The Haier DW-86L959BPT is the 959 L (33.9 cu ft) upright -86 °C ultra-low freezer at the top of Haier Biomedical's air-cooled frequency-conversion (variable-speed) family — the largest single-cabinet capacity on the platform. Two variable-speed compressors modulate refrigeration output to the actual heat load for tight temperature control and reduced energy draw, while a 7-inch LCD touchscreen, 100% hydrocarbon refrigerant, and full alarm suite make it a high-density biorepository workhorse. At 33.9 cu ft it holds up to 700 standard 2-inch boxes, consolidating the footprint of two smaller freezers into one.
Key Specifications
| Spec | Value |
| Model (focus) | Haier DW-86L959BPT |
| Cabinet type | Upright |
| Temperature range | -40 °C to -86 °C |
| Refrigeration | Frequency-conversion (variable-speed), dual compressor, HC refrigerant |
| Capacity | 959 L / 33.9 cu ft (700 × 2-in boxes) |
| Controller / display | Microprocessor, LCD touchscreen |
| Sound level | 47 dB(A) |
| Inner doors | 4 |
| Shelves | 3 stainless-steel adjustable (largest 1002 × 650 mm, 126 kg max load) |
| Power supply | 100–230 V, 50/60 Hz |
| Max power | 1750 W |
| Interior dims (W×D×H) | 1016 × 716 × 1310 mm |
| Exterior dims (W×D×H) | 1296 × 998 × 1980 mm |
| Net/gross weight | 450 / 485 kg |
| Certification | UL, ENERGY STAR |
| List price | $22,400.00 (MSRP) — LLS price $19,040.00 |
Application Profile
The DW-86L959BPT suits high-throughput cores and biobanks that need maximum -80 °C storage per floor tile. Consolidating inventory into a single 33.9 cu ft cabinet — up to 700 2-inch boxes — reduces the number of compressors, alarm points, and service contracts a facility must manage versus running multiple smaller units. The frequency-conversion drive keeps that large cabinet efficient: compressor speed tracks the heat load rather than cycling, which both stabilizes temperature and lowers the energy bill that dominates a ULT freezer's lifetime cost. (See cold-storage.)
Four sealed inner doors segment the cabinet so a single retrieval exposes only part of the inventory, and the standard hydrocarbon refrigerant carries near-zero global-warming potential. The alarm suite — high/low temperature, power failure, hot condenser, door ajar, sensor error, low battery, high-ambient — supports audible, remote, and USB monitoring.
Frequently Asked Questions
What is the storage capacity of the Haier DW-86L959BPT? 959 L / 33.9 cu ft — up to 700 standard 2-inch cryo boxes, the largest cabinet in Haier's air-cooled frequency-conversion family.
What temperature range does it reach? -40 °C to -86 °C, controlled by a variable-speed dual-compressor refrigeration system.
Why choose the frequency-conversion model over a fixed-speed freezer? The compressors modulate to the real load instead of switching fully on/off, giving steadier temperature and lower energy consumption over years of operation. It is UL and ENERGY STAR certified.
How much can each shelf hold? The largest shelf measures 1002 × 650 mm and is rated to 126 kg; three adjustable stainless-steel shelves ship standard behind four inner doors.
What power does it require? A universal 100–230 V, 50/60 Hz input, drawing up to 1750 W. Confirm the circuit at quotation.
Ordering & Configuration
quote-based. The DW-86L959BPT is a capital ultra-low freezer sold through a quote. At quote we confirm the 100–230 V service and receptacle, floor loading and clearance for the 1296 × 998 × 1980 mm cabinet, ambient conditions, backup/monitoring accessories (CO₂/LN₂ backup and chart recorder optional), rack layout, and installation. Warranty terms are confirmed with the quote, and lead time is provided at quotation. Request a quote to configure the DW-86L959BPT for high-density storage.
Sizing within the frequency-conversion family: the DW-86L959BPT (33.9 cu ft) is the capacity flagship. Step down to the DW-86L730BPT (25.7 cu ft) when floor space or budget favors a smaller cabinet, or specify the TwinCool DW-86L728BPST when dual-system redundancy outweighs raw capacity.
