--- title: Hoffman Unfiltered - Educational Blog Content for HVAC Professionals | Make-up Air description: Make-up Air | --- - [(336) 292-8777](tel:+3362928777) - [info@hoffman-hoffman.com](mailto:info@hoffman-hoffman.com) [Blog](https://blog.hoffman-hoffman.com/blog) [![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/facebook-icon-svg.svg)](https://www.facebook.com/HoffmanHoffmanInc) [![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/instagram-icon-svg.svg)](https://www.instagram.com/hoffmanhoffmaninc/) [![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/twitter-icon-svg.svg)](https://twitter.com/HoffandHoffInc) [![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/linkedin-icon-svg.svg)](https://www.linkedin.com/company/hoffman-%26-hoffman-inc./) [![cropped-hoffman-logo](https://info.hoffman-hoffman.com/hs-fs/hubfs/Blog-Assets-April-2020/Images/cropped-hoffman-logo.png?width=1457&height=281&name=cropped-hoffman-logo.png "cropped-hoffman-logo")](http://hoffman-hoffman.com) - 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[Contact Us](https://www.hoffman-hoffman.com/the-hoffman-way/contact/) - [Privacy Policy](https://www.hoffman-hoffman.com/wp-content/uploads/2020/04/Privacy-Policy-FINAL-2020.04.07-.pdf) - [Terms of Use](https://www.hoffman-hoffman.com/wp-content/uploads/2020/04/Hoffman-Website-Terms-of-Use-FINAL-2020.04.07-.pdf) ![](https://www.hoffman-hoffman.com/wp-content/themes/manedigital/assets/dist/images/search.svg) ![](https://www.hoffman-hoffman.com/wp-content/themes/manedigital/assets/dist/images/search-white.svg) ![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/marker-white.svg) #### Main Office 3816 Patterson St Greensboro, NC 27407 23 #### Hours of Operation 8AM to 5PM - Monday - Friday Closed Saturday and Sunday *We offer 24/7 emergency repair service* ![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/telephone-white.svg) Stock Warehouse [(800) 334-0254](tel:+8003340254) ![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/telephone-white.svg) Replacement Parts [(800) 332-2295](tel:8003322295) ![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/email-white.svg) Consultation / Evaluation: [info@hoffman-hoffman.com](mailto:info@hoffman-hoffman.com) ![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/email-white.svg) Parts: [parts@hoffman-hoffman.com](mailto:parts@hoffman-hoffman.com) [![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/facebook-white.svg)](https://www.facebook.com/HoffmanHoffmanInc/) [![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/instagram-white.svg)](https://www.instagram.com/hoffmanhoffmaninc/) [![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/twitter-white.svg)](https://twitter.com/HoffandHoffInc) [![](https://info.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/linkedin-white.svg)](https://www.linkedin.com/company/hoffman-%26-hoffman-inc./) [![cropped-hoffman-logo](https://info.hoffman-hoffman.com/hs-fs/hubfs/Blog-Assets-April-2020/Images/cropped-hoffman-logo.png?width=1457&height=281&name=cropped-hoffman-logo.png "cropped-hoffman-logo")](http://hoffman-hoffman.com) - 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[Contact Us](https://www.hoffman-hoffman.com/the-hoffman-way/contact/) - [Privacy Policy](https://www.hoffman-hoffman.com/wp-content/uploads/2020/04/Privacy-Policy-FINAL-2020.04.07-.pdf) - [Terms of Use](https://www.hoffman-hoffman.com/wp-content/uploads/2020/04/Hoffman-Website-Terms-of-Use-FINAL-2020.04.07-.pdf) ![](https://www.hoffman-hoffman.com/wp-content/themes/manedigital/assets/dist/images/search.svg) ![](https://www.hoffman-hoffman.com/wp-content/themes/manedigital/assets/dist/images/search-white.svg) [![mob-logo](https://info.hoffman-hoffman.com/hs-fs/hubfs/Blog-Assets-April-2020/Images/mob-logo.png?width=201&height=201&name=mob-logo.png "mob-logo")](http://hoffman-hoffman.com) - [Equipment](https://www.hoffman-hoffman.com/equipment/) - [In-Stock Catalog with Prices](https://issuu.com/hoffman-hoffman/docs/hh_2019_single_print?e=2500206/65071024) - [Projects](https://www.hoffman-hoffman.com/project-types/) - [Commercial Office Buildings](https://www.hoffman-hoffman.com/project-types/commercial-office-buildings/) - [Data Centers](https://www.hoffman-hoffman.com/project-types/data-centers/) - [Hospitality](https://www.hoffman-hoffman.com/project-types/hospitality/) - [Hospitals & Medical Offices](https://www.hoffman-hoffman.com/project-types/hospitals-medical-offices/) - [Automation](https://www.hoffman-hoffman.com/automation/) - [Services](https://www.hoffman-hoffman.com/services/) - [Training](https://www.hoffman-hoffman.com/training/) - [Parts](https://www.hoffman-hoffman.com/parts/) - [About Us](https://www.hoffman-hoffman.com/the-hoffman-way/) - [History](https://www.hoffman-hoffman.com/the-hoffman-way/history/) - [Work With Us](https://www.hoffman-hoffman.com/the-hoffman-way/work-with-us/) - [Contact Us](https://www.hoffman-hoffman.com/the-hoffman-way/contact/) - [Privacy Policy](https://www.hoffman-hoffman.com/wp-content/uploads/2020/04/Privacy-Policy-FINAL-2020.04.07-.pdf) - [Terms of Use](https://www.hoffman-hoffman.com/wp-content/uploads/2020/04/Hoffman-Website-Terms-of-Use-FINAL-2020.04.07-.pdf) ![](https://www.hoffman-hoffman.com/wp-content/themes/manedigital/assets/dist/images/search.svg) ## WE BUILD THE FUTURE # HOFFMAN UNFILTERED Educational Blog Content for HVAC Professionals ### [Greenheck Assists With Temporary Hospital](https://info.hoffman-hoffman.com/blog/greenheckassistswithtemporaryhospital) [Greenheck Group](https://www.greenheck.com/about-us/news/news-items/2020/03/26/greenheck-group-producing-essential-air-movement-equipment-to-support-healthcare-during-covid-19-pandemic?fbclid=IwAR143EdbkmCnZcHFue4d3XXjD9NvhjX4IrZS3OuiDdvba8fHepAtN0ujdjs) is a global leader in the engineering and manufacture of HVAC equipment. During these times, they continue to support ongoing... ![](https://info.hoffman-hoffman.com/hubfs/calender-icon.png) May / 14 [READ MORE](https://info.hoffman-hoffman.com/blog/greenheckassistswithtemporaryhospital) [ALL POSTS](https://info.hoffman-hoffman.com/blog/all) ### Recent Posts ### categories - [ABB (6)](https://info.hoffman-hoffman.com/blog/tag/abb) - [AHU (1)](https://info.hoffman-hoffman.com/blog/tag/ahu) - [air circulation (9)](https://info.hoffman-hoffman.com/blog/tag/air-circulation) - [air handler (5)](https://info.hoffman-hoffman.com/blog/tag/air-handler) - [air pollution (4)](https://info.hoffman-hoffman.com/blog/tag/air-pollution) - [Air Purification (5)](https://info.hoffman-hoffman.com/blog/tag/air-purification) - [air quality (8)](https://info.hoffman-hoffman.com/blog/tag/air-quality) - [airborne illnesses (3)](https://info.hoffman-hoffman.com/blog/tag/airborne-illnesses) - [Architectural Design (1)](https://info.hoffman-hoffman.com/blog/tag/architectural-design) - [Architectural Solutions (1)](https://info.hoffman-hoffman.com/blog/tag/architectural-solutions) - [ASHRAE (8)](https://info.hoffman-hoffman.com/blog/tag/ashrae) - [Automatic Balancing Dampers (1)](https://info.hoffman-hoffman.com/blog/tag/automatic-balancing-dampers) - [Baldor Motors (1)](https://info.hoffman-hoffman.com/blog/tag/baldor-motors) - [Big Ass Fans (5)](https://info.hoffman-hoffman.com/blog/tag/big-ass-fans) - [Building (6)](https://info.hoffman-hoffman.com/blog/tag/building) ### subscribe #### Our Location Main Office 3816 Patterson St Greensboro, NC 27407 #### Hours of Operation 8AM to 5PM – Monday through Friday Closed Saturday and Sunday *We offer 24/7 emergency repair service* #### Contact Us ![](https://blog.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/telephone-white.svg) Main Office [(336) 292-8777](tel:+3362928777) ![](https://blog.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/telephone-white.svg) Stock Warehouse [(800) 334-0254](tel:+8003340254) ![](https://blog.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/telephone-white.svg) Replacement Parts [(800) 332-2295](tel:+8003322295) ![](https://blog.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/email-white.svg) Consultation / Evaluation: [info@hoffman-hoffman.com](mailto:info@hoffman-hoffman.com) Hoffman & Hoffman, Inc., Hoffman Building Technologies, Inc., Hoffman Mechanical Solutions, Inc., and Heat Transfer Sales, LLC, are separate legal entities. ![](https://blog.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/footer-logo.png) All content © 2019, Hoffman & Hoffman [![Facebook](https://blog.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/facebook-white.svg)](https://www.facebook.com/HoffmanHoffmanInc) [![Instagram](https://blog.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/instagram-white.svg)](https://www.instagram.com/hoffmanhoffmaninc/) [![Twitter](https://blog.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/twitter-white.svg)](https://twitter.com/HoffandHoffInc) [![LinkedIn](https://blog.hoffman-hoffman.com/hubfs/Blog-Assets-April-2020/Images/linkedin-white.svg)](https://www.linkedin.com/company/hoffman-%26-hoffman-inc./)