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The Importance of Ductwork Airtightness

The Benefits of Subfloor Ventilation for Australian Homes

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Our Online Store offers a range of premium ventilation kits, using the same products we install in our business on a daily basis.

Why Premium Components and Proper Installation Matter Fresh Ventilation supplies a range of efficient and technologically superior sub floor ventilation products. Our exclusive design is based on years of knowledge, experience and trialling competing products. Not all components are equal! System Design Instead of using a single larger fan, we use smaller fans but more of them. More fans allow greater coverage, better efficiency and more extraction points. A single larger fan makes more noise, uses more power and requires longer duct runs to cover the same area as two smaller fans. This is inefficient and leads to uneven duct lengths and subsequently uneven air flow. Our smaller fans use the same size ducting as our exhaust grilles and we allow one exhaust grille per fan. This allows air to be freely exhausted without a reduction in air flow due to pressure buildup. Larger fans need reducers to reduce the duct size so that they can be connected to exhaust grilles. This results in a reduction of air flow due to resistance. When comparing our systems against other systems with the same suggested coverage areas, our kits include more fans, more duct, more extraction points and more exhaust grilles. Our systems are designed to properly ventilate your sub floor area. Our kits include the necessary components and advice to do the job properly the first time. Fans Our 150mm super quiet energy saving EC motor mixed flow fans have a capacity of 515 m³/h. The variable speed EC motor consumes a maximum of 31 W when running at full speed. The variable speed EC motor makes a maximum of 31 dB(A) noise (3m breakout). Our fans make less noise and use less power. Some larger fans use 193 W when operating and have less capacity than two of our smaller fans. Our super quiet fans have a 2 year replacement warranty. Duct Our duct is manufactured in Australia from two layers of high grade metallised polyester bonded together with fire rated resin encapsulating spring steel wire. Our duct is not prone to tearing or unravelling like single layer competing products. Exhaust Grilles Our exhaust grilles are anodised aluminium, not plastic. Our grilles are weather proof and have a rodent proof mesh behind them. Our grilles are easy to install since they replace two standard bricks. The back box fills the hole left after removing two bricks and the anodised grille clips into the back box and covers any gaps with a 25mm flange. They don't require partial removal of bricks to create a round hole. Timer Our digital timer has a battery backup. It won't lose time and start running in the middle of the night. Our digital timer can be programmed differently on different days of the week. This is ideal when you want different operation on the weekends. Why Sub Floor Ventilation is Important Many pest and building inspectors recommend sub floor ventilation to reduce termite risk. These systems are very effective in homes that experience a continuing musty odour or where there is mould on shoes and clothes in wardrobes or on furniture in living spaces. Your sub floor area may seem insignificant because it does not form part of your living room. However, the fact of the matter is that this space actually has a high impact on the quality of air you breathe in while you are indoors and may affect your health. Poorly ventilated sub floor areas are often damp. This dampness can result in mould, mildew, musty odours, wood rot and pest infestation in your sub floor area and can also contribute to the spread of mould, mildew and allergies above. Sub floor ventilation can remove ground moisture from underneath raised floors, creating a drier and warmer sub floor area. Types of Sub Floor Ventilation The two main types of sub floor ventilation systems are: Ducted sub floor ventilation systems using inline fans and duct. Wall-mounted sub floor ventilation systems using wall-mounted fans. Ducted Sub Floor Ventilation Systems Fresh Ventilation supplies a range of efficient and technologically superior ducted sub floor ventilation products. Our systems utilise the latest in ventilation technology, with Australian made components and Italian made EC motor mixed flow fans by Vortice. Ducted sub floor ventilation systems have significant advantages: Duct can be run to problem areas. The ability to have multiple pickup points means coverage is far greater. Smart design can achieve excellent cross-flow ventilation. Stale air can be drawn from deep in the sub floor area. Premium mixed flow fans with centrifugal impellers are much quieter than most wall-mounted fans and outperform axial wall-mounted fans in a ducted system. Wall-Mounted Sub Floor Ventilation Systems Fresh Ventilation do not recommend or install wall-mounted sub floor ventilation products unless no other alternative is available. Wall-mounted systems have substantial limitations by design and mostly use inferior and noisy components further limiting their usefulness. When access to a sub floor area is not possible, it may be possible to install wall-mounted fans. In this situation, the limited ventilation provided is better than none. Ask us how we can help if this applies to you. Advantages of an Electronically Commutated EC Motor Energy Efficiency: EC motor efficiency is often above 90%, allowing EC fans to consume up to 70% less energy, when compared to conventional fans. Running an EC fan at 80% speed saves nearly 50% of the energy. Ease of Control: By continuously monitoring motor functions and automatically adjusting the control input, high efficiency is maintained throughout the operable speed range. EC motors are often capable of being turned down to 20% of full speed, while still maintaining 85% efficiency. Sensors that produce a 0-10V signal provide speed control without the need for a complex variable frequency drive. Versatility: EC motors are capable of exceeding rated speeds. This allows fans with EC motors to achieve higher capacity within a smaller fan package. Fan Specifications Our EC motor centrifugal fans have the following qualities: Plug and play operation in a standard power point or socket outlet. Extremely low noise during operation Can be silent at reduced fan speeds during operation Motor manufactured by Vortice in Italy 2 year warranty IP 45 protection rating. 10V (100% Speed) Maximum absorbed power: 31 W. Maximum delivery: 515 m³/h. Pressure max: 237.3 Pa. RPM: 2,030. Sound pressure Lp 3m breakout: 31 dB(A). Negative Pressure, Positive Pressure or Balanced Pressure? All of our systems are available in any of the three pressure configurations – the components don’t change, the way they are installed determines the configuration. Depending on how your sub floor ventilation fans are installed, they will either blow air into your sub floor area (positive pressure) or suck air out of your sub floor area (negative pressure). If you have two or more fans installed, it is possible for fans to both blow air in and suck air out of your sub floor area (balanced pressure). Negative Pressure Our most popular configuration. The logic behind a negative pressure system is that a greater quantity of stale air is sucked out of the sub floor area than the fresh air that is blown into it. The vacuum conditions created when stale air is continuously sucked out of the sub floor area will be filled by fresh air drawn in from outside. Importantly, moisture and musty odours can be controlled since air is sucked out at a chosen location. However, the drying performance may be slightly slower than a positive pressure configuration. Positive Pressure A positive pressure system is the opposite of a negative pressure system. A greater quantity of fresh air is blown into the sub floor area using mechanical ventilation, which will as a result force the damp air out. Positive pressure systems facilitate the drying up of damp or moist sub floor areas because dry air is constantly being blown over them. It can initially be more effective than trying to suck out moist air from damp surfaces. Caution needs to be taken to ensure that passive escape venting is sufficient for the damp air to leave the sub floor area to outside of the home, otherwise the dampness can end up rising into the home above. Balanced Pressure Your sub floor ventilation system can be configured as a balanced pressure system, but this needs to be carefully considered and understood before installation. Like any sub floor ventilation system, the key to an effective balanced pressure system is to ensure that it is installed properly. One or more fans create a positive pressure by blowing dry and fresh air into the sub floor area. An equal amount of fans work using negative pressure to expel the same amount of stale and moist air from the sub floor area. It is balanced because the speed at which the air moves into and out of the sub floor area is the same.

Super Quiet Energy Saving Sub Floor Ventilation Kits (EC Motors)

Rooms that get more sun or have a heat source are generally warmer than those without. With a heat transfer system however, you can ensure other rooms in your home are as warm and cosy as your sunlit lounge. Heat transfer systems balance the temperature in your home by evenly distributing energy from a heat source, such as a fireplace or heater, throughout your home. DVS Heat Transfer Kits While you may have a perfectly good heating source in the living area (such as a wood burner), the heat it generates does not always extend to other areas, such as the bedrooms. The DVS EC Standalone Heat Transfer System uses excess heat from your existing heating to create supplementary heating for other rooms in your home – making the best use of heat you’ve already paid for. Why DVS? DVS home ventilation systems are the most advanced ventilation systems in the Australian market. Some of the many benefits include: Made in New Zealand. German made EC motors by ebm-papst. Temperature sensors in the fan and the control panel. Custom moulded DVS diffusers that are both attractive and designed specifically for ventilation. 5 years warranty. More information: User Manual. AC Motors vs EC Motors AC motors are cheaper than EC motors but still provide excellent performance. They are very quiet during operation and move large volumes of air through ducting. They operate at one fixed speed where they are most efficient. In real world use, EC motors provide even higher air flow, are extremely quiet during operation, are capable of silent operation at reduced fan speeds, have smoother fan rotation, and consume almost no power at reduced fan speeds. EC motors have adjustable speed and are very efficient at all speeds. EC Motor Centrifugal Fans DVS' 200mm EC motor centrifugal fan has the following qualities: Variable speed 505 m³/h air flow and 10 W power usage 650 m³/h air flow and 22 W power usage 795 m³/h air flow and 40 W power usage 1,015 m³/h air flow and 84 W power usage Extremely low noise during operation Can be silent at reduced fan speeds during operation R3G220 motor manufactured by ebm-papst in Germany Custom New Zealand made fan housing 5 year warranty IP 54 protection rating. Standard Insulated Duct vs Green Insulated Duct High quality insulated duct is essential for minimising heat loss if you want your heat transfer system to work well. Despite this, almost all heat transfer systems use poor quality and poorly insulated duct, which leads many people to believe that heat transfer systems do not work. Fresh Ventilation conducted the following experiment in the Southern Highlands. The incoming air from the heat source was 32°C, the air in the roof space where duct was located was 5°C, and the transfer length was 18 metres. The air temperature was then measured at the destination. The air exiting from uninsulated duct was 16°C, a loss of 16°C. The air exiting from Rm0.6 standard insulated duct was 21°C, a loss of 11°C. The air exiting from Rm1.5 green insulated duct was 31°C, a loss of only 1°C. Standard Insulated Duct Available insulated to Rm0.6 and Rm1.0. Made in Australia. Fire rated. Complies to AS 4254. Inner core has a copper coated spring steel wire designed for applications that require less rigid insulated duct. Insulated with polyester fibre. Operating temperature range: -10°C to +80°C. Green Insulated Duct Available insulated to Rm1.25 and Rm1.5. Made in Australia. Fire rated. Complies to AS 4254. Inner core has a steel rib for strength. Inner core is not prone to glue failure. Insulated with polyester fibre. Outer jacket is reinforced with cotton for strength. Operating temperature range: -10°C to +80°C. Included Items 1 Room Kit - Suitable for Transferring Heat to 1 Room 1 x DVS 200mm EC Heat Transfer centrifugal fan 1 x White plastic DVS 200mm flat diffuser 1 x White plastic DVS 200mm egg crate grille 2 x 6m insulated duct manufactured in Australia 1 x 30m duct tape 1 x 50m hanging tape 1 x DVS EC Heat Transfer LED controller 1 x 10m Cat5e network cable 5 Years warranty Installation map showing our recommended layout. Please provide a sketch of your home layout, noting as much detail as possible: transfer heat source; transfer destination rooms; existing ceiling diffuser locations in transfer rooms; cold areas in transfer rooms; bed locations in transfer rooms; manhole locations. (Provided after purchase). Up to 30 minutes of one-on-one technical advice to help you with installing your system. (Provided after purchase). Additional quantities of individual items can be purchased in our store. 2 Rooms Kit - Suitable for Transferring Heat to 2 Rooms 1 x DVS 200mm EC Heat Transfer centrifugal fan 2 x White plastic DVS 200mm flat diffusers 1 x White plastic DVS 200mm egg crate grille 3 x 6m insulated duct manufactured in Australia 2 x 30m duct tape 1 x 50m hanging tape 1 x 200mm insulated splitter 1 x DVS EC Heat Transfer LED controller 1 x 10m Cat5e network cable 5 Years warranty Installation map showing our recommended layout. Please provide a sketch of your home layout, noting as much detail as possible: transfer heat source; transfer destination rooms; existing ceiling diffuser locations in transfer rooms; cold areas in transfer rooms; bed locations in transfer rooms; manhole locations. (Provided after purchase). Up to 30 minutes of one-on-one technical advice to help you with installing your system. (Provided after purchase). Additional quantities of individual items can be purchased in our store. 3 Rooms Kit - Suitable for Transferring Heat to 3 Rooms 1 x DVS 200mm EC Heat Transfer centrifugal fan 3 x White plastic DVS 200mm flat diffusers 1 x White plastic DVS 200mm egg crate grille 4 x 6m insulated duct manufactured in Australia 3 x 30m duct tape 1 x 50m hanging tape 1 x 200mm insulated branch 1 x 200mm insulated splitter 1 x DVS EC Heat Transfer LED controller 1 x 10m Cat5e network cable 5 Years warranty Installation map showing our recommended layout. Please provide a sketch of your home layout, noting as much detail as possible: transfer heat source; transfer destination rooms; existing ceiling diffuser locations in transfer rooms; cold areas in transfer rooms; bed locations in transfer rooms; manhole locations. (Provided after purchase). Up to 30 minutes of one-on-one technical advice to help you with installing your system. (Provided after purchase). Additional quantities of individual items can be purchased in our store. 4 Rooms Kit - Suitable for Transferring Heat to 4 Rooms 1 x DVS 200mm EC Heat Transfer centrifugal fan 4 x White plastic DVS 200mm flat diffusers 1 x White plastic DVS 200mm egg crate grille 5 x 6m insulated duct manufactured in Australia 4 x 30m duct tape 1 x 50m hanging tape 3 x 200mm insulated splitters 1 x DVS EC Heat Transfer LED controller 1 x 10m Cat5e network cable 5 Years warranty Installation map showing our recommended layout. Please provide a sketch of your home layout, noting as much detail as possible: transfer heat source; transfer destination rooms; existing ceiling diffuser locations in transfer rooms; cold areas in transfer rooms; bed locations in transfer rooms; manhole locations. (Provided after purchase). Up to 30 minutes of one-on-one technical advice to help you with installing your system. (Provided after purchase). Additional quantities of individual items can be purchased in our store.

DVS Heat Transfer Kits (EC Motors)

The Fresh Ventilation X-Stream is the perfect extractor fan solution for wet areas like bathrooms, toilets and laundries. Whether you’re a homeowner, a renter or a landlord, it’s vital to keep these areas free from mould and condensation. Fresh Ventilation’s exclusive design is based on years of knowledge, experience and trialling competing products. We use Australian made ducting and German made centrifugal fans with both AC and EC motors. The Fresh Ventilation X-Stream is available in four models, with and without run-on timers, with air flow ranging between 560 m³/h and 735 m³/h. X-Stream AC Simple and effective. This model turns on and off from a switch on your wall just like your lights. Unlike cheap and inefficient bathroom fans, which allow moist air to build up in your roof cavity causing other problems, the X-Stream AC exhausts stale air directly outside through ducting, keeping mould and moisture at bay in all areas of your home. Our centrifugal fan with an AC motor provides excellent performance and reliability. It is one of the quietest extractor fans available and comes with an IP 44 protection rating and a 5 year warranty. It extracts 560 m³ of air per hour and consumes 52 watts per hour. X-Stream AC Plus The X-Stream AC Plus includes an IntelliSwitch automatic timer which continues to ventilate the room after you leave. You can control how long you want it to run for and it will automatically switch off after this time has elapsed. X-Stream EC Simple and effective. This model turns on and off from a switch on your wall just like your lights. Unlike cheap and inefficient bathroom fans, which allow moist air to build up in your roof cavity causing other problems, the X-Stream EC exhausts stale air directly outside through ducting, keeping mould and moisture at bay in all areas of your home. Our centrifugal fan with an EC motor provides exceptional performance and reliability. The speed can be adjusted to suit air flow, noise and power consumption requirements. At maximum speed it is even quieter than the X-Stream AC. At reduced speeds it is capable of being completely silent. It comes with an IP 54 protection rating and a 5 year warranty. At maximum speed it extracts 735 m³ of air per hour and consumes 83 watts per hour. At reduced speeds these figures are lowered to 580 m³/h and 49 watts, 445 m³/h and 24 watts, and 310 m³/h and 10 watts. X-Stream EC Plus The X-Stream EC Plus includes an IntelliSwitch automatic timer which continues to ventilate the room after you leave. You can control how long you want it to run for and it will automatically switch off after this time has elapsed. Included Items 1 x 150mm AC/EC centrifugal fan manufactured in Germany 1 x White metal egg crate grille 1 x White plastic louvre grille 1 x 6m V-Flex duct manufactured in Australia 1 x 30m duct tape 1 x 50m hanging tape 1 x IS-SS IntelliSwitch automatic timer ﻿(X-Stream Plus Only) 5 Years warranty Up to 30 minutes of one-on-one technical advice to help you with installing your system. (Provided after purchase). Additional quantities of individual items can be purchased in our store. Retrofitting an Existing Hole If you have removed your old fan, please measure the diameter of the cutout hole in your ceiling. The white metal egg crate grille can be substituted with a diffuser that will cover your existing hole. Please contact us if your hole size is not listed, as we can supply a diffuser for almost any retrofit.

Bathroom Fan Kits (AC and EC Motors)

Positive Input Ventilation (PIV) Systems Positive Input Ventilation (also known as positive pressure ventilation) works as a whole house ventilation system and creates fresh and healthy living environments by supplying fresh, filtered air into a home. PIV is a highly effective cure for condensation, mould, dampness and its associated problems within residential properties. It pushes harmful air out of the home and replaces it with fresh, filtered air. PIV works by drawing fresh air in through the unit that’s installed in your roof space. This air is then filtered and gently diffused at ceiling level, creating a positive pressure within the home that forces air pollutants out through the natural leakage gaps in your home. There are several advantages to this sort of low-pressure ventilation. It ensures a constant flow of fresh, filtered air through your home, regardless of the conditions inside or outside the house. This can be crucial to prevent the build-up of moisture and associated problems, which can include the growth of mould and damp patches. A damp environment can exacerbate some health problems, such as asthma, can cause damage to your home that is expensive to rectify, and generally create an unpleasant environment. The pressurised circulation of clean, filtered, air through the house can also help to remove pollutants that enter from elsewhere in the house, as well as dispersing mustiness and odours. A PIV system can lower the humidity in the house, which can also prevent dust mite populations from thriving. This can be another benefit for children and adults in the house who have asthma or allergies. As warm air rises, roof spaces are often comparatively warm spaces, and as this air is moved by the fresh air coming in, it can have a slight but significant impact on the temperature of the house.

Positive Input Ventilation (PIV) Kits (AC Motors)

These systems can be used as an alternative to DVS Home Ventilation Systems. A permanent extraction ventilation system (PEV) extracts air from an internal space. The extracted air is replaced by fresh air from an open window, a fixed vent, or via the natural gaps/cracks in the building envelope. A permanent extraction ventilation system can be timer or thermostat controlled (AC Plus and EC Plus) and is a cheaper, less sophisticated solution for solving indoor air quality issues in spaces unaffected by draught, such as basements, walk in robes, storage rooms, linen cupboards and pantries. Permanent extraction ventilation systems are suitable for installation as follows: The metal grille can be installed in the ceiling, with the centrifugal fan located in the roof space, and ducted to outside via ducting to the plastic grille installed in an eave. The metal grille can be installed in the wall, with the centrifugal fan located in the sub floor space, and ducted to outside via ducting to the plastic grille installed in an external wall. The metal grille can be installed in the floor, with the centrifugal fan located in the sub floor space, and ducted to outside via ducting to the plastic grille installed in an external wall. The Fresh Ventilation X-Stream is the perfect extractor fan solution. Fresh Ventilation’s exclusive design is based on years of knowledge, experience and trialling competing products. We use Australian made ducting and German made centrifugal fans with both AC and EC motors. The Fresh Ventilation X-Stream is available in four models, with and without 7 day timers and thermostats, with air flow ranging between 560 m³/h and 735 m³/h. X-Stream AC Simple and effective. This model turns on and off from a switch on your wall just like your lights. The X-Stream AC exhausts stale air directly outside through ducting, keeping mould and moisture at bay in all areas of your home. Our centrifugal fan with an AC motor provides excellent performance and reliability. It is one of the quietest extractor fans available and comes with an IP 44 protection rating and a 5 year warranty. It extracts 560 m³ of air per hour and consumes 52 watts per hour. X-Stream AC Plus The X-Stream AC Plus includes an IntelliSwitch colour screen automatic timer and thermostat, which can be programmed to operate at certain times each day or when the temperature is above/below a set point. You can also operate it manually, with the ability to control how long you want it to run for before it automatically switches off. X-Stream EC Simple and effective. This model turns on and off from a switch on your wall just like your lights. The X-Stream EC also includes a 0-10V speed control device so that air flow can be precisely adjusted. The X-Stream EC exhausts stale air directly outside through ducting, keeping mould and moisture at bay in all areas of your home. Our centrifugal fan with an EC motor provides exceptional performance and reliability. The speed can be adjusted to suit air flow, noise and power consumption requirements. At maximum speed it is even quieter than the X-Stream AC. At reduced speeds it is capable of being completely silent. It comes with an IP 54 protection rating and a 5 year warranty. At maximum speed it extracts 735 m³ of air per hour and consumes 83 watts per hour. At reduced speeds these figures are lowered to 580 m³/h and 49 watts, 445 m³/h and 24 watts, and 310 m³/h and 10 watts. X-Stream EC Plus The X-Stream EC Auto includes an IntelliSwitch colour screen automatic timer and thermostat, which can be programmed to operate at certain times each day or when the temperature is above/below a set point. You can also operate it manually, with the ability to control how long you want it to run for before it automatically switches off. Included Items 1 x 150mm AC/EC centrifugal fan manufactured in Germany 1 x White metal egg crate grille 1 x White plastic louvre grille 2 x 6m V-Flex duct manufactured in Australia 1 x 30m duct tape 1 x 50m hanging tape 1 x On/Off switch (X-Stream AC and X-Stream EC Only) 1 x ST-CS IntelliSwitch automatic timer (X-Stream AC Plus and X-Stream EC Plus Only) 1 x 0-10V speed control device (X-Stream EC and X-Stream EC Plus Only) 5 Years warranty Up to 30 minutes of one-on-one technical advice to help you with installing your system. (Provided after purchase). Additional quantities of individual items can be purchased in our store. IntelliSwitch ST-CS Colour Screen Timer Six modes of operation: Timer mode ( 4 programmable 7 day timers that are settable from 1 minute to 7 days). Temperature mode (for operating when the temperature is above/below a set point). Temperature and timer mode (for combining temperature mode with timer mode). Countdown mode (a run-on timer that is settable from 1 minute to 7 days). Boost mode (up to 8 hours additional run time without affecting timer operation). Permanently on (timer override). 10m external temperature probe. Temperature measurement selectable between internal sensor and external probe. Room temperature display. Clock display. Load rated to 10A.

Permanent Extraction Ventilation (PEV) Kits (AC and EC Motors)

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