Continuous running extractor fan set into a bathroom ceiling with the grille cover removed and ducting connected by MX2 Electrical

4.9 · 86 reviews

dMEV installation in Poole

If persistent condensation or mould affects your property, continuous ventilation helps protect indoor air quality. MX2 Electrical supplies and installs decentralised mechanical extract ventilation units and extractor fans across Poole and Bournemouth. Every installation includes safe electrical connections from an isolation switch, ducting checks, and calibration of trickle and boost rates.

  • Local & Trusted
  • Fast & Reliable
  • Upfront Pricing
  • Free Quotes

dMEV installation cost

Installation work is charged by the hour according to our standard labour rate. Overall costs depend on whether existing wiring and ducting can be reused or if new core drilling and cabling are needed.

  • Covers the electrical disconnection of old fans and connection of the new dMEV unit to an existing isolator circuit.
  • Covers configuring trickle rates and boost triggers during the installation visit.
  • Excludes the cost of the fan unit, external grilles, ducting materials, and core drilling through external walls.
  • Excludes running brand new electrical circuits from the consumer unit if no fan supply currently exists.
  • Current labour rate: £70 per hour.
  • Materials, specialist equipment and larger project work are confirmed separately before they go ahead.

Trusted by customers

Customer feedback across our domestic, commercial, and fault finding electrical work in Dorset.

4.9

MX2 Electrical is frequently praised for prompt, professional and friendly service, with electricians who explain the work clearly, offer options and complete jobs efficiently. Reviews commonly mention EICRs, EV charger installations, sockets, lighting, wiring, ventilation, consumer units and cooker work, with neat finishes, tidy work areas and fair pricing standing out. A small number of reviews raise concerns about follow-up costs and remedial work after EICRs.

Summarised with AI

I’m Really happy with the work from both of them. They installed a new socket in our conservatory and did a great job. They were both professional, friendly, tidy and made sure everything was done properly. I’m very pleased with the result and would definitely recommend them. Thank you both for your hard work!

Jonas “Almost Jonas” E.
Google

MX2 came along promptly to quote, their quote was reasonable and they gave us options. The work itself was done quickly, efficiently and very neatly, they went the extra mile adding extra without quibbling, and they left the flat in a very tidy space.

C.W 2.
Google

Great job

Asa, S.
MyBuilder

When a dMEV fan is the right answer

Intermittent extractor fans only run when switched on, often leaving damp air behind. Decentralised mechanical extract ventilation runs quietly in the background.

Flats and converted properties

Converted Victorian and Edwardian flats in Westbourne, Boscombe, and Ashley Cross often lack cross ventilation. A continuous low rate extract keeps moisture moving without creating draughts.

Landlord compliance and mould control

Rental properties facing condensation issues benefit from continuous extraction. Tenants cannot accidentally leave the fan switched off, protecting walls and ceilings from mould.

Upgrading noisy or broken fans

Older bathroom fans become loud and inefficient over time. Modern dMEV units use low energy DC motors that run continuously at barely audible sound levels.

What the installation covers

Every installation is completed to electrical safety standards and building regulations.

Included in the installation

  • Safely isolating the existing electrical supply
  • Removing the redundant extractor fan unit
  • Installing the new dMEV fan unit
  • Connecting to existing local isolator switch and wiring
  • Connecting to existing suitable ductwork
  • Setting background trickle speed and boost triggers
  • Testing electrical safety and airflow operation

Not included automatically

  • Core drilling new holes through external masonry
  • Installing new ducting routes through ceilings or loft spaces
  • Running new cable back to the main consumer unit
  • Plaster repair and decorative painting around old fan openings

What happens on the day

Here is what to expect when we visit to fit your extractor fan or dMEV system.

  1. 01

    Access and inspection

    We inspect the existing fan position, isolator switch, and external duct run. Please ensure clear access to the bathroom, isolation switch, and consumer unit.

  2. 02

    Fitting and connection

    We isolate the circuit, remove the old unit, mount the dMEV fan, and secure the electrical and duct connections.

  3. 03

    Commissioning and setup

    We configure the continuous trickle airflow and test the boost function before demonstrating how the unit operates.

What you receive

The visit ends with the fan running, the duct proved and the electrical work recorded.

A fan that runs continuously
The unit runs constantly on an energy efficient trickle setting, exchanging stale humid air for fresh air day and night.
A duct that actually reaches outside
We ensure your flexible or rigid ducting vents completely to the external wall or soffit grille without kinks or blockages.
Electrical certification
As a NAPIT registered contractor, MX2 Electrical provides appropriate certification for notifiable electrical installation work.
Settings you understand
We explain how the humidity sensors, timer overruns, or pull cord boost switches operate so you know what to expect.

Why choose us

Use one local team for electrical inspection, diagnosis, installation and certification across homes, workplaces and light-industrial settings.

Public liability £2,000,000 · Nvq level 3, Gold Card Electrician · NAPIT

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You see the price before you call

  • Starting prices for the common jobs are published on this site, not held back until someone visits.
  • Each one says what moves it: the circuit count on an EICR, the cable run on a charge point, the board type on a consumer unit.
  • The full price is confirmed against your actual job before any work starts.
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Ceiling downlight being fitted into a plasterboard ceiling by MX2 Electrical

Registered work, certificated properly

  • MX2 Electrical is NAPIT registered, and notifiable work is notified through that registration.
  • Consumer unit replacements, new circuits and inspections leave you holding the certificate.
  • The business carries two million pounds of public liability cover.
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New cable routed through exposed floor joists during a rewire by MX2 Electrical

The fault gets found before the repair gets priced

  • Testing establishes what is actually wrong rather than replacing parts in sequence.
  • You are told what was found and what putting it right involves before it is agreed.
  • Where an inspection turns up remedial work, it is quoted separately so it stays your decision.
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Cover being fitted to a new consumer unit by MX2 Electrical

dMEV and extractor fan questions

Common questions about installing dMEV continuous ventilation and extractor fans.

Why do you recommend dMEV over standard intermittent extractor fans?+

In my experience working on homes across Poole and Bournemouth, intermittent fans only clear air while someone is in the room. A dMEV fan runs constantly on a tiny amount of power, which stops moisture from settling on cold walls in the first place.

Can you wire a dMEV fan into my existing bathroom fan circuit?+

Yes, in most cases I can connect a new dMEV unit directly to your existing three pole isolator switch and lighting circuit, provided the existing wiring tests safe and sound.

Are continuous dMEV fans noisy to live with?+

Modern dMEV units use quiet DC motors designed for continuous background running. On trickle speed, they typically produce sound levels below normal background room noise.

How much electricity does a continuous extract fan use?+

Because they use low wattage DC motors, running a dMEV fan continuously on trickle speed consumes very little power, often just a few watts.

Does installing an extractor fan require notification under Part P?+

Work within bathroom zones involving new circuits is notifiable under building regulations. MX2 Electrical is NAPIT registered and notifies all relevant work directly.

Official ventilation guidance

Official guidance covering residential ventilation standards and health regulations.

Start with the job details

Share the electrical problem, property or site type and postcode. MX2 will confirm availability, scope and pricing before work goes ahead.