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.
