Engineered Low-Humidity
Controlled Environments
Below 1% RH or to a precise dew point as low as −65°C — held continuously under full production load. Standard HVAC cannot reach it; dedicated desiccant technology can.
A dry room — also called a low-humidity room, dew point room, or dry cleanroom — is a controlled environment where relative humidity is maintained at extremely low levels. Unlike standard HVAC conditioning, industrial dry rooms require dedicated desiccant dehumidification, vapour-sealed construction, and precision control systems that hold set points continuously under load.
In lithium battery manufacturing, moisture causes electrolyte degradation, thermal runaway risk, and reduced cell capacity. In semiconductor dry rooms, uncontrolled humidity leads to yield loss and corrosion. In pharmaceutical dry rooms, hygroscopic APIs absorb moisture and fail specification.
As a dedicated dry room manufacturer, ACH Solutions delivers complete dry room construction and validation — from engineering and in-house fabrication through to qualified handover.
Dry Room Performance Parameters
Every specification is sized to your exact process requirement — never pulled from a catalogue.
Moisture Load Analysis First.
Then We Design the Dry Room.
Every ACH dry room design begins with a complete moisture load analysis. We calculate occupancy moisture generation, process moisture loads, envelope infiltration rates, and airlock ingress — establishing the true dehumidification duty before selecting a single piece of equipment.
This prevents the most common dry room failure: an undersized system that cannot hold dew point under real production conditions.
We then specify and install the full system: rotary desiccant dehumidification with regeneration circuits, vapour-sealed modular panel construction, pressure-cascade airlock management, precision temperature control, and real-time BMS monitoring. For regulated industries, documentation is structured from day one for full qualification.
Six Core Capabilities in
Every Dry Room Project
Not observers of construction — execution owners accountable for dew point performance from analysis through validated handover.
Moisture Load Analysis
Full calculation of dehumidification duty under actual occupancy — preventing an undersized system that loses dew point under load.
Desiccant System Design
Rotary desiccant wheel with regeneration — the only practical technology for −40°C to −65°C dew points in battery and semiconductor applications.
Vapour-Sealed Construction
Every panel joint, service penetration, door frame, and airlock seal is vapour-tight. Vapour infiltration is the number-one dry room failure mode.
Airlock Entry Management
Engineered airlock sequence with pressure cascade — maintaining dew point under full occupancy and production entry frequency.
Real-Time BMS Monitoring
Continuous dew point monitoring with BMS integration and real-time alarms — full visibility of conditions under live production load.
Retrofit Within Active Facilities
Most ACH dry room projects are retrofits inside operating production facilities — delivered without disrupting live adjacent processes.
Where Dry Rooms Are
Non-Negotiable
ACH Solutions builds industrial dry rooms for every sector where moisture control is critical to product quality, safety, and regulatory compliance. If your process requires a dew point below −10°C, standard HVAC conditioning will not meet the requirement.
From Dew Point Specification
to Validated Handover
Every ACH dry room project follows a structured six-step process. Engineering is never rushed — construction never starts before the humidity control strategy is fully resolved.
- 01
Process & Dew Point Definition
Define exact dew point target, occupancy load, process moisture sources, and production schedule.
- 02
Desiccant System & Envelope Design
Desiccant sizing, regeneration circuit design, airlock sequencing, vapour barrier specification, BMS integration.
- 03
In-House Panel Fabrication
Vapour-sealed modular panels, airlock door systems, and service penetration assemblies manufactured in-house.
- 04
Site Installation & Integration
Panel installation, desiccant unit and ductwork integration — within active facilities using phasing as required.
- 05
Commissioning & Verification
Full commissioning under actual production load — dew point mapping, airlock testing, BMS checks.
- 06
Validated Handover
Full qualification documentation and complete turnover package ready for immediate use by your quality team.
Why Dry Room Engineering
Determines Performance
ACH SolutionsDry Room Specialist
General ContractorStandard HVAC
Dry Room Questions
Answered Directly
Using rotary desiccant wheel technology, ACH Solutions achieves dew points as low as −65°C. Lithium battery cell assembly typically requires −40°C to −60°C, and pharmaceutical dry rooms may require −20°C to −40°C. We size the system to your actual process load under full occupancy.
A cleanroom controls airborne particulate contamination to an ISO 14644 classification. A dry room controls humidity using desiccant dehumidification. ACH Solutions designs and builds combined environments where your process requires both.
Yes — retrofit within active production facilities is one of our most common project types, delivered without disrupting live adjacent processes.
Most dry room fit-outs deliver in 8–16 weeks. Complex new builds or combined dry room and cleanroom environments typically deliver in 16–28 weeks.
Standard air conditioning has a practical lower limit of approximately −10°C to −20°C dew point. Rotary desiccant wheel dehumidification adsorbs moisture from the air and regenerates with heat — no refrigerant-based limitation. This is the only practical technology for −40°C to −65°C dew points.
Lithium-ion battery and EV battery manufacturing, semiconductor and electronics, pharmaceutical manufacturing, aerospace, medical device manufacturing, and advanced materials R&D. ACH Solutions has delivered dry rooms across all of these sectors.
Other Precision Environments
by ACH Solutions
Cleanrooms
ISO 14644-classified environments for pharmaceutical, biotech, semiconductor, and medical device applications. Combined dry room / cleanroom environments available.
Explore Cleanrooms →Cold Rooms
Precision temperature-controlled environments for pharmaceutical cold chain, biological sample preservation, and food-grade cold storage. GMP and GDP compliant.
Explore Cold Rooms →Construction Management
End-to-end construction management for regulated environments — single-point accountability from engineering design through to validated handover.
Explore Services →In-House Capability,
End to End
From sealed-shell construction through to fully fitted controlled environments — every dry room is built and verified under one roof.
Fitted Workstation Environment
Sealed Entry & Storage
Process Bench & Equipment
Installed Dry Room
Let's Define Your
Dry Room Requirement
Tell us your dew point target, room size, and industry. Our engineering handles the moisture load analysis — and you get a system sized to perform under real production conditions.