Adremit Ltd

Air purification, heating, cooling and dehumidification are what Puravent is all about and in the following paragraphs we have summarized some of the ranges that we supply. More than merely equipment suppliers we are problem solvers, helping our clients find the right solutions to heating, cooling, air purification or drying issues.

Have scroll down the listing below to get a flavour of what we do best.

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  1. Rectangular Ducts - Standard Sizes and Ancillaries
    22 December 2020

    Why Rectangular Duct Rather Than Round Duct?

    Rectangular duct is often the ducting format of choice when installation space is tight. Where a volume of air needs to be moved and you have a rectangular hole to duct it through, the rectangular duct is the space effective solution.

    But there is another consideration beyond space. Whereas an unusual duct size might at first sight be the best use of space; it is also worth appreciating the array of standard ancillary equipment that can be connected to the more standard rectangular duct sizes.

    What Is 'Standard Size' Rectangular Duct?

    The trouble with ducting is that, once formed, it takes up a lot of storage space and therefore pre-formed ducting is not something that sits in large quantities on a shelf waiting to be sold. Most ducting is made to order. Rectangular ducting can in fact quickly and easily be folded to any size, within the limitations of the equipment deployed to make it, and 'Mez' or 'Doby' flanges are easily fitted to each end.

    However if there is a standard it is that most catalogue information about rectangular duct recognises height and width variations in 50mm and 100mm increments. Therefore 500 x 300mm would be considered a standard size but rectangular duct measuring 467 x 932mm would not.

    For the full article go to

    Rectangular Ducts - Standard Sizes and Ancillaries
  2. UVC for HVAC applications – Knowhow for treating COV-2
    18 November 2020

    The topical background to using UVC for HVAC systems is that with the onset of cooler weather the widely recommended option of supplying 100 % fresh air ventilation in order to make buildings safe from the COV-2 threat is looking increasingly expensive. That fresh air is going to need a huge amount of heat to maintain some semblance of comfort for the occupants.  Air purification using UVC is another option to make those buildings safe and it does not require heating masses of fresh air.

    The applications for UVC air purification fall into a number of groups. There are many applications in buildings that do not have any form of mechanical ventilation, which in the scheme of things are older buildings, and smaller buildings, possibly containing offices and meeting rooms of various types.

    Fopr the full article go to......

    UVC for HVAC applications – Knowhow for treating COV-2
  3. Selecting Electric Industrial Heaters
    4 November 2020

    The season is turning and your industrial work space is getting colder. There is no mains gas supply and the only credible option is some electric industrial heaters.
    We all know that as a source of heat, electric is more expensive to run than heating from mains gas, so it is arguably even more important to get the design and selection of electric industrial heaters right in the first place. We have years of experience that can help in the details but before you even get to that stage we recommend considering the following simple questions in order to narrow down the vast array of products that are available;
    *What do you need electric industrial heaters for?
    *Do you need to use electric industrial heaters for the whole building or just a bit of it?
    *Radiant electric heating or electric space heating?
    If you need help give us a call on 01729 824108 or email us on

    To read the full article go to

    Selecting Electric Industrial Heaters
  4. Covid-Safe Ventilation Of Buildings Vital For Return To Work
    22 July 2020

    As the ‘Lockdown’ is eased and staff return to workplaces there is an increased realisation of the need for adequate ventilation not only for worker and customer comfort, but also to minimise transmission of infectious diseases, including covid-19.

    Covid-Safe ventilation of buildings is now understood to be vital to getting economic productivity growing again.

    By ventilation, we mean the replacement of stale, and possible contaminated, air with fresh air from outside the building.  Although Covid-19 is the current issue, it is the same with any airborne viral contaminant. The air in the building is a potential conduit for infection from the infected to the uninfected. Continuous fresh air supply has the effect of diluting the viral concentration in the air. Buildings that are not ventilated enable the viral concentration to build over time.

    Understanding that there is a need for Covid-Safe ventilation of buildings, the UK Health and Safety Executive (HSE) have issued Guidance on Ventilation and Air Conditioning during the Coronavirus outbreak which includes as its opening paragraphs...follow the link for fuill article...

    Covid-Safe Ventilation Of Buildings Vital For Return To Work
  5. Puravent welcome a new range of UVC Air Purifiers
    24 June 2020

    With current global pandemic causing a degree of mayhem in all markets it is perhaps no surprise that it is causing rapid changes in the air purification market. UVC air purifiers have up until 4 months ago been considered a bit niche particularly in Europe. Now, thanks to Covid -19, UVC air purifiers find them selves in the main stream.

    Puravent has been in the UVC air purification business since we started trading in 2003.  Our logo and name was even designed from the outset to reflect this specialism. Given our long knowledge the sector we are have always been fussy about what UVC air purifiers we offer to our customers.

    However with the Covid 19 situation it became clear that we needed to widen our offering. The good news is that there seems to a plethora of new products that have arrived on the market in the last 3 months so there was a lot of choice. The bad news was that the vast majority of these product ranges were riddled with rookie design flaws and peddled with misleading sales literature. It has been a wheat from chaff exercise.  We have sorted the wheat from the chaff..full story



    Puravent welcome a new range of UVC Air Purifiers
  6. HEPA filter & UVC - A combination or a choice?
    16 June 2020

    The Covid-19 peak appears to have passed and whilst there may be subsequent outbreaks we are encouraged to return to work and to reopen the economy. This has prompted employers across the country to investigate measures to make the work places safer. The purity of the air circulating around building ventilation systems and delivered into occupied spaces is now understood to be an important aspect of workplaces safety. Here we take a closer look at the choice between retrofitting HEPA filter and UVC to building ventilation systems, or to use one of the other of the technologies to ensure that air supplied into occupied spaces is safer.

    This is an in-depth study of the pros and cons of the different technology combinations. To read the full article go to...



    HEPA filter & UVC - A combination or a choice?
  7. Coronavirus infection control
    17 March 2020

    Extraordinary circumstances push me to be blunt in this blog, indeed far more direct than I would normally be comfortable with, so before you start muttering about Puravent jumping on a bandwagon and milking what is an increasingly alarming public health situation you might want to consider that Puravent has been operating in the field of air purification since 2003 and has been supplying Sanuvox equipment since 2006. It is something we are experts on and something that others need to understand a whole more about in order to slow the spread of Coronavirus Covid-19.

    As we look down the barrel of national lock down, let me quickly 'cut to the chase' read the full article go to

    Coronavirus infection control
  8. Are you Wasting Heat and Energy?
    4 February 2020

    Investing in destratification fans pays back instantly in terms of worker comfort also pretty quickly in terms of £££s as its puts an end to wasting heat and energy. Destratification fans can be retro-fitted to almost every workplace with immediate benefit.

    To view the full article go to

    We have hundreds of heating and ventilation options available on our website so if you require any assistance please do call us to discuss your requirements on 01729 824108. Alternatively email through your enquiry to or follow us on Facebook or Linked In

    Are you Wasting Heat and Energy?
  9. Air Curtain Applications
    8 January 2020

    An air curtain is a continuous stream of air blown across a doorway giving - Heat loss prevention in winter; Heat gain prevention in summer; Exclusion of fumes, dust, flying insects, odours, smoke. Door switches turn on the curtain whenever the door is not closed maximising operating efficiency with zero impact on movement. Air Curtains are available Unheated or heated as required. Heated options are powered either by electricity, circulating hot water or gas. Puravent's complete offering runs into hundreds of options so if you require any assistance please contact us. To view the full article go to ...or to discuss your specific needs email us on or phone us on 01729 824108

    Air Curtain Applications
  10. HVLS Fans For Cooling in Buildings
    16 October 2019

    The remarkable thing was that when I visited the factory making HVLS (High-Volume-Low-Speed) destratification fans in Italy it was a warm day. It was 20 minutes into the journey with the air conditioning running at full blast that the car came down to a comfortable temperature but all day inside the factory it had been cool and refreshing. Hot outside, yet cool inside. It had been a good day - learning more about HVLS fans and discovering the nuts and bolts about apparent temperature. Moving say 850,000m3/hr of air aught be massively noisy and I fully expected something to fill my ears. I listened, I felt the refreshing wash of air movement, and I think I detected a faint hum. My host said that noise was coming from the factory next door. Not convinced, I ambled across the factory floor towards the back wall adjacent to the next door property and right enough it was the factory next door. Of the gently sweeping HVLS fan above my head I heard diddly squat. To read the full article go to email us at or call us on +44 (0)1729 824108

    HVLS Fans For Cooling in Buildings
  11. Intrinsically safe Ventilators
    26 September 2019

    Intrinsically Safe Ventilators are ideal for work in confined spaces as well as in association with welding, concrete cutting, demolition. The same equipment may also be used during remediation work following flooding to dry out buildings or simply provide fresh air to work areas as needed.
    Puravent’s range of 'Clustajet' Intrinsically Safe Ventilators is as safe as it gets. With capacity ranging from 765 to 5,270m3/h, no moving parts or electric motor and driven by compressed air, they are ideal for use in confined spaces, and in damp or wet locations. These intrinsically Safe Ventilators range in diameter from 4″ to 12″.
    Not only are they dramatically safer than ventilators with motors they also out-perform them in terms of air flow for given size.
    The Clustajet units are generally used to extract air from confined spaces to allow fresh air to replace the extracted air, and where there are duct runs of more than 25m, we recommend a unit for each 25m of ducting.
    With no moving parts to cause sparking, these units are safe for use in problem applications, such as with air laden with dust or with solvent vapours.
    Puravent’s ‘Miniveyor’ Ventilators extends the operating range to 7,500m3/h. The VAF-300 is the ideal in confined spaces or in zones where use of electricity is forbidden. The double wall construction protects the inner casing giving extended product lifetime. The ventilator bodies are made from a dual wall polythene rotational moulding allowing it to withstand the knocks normally found in industrial use – a common cause of failure with traditional metal fans.
    It is built to provide maximum power where it is needed and is the ideal confined space exhaust fan for welding, concrete cutting or demolition. It is also a great blower during remediation work following flooding to dry out buildings or simply provide fresh air to the work area when needed.
    It works on positive and negative airflow and is at home either extracting dust and fumes or blowing clean air into a workspace. In fact whatever the industry you work in whether it is ship repair, boat building, construction, construction equipment rental, mining or auto engineering the Miniveyor range is ideal.
    The high pressure capability of this fan make it very capable of use with up to 3 lengths of our 7.5m anti-staticflexible ducting.
    For further information and/ or help in sizing, please email us at or call us on +44 (0)1729 824108

    Intrinsically safe Ventilators
  12. Heat stress in poultry – What can you do?
    25 September 2019

    On a hot day the roof of a poultry house can rise to 60°C due to the combined effects of the sun on the outside and rising heat from the poultry on the inside. If the body heat of a bird rises from 41°C (normal) to 45°C the bird will die due to  Heat Stress.

    Heat stress in poultry is set to become a more frequent and more severe problem and natural ventilation is not adequate . It is important under extreme conditions to turn over the whole air volume of the shed regularly and also recirculate air within the shed when internal air distribution is poor. To view the full article go to...

    ...or to discuss your specific needs email us on or phone us on 01729 824108

    Heat stress in poultry – What can you do?
  13. Expanded range of Evaporative Coolers from Puravent
    11 June 2019

    Puravent now have a full range of fixed and mobile Evaporative Cooling systems available for the industrial, commercial, retail and domestic markets. The smallest in our range are ideal for use in the home.

    Evaporative Coolers are suited to environments which cannot be sealed or where there is a preference for ‘Fresh’ air rather than recycled air.

    'Fixed' Evaporative Cooling systems, draw air from OUTSIDE and pass it through a recirculating ‘curtain’ of water as it enters the building. A proportion of the cascading water evaporates into the air stream providing cooling in the same way as sweating cools humans and animals. Internally the cooled air is then ducted to the required places. The remaining cascading water extracts an exactly equivalent amount of heat from the air. As a result the properties of the air stream are converted from warm/dry to cool/moist.

    Mobile Evaporative Coolers draw air from INSIDE the building but the process is exactly the same with the air passing through a water curtain to be cooled. A Mobile Evaporative Cooler will generally incorporate a dedicated water tank and pump. No ductiong is required for mobile systems as they will target the required area directly.

    In either case hot, humid air must be exhausted from the building via ventilation points such as windows or open doors in order to prevent the build up of moisture inside the cooled environment.

    'How it Works' video link -

    email us at or call us on +44 (0)1729 824108

    Expanded range of Evaporative Coolers from Puravent
  14. New HVLS Destratification fans introduced to UK
    29 May 2019

    Puravent first introduced EVEL’s HVLS (High-Volume, Low-Speed) large industrial Destratification fans to the UK market in January 2019. This range complements the Puravent’s existing highly regarded offering of Destratification and Air-Moving equipment for the retail and commercial markets.

    Manufactured in Italy these 5-bladed fans with diameters ranging from 2.5 to 7 metres can move as much as 850,000m3/h of air while just over 0.5kW.

    In April the first UK sales were achieved to a Norwich based manufacturing company specialising in production of precision-engineered mould, die and press tooling for the plastics, composites and metals industries. The fans are installed in a factory area where the precision equipment is manufactured.

    5 x 4000mm diameter aluminium-bladed fans, each covering a floor area of 180m2 and moving 350,000m3/h of air are installed at 7m above floor level and operate at only 100rpm giving exceedingly quite operation (<55dBa).

    The destratification fans take in the warmer ceiling air and transport it to the floor in a slow-moving column to create a better working environment and greatly reduce total energy consumption. In winter the most significant benefit is a considerable reduction in the cost of heating to create the optimum working/storage environment. During summer months HVLS destratification fans provide low-cost ventilation, reducing or eliminating the need for air conditioning.

    email us at or call us on +44 (0)1729 824108

    New HVLS Destratification fans introduced to UK
  15. Heating Industrial Workplaces
    7 December 2018

    The temperature of heated industrial workplaces has a bearing on some aspects of health and safety, but also on productivity, the integrity of the building, and indeed, whats inside it. There is no law regulating workplace temperatures, however it is argued that productivity peaks in a setting between 16°C and 19°C.

    Do you need help achieving an optimum temperature? Do you know what type of heater is best suited to your application? There is quite a range out on the market suited to certain needs and environments.. To determine what type of heater, or what size and quantity is needed, take a look at our blog and website for further information, or contact our office to get personalised help for your workplace.

    Heating Industrial Workplaces
  16. Confort Cabinet Heaters Evolve
    7 December 2018

    Introducing to the market, Broughton's new FireFlo FFHT32 industrial ductable fan heater. This heater is capable of ducting up to 10m and delivering high volume airflows with a temperature lift of 75°C. Built to withstand the knocks of day to day site use, the FFHT32 is ideal for use in factories, spot heating applications, and events.

    With a high temperature lift the FFHT32 is ideal for pre-heating of raw materials before handling and use in production processes. In these type of operations it is perfect for delivering and circulating warm air between and around the containers of the raw materials, eliminating the need for heating belts and the associated wires trailing around the room and less work on handling the drums. In addition, production lines and drying tunnels that cure and dry materials (such as paints/adhesives/inks), could benefit. The small, portable, yet durable design allows it to adapt to a wide range of applications making it a versatile heater to enter the market.


    Confort Cabinet Heaters Evolve
  17. Oscillating Wall Fans – keeping everyone cool
    7 December 2018

    We all can appreciate a bit of air movement in a warm environment, but as it turns out Giant Galapagos Tortoises also like some air movement to keep their living environment fresh. Dirk the 70-year-old Giant Galapagos Tortoise is the largest of his kind in the UK. He happily resides at Crocodiles of the World in Oxfordshire, amongst other smaller reptiles, mammals, exotic birds, and 17 of the world’s 24 species of crocodiles.

    Dirk and the other Giant Galapagos Tortoises at Crocodiles of the World have Cyclone oscillating wall fans to ensure that the there is constant air movement round their enclosure which helps prevent stagnant air pockets, damp and rot. The spectacle of the crocodile feeding time is an understandably popular one and at busy times visitors may have a few minutes to wait before seeing Hugo and the other crocodiles. Luckily the waiting area for seeing the crocodile feeding has a number of Cyclone oscillating wall fans gently moving the air around to help visitors keep cool for those few moments of waiting.

    Take a look at our range of Cyclone fans. When they are put in key positions to blow over crowded areas, or work stations, they can bring welcome relief to people who would otherwise be wilting in the heat. We find that they are very popular in shops, health clubs, gyms, and as we have recently discovered, in animal enclosures!

    Oscillating Wall Fans – keeping everyone cool
  18. Greenhouse cooling fans
    18 May 2018

    The King helecentrifugal fan is an excellent solution for ensuring great air movement and cooling in commercial greenhouses. It creates that all important air flow at floor level though the leaves of the plants, which minimises plant losses through foliage rot. When the greenhouse roof vents are open these fans also pull in huge volumes of fresh outside air and exhaust warmer air through open side vents and doorways. In the cooler months, when the vents are closed, the air flow past the glass on the roof picks up the warmth from morning solar gain to spread the heat into the general airspace, lowering heating costs by tripping the thermostat to switch off sooner in the mornings. See more:

    Greenhouse cooling fans
  19. Basket Fan
    18 May 2018

    This is a basket fan. 'What on earth is a basket fan?', I hear you ask. They are very useful machines for moving air in large buildings such as warehouses, greenhouses, livestock buildings, factories and swimming pools. They are generally hung in an array to move air above the occupied level to help to mix the air, induce ventilation through the buildings openings, and to prevent stagnant air pockets from forming. Air that is moving feels cooler and fresher, but moreover, it helps to prevent damp areas and the airborne infections that thrive in these environments. In livestock buildings and greenhouses, this air movement is vital to ensuring that air borne diseases are minimised. See more:

    Basket Fan
  20. V flo fan
    18 May 2018

    In our ventilation 'tool kit' V-Flo fans are a very useful item. Occasionally we get customers with applications that require an air movement pattern that is even and covers a wide area. Such applications include poultry sheds, commercial greenhouses, where the wide reach of the air stream that is deflected from the conical upper plate is really useful and covers a big area cost effectively. We also use them for more quirky applications such as in food product drying rooms. In a closer density of deployment they can put a lot of air movement into a room, leaving no dead spots, and promoting a far quicker product drying process. See more:

  21. Wood Fired heaters
    18 May 2018

    It's got a lot more output than the sort you put in a house and it features a piped heat exchanger above the combustion chamber. The fan on the side of the unit blows air from the room, through the pipes and the heated air comes out the opposite side. The warm air can be ducted to areas in the building where it is most needed. In 50kw and 100kw sizes these heaters are ideal for use in factories and large workshop based businesses which generate waste wood. Heat the workplace and use waste wood product. Its almost too good to be true...but it is'nt. See more:

    Wood Fired heaters
  22. Wall mounted fans
    18 May 2018

    In an industrial or commercial space, the average plastic/ chrome plated 12"Ø fan just won't cut it. 'Large' and 'robust' is the key word you're looking for when finding a solution for your application, such as factories, or large retail or commercial spaces. The Cyclone wall mounted fans come in the sizes 18", 20", 26", and 30" Ø. With an airflow capacity ranging from the smallest Cyclone 45T's output of 84m3/m, to the largest Cyclone 750W's output of 302m3/hm, they are ideal for any general ambient air movement requirement. Each fan comes with a 3 speed speed control setting, and 90° oscillation feature for wider coverage. Speed is controlled by pull cords on the 45T and 50W, and control switch on the 650W and 750W. They are easy to install and are held by a strong, robust wall mounting bracket. See more:

    Wall mounted fans
  23. Trion T-Series
    18 May 2018

    The motorised Trion T-Series units are ideal for the removal of 'fugitive' smoke or oil mists. Local extract ventilation systems are never 100% effective and over time the ambient air in metal working and machine shops can become laden with smoke or oil mist. By cleaning and recirculating the air inside the building, these motorised T-Series air cleaners have the ability to reduce energy costs by not having to exhaust conditioned air to the outside. The T-Series machines are electrostatic air cleaners. This means that the particles entering the unit are given and electrical charge in an ionising section.

    The charged particles then pass into a collector plate section made up of a series of equally spaced parallel plates (collector cells). Each alternate plate is charged with the same polarity as the particles, which repel, while the interleaving plates are grounded, which attract and collect the contaminants. Some less viscous contaminants such as oil mists can drain off once collected, whilst others typically smoke particles tend to form a crud, which needs to be periodically cleaned from the collector plates.

    The cleaned filters are then put back in and the unit put back to work once again. Cleaning the filters and collector cells is a much more cost effective solution, than is typical in other machines where filters need to be replaced. See more:

    Trion T-Series
  24. Wall Mounted Monoblock Air Conditioner
    18 May 2018

    Little by little, these machines are becoming the cooling solution of choice for single rooms such as hotel rooms, bedrooms, conservatories etc. Being monoblock means that the 'condenser' part of the system is not a separate box placed outside, instead both the condenser and the evaporator are inside the box and the unit is fitted inside the room to an external wall. The only evidence on the outside is a couple of small round louvers on the wall marking the ends of the ducts that come from the unit inside to the external environment.

    This range is from Unico and although the range has a number of sizes up to 10500 btu, there is usually a model to suit the vast majority of single room applications. Many of the models available are also heat pumps meaning that as well as being the source of cool air in summer, that they are also the source of remarkably effective and efficient heating in winter. See more:

    Wall Mounted Monoblock Air Conditioner
  25. Evaporative coolers: a rundown
    18 May 2018

    In a nut shell, there is a fan inside the cooler that draws outside air through 4 irrigated pads. The water that evaporates from the pads onto the air passing through the pads, cools the air, and the fan pushes that cooled air into the building to the occupied level. This introduced cooled air displaces warm air which rises an escapes through outlet vents in the roof. For large open type buildings such as factories, bakeries, workshops and foundries, cooling with evaporative coolers is the preferred option because for such large spaces air conditioning is not cost effective. These installed evaporative coolers come in a wide variety of sizes with the largest delivering a massive 63000m3/hr of cool air. Different versions deliver the cold air via either side discharge, top or base discharge. See more:

    Evaporative coolers: a rundown

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