Condensation Control & Ventilation Solutions in Derbyshire (Derby) & West Nottinghamshire

Do you want to get a real insight into what is causing condensation and mould problems in your property?

If you do, read all about our condensation data logging service. The only way to get a true picture of what is really happening in your home.

PIV units have been preventing and curing condensation dampness related problems in homes for decades. They are also used to control other indoor air pollutants and have even proven to be an effective means for reducing Radon gas in some properties.

A positive input ventilation system gently forces air from the loft around a building (Roof Type). It reduces humidity and eliminates condensation, black mould and mildew. It is an effective and inexpensive way of eliminating black mould and takes maximum advantage of solar gain and warm air stratification.

Overall savings in central heating costs may be possible due to the recirculation of warm air at ceiling height.

The units are idea for most domestic properties, and also for second or holiday homes that are used infrequently.

The PIV unit is positioned in the loft above the landing in a house or central hallway of a bungalow, the system then re- circulates air around the property.

For buildings without a roof space, a wall mounted PIV unit is available. The unit is normally placed within a central hallway.

As mentioned above, all properties are unique and therefore it is important to make sure that the PIV unit being installed is suitable for the property. Where a property is not suitable, we may have other ventilation solutions which could be installed, such as de-centralised (Extract Fans) and a centralised MEV unit.

When we undertake a ventilation survey, our surveyor will discuss the different types of units to help you decide which is best for your property.

To arrange a ventilation/ condensation control survey or quotation - Call DERBY 01332 960160   - MATLOCK 01629 352019 or use our online contact form.

De-Centralised Option (dMEV Fans)

A de-centralised ventilation system involves the installation of individual fan units being fitted in the wet rooms of a property.

A wet room is classed as any room which produces excess moisture such as a Kitchen, Bathroom, Utility Room, En-suite and Toilet Room.

Each of these fans is ducted to the outside in order to remove the extracted moisture. This is normally through the external wall or through the roof to a tile/soffit vent.

(De-Centraslised) Continuous Running Extract Fan with Humidity Sensor (Nuaire Faith)

The NUAIRE FAITH is a compact, filterless, continuously running extract fan.

The fan has 3 running modes:

1) Trickle mode. (Normal running mode)

2) Comfort Boost Mode. (Activated by high humidity levels)

3) Boost Mode. (Activated by the pull cord or separate switch)

The fan has humidity sensors, which boosts the functionality of the fan when the amount of moisture in the room exceeds normal levels. If the humidistat is activated (Normally at 65 % RH - Relative Humidity), the unit automatically runs at comfort boost speed until humidity levels drop below the selected threshold.

These type of fans operate best when ducted straight out of a wall. They can also be installed on a ceiling, but the duct run to the outside of the building must be as short as possible so as not to affect the performance of the fan.

These fans should be fitted to wet rooms only (Kitchens, Bathrooms, Utility Rooms etc).

The fans are very quiet and the running costs are very low.

A Mechanical Extract Ventilation (MEV) system is a type of ventilation system used in buildings to remove stale air from indoor spaces, promoting better air quality and moisture control. Here's a detailed look at how it works:

How an MEV System Works

1. Extraction Points:

   • Location: MEV systems have extraction points strategically located in areas where moisture and pollutants are typically generated, such as kitchens, bathrooms, and utility rooms.
   • Purpose: These extraction points remove stale, humid, or polluted air from these wet rooms.

2. Continuous  Operation:

   • Continuous Operation: MEV systems operate continuously at a low level, ensuring a constant extraction of air. They may have boost modes that increase extraction rates during periods of high humidity or pollution.

3. Centralised Unit:

   • Design: The extracted air from various rooms is ducted to a central fan unit.
   • Function: This central unit then expels the stale air outside the building.

4. Replacement Air:

   • Natural Ingress: Fresh air typically enters the building through passive vents or trickle vents in windows or walls.
   • Airflow Path: The system creates a slight negative pressure, drawing fresh air in from outside, which then flows through living spaces to the extraction points.

Key Features and Benefits

• Improved Air Quality: By constantly removing stale air, MEV systems help reduce indoor pollutants, moisture, and odours, improving overall air quality.
• Humidity Control: Effective at controlling humidity levels, reducing the risk of condensation and mould growth.
• Energy Efficiency: MEV systems are more energy-efficient compared to natural ventilation, as they can be controlled to operate only when needed, minimizing unnecessary heat loss.
• Quiet Operation: Designed to operate quietly, ensuring minimal disruption to building occupants.

These systems are great for bungalows. It is possible to fit in a 2-storey house, but it is a lot harder to feed the ductwork through the house to the downstairs rooms.