensor error, low battery, and high-ambient conditions.
Frequently Asked Questions
What makes the Haier DW-86L829W different from an air-cooled ULT? It is water-cooled: roughly 90% of the compressor heat is removed by facility cooling water instead of being exhausted into the room, so it adds little load to the lab's air conditioning. It requires a plumbed cooling-water supply.
What temperature range and capacity does it offer? -40 °C to -86 °C, with 829 L / 29.2 cu ft of storage behind four inner doors.
What happens if the cooling water fails? A built-in pressure-protection system responds to loss of water flow to protect the refrigeration circuit. Cooling-water flow and connection are confirmed at quotation.
What voltage does it need? 208–230 V, 50/60 Hz, drawing about 6 A on the refrigeration circuit.
When should I choose water-cooled over air-cooled? When many ULT freezers share one room and their combined heat rejection strains the HVAC — water cooling keeps the space comfortable and stabilizes ambient conditions for all the freezers.
Ordering & Configuration
quote-based. The DW-86L829W is a capital water-cooled ultra-low freezer sold through a quote. At quote we confirm the 208–230 V service, the cooling-water supply, flow rate, and return plumbing (mandatory for this model), floor space for the 1145 × 998 × 1980 mm cabinet, ambient conditions, backup/monitoring accessories, and installation. Warranty terms are confirmed with the quote, and lead time is provided at quotation. Request a quote to plan the DW-86L829W's water and electrical connections.
Air-cooled vs water-cooled: choose the DW-86L829W when a dense freezer room's heat rejection overwhelms HVAC and a cooling-water loop is available. If no water connection exists, the air-cooled frequency-conversion DW-86L730BPT (25.7 cu ft) or DW-86L959BPT (33.9 cu ft) are the alternatives. A larger water-cooled sibling, the DW-86L959W (959 L), is also offered.
