Fixington

Replace an extractor fan

Trade: Electrician

⭐ Introduction

Extractor fans play a key role in keeping your home well-ventilated, particularly in moisture-prone rooms like kitchens and bathrooms. Over time, your extractor fan may become less effective, noisy, or stop working altogether. Replacing an extractor fan is essential to reduce condensation, prevent mould growth, and improve indoor air quality.

You’ll typically need a replacement when your current fan is faulty, outdated, or if you’re upgrading to a more energy-efficient or quieter model. In many UK homes, extractor fans also help meet Building Regulations for ventilation, so having a functioning fan is important for compliance.

🔧 What the job involves

Replacing an extractor fan is usually straightforward but requires some electrical work and careful handling. Here’s what the job generally includes:

  • Removing the old fan: Disconnecting the existing extractor from power and physically taking it down.
  • Checking the wiring and ducting: Ensuring the electrical connections and air pathways are safe and compliant.
  • Installing the new fan unit: Fixing the replacement fan securely in place and connecting it to power and any external vents.
  • Testing the fan: Confirming it runs correctly and quietly, with appropriate airflow.
  • Tidying up: Completing any minor repairs to plaster or tiles around the fan if needed.

Because extractor fans involve electrical wiring, the work must comply with UK electrical safety regulations. In kitchens and bathrooms, where moisture is present, wiring must meet Part P of the Building Regulations and should be carried out or certified by a qualified electrician.

📝 Step-by-step from booking to completion

  1. Enquiry: Contact a qualified electrician or local tradesperson to discuss your needs. They'll ask about the current fan type and location.
  2. Survey and quote: The electrician visits your home to assess the existing installation, check wiring condition, and confirm suitable replacement options. They provide a detailed quotation.
  3. Agree and schedule: Once you’re happy with the quote, arrange a convenient date for the work.
  4. Day of works: The electrician arrives, switches off relevant power supplies, removes the old fan, installs the new one, and tests it.
  5. Completion and paperwork: You'll receive a compliance certificate or written confirmation that the electrical work meets regulations. The electrician will advise on operation and maintenance.
  6. Payment and feedback: Settle the invoice and keep in touch for any future servicing or questions.

💷 Main costs to expect

When budgeting for extractor fan replacement, consider these typical costs:

  • Labour: £60–£120 per hour depending on the electrician's experience and your location.
  • Extractor fan unit: £40–£150, varying on model, airflow capacity, and features like humidity sensors or timers.
  • Fitting accessories: Vent cowls, ducting, or backdraught shutters may add £10–£30.
  • Disposal: Some electrics may charge around £10–£20 to remove and dispose of the old fan safely.
  • Certification: Cost may be included in labour or charged separately if a Part P Electrical Installation Certificate is provided.

Example itemisation:

  • Labour (1.5 hours): £90
  • Fan unit: £80
  • Disposal: £15
  • Certification: Included
    Total estimate: £185 + VAT

📊 What affects the price

Prices for replacing extractor fans vary due to several factors:

  • Access and location: Fans installed high up, in lofts, or awkward places may increase installation time.
  • Complexity: Upgrading to a new type of fan, or adding ducting to a previously non-vented wall, requires extra work.
  • Regulatory requirements: Work in a bathroom or kitchen must comply with Part P; certification may add cost.
  • Remedial work: Repairs to walls, ceilings, or replacing old wiring will increase labour and material costs.
  • Geographical location: Tradespeople in London or the South East often charge higher rates than other UK regions.
  • Urgency/timelines: Short-notice call-outs or weekend work may be more expensive.

⏱ How long does it take?

A straightforward extractor fan replacement usually takes between 30 minutes and 2 hours depending on the job complexity.

  • Simple swap: Removing a like-for-like fan, with easy access and existing ducting – about 30 to 45 minutes.
  • Moderate job: Fitting a different fan model, adjusting ducting, or minor cosmetic repairs – 1 to 2 hours.
  • Complex install: Adding new ductwork or electrical circuits, repairs to surface finishes – 2–4 hours or more.

🏠 Can you DIY it?

While DIY enthusiast capabilities vary, extractor fans involve electrical wiring and, in wet rooms, must adhere to safety standards under Part P regulations.

  • Safety concerns: Incorrect electrical work risks electric shock or fire and may invalidate home insurance.
  • Legal requirements: Electrical work in kitchens, bathrooms, and some other areas should be done or certified by a qualified electrician.
  • Building Regulations: Compliance and certification are often required when altering ventilation or electrics.
  • Working at height: Many fans are in awkward spots or ceilings, increasing risk.

If you are not fully confident with electrical installations or knowledge of UK wiring regulations, it’s safer and usually more cost-effective long-term to hire a Gas Safe registered or Part P certified electrician.

💰 Typical UK price range

Expect to pay approximately £120 to £300 (including labour, parts, and certification) for replacing a standard extractor fan in a kitchen or bathroom. Prices exclude VAT, which is typically 20% on labour and parts unless you are VAT registered as a customer.

More complex installations involving new ducting or rewiring can be higher, up to £400 or more.

✅ Handy tips before you start

  • Choose the right fan: Match airflow (measured in litres per second, l/s) to the size of your room. Bathrooms usually require 15–30 l/s; kitchens higher.
  • Check for additional features: Humidity sensors or timers can improve efficiency but may add to cost.
  • Prepare the area: Clear a safe workspace, cover surfaces, and remove delicate items near the fan.
  • Keep paperwork: Save any certificates or invoices for future reference or resale.
  • Ask about warranties: Check manufacturer and installer guarantees, and understand maintenance requirements.
  • Regular servicing: Clean extractor fans periodically to ensure performance and longevity.

Replacing an extractor fan is an important maintenance task that enhances comfort and protects your home from damp and mould. Planning carefully and hiring a qualified electrician ensures the job is done safely and effectively.