Nuaire Positive Input Ventilation April 2015 Daniel Evans

Why Do We Ventilate? Ventilation helps to promote a healthy, clean environment Designed to remove stale odours & replace with fresh air Prevent build up of excessive moisture & humidity Removes excessive C0₂ generated by humans & pets Therefore, when you are building your property, you must choose from one of the available options and make a selection that suits your build because of course, each house is unique. This is what is trying to be achieved by ventilating your property. The definition of ventilation is to replace stale air with fresh air and by doing so, creating a healthy, clean environment. This is the main reason for ventilation. To get rid of the stale air, odours and smells, from the kitchen and bathrooms, and bring in fresh air into the build. This is the secondary purpose of ventilation. Again, by extracting the moist, humid air from the kitchen and bathrooms this aids the prevention of condensation forming and mould growth occurring.

Lack of Ventilation - Effects Condensation Mould Growth Smells & Odours Dust Mites / Allergies Radon Rn (222) Radioactive, Colourless, Odourless gas. Rises from the ground Estimated 100,000 homes have a concentration above safe level 200Becquerel per m2. THESE ARE THE 4 MAIN PROBLEMS THAT CAN OCCUR IF A PROPERTY IS NOT ADEQUATELY VENTILATED. We’ve all seen this at some point, condensation forming on windows. The reason this happens is that condensation is produced. This happens in our daily routine, through cooking, cleaning, bathing, even breathing, all of these activities produces moisture. Now, during the day, when you’re home is warm the moisture is held within the air, but at night when it cools and you’re heating automatically goes off via the timer, the air starts to cool and the moisture will then be attracted to the coolest point of your home, which is normally the windows, but can be the gable end wall or your external doors for example. To put this into context for you, when you grab a cold can of coke from the fridge, it is dry, but if you leave it on a table for a couple of minutes, water droplets will naturally form on it. This is exactly the same scenario as the moisture we produce o a daily basis. This can become a real problem, as the moisture can seep into the window frames, the window sills and the surrounding walls and wall paper. Mould growth is another problem that can occur. When moisture settles on a surface, over time it can develop into mould which will look like black spots on the wall. Proper ventilation will prevent this. The worst case scenario would be when the mould growth actually penetrates the fabric of the build. This needs to be avoided as it could lead to costly repair work, again highlighting the importance of proper ventilation. We have all seen examples of this, mould growing in the corners of rooms, most people wipe it away and think the problem is solved, but its not, what you don’t see is what’s underneath this. The mould spores can and will penetrate the fabric of the build and can damage the paintwork and plastering, which is not desirable. This is a dust mite. With proper ventilation, as I’ve said, the air within the dwelling is cleaner. Because the air is clean, this reduces that number of dust mites as they cannot breed in that environment, but a lack of ventilation and their population will grow. There have been tests which show that the reduction of dust mites will help occupants who suffer from asthma and other respiratory problems. Adequate ventilation will also reduce the number of pollen particles in the air, which assists hay fever sufferers, and the level of pollutants in the atmosphere, again making it a cleaner, healthier place to live. This is an obvious one! If the ventilation does not work, then the smells and odours produced cannot escape, especially in today’s standard new build as they are being built to be very air tight and energy efficient. In old buildings they can escape through natural leakage points within the build like around the window and door frame, corners of walls, cracks in the ceiling etc. But with homes these days being built as air tight as possible, correct ventilation is essential to get rid of the odours and smells.

How We Generate Moisture (BBCC) Bathing Breathing Cooking Cleaning Average person generates 4 pints of moisture per day

How Do We Explain Moisture In The Home? YOUR PROPERTIES AIR IS LIKE A SPONGE Bathing, Breathing , Cooking & Cleaning generates moisture which is absorbed into the air (Like the tap running into the sponge) Your Properties air will accept a certain amount of moisture and hold onto it without dripping Once full the sponge leaks as it cannot hold anymore moisture (like in the air in your house) Once the sponge is leaking moisture forms on your windows and walls as the air is now full and cannot accept any more

What Is Condensation: How Do We Explain Condensation In The Home? Always Coca Cola!!! Condensation is caused when moisture held in the air meets a cold surface like a window or wall and condenses into water droplets. When we Bathe, Breathe Cook & Clean we create moisture which results in condensation It often results in black mould growth on walls and other surfaces or you can see actual water droplets. It is usually worse in corners, on or near windows, in or behind wardrobes and cupboards. CONDENSATION - THE MAIN CAUSE OF MOULD GROWTH

Moisture & Condensation: Moisture created in the bathroom from showering Once you open the door the moisture looks to escape to the coldest part of the house Below shows the result of poor ventilation within your home

Further Issues: Condensation Current Regulations & Standards drive buildings to save energy and reduce gaps in properties – lower fuel bills & save money Loft Insulation Double Glazing Cavity Wall Insulation Condensation All of the above measures reduce air leakage

Positive Input Ventilation (PIV) The Solution Positive Input Ventilation (PIV)

PIV - The History Nuaire are the originators of PIV Systems developed with North Eastern Gas Board Over ½ Million Nuaire PIV Systems installed in the UK Used by Local Authorities & Housing Associations all over the UK Independently Tested by independent bodies such as Napier University Report & Document IP/1200 by BRE

HHSRS - Category 1 Health Hazard! MOULD GROWTH IS CATEGORY 1! (SERIOUS RISK) Local authorities are under a duty to take action against category 1 hazards which include Damp and Mould Growth. As Landlords you have a responsibility under the Housing Health and Safety Rating System (HHSRS) to assess hazards and risks within your rental properties. Leaving mould present in property causes serious health issues, causing some tenants to successfully claim compensation from Landlords.

Dilute – Displace – Replace PIV - How It Works 2) The warm air then rises to the highest point, gaining heat energy giving you the benefit of some heat recovery 3) The air is then passed through the filters, and is gently fed into the dwelling via a central hallway diffuser 1) Clean, fresh air is continuously drawn in to the loft space through the loft’s natural leakage points 5) This process creates a clean, healthy environment to live in as fresh air replaces the stale air 4) The air then gently pressurises the house from inside out, driving out the moisture and condensation Dilute – Displace – Replace

Moisture & Condensation With PIV: Moisture created in the bathroom from showering Dirty moisture laden air is diluted by the clean fresh filtered air from the Drimaster Once you open the door the moisture looks to escape to the coldest part of the house Drimaster Diffuser is positioned in the hallway purposely to mix with the stale air Air escapes through the natural gaps in the property

When Are Additional Extract Fans/measures are Needed? When there is an internal wet area WITHOUT an openable window. When the air flow from the diffuser has to pass through two doors to reach a wet area.

When PIV is suitable on its own: Wet rooms directly off the hall (all with openable windows)

When is PIV not suitable on its own:

Continued…

Flatmaster: Typical Properties Why is the FLATMASTER manufactured to the size it is? To fit above Kitchen cupboard space Normally around 350-400mm space above cupboard (FLATMASTER Height 320mm)

Nuaire’s PIV Range Of Products:

DRIMASTER Unit capable of 60 l/s on normal operation Boosts to 70 l/s in Heat Recovery Mode 6 speed settings 10-60 l/s in steps of 10 l/s (may vary on different setting) 5 in built control strategies that adjust the operating temperatures Built in hour run monitor as standard flashes in hours/ days/months to tell total run time 1 amp fuse supplied with the unit Running cost 1p per day 5 year filter supplied as standard Everything supplied to fit the unit

DRIMASTER 2000 Unit capable of 60 l/s on normal operation Boosts to 70 l/s in Heat Recovery Mode 6 speed settings 10-60 l/s in steps of 10 l/s (may vary on different setting) 5 in built control strategies that adjust the operating temperatures Built in hour run monitor as standard flashes in hours/ days/months to tell total run time 1 amp fuse supplied with the unit T2 Sensor for additional heat recovery Running cost 1p per day G4 5 year filter supplied as standard G4 Filter – 5 Microns Everything supplied to fit the unit

DRIMASTER-HEAT Supplied with 500W Heater Thermostat Heater control Unit capable of 60 l/s on normal operation Boosts to 70 l/s in Heat Recovery Mode 6 speed settings 10-60 l/s 5 in built control strategies that adjust the operating temperatures Built in hour run monitor as standard flashes in hours/ days/months to tell total run time 1 amp fuse supplied with the unit Running cost 0.10p per day G4 5 year filter supplied as standard Everything supplied to fit the unit

DRIMASTER-3S All features as per the DRIMASTER units however supplied with an aluminium diffuser as per below For use in 3 storey properties Unit must be linked to smoke alarm Aluminium Diffuser with fire block for Protected Stairwell Running cost 1p per day G4 5 year filter supplied as standard Everything supplied to fit the unit

FLATMASTER Units can be ducted from side or the back of the unit Unit capable of 45 l/s on normal operation 3 speed settings 15-30-45 l/s 3 amp fuse supplied with the unit Unit capable of taking 100mm diameter or 121x60mm flat duct with both sets of spigots supplied as standard Running cost 1 to 1.5p per day G3 2 year filter supplied as standard

FLATMASTER 2000 Heater can be handed left or right Units can be ducted from side or the back of the unit Supplied with an in built 300W Heater Thermostat Heater control built in Unit capable of 45 l/s on normal operation 3 speed settings 15-30-45 l/s In built manual boost switch on the unit for heater 3 amp fuse supplied with the unit Unit capable of taking 100mm diameter or 121x60mm flat duct with both sets of spigots supplied as standard Running cost per day 15p based on unit at 30 l/s, last 12 months average temperatures & target temp of 8 degrees c (13p electric cost per KW Hour) G3 2 year filter supplied as standard

Thank you for listening Any Questions ?