vertical air curtains; vertical door air curtains; industrial vertical air curtainsFlexiheat UK

Vertical Air Curtains – Ambient Air or Heated –  Electric, Hot Water or Gas

vertical air curtains; vertical door air curtains; industrial vertical air curtains

Vertical Air Curtains from Flexiheat UK

Vertical Air Curtains – Vertical door air curtains or vertical air doors are often used where entrances or doors are required to stay open for operational purposes, such as vehicle entrances ,loading bays or building entrances. Air curtains work by preventing the external air from entering the building or area by creating a forceful turbulence over the door way or entrance – thus reducing infiltration through the opening and  are also energy saving. Cold drafts can be avoided by heating the air if so required with our heated vertical air curtain units.

Heated vertical air curtain units  are most commonly used when additional or supplemental heat is required for an area to keep out the cold air, and also to eliminate the wind chill factor in areas with a colder climate.

Another advantage of these vertical air curtains is that the “curtain of air” is at high pressure also helps keep flying insects from entering the building, which the doors or entrance is open. A recent independent UK case study showed that the number of insects and bugs entering a building was reduced by approximately 78%, when using an air curtain. This is why some people refer to a vertical air curtain as an air curtain insect barrier.

Air Curtain Basics _ What is an Air Curtain and How Does It Work

Air curtain basics -What is an air curtain and how do they work ?

Applications for these vertically mounted air curtains include cargo doors, customer entrances for shops ,office buildings, banks or any retail business, air plane hangars, goods inwards and goods outwards /despatch doors, restaurant doors, or any commercial or industrial applications.

Our vertical door air curtain units provide an efficient and powerful air barrier, and are a great solution for the doorways or entrances that can’t be covered by over the door air curtains, due to space or installation requirements such as revolving doors etc. As they are mounted at floor level, no drop rods are required for the air curtain installation, making a floor level install easier.

We do four versions of our energy saving vertical air curtain units, in either a commercial version or an industrial version dependant on installation height.

You must cover the entire height of the door, for our vertically mounted units to be effective and prevent heat loss.

Our “Slim” designer / stylish range

Firstly our “Slim Range” these are an elegant or stylish air curtain, which can be located on one side of the entrance or even revolving doors.


Vertical air curtain unit - White or Black Colour –our “Slim” designer / stylish air curtain range from Flexiheat UK

Our “Slim” designer / stylish range – Installing vertical air curtains on one side of the entrance


Vertical air curtain – Commercial range

The commercial versions are designated the “Air stream” range, these air curtains can actually be mounted either horizontally or vertically. When mounted vertically, they can cover a door way or entrance that is up to 8 metres wide doors when used installed on both sides of the doorway for the ambient air curtain units, or 7.4 metres for the electric or hot water heated air curtian units  and up to 6 metres in height, at full output which should cover all of your door way requirements.

These vertically mounted air curtains are available in three options, either an ambient air version, electrically heated units or a lphw or lthw water heated units. We do a gas version vertical units, for this option you have to look an our gas fired industrial vertical air curtain unit, which is detailed at the bottom of this web page.

vertical air curtain units in a vertical installation we can to 8 metres wide doors or entrances

When mounted on both sides our Airstream units, can cover up to 8 Metres for our ambient air curtain range, or 7.4 Metres for our heated air curtain units – electric or hot water.


The Air Stream range of vertically mounted air curtains are available in lengths of 1, 1.5 or 2 Metres, and are available in non-heated or ambient air version, electrically heated or lphw (low pressure hot water) / lthw (low temperature hot water) water heated units and are a slim design for a vertical mounting application.

vertically mounted air curtains; vertical installed air curtains;

Vertically mounted air curtains from Flexiheat UK – The air curtain must cover the entire height of the doorway

Thus, if your doorway is 3 metres high, you can couple together a 2-metre unit and a 1 metre unit, to achieve the vertical coverage of door. These wall mounted air curtains are fixed with the bracket set to wall next to the door or even revolving doors.

vertical commercial air curtain; vertical mounted door air curtains; vertical air curtain installation;

Vertical air curtain / Vertical door air curtain installation picture – “Airstream” range of ambient or heated air vertical air curtains that use a door switch or remote switch to activate the air flow when the doors are opened.


For full technical details of this range of vertical air curtain – please download the following –

Download the Vertical Air Curtains – Commercial Range -Airstream – Brochure

Air curtains industrial range

We do a full range of industrial vertical mounted air curtains too – in the options of ambient air, or warm air heated versions – these are electric, hot water heated air or gas fired.

The first in option in the air curtains industrial offering, is our “Elis G” range, a robust air curtain which can be either an ambient air curtain (non-heated air) or can be electrically or water heated vertical air curtain unit (detailed below on the page).This range of vertical door air curtains, can cover doors, entrances, or openings up to 7.5 Metres in height, and up to 13 metres maximum in width, at full output when installed on both sides of the door way. The Elis “G” range is a robust air curtain intended for heavy commercial and industrial use and especially suited to extra wide doorways or entrances.


We have a vertical gas fired air curtain range, the FAC-V range is composed of a gas heater, these are a vertical air curtain unit which are fuelled or powered by either natural gas (G20/G25) or propane gas (G31) as their energy source. The range includes 1 model of 45 kW Output. We also supply an ambient range, which is not a heated unit, which uses the surrounding ambient air to produce a powerful air curtain .These vertical door air curtains are designed to create a horizontal air barrier across the door in order to protect against the cold outside air, and to avoid any heating loss from inside the warehouse or building to the external air .The FAC-V gas fired range are used to protect doors from 2 to 4 metres high and up to 4 metres wide.

Vertical door air curtains – with Ambient Air, or Heated Air by electric or hot water 

Vertical door air curtains; vertical air curtain; industrial air curtain; industrial air curtains uk;

Our ” Elis G” Industrial vertical air curtain units, which are available in options of either ambient air or heated versions (by electric or lphw or mphw- hot water), and can cover extra wide doorways up to 13 metres wide and can be mounted up to 7.5 metres vertically.

We now have developed a new and improved industrial vertical air curtain range, which either uses the ambient air of the building or are available in a heated option. The heated vertical door air curtains can be powered by either electricity, which has to be three phase or by hot water, with a maximum temperature of up to 130 degrees C and up to 16 Bar in pressure.

These vertical air curtain units can be used in different combinations of lengths to cover roller shutter doors or up and over doors that are up to 7.5 metres high, in a vertical door air curtain configuration, and cover doorways or entrances that are up to 13 metres wide, when installed on both side of the doorway.

These industrial vertical air curtain range are basically modules that can be coupled together to make up your desired height for your industrial or commercial overhead roller shutter type door that you need to cover- not exceeding 7.5 metres in vertical height. The ambient models are available in either 0.5, 1.5 or 2 metre lengths whilst the heated versions (electric – three phase or hot water) are available in 1.5 or 2 metre lengths, and have adjustable outlet grilles.

This range of industrial vertical air curtain units is designated the “Elis G” range, and look like the below picture when installed on a commercial / large industrial doors.


vertical air curtain,vertical door curtains, for industrial and commercial applications


Ambient temperature is the air temperature of any environment where the vertical air curtains are installed. The adjective ambient means “relating to the immediate surroundings.” Thus the air pushed through these air curtains is the air temperature of the building or warehouse in which they are installed.

These vertical air curtain units provide a powerful curtain of air across an opening or door way, preventing warm or cool air escaping from your building or preventing the ingress of cold or warm air from entering, depending on the season. They help minimising energy costs and maximise not only comfort, but also convenience.

Download the vertical industrial air curtains – ambient or heated brochure from Flexiheat UK

Vertical door air curtains installed in a warehouse application

Below you can see our gas heated or gas fired vertical air curtain models, with the lower unit being a gas fired air curtain, and the upper unit being an ambient air version.

Vertical Air Curtain


Product advantages                                Customer benefits
Efficient air blast                                        Strong thermal barrier to avoid any cold air entrance or warm air loss from the building

Heated and/or ambient                            Flexibility according to each door and user needs
door curtain

Heating or Ventilation only                      Use in summer and winter time
Gas heater with air curtains                    Protect the door and heat the area


Thermal barrier air curtain technical benefits – Gas fired version

  • Multi jet burner with low NOx emission
  • Efficiency up to 91%
  • Full coverage of the door
  • Central command by pilot wire
  • Automatic safety device check
  • outlet grilles

This range of gas fired vertical air curtain units is fully ErP energy efficiency compliant and deliver a powerful barrier of heated air across open entrances or doorways, stopping indoor heat from escaping and creating an increased cost efficient and comfortable indoor environment.

gas fired vertical air curtain; vertical door air curtains; industrial air curtain; commercial air curtain heaters;

Using both heated air curtains and ambient air provide the most efficient method of providing a vertical air curtain system

Our vertical air curtains help promote the perfect environment whether warm, or ambient – creating a comfortable climate for customers and employees. Vertical air curtains promote open door trading in retail outlets by providing uninterrupted access for passing trade, and promote significant energy savings. Our vertical air curtains are not only easy to install but also easy to maintain throughout their serviceable life. Comes complete with an air curtain controls switch box controller.

The Flexiheat vertical range of industrial and commercial air curtains is ideal for medium to large sized buildings with a high pedestrian flow that require high output of air such as industrial doors at airports, shopping centres, factories and warehouses. For extra wide doorways or entrances, placing an air curtain on either side of the entrance creates a more efficient and effective thermal barrier.

Download the Flexiheat “FACV” Vertical Air Curtain Brochure Gas Fired

Download the Flexiheat Technical Manual for all Gas Air Curtain Heaters

Vertical Air Curtains or Vertical Door Air Curtains for Sale UK & Ireland 

Should you require anymore assistance or information on our Vertical Air Curtain range – either ambient air , electric, water or gas fired or Vertical Door Air Curtains ,as you may call them- Please don’t hesitate to contact our sales team on 01202 822221 or click here for our email contact form.