--- title: The Swegon Blog | www.swegon.com | William Lawrance image: https://blog.swegon.com/hubfs/Assets/img/sharing_image_swegon.png --- [![](https://www.swegon.com/Static/img/logo.svg?v=3)](https://www.swegon.com/) Menu - [Solutions & services](https://www.swegon.com/solutions-and-services/) - [Products](https://www.swegon.com/products/) - [References & Insights](https://www.swegon.com/references-and-insights/) - [Support & software](https://www.swegon.com/support/) - [Sustainability](https://www.swegon.com/sustainability/) - [Why Swegon?](https://www.swegon.com/why-swegon/) - [Product Search](https://www.swegon.com/product-search-result/) - [Document Search](https://www.swegon.com/support/find-documents/) - [Career](https://www.swegon.com/career/) - Global - [Contact](https://www.swegon.com/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/) - 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[Room Units (21)](https://blog.swegon.com/en/tag/room-units) - [Heat Pumps (12)](https://blog.swegon.com/en/tag/heat-pumps) - [Acoustics (9)](https://blog.swegon.com/en/tag/acoustics) - [Optimisation Systems (9)](https://blog.swegon.com/en/tag/optimisation-systems) - [Humidity (7)](https://blog.swegon.com/en/tag/humidity) - [Services & Connectivity (7)](https://blog.swegon.com/en/tag/services-connectivity) - [Renovation (6)](https://blog.swegon.com/en/tag/renovation) - [Schools (4)](https://blog.swegon.com/en/tag/schools) - [Software (4)](https://blog.swegon.com/en/tag/software) - [BIM (3)](https://blog.swegon.com/en/tag/bim) - [Gender Equality (3)](https://blog.swegon.com/en/tag/gender-equality) - [Air Quality (2)](https://blog.swegon.com/en/tag/air-quality) - [Residential (1)](https://blog.swegon.com/en/tag/residential) > Fler ### By authors - [![Alberto Ferrandi](https://blog.swegon.com/hs-fs/hubfs/Bild%20alberto.png?width=75&name=Bild%20alberto.png) Alberto Ferrandi 6](https://blog.swegon.com/en/author/alberto-ferrandi) - [![Alberto Frison](https://blog.swegon.com/hs-fs/hubfs/alberto.jpg?width=75&name=alberto.jpg) Alberto Frison 2](https://blog.swegon.com/en/author/alberto-frison) - [![Alessandro Lora](https://blog.swegon.com/hs-fs/hubfs/lora.webp?width=75&name=lora.webp) Alessandro Lora 3](https://blog.swegon.com/en/author/alessandro-lora) - [![Alessandro Pinato](https://blog.swegon.com/hs-fs/hubfs/alessandro.webp?width=75&name=alessandro.webp) Alessandro Pinato 9](https://blog.swegon.com/en/author/alessandro-pinato) - [![Anders Jakobsson](https://blog.swegon.com/hs-fs/hubfs/Anders%20Jacobsson_4.jpg?width=75&name=Anders%20Jacobsson_4.jpg) Anders Jakobsson 3](https://blog.swegon.com/en/author/anders-jakobsson) - [![Andreas Söderholm](https://blog.swegon.com/hs-fs/hubfs/andreassoderholm.webp?width=75&name=andreassoderholm.webp) Andreas Söderholm 1](https://blog.swegon.com/en/author/andreas-söderholm) - [![Andreas Örje Wellstam](https://blog.swegon.com/hs-fs/hubfs/andreas-orje-wellstam.webp?width=75&name=andreas-orje-wellstam.webp) Andreas Örje Wellstam 5](https://blog.swegon.com/en/author/andreas-örje-wellstam) - [![Anna Sundell](https://blog.swegon.com/hs-fs/hubfs/Anna.jpg?width=75&name=Anna.jpg) Anna Sundell 1](https://blog.swegon.com/en/author/anna-sundell) - [![Bastien Stocq](https://blog.swegon.com/hs-fs/hubfs/Bastien.png?width=75&name=Bastien.png) Bastien Stocq 1](https://blog.swegon.com/en/author/bastien-stocq) - [![Björn Erlingsson](https://blog.swegon.com/hs-fs/hubfs/bjornerling.png?width=75&name=bjornerling.png) Björn Erlingsson 1](https://blog.swegon.com/en/author/björn-erlingsson) - [![Börje Lehrman](https://blog.swegon.com/hs-fs/hubfs/Blog%20Authors/SE-SV%20-%20PRO%20-%20BACV/B%C3%B6rje_Lehrman.jpg?width=75&name=B%C3%B6rje_Lehrman.jpg) Börje Lehrman 3](https://blog.swegon.com/en/author/börje-lehrman) - [![Caroline Jacobsson](https://blog.swegon.com/hs-fs/hubfs/Blog%20Authors/Caroline%20Jacobsson.jpg?width=75&name=Caroline%20Jacobsson.jpg) Caroline Jacobsson 10](https://blog.swegon.com/en/author/caroline-jacobsson) - [![Elvis Kokot](https://blog.swegon.com/hs-fs/hubfs/elviskokot.png?width=75&name=elviskokot.png) Elvis Kokot 1](https://blog.swegon.com/en/author/elvis-kokot) - [![Fabio Polo](https://blog.swegon.com/hs-fs/hubfs/Fabio%20Polo-1.jpg?width=75&name=Fabio%20Polo-1.jpg) Fabio Polo 9](https://blog.swegon.com/en/author/fabio-polo) - [![Francesco Artusi](https://blog.swegon.com/hs-fs/hubfs/Francesco%20Artusi%20CUT.jpg?width=75&name=Francesco%20Artusi%20CUT.jpg) Francesco Artusi 1](https://blog.swegon.com/en/author/francesco-artusi) - [![François Jouvray](https://blog.swegon.com/hs-fs/hubfs/francois%20Jouvray2.jpg?width=75&name=francois%20Jouvray2.jpg) François Jouvray 1](https://blog.swegon.com/en/author/françois-jouvray) - [![Jan Scheuring](https://blog.swegon.com/hs-fs/hubfs/Photo_Jan-1.jpeg?width=75&name=Photo_Jan-1.jpeg) Jan Scheuring 3](https://blog.swegon.com/en/author/jan-scheuring) - [![John Wibrand](https://blog.swegon.com/hs-fs/hubfs/John%20Wibrand.jpg?width=75&name=John%20Wibrand.jpg) John Wibrand 2](https://blog.swegon.com/en/author/john-wibrand) - [![Josh Emerson](https://blog.swegon.com/hs-fs/hubfs/Josh_Emerson_Headshot.jpg?width=75&name=Josh_Emerson_Headshot.jpg) Josh Emerson 1](https://blog.swegon.com/en/author/josh-emerson) - [![Lars Norrdal](https://blog.swegon.com/hs-fs/hubfs/Blog%20Authors/SWEGON%20henkilo%E2%95%A0%C3%AAsto%E2%95%A0%C3%AAkuvat%2020190786.jpg?width=75&name=SWEGON%20henkilo%E2%95%A0%C3%AAsto%E2%95%A0%C3%AAkuvat%2020190786.jpg) Lars Norrdal 1](https://blog.swegon.com/en/author/lars-norrdal) - [![Luca Filippetto](https://blog.swegon.com/hs-fs/hubfs/Luca%20Filippetto%20Hubspot.jpg?width=75&name=Luca%20Filippetto%20Hubspot.jpg) Luca Filippetto 4](https://blog.swegon.com/en/author/luca-filippetto) - [![Luca Zordan](https://blog.swegon.com/hs-fs/hubfs/lucazordan.png?width=75&name=lucazordan.png) Luca Zordan 1](https://blog.swegon.com/en/author/luca-zordan) - [![Magnus Andersson](https://blog.swegon.com/hs-fs/hubfs/magnus%20andersson_550x550%20(1).jpg?width=75&name=magnus%20andersson_550x550%20(1).jpg) Magnus Andersson 1](https://blog.swegon.com/en/author/magnus-andersson) - [![Malin Höij](https://blog.swegon.com/hs-fs/hubfs/malinh.webp?width=75&name=malinh.webp) Malin Höij 5](https://blog.swegon.com/en/author/malin-höij) - [![Markus Schomaker](https://blog.swegon.com/hs-fs/hubfs/Dr.-Ing.%20Markus%20Schomaker_Quadratisch.jpg?width=75&name=Dr.-Ing.%20Markus%20Schomaker_Quadratisch.jpg) Markus Schomaker 2](https://blog.swegon.com/en/author/markus) - [![Martin Ottersten](https://blog.swegon.com/hs-fs/hubfs/Blog%20Authors/Martin_Ottersten.jpg?width=75&name=Martin_Ottersten.jpg) Martin Ottersten 4](https://blog.swegon.com/en/author/martin-ottersten) - [![Mike Ward](https://blog.swegon.com/hs-fs/hubfs/Michael_Ward_photo.jpg?width=75&name=Michael_Ward_photo.jpg) Mike Ward 5](https://blog.swegon.com/en/author/michael-ward) - [![Mikael Börjesson](https://blog.swegon.com/hs-fs/hubfs/Blog%20Authors/Mikael%20B%C3%B6rjesson.jpg?width=75&name=Mikael%20B%C3%B6rjesson.jpg) Mikael Börjesson 30](https://blog.swegon.com/en/author/mikael-börjesson) - [![Mirko Sauvan](https://blog.swegon.com/hs-fs/hubfs/Swegon_Mirko%20Sauvan_web_3.jpg?width=75&name=Swegon_Mirko%20Sauvan_web_3.jpg) Mirko Sauvan 2](https://blog.swegon.com/en/author/mirko-sauvan-1) - [![Nicklas Svensson](https://blog.swegon.com/hs-fs/hubfs/NicklasSvensson.png?width=75&name=NicklasSvensson.png) Nicklas Svensson 1](https://blog.swegon.com/en/author/nicklas-svensson) - [![Niklas Jacobsson](https://blog.swegon.com/hs-fs/hubfs/authorniklas.png?width=75&name=authorniklas.png) Niklas Jacobsson 2](https://blog.swegon.com/en/author/niklas-jacobsson) - [![Paola Moschini](https://blog.swegon.com/hs-fs/hubfs/forfattare.webp?width=75&name=forfattare.webp) Paola Moschini 1](https://blog.swegon.com/en/author/paola-moschini) - [![Philip Wikström](https://blog.swegon.com/hs-fs/hubfs/Philip_Andersson_pressbild_small_webb.jpg?width=75&name=Philip_Andersson_pressbild_small_webb.jpg) Philip Wikström 3](https://blog.swegon.com/en/author/philip-wikstrom) - [![Robert Siverby](https://blog.swegon.com/hs-fs/hubfs/MicrosoftTeams-image%20(3)-4.png?width=75&name=MicrosoftTeams-image%20(3)-4.png) Robert Siverby 1](https://blog.swegon.com/en/author/robert-siverby) - [![Stefan Lay](https://blog.swegon.com/hs-fs/hubfs/1517033472060.jpg?width=75&name=1517033472060.jpg) Stefan Lay 1](https://blog.swegon.com/en/author/stefan-lay) - [![Swegon](https://blog.swegon.com/hs-fs/hubfs/swegsw-1.png?width=75&name=swegsw-1.png) Swegon 3](https://blog.swegon.com/en/author/swegon) - [![Timo Schreck](https://blog.swegon.com/hs-fs/hubfs/Timo%20Schreck.jpg?width=75&name=Timo%20Schreck.jpg) Timo Schreck 2](https://blog.swegon.com/en/author/timo-schreck) - [![Tobias Nordström](https://blog.swegon.com/hs-fs/hubfs/TobiasNordstromPHOTO.jpg?width=75&name=TobiasNordstromPHOTO.jpg) Tobias Nordström 5](https://blog.swegon.com/en/author/tobias-nordström) - [![Tomi Laakso](https://blog.swegon.com/hs-fs/hubfs/Blog%20Authors/TomiLaakso.jpg?width=75&name=TomiLaakso.jpg) Tomi Laakso 1](https://blog.swegon.com/en/author/tomi-laakso) - [![Tony Olsson](https://blog.swegon.com/hs-fs/hubfs/Tony%20Olsson.webp?width=75&name=Tony%20Olsson.webp) Tony Olsson 6](https://blog.swegon.com/en/author/tony-olsson) - [![Tony Pettersson](https://blog.swegon.com/hs-fs/hubfs/tonyp.jpg?width=75&name=tonyp.jpg) Tony Pettersson 1](https://blog.swegon.com/en/author/tony-pettersson) - [![Welat Han](https://blog.swegon.com/hs-fs/hubfs/Welat%20Han.jpg?width=75&name=Welat%20Han.jpg) Welat Han 3](https://blog.swegon.com/en/author/welat-han) - [![William Lawrance](https://blog.swegon.com/hs-fs/hubfs/William2.jpg?width=75&name=William2.jpg) William Lawrance 12](https://blog.swegon.com/en/author/william-lawrance) - [![Åsa Norén-Lundh](https://blog.swegon.com/hs-fs/hubfs/A%CC%8Asa%20Nore%CC%81n-Lundh.webp?width=75&name=A%CC%8Asa%20Nore%CC%81n-Lundh.webp) Åsa Norén-Lundh 6](https://blog.swegon.com/en/author/åsa-norén-lundh) - [![Åse Esselius](https://blog.swegon.com/hs-fs/hubfs/%C3%85seEsseliusClose.png?width=75&name=%C3%85seEsseliusClose.png) Åse Esselius 1](https://blog.swegon.com/en/author/åse-esselius) Explore - - - [The Swegon Blog](https://blog.swegon.com/en) Subscribe Explore Share Subscribe # The Swegon blog – Everything about indoor climate Our experts at Swegon have for years shared their knowledge and skills in the format of enlightening blog posts about ventilation, heating and cooling. With different angles of approach, a wide variety of indoor climate related topics have been presented and explained with sincere engagement and broadmindedness. Below you find more than 100 blog posts, and we are constantly adding new ones, in our aspiration to build knowledge about indoor climate – within, as well as outside, the building industry. Click on the pre-set tags, or use the filter function under "Explore" to narrow down the number of posts to a selection that is relevant to your interest or that will give you new and useful insights. [![William Lawrance](https://blog.swegon.com/hs-fs/hubfs/William2.jpg?width=200&height=200&name=William2.jpg)](https://blog.swegon.com/en/author/william-lawrance) [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) With more than 40 years of experience in the industry, William Lawrance is a Senior Product Manager at Swegon. William is also the Convenor for the CEN workgroup, responsible for preparing the AHU standards EN 13053 and EN 1886, as well as the Chairman of Eurovent Certification Compliance Committee for AHU. ### By topics - [Indoor Climate Knowledge (56)](https://blog.swegon.com/en/tag/indoor-climate-knowledge) - [Cooling & Heating (27)](https://blog.swegon.com/en/tag/cooling-heating) - [Air Handling Units (25)](https://blog.swegon.com/en/tag/air-handling-units) - [Sustainability (24)](https://blog.swegon.com/en/tag/sustainability) - [Energy Efficiency (23)](https://blog.swegon.com/en/tag/energy-efficiency) - [Room Units (21)](https://blog.swegon.com/en/tag/room-units) - [Heat Pumps (12)](https://blog.swegon.com/en/tag/heat-pumps) - [Acoustics (9)](https://blog.swegon.com/en/tag/acoustics) - [Optimisation Systems (9)](https://blog.swegon.com/en/tag/optimisation-systems) - [Humidity (7)](https://blog.swegon.com/en/tag/humidity) - [Services & Connectivity (7)](https://blog.swegon.com/en/tag/services-connectivity) - [Renovation (6)](https://blog.swegon.com/en/tag/renovation) - [Schools (4)](https://blog.swegon.com/en/tag/schools) - [Software (4)](https://blog.swegon.com/en/tag/software) - [BIM (3)](https://blog.swegon.com/en/tag/bim) - [Gender Equality (3)](https://blog.swegon.com/en/tag/gender-equality) - [Air Quality (2)](https://blog.swegon.com/en/tag/air-quality) - [Residential (1)](https://blog.swegon.com/en/tag/residential) + More X Close - [Air Handling Units](https://blog.swegon.com/en/tag/air-handling-units) ### [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) ## [What is ATEX and what should be considered for hazardous environments?](https://blog.swegon.com/en/what-is-atex-and-what-should-be-considered-for-hazardous-environments) In many industrial environments, safety is not simply about maintaining comfort or ensuring operational efficiency. Facilities that handle gases, vapours or combustible substances face an additional challenge: the risk of explosive atmospheres. For consultants, contractors and facility operators, … - [Energy Efficiency](https://blog.swegon.com/en/tag/energy-efficiency) - [Air Handling Units](https://blog.swegon.com/en/tag/air-handling-units) ### [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) ## [Cooling coil sizing: why temperature and humidity matters](https://blog.swegon.com/en/cooling-coil-sizing-why-temperature-and-humidity-matters) When selecting cooling coils for air handling units, it is essential to use relevant input data to ensure that the cooling power is appropriately sized. Oversized cooling coils lead to oversized chillers, which can significantly increase the investment cost. This blog post written by William … - [Air Handling Units](https://blog.swegon.com/en/tag/air-handling-units) ### [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) ## [Condensation and frosting in rotary heat exchangers](https://blog.swegon.com/en/condensation-and-frosting-in-rotary-heat-exchangers) Air-to-air heat exchangers used for energy recovery in ventilation units sometimes need to operate in very low outdoor temperatures. During operation the surfaces in the heat exchanger are cooled by the outdoor air and warmed by the extract air. This means that the heat exchanger has a cold side … - [Air Handling Units](https://blog.swegon.com/en/tag/air-handling-units) - [Sustainability](https://blog.swegon.com/en/tag/sustainability) ### [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) ## [The future for air handling units under the new F-Gas regulation in the EU](https://blog.swegon.com/en/f-gas-ahu) As a company, we have recently focused on the topic of sustainability in a number of ways, in the context of indoor climate solutions. In previous blog posts, we have discussed topics such as the Renovation wave, the BACS decree and the recently updated F-Gas regulations - all through the lens of … - [Air Handling Units](https://blog.swegon.com/en/tag/air-handling-units) - [Software](https://blog.swegon.com/en/tag/software) ### [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) ## [Product selection software in the HVAC industry](https://blog.swegon.com/en/product-selection-software-in-the-hvac-industry) There are a great number of alternatives available, and choices to make, when designing a solution for ventilation, heating and cooling. Experts in the industry have, with long-time experience, identified how to improve the decision making process and ease the product selection. Want to learn more, … - [Energy Efficiency](https://blog.swegon.com/en/tag/energy-efficiency) - [Air Handling Units](https://blog.swegon.com/en/tag/air-handling-units) ### [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) ## [How to increase energy-efficiency of your air handling unit](https://blog.swegon.com/en/how-to-increase-energy-efficiency-of-your-air-handling-unit) As Google searches regarding energy-savings have somewhat skyrocketed lately, it is reasonable to think that the following search has been made more than just a few times: how to save energy + AHU? - [Air Handling Units](https://blog.swegon.com/en/tag/air-handling-units) - [Humidity](https://blog.swegon.com/en/tag/humidity) ### [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) ## [The many advantages of sorption technology](https://blog.swegon.com/en/the-many-advantages-of-sorption-technology) Air handling units equipped with rotary heat exchangers with a sorption coating bring significant opportunity for energy and carbon emission reductions, while also improving the indoor environment. But what exactly is it that make them so advantageous? Here is a step-by-step guide to understanding … - [Air Handling Units](https://blog.swegon.com/en/tag/air-handling-units) ### [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) ## [Duct system pressure and SFP](https://blog.swegon.com/en/duct-system-pressure-and-sfp) The duct system pressure drop has a significant impact on the SFP. But what are the factors we need to focus on when reducing SFP? Lets take a closer look at that. - [Air Handling Units](https://blog.swegon.com/en/tag/air-handling-units) ### [William Lawrance](https://blog.swegon.com/en/author/william-lawrance) ## [Getting to grips with internal leakage in air handling units](https://blog.swegon.com/en/getting-to-grips-with-internal-leakage-in-air-handling-units) Internal leakage of air in ventilation systems is wasteful and it can also affect the indoor air quality so we need to minimise leakage to both optimise the energy consumption and ensure the best possible air quality. In this article, you will get to know different modes of internal leakages and … [1](https://blog.swegon.com/en/author/william-lawrance/page/1) [2](https://blog.swegon.com/en/author/william-lawrance/page/2) [Next](https://blog.swegon.com/en/author/william-lawrance/page/2) By topics Get updates from the blog directly to your inbox. #### Get to know us - [Why Swegon?](https://www.swegon.com/why-swegon/) - [Solutions & services](https://www.swegon.com/solutions-and-services/) - [Products](https://www.swegon.com/products/) - [References & Insights](https://www.swegon.com/references-and-insights/) - [Support & Software](https://www.swegon.com/support/) - [Sustainability](https://www.swegon.com/sustainability/) #### More Swegon - [About us](https://www.swegon.com/about-swegon/) - [Our Brands](https://www.swegon.com/about-swegon/our-brands/) - [News](https://blog.swegon.com/en/news) - [For suppliers](https://www.swegon.com/for-suppliers/) - [The Swegon Blog](https://blog.swegon.com/en) - [Swegon Air Academy](https://www.swegonairacademy.com/en/) #### Subscribe to The Swegon Blog [![](https://www.swegon.com/siteassets/logos/logo.svg?v=1620107735)](https://www.swegon.com/) Swegon Group AB, JA Wettergrens gata 7, SE-421 30 Västra Frölunda, Tel +46 (0)31-89 58 00, Fax +46 (0)31-89 94 69, info@swegon.com - [Privacy statement](https://www.swegon.com/privacy-policy/) - [Cookies](https://www.swegon.com/cookies/) - [Processing personal data](https://www.swegon.com/privacy-policy/processing-personal-data/) - [![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)