Systemair KVK 125 Duo Twin Fan - 125mm
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Delivery and Warranty
Standard UK Mainland Delivery
If you are not in a rush, then we offer standard delivery and your order should be with you between 2-3 working days.
£6.95
Next Working Day Delivery
Place your order before 12pm Monday to Thursday and receive your order the next working day. Orders placed on Friday before 11am will be processed and delivered on Monday. (Excludes Sunday’s and Public Holidays)
£15.95
Nominated Day Delivery
We know sometimes you will need an order on a particular date in the future. Simply select this option at checkout and add what date you would like to receive the order. We will then contact you to confirm the date. If you need to change this order date then please contact us ASAP.
£15.95
Northern Ireland Delivery
We offer a flat fee rate for Northern Ireland orders, and all are 5-7 working day lead times.
£29.95
Scottish Highlands & Islands Delivery
We only offer a flat fee rate for Scottish Highland & Islands orders, and all are 5-7 working day lead times.
£45.95
Channel Islands Delivery
We only offer a flat fee rate for Channel Islands orders, and all are 5-7 working day lead times.
£45.95
Product Details
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Specifications
Product specifications
| Brand | Systemair |
| Model | KVK 125 Duo |
| Configuration | Twin fan (run and standby) |
| Phase | 1 Phase (230V single phase) |
| Motor type | AC external rotor |
| Max airflow | Up to 190 m³/h |
| Duct connection | Circular, 125 mm |
| Speed control | Speed controllable |
| Insulation | 50 mm mineral wool |
| Warranty | 1 Year Manufacturer |
Summary
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KVK DUO models have double inlet centrifugal fans with forward-curved impellers and maintenance-free external rotor motors. To protect the motors from overheating the fans have integral thermal contacts with leads for connection to a motor protection device.
The KVK DUO models are manufactured from galvanised sheet steel and are thermally and acoustically insulated with a 50 mm layer of mineral wool. Internal surfaces are protected with perforated galvanised sheet steel.
- Speed-controllable
- Integral thermal contacts
- Low noise level
- Twin fan
Installation
The fans are easy to connect to spiral ducts using FK mounting clamps.
Specifications
| Brand | Systemair |
| Warranty | 1 Year Manufacturers |
| Duct dimension; Circular, inlet | 125mm |
| Duct connection type | Circular |
| Motor Type | AC |
Manuals & Guides
Systemair KVK 125 Duo Twin Fan - 125mm
Product Description
KVK DUO models have double inlet centrifugal fans with forward-curved impellers and maintenance-free external rotor motors. To protect the motors from overheating the fans have integral thermal contacts with leads for connection to a motor protection device.
The KVK DUO models are manufactured from galvanised sheet steel and are thermally and acoustically insulated with a 50 mm layer of mineral wool. Internal surfaces are protected with perforated galvanised sheet steel.
- Speed-controllable
- Integral thermal contacts
- Low noise level
- Twin fan
Installation
The fans are easy to connect to spiral ducts using FK mounting clamps.
Specifications
| Brand | Systemair |
| Warranty | 1 Year Manufacturers |
| Duct dimension; Circular, inlet | 125mm |
| Duct connection type | Circular |
| Motor Type | AC |
Manuals & Guides
Systemair KVK 125 Duo Twin Fan - 125mm
Delivery & Returns
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How does the twin run-and-standby design work?
The KVK 125 Duo houses two fans in one casing. One runs as the duty fan while the other stays on standby, ready to take over if the duty fan stops or on alternation, so ventilation continues without interruption and each fan shares the workload over time.
What is the maximum airflow of the KVK 125 Duo?
It delivers up to 190 m³/h, suiting smaller extract and supply systems on 125 mm ducting.
Can the fan speed be controlled?
Yes. The KVK 125 Duo is speed controllable, so airflow can be adjusted to suit the system.
What duct size does it fit?
It connects to 125 mm circular spiral ducting using FK mounting clamps for a quick and secure fit.
Is the motor protected against overheating?
Yes. The fan has integral thermal contacts with leads for connection to a motor protection device, safeguarding the maintenance-free external rotor motor.
Is the KVK 125 Duo insulated for quiet running?
Yes. The galvanised steel casing is thermally and acoustically insulated with a 50 mm layer of mineral wool to keep noise levels low.
