The Haier DW-86W420JA is a −86°C chest-style ultra-low freezer that trades vertical height for a stable, top-access cold well — a form factor prized where cold-air retention during access and low-profile placement matter more than floor efficiency. Its 420 L (14.8 cu ft) chest reaches −86°C on a 220V circuit, organizes up to 270 two-inch boxes across 27 racks, and is UL certified.
Key Specifications
| Model | DW-86W420JA |
| Cabinet type | Chest |
| Cooling performance | −86°C |
| Temperature range | −40°C to −86°C |
| Refrigeration | High-efficiency HC compressor |
| Capacity | 420 L / 14.8 cu ft |
| Rack capacity | 27 racks / 270 two-inch boxes |
| Inner doors | 3 |
| Controller / display | Microprocessor, LED |
| Sound level | 50 dB(A) |
| Power supply | 208–230 V / 60 Hz (220V nominal) |
| Max power | 1600 W |
| Backup | CO₂ / LN₂ backup optional |
| Certification | UL |
Application Profile
A chest ULT freezer keeps its cold air where it belongs. Because cold air is denser than warm air, a top-opening well spills far less of it when the lid is raised than an upright loses through a swung door — so a chest recovers faster after access and rides through door-open events more gently. The DW-86W420JA leverages that physics for labs that open the freezer often, run in rooms with limited overhead clearance, or simply prefer chest ergonomics for boxed-sample work.
The high-efficiency hydrocarbon compressor reaches a genuine −86°C (−40°C to −86°C range) in a 420 L cabinet, with three insulated inner lids sectioning the well so only one zone is exposed at a time. A rear 25 mm porthole accepts an independent probe, and casters with leveling feet ease placement.
Design Architecture
The microprocessor controller with LED display drives the full alarm suite — high/low temperature, hot condenser, power failure, sensor error, low battery, high ambient temperature, door ajar, and start-up delay — with a USB interface and remote alarm contact for facility monitoring. Twenty-seven racks organize up to 270 two-inch boxes in the chest well, and optional CO₂ or LN₂ backup adds power-loss protection.
Frequently Asked Questions
Why choose a chest ULT over an upright? A top-opening chest loses less cold air during access and recovers temperature faster, and it fits under low ceilings. Uprights use less floor area and are easier on the back for high-frequency retrieval — it is an ergonomics-and-siting trade-off.
What temperature does it reach? −86°C cooling performance, over a −40°C to −86°C range.
How many boxes fit? 420 L holds up to 270 two-inch boxes across 27 racks.
What power does it require? 208–230 V / 60 Hz (220V nominal), up to 1600 W, on a UL-certified system.
Are backup systems available? Yes — optional CO₂ and LN₂ backup.
Ordering & Configuration
The DW-86W420JA is a capital freezer: request a quote for pricing, freight, and siting. It ships palletized. Backed by Haier Biomedical's manufacturer warranty — confirm current terms and lead time with your quote.
Choose the DW-86W420JA when you want −86°C storage that tolerates frequent access and low-ceiling rooms, and chest ergonomics suit your boxed workflow. Pick an upright DW-86L instead when floor space is scarce or you retrieve from deep stacks many times a day.
