--- title: Discover the L-Concept description: The L-concept allows the air handling unit to be connected vertically and horizontally. This means that larger AHUs can be installed and the maximum utilisation of space for air handling and ventilation is achieved. image: https://blog.swegon.com/hubfs/12.png --- [![](https://www.swegon.com/Static/img/logo.svg?v=3)](https://www.swegon.com/uk/) Menu - [Solutions & services](https://www.swegon.com/uk/solutions-and-services/) - [Products>](https://www.swegon.com/uk/products/) - [References & Insights](https://www.swegon.com/uk/references-and-insights/) - [Support & Software](https://www.swegon.com/uk/support/) - [Sustainability](https://www.swegon.com/uk/sustainability/) - [Why Swegon?](https://www.swegon.com/uk/why-swegon/) - [Product Search](https://www.swegon.com/uk/product-search-result/) - [Document Search](https://www.swegon.com/uk/support/find-documents/) - [Careers](https://www.swegon.com/uk/careers/) - United Kingdom - [Contact](https://www.swegon.com/uk/contact/) ## Choose a market [Or visit our global site](https://www.swegon.com) - [Belgium - French](https://www.swegon.com/fr-be/) - [Belgium - Dutch](https://www.swegon.com/nl-be/) - [Denmark](https://www.swegon.com/da/) - [Finland](https://www.swegon.com/fi/) - [France](https://www.swegon.com/fr/) - [Italy](https://www.swegon.com/it/) - [Germany](https://www.swegon.com/de/) - [Norway](https://www.swegon.com/no/) - [Poland](https://www.swegon.com/pl/) - [Spain](https://www.swegon.com/es/) - [Sweden](https://www.swegon.com/sv/) - [Switzerland - German](https://www.swegon.com/de-ch/) - [Switzerland - French](https://www.swegon.com/fr-ch/) - [Switzerland - Italian](https://www.swegon.com/it-ch/) - [United Kingdom](https://www.swegon.com/uk/) - [United States](https://www.swegonnorthamerica.com) - [Canada](http://swegonnorthamerica.com/) Explore ## Filter articles ### By topics - [Air Handling Units (2)](https://blog.swegon.com/uk/news/tag/air-handling-units) ### By authors - [![Darren Peel](https://blog.swegon.com/hs-fs/hubfs/Darren.jpg?width=75&name=Darren.jpg) Darren Peel 1](https://blog.swegon.com/uk/news/author/darren-peel) - [![Dene Kent](https://blog.swegon.com/hs-fs/hubfs/Dene%20Kent%20Swegon.jpg?width=75&name=Dene%20Kent%20Swegon.jpg) Dene Kent 1](https://blog.swegon.com/uk/news/author/dene-kent) Explore - - - [Swegon UK news](https://blog.swegon.com/uk/news) Subscribe Share - - - Explore Share Subscribe # Discover the L-Concept [Josh Emerson](https://blog.swegon.com/uk/news/author/josh-emerson) 14-Jan-2020 11:06:00 **The** ***L-concept*** **allows the air handling unit to be connected vertically and horizontally. This means that larger units can be installed and maximum utilisation of space inside the plant room is ensured.** To meet today's demands for energy efficiency and to comply with the ErP Energy directive, a physically larger air handling unit is often required, but it is seldom possible to change the size of the plant room. The new L-concept is designed to meet energy efficiency requirements without the need to change the size of the plant room. If space is limited, a top-connected unit may well be a handy solution, but because the unit air flow capacity was formerly not sufficient to cater for large interiors, the solution has tended to be to install an extra unit in order to meet demand. That is now a thing of the past. **The new GOLD Top range** With the new GOLD Top range, the air flow capacity has increased by more than 50% for our top-connected units with a rotary heat exchanger and our top-connected units with a counterflow heat exchanger have been boosted to provide more than double the air flow capacity of similar solutions in the market. Which means it is now possible to achieve space-saving installations while catering for bigger premises. ![GOLD Top and GOLD L-concept](https://blog.swegon.com/hs-fs/hubfs/goldtoplkoncept.png?width=376&name=goldtoplkoncept.png) If want to test on your own, then why not give  SWEGON 's new product selection program [AHU](https://www.swegon.com/support/software/ahu-design/)[Design a try.](https://www.swegon.com/support/software/ahu-design/) Topics: - [Air Handling Units](https://blog.swegon.com/uk/news/tag/air-handling-units) - - - [![Josh Emerson](https://blog.swegon.com/hs-fs/hubfs/Josh_Emerson_Headshot.jpg?width=200&name=Josh_Emerson_Headshot.jpg)](https://blog.swegon.com/uk/news/author/josh-emerson) [Josh Emerson](https://blog.swegon.com/uk/news/author/josh-emerson) Josh Emerson is the Marketing & Sales Development Director at Swegon UK&I. He is dedicated to advancing building efficiency and occupant well-being and his passion lies in creating sustainable and health-focused indoor environments, contributing to the broader mission of shaping a better built environment for all. ## Recommended reading - [Air Handling Units](https://blog.swegon.com/uk/news/tag/air-handling-units) ### [Dene Kent](https://blog.swegon.com/uk/news/author/dene-kent) ## [Size, configure and make energy calculations with AHU Design](https://blog.swegon.com/uk/news/we-launch-our-ahu-design-selection-software) We have just launched the product selection program AHU Design to UK … Get news updates to your inbox. #### Get to know us - [Why Swegon?](https://www.swegon.com/uk/why-swegon/) - [Solutions & services](https://www.swegon.com/uk/solutions-and-services/) - [Products](https://www.swegon.com/uk/products/) - [References & Insights](https://www.swegon.com/uk/references-and-insights/) - [Support & Software](https://www.swegon.com/uk/support/) - [BlueBox Chiller ERP](http://www.blueboxcooling.com/) - [Sustainability](https://www.swegon.com/uk/sustainability/) #### More Swegon - [About us](https://www.swegon.com/uk/about-swegon/) - [Our Brands](https://www.swegon.com/uk/about-swegon/our-brands/) - [Contact](https://www.swegon.com/uk/contact/) - [Careers](https://www.swegon.com/uk/careers/) - [Information for suppliers](https://www.swegon.com/uk/contact/suppliers/) - [Swegon Designer Suite](https://sds.swegon.com/) - [Swegon Air Academy](https://www.swegonairacademy.com/en/) #### Subscribe to our blog [![](https://www.swegon.com/siteassets/logos/swegon-logo-white.svg)](https://www.swegon.com/uk/) Swegon Ltd, 5 Charterpoint Way, Ashby-de-la-Zouch Leicestershire LE65 1NF - [Privacy statement](https://www.swegon.com/uk/privacy-policy/) - [Cookies](https://www.swegon.com/uk/cookies/) - [Processing personal data](https://www.swegon.com/uk/privacy-policy/processing-personal-data/) - [Vulnerability disclosure policy](https://www.swegon.com/uk/vulnerability-disclosure-policy/) - [![Youtube](https://www.swegon.com/Static/img/youtube.svg)](https://www.youtube.com/user/SwegonAB) - [![Linkedin](https://www.swegon.com/Static/img/linkedin.svg)](https://www.linkedin.com/company/swegon-ab/) - [![Facebook](https://www.swegon.com/Static/img/facebook.svg)](https://www.facebook.com/swegongroup)