For a natural or hybrid ventilation solution in schools and other educational facilities Passivent can provide design expertise and technical support acquired over 38 years of business. Its products are designed to improve indoor air quality, thermal comfort and occupant wellbeing. Some of our products also attenuate noise.

Passivent’s Aircool® range of wall and window ventilators are virtually silent in operation and provide controlled air intake and extract in natural (and mechanical) ventilation systems, with superior thermal performance when closed. They are also available as thermal and acoustic variants which temper incoming cool air or attenuate noise.

A hybrid mixing variant of the Aircool® – the Hybrid Plus2 Aircool® – can be used in classrooms, as part of a single-sided ventilation strategy. Meeting the requirements of Building Bulletin 93 (Acoustic design) and Building Bulletin 101 (Ventilation and IAQ) it has different operational modes, dependent on the internal and external environment, and sensors which respond automatically to increases in temperature and CO2.  A boost function also maximises fresh air supply. This quiet, energy-efficient system is controlled by the Passivent iC8000 controller allowing for up to 40 individual zones to be managed.

Passivent’s SoundScoop® – an acoustic ‘room to room’ air transfer unit – can be used between internal spaces of a building to attenuate noise and enable crossflow ventilation. These patented units work well in conjunction with Passivent’s standard, thermal and acoustic Aircools providing sound reduction between noisy and quiet areas, and also providing speech privacy.

Passivent’s range of roof ventilation terminals, such as the Airscoop® and Airstract®, are ideal for larger spaces such as sports halls and atriums. They offer Class A 100% certified rain rejection (to BS EN 13030:2001) so that a building can be fully ventilated regardless of weather conditions. Available in a range of designs and sizes to suit a building’s aesthetics and ventilation requirements, they can also be colour-matched to any RAL or BS colour.  With excellent thermal and airtightness performance when closed Passivent’s terminals can also be controlled by Passivent’s iC8000 controller.

For support with your ventilation project contact Passivent on

or visit the website below

The government’s Heat & Building Strategy accepts that public sector organisations, including schools, will require new specialist skills and expertise to decarbonise infrastructure and better manage operational energy use. With around 40% of UK greenhouse gas emissions being accounted for by heating, cooling, and lighting the built environment, the government has said it is ‘essential that the public sector demonstrate leadership and drive down emissions by using credible and consistent approaches to decarbonise the public sector estate.’
Achieving net zero by 2050 is expected to come through improving building insulation, switching to low-carbon heating sources when it is time for heating systems to be replaced, implementing smart technology and installing low-carbon heating in new buildings. Schools are also expected to monitor their energy use and set targets and plans to reduce emissions over the next five years, with ‘consistent and coherent’ reporting.


Currently, the government favours air source heat pump (ASHP) based applications as the simplest and most cost-effective answer to reducing energy consumption, for less CO2 production and lower long-term operational costs. The high-temperature demands of commercial hot water systems do however curtail the current generation of heat pumps as a singular response, with existing, poorly insulated buildings further reducing efficiencies. For this reason, schools faced with delivering decarbonisation goals within the proposed next five year period will need to consider more complex hybrid systems, or if on gas, look to solar thermal as a practical way to reduce energy use and decarbonise their buildings.
Faced with varied building stock and fluctuating user demands from showers, washbasins and kitchens, as well as complex space heating demands, applications will vary dramatically across each bespoke case, making decisions on decarbonisation all the more complex and difficult without specialist support. Consulting with Adveco’s expert sales and engineering staff can help you truly understand your needs, limitations and the options best suited to your bespoke situation.

Talk to us about a free site survey, heat pumps, solar thermal and electric or gas water heating and get your decarbonisation plan on track.

Good air quality in school buildings is particularly important for children’s wellbeing.  It is known that proper ventilation is beneficial in ensuring airborne viral loads are effectively extracted, thus mitigating the risks from pollutants and pathogens, including Covid-19.  Air Vent Technology’s Infinity® range of heat recovery units is particularly suited for school installation.   Buildings are economically and efficiently ventilated, heat loss during the winter months is kept to a minimum, and they are complete with face and bypass for summer ventilation.  These low-profile units are available in 10 standard sizes with airflow up to 4.33 m3 /sec.  Options are side, or bottom access, stacked arrangement, internal or external installation and with EHB or LPHW heater batteries.  Additionally, AVT can custom design and build a suitable unit should that be required with AVT‘s Site Engineering Services offering a full installation package.   AVT’s extensive range of ventilation products include energy efficient, custom built air handling units with or without heat recovery, cabinet and twin fans, high temperature fans and emergency smoke extract units.

Tel:  +44(0)1264 356415



GEZE have completely upgraded their control panels for smoke and heat extraction systems. Control units are the brain and the power supply of the smoke and heat extraction systems in a building.


The new THZ N4 and THZ Comfort replace the previous versions and offer a more powerful power supply, increased connectivity and easier installation.


In addition to extracting smoke from staircases the THZ N4 and THZ Comfort can also be used for smaller smoke and heat extraction systems such as a foyer and are suitable for use on new buildings and retrofitting. In large event venues with smoke extraction installed in the roof or with a machine smoke extraction system the THZ N4 is particularly suited for operating fresh air drives such as GEZE’s RWA K 600.


Both versions have received a hardware and capability upgrade; the more powerful power supply enables an increased output of 4.5A from the 3.4A in previous models which broadens the panel’s specification possibilities and allows more drives to be connected.


The motor line connection has also been upgraded to a spring level motor terminal to allow for easier installation and both can now be interfaced with the GEZE ST 220 service terminal for quick and easy commissioning.


Both control panels have a compact and attractive design; the THZ N4 has a plastic housing in white whilst the THZ Comfort has a robust metal housing in orange.

To find out more about the THZ N4 or THZ Comfort visit GEZE’s website or for a brochure email

For more information on GEZE’s comprehensive range of door and window control products visit

Hot water specialist Adveco introduces the FUSION FPH-S range of low carbon, all-electric, packaged hybrid hot water systems. Perfect for refurbishment projects in smaller schools, or for new estate buildings, FUSION harnesses Adveco’s FPi32 Air Source Heat Pumps (ASHP), a high-pressure ATSH calorifier with electric immersion, controls, and metering to provide a reliable, high-temperature, sustainable and cost-effective hot water system.


“For schools with small to medium basin and sink led hot water demands and a desire to embrace a more sustainable operating model, the FUSION FPH-S range provides a single, easy to accommodate, highly effective response,” says Bill Sinclair, technical director, Adveco. “By choosing one of these packaged hybrid water systems you gain optimum efficiencies, lower your carbon emissions and can be assured building regulations are being met for your project.”




The FPi32 ASHP is specified to supply a working flow of 50°C for system preheat throughout the year, even when ambient air temperatures drop as low as -25°C. The physical design, dedicated controls and integrated metering ensure the ASHP preheat, and immersion work seamlessly to deliver the highest operational efficiencies. This enables FUSION to make the greatest gains possible from the heat pump, even when ambient temperature and system demands fluctuate. These gains offset much of the direct electrical energy usually required, delivering a 53% carbon emissions saving and helping control the operational costs of providing daily hot water.
FUSION is available in 16 pre-specified variants with 6 or 10 kW preheat and 9 or 12 kW electric top-up, with capacities ranging from 200 to 500 litres all rated at 10 BAR for high-pressure applications. Able to meet a range of continuous capacity hot water demands from 257-377 litres/hour makes FUSION highly adaptable for a wide range of education buildings.

Three schools in Slough have become the first in the United Kingdom to have ‘anti-Covid’ indoor air technology installed in their buildings.

The Langley Academy Primary School, the Langley Heritage Primary and The Langley Academy, a co-educational secondary school, had a new ‘revolutionary’ air cleaning system put in before Christmas which uses Needlepoint Bipolar Ionisation (NPBI) tech that has been proven to kill coronavirus.

NPBI is an ‘active’ air cleaning system and works by neutralising Covid particles suspended in the air or on a surface in the room by introducing air cleaning ions into the airstream. An ion is any atom or group of atoms that bear one or more positive or negative electrical charges.

Indoor air quality specialists Clenzair installed a range of different NPBI products in the three schools, including free-hanging fans in the ceiling and in the duct mounting and air conditioning systems. These were positioned in communal areas, such as main halls, sports halls, reception areas, offices, and staff rooms. Clenzair also provided a number of portable ‘plug and play’ devices for teachers to be able to use in classrooms.

Tests by independent laborarites against a live strain of SARS-CoV-2 have proven that NPBI can neutralise Covid-19, as well as other pathogens such as MRSA, bird flu, swine flu, Ebola and E. Coli.

The Arbib Education Trust, which supports the schools, says it made the decision to install the air technology in order to safeguard its staff and pupils against Covid-19. The schools collectively have over 2,500 pupils and 300 staff.


Executive Principal Rhodri Bryant at The Arbib Education Trust, said: “We have a duty to safeguard the health and safety of our staff and pupils. We believe Clenzair makes the air pure and if we’re all breathing in healthier air and it neutralises Covid, as well as other viruses, then that is a very positive thing for our schools.

“I think it will give staff the confidence that we have taken such measures to help protect them and give parents comfort that their children will also be going to a school that that is doing all it can to keep them safe.”


With heating being a school’s primary use of energy, leading independent building services specialist Gilberts is taking steps to help the educational estate optimise its carbon footprint.


The move coincides with updates to the required technical standards and performance criteria for schools’ mechanical services, within the Department for Education’s Facilities Output Specification(1). The updates are encouraging specifiers to consider utilisation of heat pumps as the most efficient way of warming, ventilating and cooling the building. When powered by electricity from a renewable source, with their high COP verses oil, gas or direct electrical options, heat pumps offer the school long-term benefits and lower energy bills.

However, it is important to ensure the heat pumps are installed with support building services systems that can work efficiently with them, so the school has a healthy internal environment for the pupils and staff.

Gilberts’ MFS hybrid ventilation units do just that.

Integrated into the heat pump system, Gilberts’ MFS can utilise the warmth brought into the school from the ground or air to maintain a comfortable internal environment in each individual classroom, year round, appropriately balancing warmth and ventilation as needed.

Typically, LTHW (low temperature hot water) is circulated around the school from system boilers at mean temperatures around 50-60°C. With heat pumps, the water is cooler at around 35°c for heating but there is also the option of 9°C for “free cooling”. Gilberts’ MFS has been designed such that these options can be used to heat the classroom during the cold weather or temper it during the warmer months.

Gilberts’ MFS hybrid, stand-alone ventilation system is recognised as being fully compliant with Environmental Funding Agency, Facilities Output Specification and BB101 requirements for school ventilation.

Strategically located at high level through the external façade, the unit efficiently ventilates each individual space with no need for ductwork, plant, fire dampers, associated penetrations into adjoining spaces (a growing consideration for schools to minimise Covid) and building work. The core MFS appliance provides natural ventilation and uniquely blends the incoming fresh air with the warmth from the exhaust air.

MFS can also be configured to run on 100% fresh air, using the coil to temper the air to provide Covid compliant ventilation without compromising the internal temperature.

Just 2 Mistrale MFS128’s or 1 MFS256 single-sided units will ventilate a standard 32 person classroom, achieving the 8 litres/sec/person fresh air required and within the particulant levels for Covid currently set by the Department of Education Building Bulletin (BB101) and PBSP guidelines. It brings compliant control over temperature, pollutants and CO2 levels and maintenance of a comfortable internal environment for occupants.

There is no need for radiators nor all their associated ancillary capital expenditure, installation, operating and maintenance cost. As the heat is supplied at high level, the risk of low surface temperature (LST) issues is also eliminated.

As a solus ventilation unit, MFS costs as little as £5/classroom/year(*) to operate. Using it as the means of classroom heating adds just £2.19/ classroom/year(*). Energy consumption and thus energy costs are reduced. Schools account for around 2% of UK greenhouse gas emissions, roughly the same as all the energy and transport emissions of Manchester, Newcastle and Bristol combined; this is equivalent to 15% of the country’s public sector emissions(2). Energy is also a school’s second biggest expenditure (after salaries) according to the Institute of School Business Learning(3): improving energy efficiency helps deliver best value against budgetary considerations.


Roy Jones, Technical Director @ Gilberts, observes, “Throughout our 60 year history, we have been at the forefront of innovative ways to make a positive difference to our use of energy while creating the best internal environment for building occupants. Evolving our MFS unit to include capability to work with heat pumps is a natural step on that path. It’s a win-win for any school in making a positive contribution towards reducing its carbon footprint.”


MFS is just part of Gilberts’ diverse range of ventilation systems, grilles, louvres and diffusers which, coupled with its in-house expertise, have established it as the leading independent supplier of air movement solutions in the UK. Family-owned, Gilberts is unique in the sector in its ability to design, engineer and supply its products with all processes undertaken in-house at its 85,000ft2 head office and manufacturing facility in Blackpool. Its Technical Director Roy Jones is also a member of TAPAS (Tackling air pollution at school).





Hassan Sherbaz, Solutions Architect at Connexin, explains how high CO2 levels can lead to disruption within schools and how smart monitoring solutions can help them make informed decisions about ventilation across their buildings to protect students.






The Department of Education recently made a major announcement that will help enhance schools’ and pupils’ safety. Within the next term, the Government will make 300,000 carbon dioxide (CO2) monitoring solutions, roughly one device for every two classrooms, available to the education sector to improve ventilation and reduce the risk of COVID-19 outbreaks.
This policy will be welcomed by many and whilst being an ambitious undertaking, it is a necessary one that will ensure schools’ premises with zones of poor ventilation are identified and the appropriate improvements are applied.
Due to the pandemic, ventilation has become an important topic within education. However, whilst COVID-19 has accelerated the focus on ventilation, it is not a new problem for schools. Research has found that poor airflow can lead to a number of problems within educational buildings, including causing drowsiness and headaches, reducing productivity, increasing the rates of absences and inflicting building damage.
Whilst ventilation has been well managed in the summer months by keeping windows and doors always open, winter is coming and schools need to find the right balance between ensuring temperature and humidity conditions are acceptable and comfortable for students. This is where CO2 monitors will have a key role to play.
The question for schools now is how can they effectively use CO2 monitors to help them improve ventilation and what solutions should they be looking to adopt?
Firstly, by monitoring CO2 levels throughout the day, schools can identify which areas require the windows and doors to be opened ahead of their unhealthy peaks, whilst still maintaining comfortable temperature and humidity. The preferred level of CO2 is currently 1000 parts per million (ppm), with an acceptable baseline of up to 1500ppm, and by ensuring classrooms remain within these levels, will guarantee there is sufficient ventilation to limit the spread of COVID-19 so that students have access to cleaner air.
However, installing and managing multiple monitors across different rooms will be a costly and time-consuming process that may disrupt pupils’ lessons. If schools want to find an effective way of implementing CO2 monitors, they need to be looking at smart technologies that are agile, mobile and provide them with vital data.
For example, by using battery powered CO2 solutions that run using a low-powered network, schools can save money by reducing the amount of monitors they need to install as these can be moved about to different rooms. Once a particular schedule for opening windows is established for certain zones, these devices can be placed in other at-risk areas, allowing schools to gain a full insight into their whole building without needing to monitor multiple, fixed devices. By monitoring CO2 levels throughout the day in this way, they can identify areas which require the windows and doors to be opened ahead of their unhealthy peaks, whilst still maintaining comfortable temperature and humidity.
At the same time, by using smart monitors, schools also have the added benefit of being able to gather and utilise data that can help them make long-term improvements to their infrastructure. These devices are constantly collecting information on the CO2 levels of the rooms they operate in, which can help facility managers identify at-risk areas to know whether a regular schedule of opening and closing windows will be sufficient to meet the required standards. If these at-risk areas can’t be managed safely, a business case can be built to retrofit or upgrade the ventilators and solutions can be implemented in specific areas, rather than unnecessary changes being made throughout the whole school, which again can prove costly and time-consuming.
The Department of Education has taken an important step towards improving students’ and staffs’ health and wellbeing in our schools through providing CO2 monitors. The Government and educational establishments need to make the most of this opportunity and by implementing smart solutions, they have a chance to create safer learning environments which also provide long-term, cost-effective solutions for everyone.


Good air quality in classrooms is good for academic performance as well as the safety of occupants.

Recent events have focused even more attention on indoor air quality and while some new technologies have emerged, the fundamental approach of bringing more fresh air into buildings is still the most effective way to improve indoor air quality. Improved monitoring and better controls have provided more opportunities to optimise energy efficiency while providing better indoor air quality.

Fan Convectors with fresh Air introduction – Dunham-Bush offer a range of products from Series AM fan convectors equipped with fresh air dampers and CO2 controls to networks of fan convectors with additional features.

The Smart-Vector range of fresh air fan convectors offer further innovative options to the client, ensuring recommended indoor air qualities (IAQ) are achieved. Smart-Vector’s provide demand-led tempered fresh air and heating using a stand-alone controller with local setpoint adjustment. Multiple heaters can be operated in master / slave configuration to ensure effective control in larger spaces.

There are five models in the Smart-Vector range: floor standing front outlet models SV19 and SV22; top outlet model SV88; high wall model SV53; ceiling mounted SV80. With nominal outputs ranging from 1.4kW to 14.6kW, comfortable conditions in the space can be maintained. All units incorporate variable air volume (VAV) control function, to maintain design conditions.

Improved Indoor air Quality with Heat Recovery – The next step in the improvement of indoor air quality for schools can include heat recovery, not heat recovery by mixing fresh air with room air and exhausting a mixture of both but the use of a high efficiency metal heat exchanger, a design which ensures excellent specific fan power and very low noise in a compact unit.

The Classmaster heat recovery ventilation unit has been developed specifically for classrooms and along with all the VHR range of units now available from Dunham-Bush, fully complies with the latest BB101 and BB93 guidelines. With airflows ranging from 50 to 600l/s, Classmaster delivers the very highest standards of air quality.

Key features include a patented variable air mass flow heat exchanger, which maintains thermal efficiency at both 100% and 50% airflow. The unique configuration of low resistance heat exchangers, used in conjunction with EC fans, delivers minimal sound levels and excellent heat reclaim efficiency while monitoring and controlling levels of CO2 in the space.

Classmaster units have the option of ePM2.5 (F7) filters for inner city installations. With a height of only 300mm, Classmaster 260 can be installed within a ceiling void or surface mounted. Space heating coils and frost coils are also available for the Classmaster range.

For a natural or hybrid ventilation solution in schools and other educational facilities Passivent can provide design expertise and technical support acquired over 35 years of business.
The Hybrid Plus2 Aircool® is just one of the products in Passivent’s education range.  Not only does this system improve indoor air quality, thermal comfort and the wellbeing of its occupants, it also meets the requirements of Building Bulletin 101 “Guidelines on ventilation, thermal comfort and indoor air quality in schools” and Building Bulletin 93 “Acoustic design of schools – performance standards”.

Most commonly used in classrooms the Hybrid Plus2 Aircool® is a quiet and energy-efficient hybrid ventilation system requiring minimal maintenance. It has different operational modes that are dependent on the internal and external environment. Sensors respond automatically to increases in temperature and CO2 and a boost function maximises fresh air supply.  Suitable for a wall or window construction, the Hybrid Plus2 Aircool is lightweight and modular in design and can be ceiling-mounted or ducted within a ceiling void.  The system is controlled by the Passivent iC8000 controller allowing for up to 40 individual zones to be managed.
Passivent’s range of roof terminals are also extremely popular in the education sector and are ideal for larger spaces such as halls and atriums. They offer Class A 100% certified rain rejection (to BS EN 13030:2001) so that a building can be fully ventilated regardless of weather conditions. BRE tested, they are resistant to continuous wind loads at 51 m/s and motorised base dampers control the airflow with excellent thermal and airtightness performance when closed.  Available in a range of designs and sizes to suit a building’s aesthetics and ventilation requirements, they can also be colour-matched to any RAL or BS colour.  Installation is made easier by their lightweight construction and integral sub-base.


As with the Hybrid Plus2 Aircool the roof terminals are automatically controlled by Passivent’s iC8000 controller which monitors the indoor environment through CO2 and temperature sensors. BACnet compatibility also enables communication between the controller and the building management system.
For further information or support with your natural ventilation project contact Passivent on 01732 850 770, email or visit the website.