Isotherm Fan Coil Units

Recognising the demand for high performance fan coils on certain projects Biddle sourced the best quality components and developed a fan coil which has been proven in many prestigious installations.

Individual direct-drive fans, rather than a fan deck, ensure the highest performance and quiet operation, with a flame retardant polymeric-based drain tray enabling steam cleaning in environments such as hospitals.

Filters, of an EU2 grade, are of a cardboard frame type which can be removed without dismantling the ceiling grid. Available as an ‘on-show’ cased variant for high or low level use. 

Isotherm Horizontal Chassis Fan Coil - white background.jpg

Proven High-Quality Fan Coils - The sound of ongoing ventilation can become annoying, especially if a great number of hours is spent within that room.

The key to low noise, trouble-free performance lies in Isotherm’s exceptionally quiet fan/ motor specification combined with an acoustically-lined integral inlet plenum section. 

  • Benefits

    • Top quality construction & finish
    • Individual direct drive fans
    • Energy efficient
    • Cased or chassis option

Isotherm provides a double-inlet, double-width centrifugal fans incorporate built-indirect drive motors with advanced anti-vibration mountings and “sealed for life” bearings capable of more than 40,000 running hours.

All units are acoustically and thermally lined to further enhance their smooth and quiet operation.

  • Header RAL 9010

    With Isotherm, Biddle has laid down new standards in robust construction and finish quality. All unit casings are fabricated from high strength zinc plated steel to a unique Biddle design specifically to eliminate the risk of deformation and vibration. Both chassis and cased versions are finished to the highest standard using controlled electrostatic powder coating techniques (RAL 9010).

    The full spectrum of performance and application requirements is met with four chassis and four cased unit sizes, all available in horizontal and vertical configurations.

  • Fresh Air Damper

    Isotherm incorporates its own integral fresh air damper that efficiently provides more control of the recirculation and fresh air volumes.

  • Standard Control Package

    • Valves
    • Actuators
    • Controllers
    • Six step/branch transformer and sensor
  • Customer Specific Control Package

  • PDF
    Manual | Isotherm Fan Coil Units


Explore our images to see how our product can enhance the look and feel of any room.

Contact Us

Biddle leads the way in HVAC solutions, with a diverse product portfolio specifically designed to meet the extensive needs across all sectors.

As part of this partnership approach, we want to make sure you purchase the right HVAC product for you. That’s why we can offer you a comprehensive free site survey and 3 years warranty.

Our team is on hand to help and support you throughout your project

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