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ELTA MORI WMF100 SUB FLOOR VENTILATION

GET THE AIR MOVING
BENEATH YOUR FLOOR.

Active mains-powered sub floor ventilation for suspended timber floors. Choose the Supply fan to push fresh air IN, the Extract fan to pull stale humid air OUT, or combine both to create controlled airflow through the sub-floor void.

SUPPLY → AIR IN • SUB-FLOOR AIRFLOW • EXTRACT → AIR OUT
ACTIVE AIRFLOW Mechanical sub-floor ventilation
LOW ENERGY Designed for continuous operation
SUPPLY + EXTRACT Create controlled airflow
WEATHERPROOF Designed for difficult sub-floor spaces
SUB FLOOR VENTILATION FANS

WHEN PASSIVE AIRFLOW ISN'T ENOUGH, MOVE THE AIR.

Suspended timber floors rely on airflow beneath the property. Where natural ventilation through air bricks is limited, humid and stagnant air can remain trapped within the sub-floor void. The Elta MORI WMF100 range provides active mechanical ventilation to improve circulation beneath the building.

CHOOSE YOUR AIRFLOW DIRECTION

TWO FANS. TWO DIFFERENT JOBS.

Make sure you choose the correct WMF100 model. The Supply fan pushes air into the void. The Extract fan pulls air out.

SUPPLY • AIR IN
Elta MORI WMF100 Supply Sub Floor Ventilation Fan
ELTA MORI WMF100 SUPPLY

Push Fresh Air IN

The mains-powered WMF100 Supply fan actively pushes fresh air into the sub-floor void beneath suspended timber floors, providing mechanical ventilation where natural airflow may be insufficient.

£234.99 Inc VAT
  • Dedicated Supply model
  • Pushes air into the sub-floor void
  • Low-energy fan and motor assembly
  • Adjustable low-running and boost speeds
  • Helps improve airflow beneath suspended floors
  • Can be paired with the Extract model
VIEW WMF100 SUPPLY – AIR IN →
EXTRACT • AIR OUT
Elta MORI WMF100 Extract Sub Floor Ventilation Fan
ELTA MORI WMF100 EXTRACT

Pull Stale Air OUT

The WMF100 Extract fan actively pulls stale, humid air out of the sub-floor void, helping increase air movement in difficult-to-naturally-ventilate spaces beneath the property.

£234.99 Inc VAT
  • Dedicated Extract model
  • Pulls stale humid air out
  • Low-energy fan and motor assembly
  • Adjustable low-running and boost speeds
  • Supports humidity and moisture control
  • Can be paired with the Supply model
VIEW WMF100 EXTRACT – AIR OUT →
COMPLETE SUB FLOOR AIRFLOW

SUPPLY AIR IN.
EXTRACT AIR OUT.

Used together, the two WMF100 models can help create controlled airflow through the sub-floor void instead of relying only on natural air movement through passive ventilation openings.

WMF100 SUPPLY
PUSHES
AIR IN
→
SUB-FLOOR VOID
CONTROLLED
AIR MOVEMENT
→
WMF100 EXTRACT
PULLS
AIR OUT
WHY SUB FLOOR VENTILATION MATTERS

POOR AIRFLOW CAN LEAVE MOISTURE TRAPPED.

Active ventilation can improve airflow beneath suspended floors and help reduce humid, stagnant conditions associated with moisture build-up beneath the property.

01
HIGH HUMIDITY

Limited airflow can allow humid air to remain trapped beneath suspended floors.

02
CONDENSATION

Persistent humidity and poor ventilation can contribute to condensation within the sub-floor environment.

03
TIMBER MOISTURE

Damp sub-floor conditions can increase the risk of moisture-related problems affecting timber floors and joists.

04
POOR NATURAL AIRFLOW

Existing air bricks may not always create enough movement through difficult or restricted sub-floor voids.

WHICH MODEL DO I NEED?

SUPPLY OR EXTRACT? FOLLOW THE AIR.

The simplest way to distinguish the two models is by the direction you need the air to move.

AIR IN

Choose WMF100 Supply

Choose the Supply model when you need to actively introduce air into the sub-floor void. It pushes air beneath the suspended floor to improve circulation.

AIR OUT

Choose WMF100 Extract

Choose the Extract model when you need to actively pull stale, humid air out of the sub-floor space and discharge it away from the void.

RECOMMENDED COMPLETE SOLUTION

Supply Air IN. Extract Air OUT.

The WMF100 Supply and WMF100 Extract can be used together to create a complete sub-floor ventilation solution. One fan actively introduces air into the void while the other pulls stale, humid air out, helping create controlled airflow through the underfloor space.

VIEW SUPPLY – AIR IN → VIEW EXTRACT – AIR OUT →
ELTA MORI WMF100

BUILT FOR CONTINUOUS SUB FLOOR VENTILATION

A practical mechanical ventilation solution for hard-to-naturally ventilate spaces beneath suspended floors.

LOW-ENERGY MOTOR Low-energy fan and motor assembly designed for continuous operation.
UNDER £9 TYPICAL ANNUAL RUNNING COST Product information states typical electrical running costs under £9 per year for continuous operation.
ADJUSTABLE LOW RUNNING SPEED Allows airflow to be set to suit different sub-floor ventilation requirements.
BOOST SPEED Additional boost setting gives greater airflow when required.
HUMIDITY CONTROL Improving air movement helps reduce stagnant, moisture-laden conditions beneath suspended floors.
CONDENSATION CONTROL Continuous mechanical airflow can help reduce conditions that allow condensation to develop.
TIMBER FLOOR PROTECTION Better ventilation can help create a drier environment around suspended timber floors and joists.
COMPLETE SUPPLY + EXTRACT OPTION Use both dedicated models together to help create controlled airflow through the sub-floor space.
ELTA MORI WMF100

PURPOSE-BUILT FOR SUB FLOOR AIRFLOW

Elta MORI WMF100 sub floor ventilation fan
Elta MORI WMF100 sub floor fan installation
Elta MORI WMF100 sub floor ventilation system
LOW ENERGY • DESIGNED FOR CONTINUOUS OPERATION
UNDER £9 / YEAR

Typical electrical running cost stated for continuous operation.

SUB FLOOR VENTILATION FAQ

COMMON QUESTIONS ABOUT WMF100 SUB FLOOR FANS

What does a sub floor ventilation fan do?
A sub floor ventilation fan mechanically moves air through the void beneath a suspended floor. This helps improve circulation where natural airflow through passive ventilation openings may be insufficient.
What is the difference between the WMF100 Supply and Extract fans?
The WMF100 Supply pushes air into the sub-floor void. The WMF100 Extract pulls stale, humid air out. They are separate models designed to move air in opposite directions.
Can I use the Supply and Extract fan together?
Yes. The two models can be used together to create a more complete sub-floor ventilation system, with the Supply fan pushing air in and the Extract fan pulling air out.
Can a sub floor fan help reduce condensation?
Improved airflow can help reduce humid and stagnant conditions beneath a suspended floor, which can help reduce moisture build-up that contributes to condensation.
Can a sub floor ventilation fan help with timber moisture?
Improving ventilation can help create a drier environment beneath suspended timber floors and reduce moisture conditions associated with timber deterioration. Existing damaged timber should still be properly assessed and treated as required.
Does the WMF100 replace air bricks?
The WMF100 provides active mechanical ventilation rather than relying only on passive natural airflow. It can form part of a wider sub-floor ventilation system using suitable ventilation openings within the property.
Does the WMF100 run continuously?
The unit is designed for low-energy continuous operation, with adjustable low-running and boost speed settings.
How much does the Elta MORI WMF100 cost to run?
The supplied product information states typical electrical running costs of under £9 per year for continuous operation. Actual electricity costs can vary depending on tariff, settings and usage.
Which fan do I need if I want to pull damp air out?
Choose the WMF100 Extract model. It is the dedicated AIR OUT version designed to pull stale, humid air out of the sub-floor void.
Which fan do I need if I want to push fresh air underneath the floor?
Choose the WMF100 Supply model. It is the dedicated AIR IN version designed to push air into the sub-floor void.
Do I need one fan or more than one?
The number and type of fans required depends on the size, layout and ventilation needs of the sub-floor space. More difficult or larger voids may require more than one fan, and a Supply plus Extract arrangement can be used where controlled airflow through the void is required.

Installation, Maintenance & User Guide

View the Elta MORI WMF installation instructions, maintenance information and user guidance.

VIEW INSTALLATION & USER GUIDE →
ELTA MORI WMF100 SUB FLOOR VENTILATION

PUSH AIR IN.
PULL STALE AIR OUT.

Improve airflow beneath suspended timber floors with dedicated Elta MORI WMF100 Supply and Extract ventilation fans. Choose one direction or use both together for a complete airflow solution.

SUPPLY – AIR IN • £234.99 → EXTRACT – AIR OUT • £234.99 →