Zehnder Caladair Thermover


Zehnder Caladair Thermover Double Flux Air Treatment Station

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Further Information

Flow Rates and Configuration

Caladair Thermover Flow Rates

Thermover 180S

Thermover 280S

Thermover 400S

Thermover 500S


Zehnder Caladair Thermover Double Flux Air Treatment Station

Product part Number






Please Note – These units are built to order
For a lead time on these Caladair Thermover Commercial Units please contact our sales team on 028 2827 5150

Caladair Thermover is a highly efficient double flux air treatment station, it features active energy recovery and is integrated with reversible thermodynamic system for optional climate control in all seasons and for supply of optimal air quality.

Thermover units are designed for air treatment in commercial applications such as tertiary and industrial premises. These units are self-regulating, plug & play air handling units providing high performance.

Key Features

  • High energy efficient double flux air treatment
  • High performance
  • Range of four different unit sizes
  • Flows rates from 600 to 500 m3/h
  • Can operate in constant pressure or constant flow modes
  • F7 filters
  • Low noise level for acoustic comfort
  • 100% plug and play
  • FEE® - Free energy efficiency
  • Cool recovery, free cooling and night cooling
  • Increases good indoor air quality determined by CO2 sensor
  • 2 years parts warranty
  • Energy savings of up to 40%

Unit Range

-          Caladair Thermover 180S

-          Caladair Thermover 280S

-          Caladair Thermover 400S

-          Caladair Thermover 500S


Available in 4 models and 4 versions, the Thermover range covers flow rates from 600 to 5000 m3/h.

The Thermover range is available in 4 versions in order to suit different usage conditions:

First: Self-regulating, plug & play, Modbus RS485 networked station for use in a temperate climate supported by a reversible, thermodynamic system, active temperature management through optimised energy consumption and climate control as well as continued indoor air quality control (IAQ) via a CO2 sensor.

Premium: Identical to First but also equipped with an electric battery for precision heating and air blow or ambient intake temperature control for external temperatures as low as -15°C.

Must: First features and also including integrated hydraulic kit for ECS production in all seasons.

Genius: Identical features to Premium including integrated hydraulic kit for ECS production.


Thermover units are fitted with F7 opacimetric filters for the supply and extract airflows.


The Thermover station is composed of 3 modules, 2 ventilation modules with a fan motor and filter with the central module combining all energy recovery and thermodynamic functions for heat and cooling.

Constructed of aluminium with polyamide thermal break space and 10/10e double skin panels

External face is pre-lacquered RAL 7035 metal with protective film and the internal face is constructed of galvanised

Rectangular connections with straightforward fastening to the aluminium structure

Fast and easy access via screw secured panels

Technical compartment access via hinged doors with screws


Direct current high efficiency plug fan with electronic commutation (EC), integrated thermal overload and variable speed protection. EC technology is an econological® solution guaranteeing low energy consumption (RT2012) for the management, control and regulation of the operating point (flow rate regulation). Fans are fitted with a signalling pressure transmitter for the regulation of an eventual fault. Low noise levels for superior acoustic comfort.


Certified Eurovent, variable speed, high efficiency aluminium rotary exchanger with drain section. The exchanger is mounted on slide rails for easier removal and maintenance.

The variable speed of the exchanger enables improved Thermover station performance particularly during the mid-season period.

The exchanger is fitted with a rotation detector which is associated with Easy regulation and indicates the (default) working order of the variable motor or the timing belt.

Insulation of Ductwork

We recommend you use Metal Spiral Ducting and fittings due to superior strength.

To provide the best performance in airtightness and durability we recommend You provide greater mechanical strength to a joint by using self-sealing fittings or a combination of Ducting Sealant and Aluminium Duct Sealing Tape.

  1. Apply Duct sealant to the male fitting
  2. Push together
  3. Apply Aluminium Duct Sealing Tape over joint

It is important that any ducting located in a cold area (e.g. loft space) to be insulated. The insulation needs to be the equivalent of 25mm thick and have a thermal conductivity of 0.04W/(m.k) or less.

This ensures that condensation doesn’t form due to the difference in air temperature inside the duct when compared to the air temperature in the cold space.

If you don’t have a loft space there is still a need for insulated ducting on the intake and exhaust legs, as they will be carrying cold air in a warm space. The level of insulation can be achieved by wrapping PVC duct in a layer of 25mm duct wrap that has a silver foil face on a 25mm rockwool

It is also worth noting that foil wrap with air bubbles (bubble wrap) is no longer applicable in building control regulations.


Caladair Thermover is compatible with a range of ducting options, there are also a range of controllers, sensors, silencers and valves that are compatible to be able to complete installation of your ventilation system.


2-year parts guarantee

Technical Specification

Technical Specification


Caladair Thermover 180S / 280S / 400S / 500S

Energy Recovery Efficiency

Up to 40%

Airflow rate Max m3/h

600 - 5000

Airflow rate @ 600 Pa m3/h

1500 - 4400

Max dwelling size M2 @.3 ACH


Max dwelling size M2 @ .5ACH


Max room extraction


ERP rating

Compliant with ErP2009/125/EC

Specific fan power (lowest)


Weight (kg)

665 / 845 / 935 / 1120



Pre/ Post Heater

Optional accessory

Summer Bypass 


Frost protection 


Sound level @3m db.(a)

67 - 85



Ductwork connections

2 rear – 2 front ductwork connections

Duct Diameter (mm)

4 x side connections 675 x 395 / 925 x 450 / 495 x 305 / 555 x 295

Condensate drain



2 years: parts only

Country of manufacture


Heat exchanger

Aluminium rotary heat exchanger

Digital Controller

LCD display control screen

Boost Switch control

No (optional timer box)

Interactive App Control


Internal Humidity control


Available room sensors

Temperature, IAQ, CO2





SAP Appendix Q


Fireplace mode


Alarm system integration


Passive House



BPC have years of experience in delivering equipment around the UK and other Worldwide destinations. Our dedicated dispatch team work hard to ensure the highest standards are met so that your goods arrive on-time and in pristine condition.

Our market knowledge and experience allow us to match our service to meet your requirements swiftly and safely.

Free Delivery

We offer free delivery on any order over £100 to any mainland UK or Ireland address  

Worldwide Delivery

Worldwide delivery is possible on almost all our products at low costs, delivery to countries outside the EU are normally delivered to the nearest customs office, port or terminal for the purchaser to collect and complete custom clearance.

Please contact us to confirm shipping cost and availability.  

End-To-End Support Delivery is available within 48-72 hrs, depending on method of transport, for hundreds of stock items.

Customers receiving a pallet delivery will be emailed on day of dispatch advising of delivery date. Parcel deliveries will be notified via email or SMS directly from DPD.

These checks are part of a unique commitment to building relationships with customers, understanding their specific delivery needs and responding to them positively and promptly.  

We deliver on Service

Key components such as ductwork and fittings plus the most popular selling MVHR units are kept in stock in our UK-based warehouse, which means that you receive the best possible delivery dates.

All goods are expertly packed by a professional team so that your equipment is received in pristine condition ready for installation.

All deliveries co-ordinated to suit your specific requirements and construction programme.

Delivery Partners

We only use the couriers with the highest standard of service that include

  • Fastway
  • DPD
  • Montgomery Transport
  • Liam Connolly Roadfreight Ltd
  • Europa Worldwide


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