Bathroom Extractor Fan Installation Cost

How Much to Install an Extractor Fan?

The average cost of hiring an electrician to install a bathroom extractor fan is typically between £150 and £300, covering both labour and materials. The exact price depends on the type of fan unit, the complexity of the ducting route, and ease of access.

Replacing an existing extractor fan like-for-like, where no new wiring or ducting is needed, is a much quicker and cheaper job than a new installation. Prices in London and the South East are generally higher than the national average.

Poor bathroom ventilation leads to excess moisture in the air, which can cause condensation on cold surfaces, damp, mould, and long-term damage to walls and flooring. A correctly installed extractor fan removes moist air quickly, helping to prevent these problems and improving air quality throughout the home.

Bathroom Extractor Fan Prices

Below are some estimated prices for the combined material and labour costs of hiring an electrician to replace or install a bathroom extractor fan. Although as outlined previously, electrician costs are likely to be higher in London and the South East when compared to the national average.

Bathroom Extractor Fan Cost Calculator

How Much to Fit an Extractor Fan? (Labour Only)

Electricians typically charge £45 to £70 per hour for extractor fan installation work. The table below shows the typical labour time and cost by job type:

Labour costs are generally higher in London and the South East, and larger or more complex jobs may need a second electrician, which is reflected in the quote.

How Much Does a Bathroom Extractor Fan Cost? (Supply Only)

The type of fan you choose has the biggest impact on the price of the unit itself. If you’re fitting the fan yourself, the unit is your only material cost, ranging from around £20 to £100 depending on the type and quality. The table below shows typical supply-only prices, with a breakdown of the pros and cons of each type underneath.

The pros and cons below cover each main type. Inline fans are left out here, as they’re generally used in larger or more industrial settings.

Wall Fan Cost

A wall fan is a popular choice for most bathroom installations, as it’s easy to set up, easy to run, and cheap to buy.

Pros

• ✔ Cost-effective
• ✔ Easy installation
• ✔ Easy reach to clean

Cons

• ✖ May collect dust quicker
• ✖ Can be noisier
• ✖ Potential to feel backdraft

Ceiling Fan Cost

A ceiling fan is another popular option, as it stays out of the way and draws air from the centre of the room. It suits upstairs bathrooms, where the ducting can run up into the loft.

Pros

• ✔ Quiet noise
• ✔ Durable
• ✔ Can be hidden easier

Cons

• ✖ Difficult installation
• ✖ Harder to clean
• ✖ Not easily reachable

Window Fan Cost

Window fans are less common than ceiling and wall fans, and are usually fitted through a hole cut in the bathroom window.

Pros

• ✔ Effective
• ✔ Removes heat and steam quicker
• ✔ Good quality

Cons

• ✖ Extensive installation process
• ✖ Can obstruct window views
• ✖ More expensive

Axial Fan Cost

An axial extractor fan is the most common choice for bathrooms and is usually fitted through an external wall for short airflow runs.

Pros

• ✔ Easy to find
• ✔ Cheaper in costs
• ✔ Ideal for short duct runs

Cons

• ✖ More wear & tear
• ✖ May need repairing often
• ✖ Shorter airflow rate

Centrifugal Fan Cost

Centrifugal extractor fans are less common and suit bathrooms set further from an external wall, moving air a greater distance to vent outside. They’re typically installed in ceilings.

Pros

• ✔ Powerful extraction rate
• ✔ Long-distance airflow
• ✔ Contemporary

Cons

• ✖ Noisy
• ✖ Difficult installation
• ✖ Bulky
• ✖ Higher energy consumption

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Additional Extractor Fan Installation Costs

Depending on the specifics of the installation, there are a few additional costs worth factoring into your budget. If the fan is part of a wider project, see our guide to full bathroom renovation costs.

• Making good around the fan — New installations often require patching plaster, repainting, or replacing tiles around the fan opening. Minor patching is typically included in a quote, but more extensive retiling can add £100 to £300. If damp has already taken hold, damp proofing may also be needed.
• Scaffolding or access equipment — If the ducting needs to exit through a high external wall, a scaffold tower may be required. A standard tower costs around £250 for a day.
• Switch installation — Adding a pull cord, a separate on/off switch, or upgrading to an automatic humidistat-controlled fan will add to the overall cost.
• New wiring — If the existing wiring is not in good condition or cannot be reused, the electrician will need to run new cables, which adds both time and material costs to the job.
• Removing the old fan — Taking out an existing bathroom extractor fan usually takes 1 to 2 hours and costs around £45 to £70 in labour, with waste sometimes charged separately at about £20. When you’re replacing a fan like for like, removal is normally quoted together with the installation as one job.

What Impacts Bathroom Extractor Fan Installation Costs?

There are lots of different aspects that can affect how much it will cost an electrician to install or replace an extractor fan, ranging from size, location and material. Below are several factors that you will need to take into account when planning and budgeting for this job. If you’re also considering kitchen ventilation, see our cooker hood installation cost guide.

What bathroom extractor fan feature do you consider most important?

Having a low price point

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Minimal noise output

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Powerful extraction/strong airflow

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Energy efficiency

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Automatic operation (timer or humidity sensor)

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Design (appearance, colour, etc.)

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Type of Fan

As to be expected, all fan types will have different price ranges. With standard wall fans being the cheapest, starting from £30, ceiling fans are also cheap at around £40, and window fans ranging between £50 and £60.

The quality of each of these will also play a part in the price, with higher quality fans starting at a higher price due to their durability and efficiency, saving you money in the long run on potential repair costs or issues.

Size of Fan

Large extractor fans use up more power and tend to be louder, using up more energy which makes them more expensive. You can find a standard fan for a small bathroom for between £30 and £35, using up less power due to the amount of air it needs to extract.

Ease of Access

If you decide on a ceiling fan or a far-reaching window fan, then an electrician may need to access your loft or exterior via erecting a scaffold to get to the area. This can add more time onto your project, as well as extra money for a scaffold with a standard tower costing £250 and a full day of labour.

What's Involved in Installing a Bathroom Extractor Fan?

When discussing with your contractor about the price of the job, it’s best to make sure that you have full knowledge of what you’re paying for by finding out what’s involved in installing a bathroom extractor fan. Below is a general guide of a standard extractor fan installation when done by a professional contractor.

• Preparation - After surveying the job and agreeing on a quote, the electrician will create space in your bathroom or loft, depending on the fan type and location. They'll clear insulation, switch off electrics, mark the vent position, drill through the wall or ceiling, and cut out the fitting space.
• Fitting the Vent - Once the hole is cut and debris cleared, the contractor attaches fittings to the vent, connects the duct pipe, drills holes for wall plugs, and secures the vent in place with screws.
• Installing the Fan - The fan’s frame is marked, drilled, and fixed into place. Ducting is then secured between the fan and the external ventilation source.
• Securing the Electrics - The electrician completes the wiring, connecting the fan to either the bathroom light or a separate switch, depending on your setup.
• Final Touches - Finally, a grill cover is fitted over the vent, completing the installation.

Where Can I Install an Extractor Fan?

Where you can fit an extractor fan comes down to how it will be wired and how the ducting reaches an external wall or roof vent. The main options are:

• Ceiling-mounted — Best where the loft sits directly above the bathroom, so ducting can run through the loft and wiring is easy to reach. Ground-floor bathrooms can be trickier, sometimes needing floors lifted to reach the supply.
• Wall-mounted — Suited to rooms on an external wall, allowing a short, direct duct run that keeps installation time and cost down.
• Window — Less common, and needs a hole cut in the window glass, but avoids wall or ceiling ducting entirely.
• Inline — For bathrooms far from an external wall, fitted in the loft with only the duct vent showing, giving the quietest operation.

When choosing a fan, the key technical factors are:

• Air movement rating (CFM) — This measures how quickly the fan unit moves air. For the average bathroom, a minimum of 80 cubic feet per minute (CFM) is recommended. Larger or more humid rooms need a higher rating.
• Noise levels (dB) — Smaller fans running near maximum capacity can be noisier. If noise is a concern, choosing a larger fan or a quiet-running model — or siting the fan unit in the loft — will help.
• Switching method — Fans can be wired to turn on with the bathroom light, run on a separate timer, activate via a humidistat (which detects moisture in the air), or be controlled by a manual switch located outside the bathroom. A pull cord switch within the bathroom is also an option.

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Bathroom Extractor Fan Benefits

A bathroom extractor fan protects the room from moisture damage that can be costly to put right. Its main benefits are:

• Prevents damp and mould – Clearing moist air stops damp and mould taking hold, avoiding the cost of professional mould removal and redecoration later.
• Saves money on repairs – Keeping steam off walls, sealant, paint, and plaster stops moisture damage that leads to costly repairs and redecorating.
• Improves air quality – Removing humid, stale air clears condensation, odours, and stuffiness for a healthier, more comfortable bathroom.

Hiring an Electrician to Install a Bathroom Extractor Fan Checklist

Here are some suggestions of what to look for when hiring an electrician to install a bathroom extractor fan.

• Do they have experience with bathroom extractor fan installations? Extractor fan work involves both electrical and ducting knowledge. Ask to see examples of previous installations and check reviews from past customers via MyJobQuote.
• Are they Part P qualified? All electrical work in bathrooms must comply with Part P building regulations. Check that your electrician is registered with a government-approved competent person scheme, such as NICEIC or NAPIT, so they can self-certify the work and issue an electrical safety certificate on completion.
• Do they have public liability insurance? Any reputable electrician should hold public liability insurance to cover against accidental damage or injury during the job. Always ask to see proof before work begins.
• Have you received more than 1 quote? Contact at least 3 electricians via MyJobQuote and request a written breakdown of costs, including the fan unit, labour, ducting, and any making-good work. This makes it easier to compare quotes on a like-for-like basis.
• Is the quote clear about what's included? Confirm whether the quote covers waste removal, patching or redecorating around the fan opening, and any switch or timer installation. Agreeing this upfront avoids unexpected costs later.

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