Nuaire CYFAN Extractor Fan

Health & Safety Considerations

Confirm safe access, stable footing and good lighting before you begin. Wear eye protection and a dust mask when core-drilling or chasing walls, and gloves when handling sharp grilles or ductwork.

Treat concealed services as live until proven otherwise and use a detector to check for hidden cables and pipes. Do not core-drill near gas flues, boiler terminals or other ventilation outlets. Keep the fan and ductwork clear of heat sources and do not obstruct any fire barriers.

In bathrooms, observe electrical zones and seek your electrician’s advice on a safe mounting position relative to baths or showers. Electrical work must be completed via a suitably rated isolator by a qualified electrician.

Site Preparation

Decide which room you are ventilating and choose a position that will remove moist, stale air efficiently without creating draughts. In bathrooms and WCs the usual position is high on an external wall or high on a ceiling with a short duct run to outside.

Aim to keep the duct as short and straight as possible, with minimal bends. Confirm that the chosen wall or ceiling can accept fixings and, for through-wall installation, that you can core-drill to the outside without obstruction.

Plan the route for the local isolator and discuss the cable run and boost control method with your electrician, for example switch-live from the room light, a separate boost switch or humidity-led boost.

If replacing an existing fan, check the duct diameter and the condition of any backdraught shutter and external grille. Ensure there is space to remove the front cover for cleaning after installation.

If you intend to serve an adjacent WC from the same unit using the optional side spigot accessory, confirm there is a clear short route for the 50mm branch duct and a suitable secondary grille position.

Limitations And Good Practice

Cyfan is a domestic extract fan for a single wet room or, when using the optional side spigot, for two small adjacent spaces. It must not be used to extract hazardous fumes or connected into flues or chimneys.

Keep the duct bore consistent from fan to outside and seal every joint airtight to prevent losses and noise. Where the route passes through a cold roof void, insulate the duct to reduce the risk of condensation.

For horizontal through-wall installations set a slight fall towards the exterior so any incidental moisture drains outside. Fit a weather-protected external grille or cowl with insect mesh and, where wind exposure is significant, include a quality backdraught shutter for intermittent installations.

Do not mount the fan where a door, cabinet or large fitting will block the airflow path. Leave clearance around the casing so the cover can be removed for cleaning. Provide a modest undercut to the room door so replacement air can enter the room freely.

Step-By-Step Installation

1. Make The Area Safe: Isolate any circuits you may encounter, verify with a detector that the drilling zone is free of services, and mark out the fan position and duct route.
   
   

2. Core-drill Or Cut The Duct Opening: For a through-wall installation, drill a clean core hole to the outside at the required diameter. Angle the hole very slightly to the exterior so any incidental moisture drains outwards. For a ceiling installation, cut the ceiling aperture and plan the shortest practicable route to an external termination. Deburr and clean openings.
   
   

3. Install The External Termination: From outside, offer up the weather cowl or grille, mark fixings, drill and plug as required, then seal the back face with a continuous bead of suitable exterior sealant. Fix the cowl square and tight to the wall to prevent water ingress. If using a wall sleeve or telescopic duct, cut to length and insert so it is fully home in the cowl spigot.
   
   

4. Fit The Ductwork: Insert the duct sleeve through the wall or route flexible or rigid duct to the termination. Keep bends gentle and the bore unobstructed. Seal all joints with appropriate mastic or tape and secure with bands or clamps. In loft or void spaces, insulate the duct to limit condensation.
   
   

5. Mount The Fan Body: Offer the backplate to the mounting surface, check it is level, mark and drill fixings, then secure with appropriate plugs and screws for the substrate. Ensure cable entry is neat and that there is sufficient clearance to remove the cover for cleaning.
   
   

6. Make The Electrical Connection: Your qualified electrician should install the local isolator, complete the fixed wiring to the fan and provide any boost control input required, for example switch-live from the room light or a separate boost switch. Do not energise the circuit until the installation is complete and covers are in place.
   
   

7. Attach The Duct To The Fan: Push the duct fully over the chosen discharge spigot and secure it airtight with a clamp or band. Confirm that any backdraught shutter moves freely. If you are using the optional side spigot to serve an adjacent space, install the 50mm branch and secondary grille now, keeping the run short and well sealed.
   
   

8. Fit The Front Cover: Clip or screw the cover into place, ensuring the airflow path is clear and the intake is not obstructed by sealant or debris.
   
   

9. Commission The Fan: Restore power at the isolator. Using the control interface, select the operating mode and set the background (trickle) airflow appropriate to the room size if you are running continuously. Set the boost airflow to meet the required extract rate, then configure how boost is triggered. If you are using humidity-led boost, choose a sensible relative humidity response so the fan reacts to steam without nuisance operation. If you are using a timer, set the run-on period so the fan continues to extract for a short time after the trigger ends. Enable constant-airflow or pressure-compensation features where provided so the fan maintains the set duty against wind and duct resistance.
   
   

10. Prove Operation And Finish: With the room door slightly ajar, confirm a smooth, even extract at the cover and check that air is discharging freely from the exterior cowl. Test the chosen boost trigger and verify that the fan returns to background speed after the run-on or when humidity falls. Seal around penetrations where needed, tidy the work area and label the isolator clearly.

Handover And Everyday Use

Explain to the household that the fan runs quietly in the background at a low rate when set to continuous mode and will increase speed automatically when moisture is produced or when a boost trigger is used. In intermittent mode it will start on demand and over-run for the period you set.

Day-to-day adjustment is rarely required. Encourage the occupant to keep the cover free of dust and to leave the isolator on so the fan can provide continuous protection against condensation and black mould. Remind them that a modest undercut on the room door helps replacement air reach the fan for best performance.

Maintenance And Aftercare

Routine care is simple. Every few months, isolate the power and remove the front cover. Wash the cover in warm soapy water, rinse and dry. Gently vacuum the impeller and interior with a soft brush attachment, taking care not to disturb any sensors.

Check that any backdraught shutter opens and closes freely and that duct joints remain airtight. Inspect the external cowl and clear any debris from the mesh. Refit the cover and restore power.

During periodic electrical checks, your electrician can confirm that trickle and boost settings are still appropriate and that run-on and humidity response suit the way the room is used.

Ancillary Products

For a neat, compliant Cyfan installation and a tidy finish, use the dedicated accessories below. They are sized to the fan’s spigots, simplify drilling and weatherproofing, and help you maintain short, well-sealed, low-resistance duct paths.

• Cyfan Window Kit (CYFAN-WKIT): Purpose-made kit for mounting Cyfan through glazing; provides the clamps, seals, shutter and fixings required for a safe, weather-tight window installation.
  
  

• Cyfan Wall Kits 5” (CYFAN-WALLKIT-WH/-COT/-TC/-BR): 125mm (5”) telescopic through-wall sleeve with low-resistance louvred outlet in White, Cotswold Beige, Terracotta or Brown, for clean, weather-proof terminations.
  
  

• Cyfan Wall Kits 6” (CYFAN-WALLKIT6-WH/-COT/-TC/-BR): 150mm (6”) colour-matched through-wall kits for projects using the larger duct size to reduce pressure drop on long or exposed routes.
  
  

• Cyfan Recess Kit (CYFAN-RKIT): Semi-recess mounting frame that lowers the fan profile on the wall or ceiling while preserving access for cleaning and commissioning.
  
  

• Cyfan Sub Spigot Kit (CYFAN-DKIT): 50mm side-spigot package (hose, spigots and filtered inlet grille) that allows extraction from an adjacent small room, typical bathroom/WC pair, from a single fan. Keep the branch short for best performance.
  
  

• Cyfan In-Room Ducting Kit (CYFAN-INROOM-KIT5): Short internal duct solution used when the fan must be offset from the external wall or a discrete indoor route is needed, supplied to suit 125mm systems.
  
  

• Cyfan Inline Ducting Kits (CYFAN-INLINE-KIT4 / CYFAN-INLINE-KIT5): Inline kits for 100mm and 125mm systems that help form tidy, concealed runs while controlling pressure drop and noise on offset routes.
  
  

• Cyfan Wall Plates (CYFAN-SWP/CYFAN-LWP): Small (223 × 275mm) and Large (335 × 255mm) rigid finishing plates that level uneven substrates and mask oversize cores for a professional perimeter detail around the fan.

Troubleshooting

If airflow feels weak, first clean the cover and check that the external cowl and mesh are not blocked. Confirm that the door has a small undercut so replacement air can enter the room.

If condensation persists, increase the background airflow slightly and review how boost is triggered.

If the fan is noisy, look for kinks or tight bends in the duct, check that the fan is mounted flat and firm, and confirm that all joints are airtight. Rattles are commonly caused by a loose cover or a shutter catching on a misaligned sleeve.

If the fan does not run, check the local isolator and protective fuse, then ask your electrician to verify the supply.

If the fan does not boost when expected, review the trigger method, lower the humidity response threshold a little, extend the run-on time, or verify that a switch-live feed is present when the room light is on, according to how you chose to control boost.

Q) What is the Nuaire Cyfan and what problem is it designed to solve?

A) Nuaire Cyfan is a compact, filterless centrifugal extract fan that can run either continuously or intermittently to ventilate bathrooms, kitchens, WCs and utility rooms. By removing moist, stale air at source and replacing it with fresher air drawn in through the dwelling’s background vents and leakage paths, Cyfan helps prevent surface condensation on cold bridges and window reveals, which in turn reduces the risk of black mould and damage to décor. Its high-efficiency 24V brushless DC motor drives a centrifugal impeller that maintains airflow against real-world duct resistance, so performance remains stable where basic axial fans struggle. The fan’s commissioning range covers low, quiet background trickle for 24/7 use and strong on-demand boost for steamy showers or cooking bursts. With optional SELV 24V electrical separation, multiple mounting formats and 100mm or 125mm discharge spigots supplied, Nuaire Cyfan provides a single, versatile answer to most domestic wet-room extract duties in both new build and retrofit.

Q) How does the Nuaire Cyfan work and why choose a centrifugal fan rather than an axial one?

A) Nuaire Cyfan uses a centrifugal impeller driven by a 24V brushless DC motor to generate pressure as well as flow, so it can overcome bends, grilles and modest duct lengths without the stall and noise often seen with axial fans. In practice this means the airflow you commission is more likely to be delivered at the external grille, which matters for meeting Building Regulations extract rates and for keeping moisture in check. Cyfan can run continuously at a quiet background trickle (a dMEV approach) and then ramp to a higher boost when demand rises, or it can be set to intermittent operation with a run-on timer. Humidity tracking detects rising relative humidity and increases speed automatically, then settles back as the space dries. Together, pressure capability and intelligent control provide steadier, quieter ventilation with lower risk of nuisance whistling or poor clearance compared with many basic on/off axial fans.

Q) Where should the Nuaire Cyfan be used and which rooms benefit most?

A) Nuaire Cyfan is intended for domestic “wet rooms” and moisture-prone spaces: bathrooms, en-suites, WCs, small kitchens and utility or laundry rooms. In bathrooms and en-suites, setting Cyfan to run continuously at a low trickle maintains a fresher baseline between showers; humidity-responsive boost then clears steam swiftly after use. In WCs, intermittent operation with a timed run-on provides effective odour control without long over-run. In compact kitchens and utilities, higher boost settings handle short bursts from cooking or clothes drying, while background trickle keeps the space comfortable. Thanks to its pressure capability, Cyfan suits through-wall sleeves, short in-room ducts and installations with façade grilles. Optional SELV 24V configuration makes it appropriate for splash-zone locations when installed to the relevant electrical zones. The overall aim is steady removal of moisture and stale air at source so the wider dwelling stays drier and cleaner day to day.

Q) What airflow ranges does the Nuaire Cyfan offer and how do they relate to Building Regulations?

A) Nuaire Cyfan is commissioned using simple dials to match the room and duty. In continuous mode the adjustable background (trickle) range is typically 6–30 litres per second, allowing you to set a quiet baseline suited to bathrooms, WCs and utilities. On-demand boost can be selected across a wide band from roughly 8–60 litres per second, which covers the higher rates required for kitchens and for rapid clearance after steamy or odorous events. These ranges align with the extract rates set out for wet rooms in Approved Document F when installed correctly and when the duct path is short, smooth and well sealed. Because Cyfan is centrifugal, it maintains duty more reliably against common back-pressures than many axial fans, so the airflow you set is more likely to be the airflow delivered. That combination of range and pressure capability supports compliance while keeping acoustics and running costs acceptable for long-term operation.

Q) What operation modes does the Nuaire Cyfan support and how do I choose between them?

A) Nuaire Cyfan can operate as a quiet, continuous-running dMEV fan or as an intermittent fan. In continuous mode, you commission a low background trickle to run 24/7, then select a stronger boost that is triggered automatically by humidity tracking or by a manual switch/pull-cord for short periods. This approach keeps humidity stable and is generally the best defence against condensation and black mould. In intermittent mode the fan starts on demand via a switch-live or pull-cord and continues for an adjustable run-on time (typically 1–30 minutes) after the trigger ends; this suits WCs and some kitchens where continuous extraction is not required. The choice depends on the room, occupancy pattern and compliance strategy. Bathrooms prone to condensation benefit most from continuous running, while WCs often suit intermittent with a sensible over-run. Cyfan’s commissioning flexibility lets one fan type cover both strategies across a dwelling or portfolio.

Q) How does Humidity Tracker on the Nuaire Cyfan work and how should I set it?

A) Humidity Tracker continuously samples the air at the fan and looks for sustained rises in relative humidity, typically ramping from around 60%RH upwards as moisture builds. When it detects a rise consistent with showering, bathing, laundry or cooking, Cyfan automatically increases speed to a pre-set boost level, clearing steam and moist air quickly. As conditions normalise, the fan gracefully returns to background trickle (in continuous mode) or completes its run-on (in intermittent mode). To set it, commission a background airflow that keeps the room comfortable and select a boost rate that clears visible steam without excessive noise. Where night-time disturbance is a concern, use manual boost for late showers and allow Humidity Tracker to handle daytime peaks. Because thresholds are designed to respond to real, sustained humidity rises, the system avoids nuisance boosting from short-lived spikes while still protecting the room fabric.

Q) Which duct size should I use with the Nuaire Cyfan: 100mm or 125mm?

A) Nuaire Cyfan ships with both 100mm and 125mm discharge spigots so you can align with the existing penetration or optimise performance. Use the 125mm outlet where possible—especially for longer routes, exposed façades or higher boost settings—because the larger bore reduces pressure drop and noise, making it easier to deliver the target l/s at the external grille. The 100mm outlet is ideal for direct replacements where the wall sleeve or grille already exists at that size, or where space dictates a compact termination. Whatever size you choose, keep the route short and straight, avoid tight bends, and seal every joint airtight. If the duct passes through a cold roof void, insulate it to reduce internal condensation risk. A quality, low-resistance external cowl with insect mesh completes the system, helping Cyfan’s centrifugal impeller maintain steady duty with minimal turbulence and whistling.

Q) Can the Nuaire Cyfan ventilate two rooms from one fan and how does the side spigot work?

A) Yes. Where two small wet rooms sit back-to-back—most commonly a bathroom and a WC—the optional subsidiary spigot kit adds a 50mm side take-off to the main Cyfan body. You install a short, well-sealed 50mm branch duct and a secondary grille into the adjacent room so Cyfan extracts from both spaces simultaneously. This approach saves time, cost and energy compared with fitting two separate fans, while keeping maintenance simple. For best results the branch run should be short, with gentle bends and airtight joints, and the main discharge should be 125mm if practicable to preserve overall capacity and keep noise low. Commission the fan so the combined extract meets the duty required for the pair of rooms, and check both grilles for steady draw with the door ajar. The side-spigot solution is intended for small, adjacent spaces; larger or separated rooms still require their own dedicated extract.

Q) What mounting options are available for the Nuaire Cyfan and how do I choose?

A) Nuaire Cyfan has been engineered for real-world flexibility. Surface mounting is the most common approach for through-wall installations or where the fan is fixed directly to a ceiling and ducted to an external termination. A semi-recess kit lowers the profile for a neater finish while preserving access for cleaning and commissioning. A dedicated window kit allows secure, weather-tight mounting through glazing, useful where a wall route is impractical. All formats accept the supplied 100mm or 125mm discharge spigot and accommodate the optional 50mm side spigot kit. Choose the method that offers the shortest, straightest path to outside, maintains clear access for cleaning, and respects bathroom electrical zones. For windows, follow the kit’s instructions carefully to ensure safe clamping and sealing. For any installation, confirm the wall or ceiling can accept fixings, avoid concealed services, and plan the local isolator and any boost controls with your electrician in advance.

Q) Is there a SELV 24V option for the Nuaire Cyfan and when should I use it?

A) Yes. Nuaire Cyfan can be configured as a Safety Extra Low Voltage (SELV) system using the supplied remote transformer enclosure, delivering 24V operation to the fan head. SELV is often preferred in bathroom electrical Zones 1 and 2, or wherever additional electrical separation is desirable to meet site risk assessments or client policies. The SELV configuration retains the same wide commissioning range for trickle and boost, as well as the same control features. During installation the transformer is mounted in a suitable, accessible location outside the designated splash zones, and the low-voltage cable is run to the fan position. Your electrician will advise on the safest mounting point relative to baths or showers and confirm that all works comply with current wiring regulations. Choosing SELV provides an extra layer of electrical safety without sacrificing performance or control flexibility.

Q) How do I commission the Nuaire Cyfan for the room and verify performance?

A) After mechanical and electrical installation, restore power at the local isolator and access the commissioning dials or interface as per the installation guide. Decide whether the fan will run continuously or intermittently. For continuous operation, set a low, steady background trickle that suits the room size and occupancy, then select a boost rate that clears steam or odours promptly without excessive noise. For intermittent operation, choose your boost setting and set the run-on timer (typically 1–30 minutes) to continue extraction after the trigger ends. Enable Humidity Tracker where appropriate so the fan responds automatically to rising RH. Prove operation with the room door slightly ajar: you should feel a smooth, even extract at the cover and see free discharge at the exterior cowl. Check that any backdraught shutter moves freely. Finally, listen for quiet, steady running and adjust slightly if the route or grille creates audible turbulence.

Q) How quiet is the Nuaire Cyfan in everyday use and what influences noise in practice?

A) Cyfan’s centrifugal impeller and brushless DC motor are designed for low electrical demand and unobtrusive acoustics, particularly at background trickle where it may run 24/7. Real-world noise is influenced as much by installation as by the fan itself. A short, straight, smooth-bore duct with sealed joints minimises turbulence and whistling, while a well-sized external cowl keeps resistance down. Using the 125mm spigot where practicable reduces velocity and perceived noise, especially on higher boost settings. Commission the lowest background that maintains comfort, reserving higher speeds for brief demand periods. Keep the cover and external grille clean so air paths stay open. When these details are observed, Nuaire Cyfan provides quiet, reliable extraction suitable for occupied homes without disturbing daily life or sleep.

Q) Does the Nuaire Cyfan help with Building Regulations compliance and whole-house strategies?

A) Nuaire Cyfan’s commissioning ranges and pressure capability allow you to set extract rates that align with the wet-room requirements in Approved Document F when installed correctly. In continuous mode it supports a decentralised mechanical extract ventilation (dMEV) strategy, providing low, steady background extraction in each wet room with on-demand boost for peaks. In intermittent mode it meets the room-by-room extract and run-on provisions when paired with an appropriate trigger. Because the fan maintains duty more reliably against duct resistance than many axial models, the airflow you set is more likely to be achieved at the termination, which supports compliance in practice rather than only on paper. Combined with sensible background air inlets and good heating practice, Cyfan forms a dependable part of a whole-house approach to managing moisture and indoor air quality.

Q) What routine maintenance does the Nuaire Cyfan require and how is it cleaned?

A) Cyfan is filterless, so there are no consumables to replace and upkeep is straightforward. Every few months, isolate the power at the local spur, remove the push-fit front cover, and wash it in warm soapy water before rinsing and drying. Gently vacuum the impeller and interior with a soft brush attachment, taking care not to disturb sensors or wiring. Check that any backdraught shutter opens and closes freely and that all duct joints remain airtight. From outside, clear debris from the cowl or louvre and confirm fixings and seals are intact. Refit the cover securely and restore power, then confirm the fan returns to the commissioned trickle and boosts correctly on demand. Periodic checks during electrical servicing can confirm settings still suit the household’s routines and that Humidity Tracker is delivering timely, efficient response without nuisance operation.

Q) What accessories and kits are available for a neat Nuaire Cyfan installation?

A) A range of purpose-made accessories supports tidy, compliant installations. The window kit enables secure, weather-tight mounting through glazing with appropriate clamping and sealing. Telescopic through-wall kits in colour-matched finishes provide adjustable sleeves and low-resistance external louvres for 100mm and 125mm systems, simplifying core drilling and weatherproofing. A semi-recess kit lowers the profile on the wall or ceiling while maintaining access for cleaning and commissioning. The subsidiary spigot kit adds a 50mm side take-off and filtered inlet for simultaneous extraction from an adjacent small room. In-room and inline ducting kits help create short internal offsets or slightly longer concealed routes while controlling pressure drop and noise. Rigid wall plates tidy oversize cores and level uneven substrates so the fan sits square and flush. Selecting the right combination keeps ducts short, joints airtight and resistance low, making commissioning more predictable.

Q) What are typical running costs for the Nuaire Cyfan and how energy efficient is it?

A) Nuaire Cyfan uses a high-efficiency 24V brushless DC motor designed for low electrical demand, particularly at the background trickle rates used in continuous mode. In day-to-day terms, the quiet trickle setting consumes only a small amount of power around the clock, while boost is used in short bursts to clear steam or odours, then the fan returns to its low setting. Humidity tracking helps target higher speeds only when genuinely needed, avoiding unnecessary energy use. Because the centrifugal impeller maintains duty against resistance, you are less likely to over-set speeds to compensate for duct losses, which also helps contain running costs. While exact cost depends on your commissioned l/s, duct path, usage pattern and tariff, Cyfan’s design focus on efficient continuous operation and short, effective boosts keeps electricity use modest and predictable across both new-build and retrofit applications.

Q) What are the limitations of the Nuaire Cyfan and what good-practice points should I observe?

A) Cyfan is a domestic extract fan for a single wet room or, using the optional side spigot, two small adjacent spaces. It must not be used to extract hazardous fumes, nor connected to chimneys or combustion flues. Keep duct diameter consistent from fan to outside, seal every joint airtight, and insulate ducts routed through cold voids to reduce internal condensation. Through-wall sleeves should be angled slightly towards the exterior so incidental moisture drains outside. Fit a weather-protected external termination with insect mesh, and include a quality backdraught shutter for intermittent installations in exposed locations. Do not mount the fan where a door or cabinet will block the airflow path, and leave space to remove the cover for cleaning. Provide a modest undercut to the room door so replacement air can enter freely. Finally, observe bathroom electrical zones and use the SELV option where site conditions or policy require additional electrical separation.

Q) How do I troubleshoot common issues on the Nuaire Cyfan such as weak airflow or noise?

A) Start with housekeeping. Clean the front cover and vacuum the external cowl or louvre to remove lint and debris. Check that the room door has a small undercut so makeup air can reach the fan. Inspect the duct route for kinks, crushed sections or tight bends and reseal any loose joints to cut turbulence. Confirm that any backdraught shutter moves freely and is not catching on a misaligned sleeve. If condensation persists, raise the background trickle slightly and verify that Humidity Tracker or your chosen boost trigger is enabled and set sensibly. If the fan is noisy, consider switching to the 125mm spigot to reduce velocity and check the external termination is low-resistance and square to the wall. If the unit will not run, check the local isolator and protective fuse and ask your electrician to verify the supply. After adjustments, re-prove operation with the door ajar and check for a smooth, even extract.

Q) What safety features and protections does the Nuaire Cyfan include?

A) Nuaire Cyfan incorporates practical safeguards for everyday use and maintenance. A safety interlock within the front grille confirms the cover is correctly fitted before the fan operates, reducing the risk of accidental contact with moving parts. The brushless DC motor uses sealed-for-life ball bearings and locked-rotor protection for durability under continuous or frequent-boost duty. Backdraught shutters for both 100mm and 125mm discharges are provided for intermittent installations to help prevent reverse flow when the fan is off. Optional SELV 24V configuration introduces electrical separation in splash-zone applications when installed with the remote transformer. The durable ABS casing resists knocks and moisture typical of wet-room environments. When combined with correct siting, appropriate ducting and a local isolator installed by a qualified electrician, these features support safe, long-term operation.

Q) What warranty does the Nuaire Cyfan carry and what does this mean for landlords and homeowners?

A) Nuaire Cyfan is supplied with a 5 year Warranty comprising 1 year Parts & Labour followed by 4 years Parts, reflecting confidence in its design for continuous running and frequent boosts. For landlords and housing providers this offers predictable life-cycle planning, minimal consumables thanks to the filterless design, and straightforward service tasks centred on periodic cleaning rather than parts replacement. For homeowners it provides peace of mind that the fan is built to last, with a centrifugal impeller and brushless DC motor chosen for durability under real-world duct resistance. Routine checks—clean cover, clear external cowl, verify settings—help maintain airflow and quietness across the warranty period and beyond. If the dwelling layout changes or usage patterns shift, Cyfan’s broad commissioning range makes it easy to re-tune background and boost for continuing comfort and moisture control.

Q) Can the Nuaire Cyfan replace an existing fan and what should I check before retrofit?

A) Yes. Cyfan is well suited to replacing older axial or centrifugal fans in bathrooms, WCs and small kitchens. Before starting, confirm the existing duct size and condition, and decide whether to use the 100mm or the 125mm outlet supplied with Cyfan. Check the external grille or cowl is sound, low-resistance and well sealed to the façade; replace it if damaged or restrictive. Verify there is a local isolator providing a safe means of isolation and discuss the boost trigger with your electrician (switch-live, pull-cord or humidity response). If you wish to serve an adjacent WC from the same unit, ensure a short, clear route exists for the optional 50mm side branch and that the combined duty will meet both rooms’ needs. After installation, select continuous or intermittent operation, commission the background and boost settings, and prove airflow at the cover and discharge. A careful retrofit typically delivers quieter running, steadier clearance and better compliance.

Q) How does the Nuaire Cyfan interact with other ventilation in the home, such as trickle vents or cooker hoods?

A) Nuaire Cyfan extracts moist, stale air directly from wet rooms; it is not a replacement for a dedicated cooker hood over a hob, but it complements one by maintaining baseline extraction and clearing residual moisture when the hood is off. In the wider dwelling, background air enters through trickle vents or infiltration paths, so keeping trickle vents open helps ensure stable pressure and make-up air for the fan. Doors with a modest undercut allow air to move from dry rooms to wet rooms, supporting effective cross-flow. Used in this way—steady extract in wet rooms, dedicated local capture over hobs, and good background air inlets—Cyfan forms part of a balanced strategy that improves indoor air quality and reduces condensation risk throughout the home with minimal disruption and low running cost.

CYFAN Consultants Specification

CYFAN Installation & Maintenance

CYFAN Product Information