The Haier DW-86L730BPT is a 729 L (25.7 cu ft) upright -86 °C ultra-low freezer built on Haier Biomedical's intelligent frequency-conversion (variable-speed) refrigeration platform. Two variable-speed compressors modulate output to the actual heat load rather than cycling full-on/full-off, which holds cabinet temperature to a tight ±3 °C while cutting energy draw, the reason this class of freezer is chosen for long-term biorepository storage. A 7-inch LCD touchscreen controller, 100% hydrocarbon (HC) refrigerant, and a 43.5 dB(A) sound level round out a freezer designed to sit in an occupied lab without dominating it.
Key Specifications
| Spec | Value |
| Model (focus) | Haier DW-86L730BPT (brochure DW-86L729BPT) |
| Cabinet type | Upright |
| Temperature range | -40 °C to -86 °C |
| Refrigeration | Frequency-conversion (variable-speed), dual compressor, HC refrigerant |
| Temperature stability | ±3 °C |
| Capacity | 729 L / 25.7 cu ft (500 × 2-in boxes) |
| Controller / display | Microprocessor, LCD touchscreen |
| Sound level | 43.5 dB(A) |
| Inner doors | 4 |
| Shelves | 3 stainless-steel adjustable |
| Power supply | 100–230 V, 50/60 Hz |
| Max power | 1100 W |
| Interior dims (W×D×H) | 766 × 716 × 1310 mm |
| Exterior dims (W×D×H) | 1046 × 998 × 1980 mm |
| Net/gross weight | 350 / 385 kg |
| Certification | UL, ENERGY STAR |
| List price | $20,600.00 (MSRP): LLS price $17,510.00 |
Application Profile
The DW-86L730BPT is purpose-built for long-term cold-chain sample storage at scale: cell lines, DNA/RNA and protein libraries, clinical specimens, and reference material that must sit at -80 °C for years. The value of the frequency-conversion drive is not headline capacity but stability and running cost, because the compressors ramp to match the load, the cabinet avoids the temperature swings that stress samples during compressor cycling, and it draws materially less power than a fixed-speed HFC freezer of the same size. The 25.7 cu ft cabinet holds up to 500 standard 2-inch boxes across four independently sealed inner doors, so opening one section to retrieve a rack exposes only a quarter of the inventory to warm air. (See ult-freezer-selection.)
Hydrocarbon refrigerant gives the platform a near-zero global-warming-potential footprint, and the standard alarm suite (high/low temperature, power failure, door ajar, hot condenser, sensor error, low battery, and high-ambient) provides the layered monitoring a biorepository needs.
Frequently Asked Questions
What temperature range does the Haier DW-86L730BPT reach? It operates from -40 °C down to -86 °C, with a controlled temperature stability of ±3 °C from the frequency-conversion refrigeration system.
How many samples does it hold? The 729 L (25.7 cu ft) cabinet stores up to 500 standard 2-inch cryo boxes, organized behind four inner doors and across three adjustable stainless-steel shelves.
What makes the "frequency-conversion" model different from a standard ULT? Two variable-speed compressors modulate their output to the real-time heat load instead of switching fully on and off. That yields tighter temperature control (±3 °C) and lower energy consumption than a conventional fixed-speed freezer.
How loud is it? 43.5 dB(A), low enough for placement in an occupied laboratory.
What power does it require? It accepts a universal 100–230 V, 50/60 Hz input and draws up to 1100 W. Confirm your receptacle and circuit at quotation.
Is the refrigerant environmentally friendly? Yes. It uses a 100% hydrocarbon (HC) refrigerant with extremely low global-warming potential, and carries UL and ENERGY STAR certification.
Ordering & Configuration
quote-based. The DW-86L730BPT is a capital ultra-low freezer sold through a quote. At quote we confirm the 100–230 V service and receptacle, floor space and door clearance for the 1046 × 998 × 1980 mm cabinet, ambient conditions, backup/monitoring accessories (CO₂/LN₂ backup and chart recorder are optional), rack configuration, and installation. Warranty terms are confirmed with the quote, and lead time is provided at quotation. Request a quote to configure the DW-86L730BPT for your biorepository.
Frequency-conversion vs standard -86 °C: choose the DW-86L730BPT (variable-speed, touchscreen, ±3 °C, ENERGY STAR) when energy cost and temperature stability over years of storage matter most. If you need the same 25.7 cu ft capacity on a straightforward 115 V single-compressor platform, the DW-86L728J is the LED/fixed-speed sibling. Step up to the DW-86L959BPT for 33.9 cu ft on the same frequency-conversion platform.
