Quality Air Management

500+

Chillers

9

Strategic depots

70+

Nationwide engineers

24/7

Support services

CRS engineers commissioning a packaged chillerCRS engineers commissioning a packaged chiller

Engineered Quality Air Management

Engineered around the conditions on site

Air quality equipment doesn’t work in isolation. Relative humidity (RH) and temperature are directly linked. Dehumidification holds RH steady. Heating and cooling hold temperature steady. Get the balance wrong and you increase the risk of condensation, mould, or stock damage, even with a working dehumidifier.

Before we specify, our engineers assess room size, existing air handling, moisture load from product or process, temperature requirements, building fabric and air infiltration. The result is one engineered solution, with temperature, humidity and airflow managed together.

  • Site assessment and environmental monitoring
  • Planned, reactive or emergency hire
  • Existing HVAC and site conditions considered
  • Equipment specified for the cause, not just the symptom
  • Heating, cooling and dehumidification engineered to work together
  • Airflow, ventilation and filtration incorporated where required
  • Sanitised units and new ducting for hygiene-sensitive sites
  • Installation, commissioning and ongoing engineering support

Operational Protection

Rapid environmental control for damp and mould response

Excess moisture, airborne dust and inadequate ventilation can do more than make a workplace uncomfortable. They can damage stock, delay construction programmes, affect manufacturing processes and create problems in occupied buildings.

Whether you're managing a sensitive production environment, drying a building after water damage or controlling dust during refurbishment, our engineers assess the conditions and specify the right combination of equipment to help keep work moving.

  • Protect stock, materials and sensitive processes
  • Rapid-response dehumidification and temporary climate control
  • Temperature and relative humidity assessment
  • Ventilation and airflow support where required
  • Reduce disruption from moisture, condensation and airborne dust
  • Support drying programmes and flood recovery
  • Environmental monitoring during the hire period
  • Manage airflow in occupied and industrial environments
  • Equipment delivery, installation and engineering support
  • Help with full compliance and sourcing a permanent solution.
  • Short- and long-term hire, installed and supported by our engineers
CRS engineers commissioning a packaged chillerCRS engineers commissioning a packaged chiller

Why CRS

Benefits of hiring quality air management from us

You don't need to know what's causing the problem before contacting us. Our engineers assess temperature, relative humidity, moisture and airflow to understand the conditions on site. We then recommend equipment suited to your building, process and operational requirements.

CRS packaged chiller on siteCRS packaged chiller on site

Air quality problems rarely have a one-size-fits-all solution. We can combine dehumidification, heating, cooling, ventilation and filtration where required, creating a temporary solution that works with your existing systems and helps maintain the conditions your operation needs.

CRS packaged chiller on siteCRS packaged chiller on site

From industrial dehumidifiers and drying equipment to ventilation fans, air scrubbers and HEPA filtration, we provide specialist equipment for commercial, industrial and sensitive environments. Our engineers select the appropriate units and capacity for your application, rather than simply supplying equipment off the shelf.

CRS packaged chiller on siteCRS packaged chiller on site

We manage more than equipment delivery. Our engineers can install, commission and maintain your temporary air management solution, with ongoing technical support throughout the hire period. Filter replacement and equipment servicing can also be incorporated where required.

CRS packaged chiller on siteCRS packaged chiller on site

Whether you're preparing for planned works, accelerating a drying programme or responding to flooding and unexpected moisture problems, we can help restore control of site conditions. Short- and long-term hire options give you flexibility as requirements change.

CRS packaged chiller on siteCRS packaged chiller on site

With nine depots across the UK and Ireland, we support commercial and industrial customers across a wide range of sectors. Our engineering teams provide installation, maintenance and 24/7 support, helping you manage air quality requirements wherever your operation is based.

CRS packaged chiller on siteCRS packaged chiller on site

Got a question?

Frequently Asked Questions

What does Quality Air Management cover?

Ventilation, air purification, dust control, and dehumidification or humidification — including specialised humidity control for product manufacturing. Equipment is available on short- or long-term hire.

How do I know if I have a temperature or a humidity problem?

You do not need to diagnose it before contacting us. Temperature and relative humidity (RH) interact, while moisture and airflow can also affect conditions. Our engineers measure what is happening on site and identify what needs controlling before equipment is specified.

What’s the difference between a desiccant and a refrigerant dehumidifier?

Refrigerant (DX) dehumidifiers control moisture on a cooled coil and suit warmer spaces. Desiccant dehumidifiers absorb moisture using a desiccant material, so they keep working at low temperatures and where very dry air is needed, such as cold stores and sensitive processes. We specify the type one site conditions are measured.

What relative humidity should I maintain? 

There is no single RH level that suits every application. The right conditions depend on the building, process, product, materials and operating environment. We specify around the conditions your operations need.

Can you control humidity across large commercial and industrial spaces? 

Yes. Larger or more complex spaces may require multiple units, error distribution and a combination of humidification heating or ventilation. We assess the site before specifying any rental solution.

Can you dehumidify cold stores and freezers? 

Yes. Warm, humid air entering during door openings causes frost on evaporative coils, icing and wet, slippery floors. Low-temperature dehumidification treats the air entering the space, reducing icing and defrost cycles.

Can heating, cooling and humidity control be used together? 

Yes. Temperature and RH influence each other. Where required, our engineers integrate our dehumidification units with your existing heating and cooling, or supply heating and cooling alongside it.

How does emergency flood recovery hire work?

We provide a combination of drying, dehumidification and heating for emergency flood recovery, domestic or commercial, with 24/7 support and nationwide delivery within 24 hours, where feasible.

What is the difference between air purification and ventilation?

Air purification uses filtration to reduce airborne particles, Ventilation introduces, extracts or moves air to manage error changes and airflow. They solve different problems and can be combined where the application requires it.

What is thermal disinfection and how does it work? 

Our TES 200 units combine heat-based decontamination with H14 HEPA filtration to treat rooms and surfaces without chemicals — spaces can be reoccupied immediately after treatment.

Can temporary equipment help manage damp and mould in social housing?

Yes. Temporary dehumidification, heating, ventilation and environmental monitoring can help manage indoor conditions while the underlying cause is investigated and remedial works are arranged. Our engineers assess the property and recommend suitable equipment to support the response.

Learn more about Awaab's Law and damp and mould management.

Trusted standards

Accredited & Compliant

Cyber Essentials CertifiedCyber Essentials Certified
ISO 9001 CertifiedISO 9001 Certified
ISO 14001 CertifiedISO 14001 Certified
ISO 45001 CertifiedISO 45001 Certified
Eurovent Certified PerformanceEurovent Certified Performance
Hire Association Europe memberHire Association Europe member

Real-world results

Case Studies

2x TAC V+ units, 48-hour delivery turnaround2x TAC V+ units, 48-hour delivery turnaround

7 February 2026

Air Purification For Local School Parents' Evenings

Improve indoor air quality during busy school events. Two TAC V+ air purifiers were supplied within 48 hours to support safer shared spaces.

6 February 2026

Desiccant Drying Project for Major Retailer

Excess moisture required specialist drying in a live retail environment. Desiccant dehumidification provided targeted humidity control to manage conditions on site. 

5 February 2026

Hospital Air Purification

Air quality was critical within this healthcare environment during adjacent construction. Specialist air purification provided additional filtration where maintaining clean, controlled conditions mattered most.

Ready to hire? Get a quote today.

Air quality problem? Flood on site? Tell us the conditions and our experienced engineering team can identify the right solution – planned, reactive or emergency.