--- title: Greenheck's Automatic Balancing Dampers description: Automatic Balancing Dampers (ABD) provide precise and automatic airflow regulation in supply or exhaust ventilation systems. image: https://info.hoffman-hoffman.com/hubfs/ABD-Z1_4inch_Open.png --- - [(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) - [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) ![](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) - [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) ![](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 #### recent posts ![](https://info.hoffman-hoffman.com/hubfs/down-arrow.png) - [Maximizing Efficiency and Comfort: The Price Ultrasuite for Hospital Operating Rooms](https://info.hoffman-hoffman.com/blog/maximizing-efficiency-and-comfort-the-price-ultrasuite-for-hospital-operating-rooms) - [Dehumidification: Ensuring Optimal Conditions in Critical Environments](https://info.hoffman-hoffman.com/blog/dehumidification-ensuring-optimal-conditions-in-critical-environments) - [Bridging the Gap: Celebrating Sales Engineers During Engineers Week](https://info.hoffman-hoffman.com/blog/bridging-the-gap-celebrating-sales-engineers-during-engineers-week) - [For the Love of HVAC: A Career Story](https://info.hoffman-hoffman.com/blog/for-the-love-of-hvac-a-career-story) - [MERV-A Ratings Make the Best Filters Stand Out from the Crowd](https://info.hoffman-hoffman.com/blog/merv-a-ratings-make-the-best-filters-stand-out-from-the-crowd) #### popular ![](https://info.hoffman-hoffman.com/hubfs/down-arrow.png) - [ABB ACH580 Drives: Override Mode](https://info.hoffman-hoffman.com/blog/abb-ach580-drives-override-mode) - [Understanding HVAC Load Calculations for Commercial Spaces](https://info.hoffman-hoffman.com/blog/understanding-hvac-load-calculations-for-commercial-spaces) - [High Stakes, High Comfort: The HVAC Demands of Casinos](https://info.hoffman-hoffman.com/blog/high-stakes-high-comfort-the-hvac-demands-of-casinos) - [Psychrometrics – The Essence of HVAC](https://info.hoffman-hoffman.com/blog/psychrometrics-the-essence-of-hvac) - [HVAC Products for Magnetic Resonance Imaging (MRI) Applications](https://info.hoffman-hoffman.com/blog/hvac-products-for-magnetic-resonance-imaging-mri-applications) #### tags ![](https://info.hoffman-hoffman.com/hubfs/down-arrow.png) - [Commercial HVAC](https://info.hoffman-hoffman.com/blog/tag/commercial-hvac) - [indoor air quality](https://info.hoffman-hoffman.com/blog/tag/indoor-air-quality) - [HVAC](https://info.hoffman-hoffman.com/blog/tag/hvac) - [Price Industries](https://info.hoffman-hoffman.com/blog/tag/price-industries) - [Greenheck](https://info.hoffman-hoffman.com/blog/tag/greenheck) - [Ventilation](https://info.hoffman-hoffman.com/blog/tag/ventilation) - [Careers](https://info.hoffman-hoffman.com/blog/tag/careers) - [energy efficiency](https://info.hoffman-hoffman.com/blog/tag/energy-efficiency) - [HVAC expertise](https://info.hoffman-hoffman.com/blog/tag/hvac-expertise) - [commercial hvac system](https://info.hoffman-hoffman.com/blog/tag/commercial-hvac-system) - [healthy air](https://info.hoffman-hoffman.com/blog/tag/healthy-air) - [air circulation](https://info.hoffman-hoffman.com/blog/tag/air-circulation) - [k-12 schools](https://info.hoffman-hoffman.com/blog/tag/k-12-schools) - [ASHRAE](https://info.hoffman-hoffman.com/blog/tag/ashrae) - [ESOP](https://info.hoffman-hoffman.com/blog/tag/esop) - [Global Plasma Solutions](https://info.hoffman-hoffman.com/blog/tag/global-plasma-solutions) - [air quality](https://info.hoffman-hoffman.com/blog/tag/air-quality) - [hospitals](https://info.hoffman-hoffman.com/blog/tag/hospitals) - [Ruskin](https://info.hoffman-hoffman.com/blog/tag/ruskin) - [ABB](https://info.hoffman-hoffman.com/blog/tag/abb) - [Building](https://info.hoffman-hoffman.com/blog/tag/building) - [Camfil](https://info.hoffman-hoffman.com/blog/tag/camfil) - [filtration](https://info.hoffman-hoffman.com/blog/tag/filtration) - [Air Purification](https://info.hoffman-hoffman.com/blog/tag/air-purification) - [Big Ass Fans](https://info.hoffman-hoffman.com/blog/tag/big-ass-fans) - [Daikin Applied](https://info.hoffman-hoffman.com/blog/tag/daikin-applied) - [Louvers](https://info.hoffman-hoffman.com/blog/tag/louvers) - [NPBI](https://info.hoffman-hoffman.com/blog/tag/npbi) - [Needlepoint Bipolar Ionization](https://info.hoffman-hoffman.com/blog/tag/needlepoint-bipolar-ionization) - [air handler](https://info.hoffman-hoffman.com/blog/tag/air-handler) - [comfort](https://info.hoffman-hoffman.com/blog/tag/comfort) - [Continuing Education](https://info.hoffman-hoffman.com/blog/tag/continuing-education) - [Dampers](https://info.hoffman-hoffman.com/blog/tag/dampers) - [Ductwork](https://info.hoffman-hoffman.com/blog/tag/ductwork) - [HVLS Fans](https://info.hoffman-hoffman.com/blog/tag/hvls-fans) - [air pollution](https://info.hoffman-hoffman.com/blog/tag/air-pollution) - [energy recovery](https://info.hoffman-hoffman.com/blog/tag/energy-recovery) - [engineer tools](https://info.hoffman-hoffman.com/blog/tag/engineer-tools) - [training](https://info.hoffman-hoffman.com/blog/tag/training) - [universities](https://info.hoffman-hoffman.com/blog/tag/universities) - [Building Safety](https://info.hoffman-hoffman.com/blog/tag/building-safety) - [Daikin](https://info.hoffman-hoffman.com/blog/tag/daikin) - [DuctSox](https://info.hoffman-hoffman.com/blog/tag/ductsox) - [PDH Credits](https://info.hoffman-hoffman.com/blog/tag/pdh-credits) - [Sustainability](https://info.hoffman-hoffman.com/blog/tag/sustainability) - [VFDs](https://info.hoffman-hoffman.com/blog/tag/vfds) - [Webinar](https://info.hoffman-hoffman.com/blog/tag/webinar) - [airborne illnesses](https://info.hoffman-hoffman.com/blog/tag/airborne-illnesses) - [engineer](https://info.hoffman-hoffman.com/blog/tag/engineer) - [volume control](https://info.hoffman-hoffman.com/blog/tag/volume-control) - [Evapco](https://info.hoffman-hoffman.com/blog/tag/evapco) - [Nortek](https://info.hoffman-hoffman.com/blog/tag/nortek) - [Safety](https://info.hoffman-hoffman.com/blog/tag/safety) - [Stationary Louvers](https://info.hoffman-hoffman.com/blog/tag/stationary-louvers) - [energysolutions](https://info.hoffman-hoffman.com/blog/tag/energysolutions) - [facilities management](https://info.hoffman-hoffman.com/blog/tag/facilities-management) - [molecular filters](https://info.hoffman-hoffman.com/blog/tag/molecular-filters) - [pressurized room](https://info.hoffman-hoffman.com/blog/tag/pressurized-room) - [AHU](https://info.hoffman-hoffman.com/blog/tag/ahu) - [Architectural Design](https://info.hoffman-hoffman.com/blog/tag/architectural-design) - [Architectural Solutions](https://info.hoffman-hoffman.com/blog/tag/architectural-solutions) - [Automatic Balancing Dampers](https://info.hoffman-hoffman.com/blog/tag/automatic-balancing-dampers) - [Baldor Motors](https://info.hoffman-hoffman.com/blog/tag/baldor-motors) - [COVID-19](https://info.hoffman-hoffman.com/blog/tag/covid-19) - [CamCarb](https://info.hoffman-hoffman.com/blog/tag/camcarb) - [Controls](https://info.hoffman-hoffman.com/blog/tag/controls) - [Custom HVAC](https://info.hoffman-hoffman.com/blog/tag/custom-hvac) - [DOAS](https://info.hoffman-hoffman.com/blog/tag/doas) - [Data Centers](https://info.hoffman-hoffman.com/blog/tag/data-centers) - [Dedicated Outdoor Air System](https://info.hoffman-hoffman.com/blog/tag/dedicated-outdoor-air-system) - [Dehumidification](https://info.hoffman-hoffman.com/blog/tag/dehumidification) - [Haakon](https://info.hoffman-hoffman.com/blog/tag/haakon) - [Heat Pump](https://info.hoffman-hoffman.com/blog/tag/heat-pump) - [Make-up Air](https://info.hoffman-hoffman.com/blog/tag/make-up-air) - [Munters](https://info.hoffman-hoffman.com/blog/tag/munters) - [Remote Assistance](https://info.hoffman-hoffman.com/blog/tag/remote-assistance) - [Remote Monitoring](https://info.hoffman-hoffman.com/blog/tag/remote-monitoring) - [Revit Tool](https://info.hoffman-hoffman.com/blog/tag/revit-tool) - [Technicians](https://info.hoffman-hoffman.com/blog/tag/technicians) - [UL certified](https://info.hoffman-hoffman.com/blog/tag/ul-certified) - [Water Treatment Systems](https://info.hoffman-hoffman.com/blog/tag/water-treatment-systems) - [Zoning](https://info.hoffman-hoffman.com/blog/tag/zoning) - [ceiling exhaust fan](https://info.hoffman-hoffman.com/blog/tag/ceiling-exhaust-fan) - [chillers](https://info.hoffman-hoffman.com/blog/tag/chillers) - [cooling towers](https://info.hoffman-hoffman.com/blog/tag/cooling-towers) - [designer](https://info.hoffman-hoffman.com/blog/tag/designer) - [drives](https://info.hoffman-hoffman.com/blog/tag/drives) - [eCAPS](https://info.hoffman-hoffman.com/blog/tag/ecaps) - [environmentally friendly](https://info.hoffman-hoffman.com/blog/tag/environmentally-friendly) - [essence](https://info.hoffman-hoffman.com/blog/tag/essence) - [evaporative cooling equipment](https://info.hoffman-hoffman.com/blog/tag/evaporative-cooling-equipment) - [project profile](https://info.hoffman-hoffman.com/blog/tag/project-profile) - [refrigerant](https://info.hoffman-hoffman.com/blog/tag/refrigerant) - [rooftop systems](https://info.hoffman-hoffman.com/blog/tag/rooftop-systems) - [uvdi systems](https://info.hoffman-hoffman.com/blog/tag/uvdi-systems) - [venmar](https://info.hoffman-hoffman.com/blog/tag/venmar) - [ventilators](https://info.hoffman-hoffman.com/blog/tag/ventilators) # Greenheck's Automatic Balancing Dampers ![](https://info.hoffman-hoffman.com/hubfs/calender-icon-black.png) June 23, 2020 ![](https://info.hoffman-hoffman.com/hubfs/ABD-Z1_4inch_Open.png) Automatic Balancing Dampers (ABD) are popular in commercial buildings, as the provide precise and automatic airflow regulation in supply or exhaust ventilation systems. Designed for use in both supply and exhaust applications, the ABD's damper blade automatically adjusts position to account for changing pressures in the duct work. This is valuable as it minimizes energy consumption while also ensuring proper ventilation throughout your building. Watch the video below to learn why ABDs are a unique option in commercial HVAC systems.     **Greenheck's 5 Automatic Balancing Dampers** [ABD](https://www.greenheck.com/products/air-control/dampers/abd) - Damper blade is calibrated to automatically adjust to changing pressures - Pressure: 0.2 in. wg to 2 in. wg - Velocity: 25 cfm to 275 cfm - Temperature: 25°F to 150°F [**ABD-FD**](https://www.greenheck.com/products/air-control/dampers/abd-fd) - Assembly includes an ABD, flanged sleeve, curtain fire damper (FD-150 or FD-350), and an optional grille - UL 555 rated 1.5 or 3 hour static fire damper - Pressure: 0.2 in. wg to 2 in. wg - Volume: 25 cfm to 275 cfm - Temperature: 25°F to 150°F [ABD-GM](https://www.greenheck.com/products/air-control/dampers/abd-gm) - Flanged grille mount box, which allows for the insertion of a standard-depth grille - Pressure: 0.2 in. wg to 2 in. wg - Velocity: 25 cfm to 275 cfm - Temperature: 25°F to 150°F [**ABD-T**](https://www.greenheck.com/products/air-control/dampers/abd-t) - The square transition can be removed and flipped to the other side of the damper using the quick adapter plate - Pressure: 0.2 in. wg to 2 in. wg - Velocity: 25 cfm to 275 cfm - Temperature: 25°F to 150°F [**ABD-Z1**](https://www.greenheck.com/products/air-control/dampers/abd-z1) - Provides on-demand control to ventilation system - Includes a shut-off damper with an electric actuator, automatic balancing damper (ABD), and a plenum box as one assembly - Applications such as; apartments, education buildings, hospitals and assisted living - Pressure: 0.2 in. wg to 2 in. wg - Volume: 25 cfm to 275 cfm - Temperature: 25°F to 150°F [![Click here to learn more about the latest addition ABD-Z1](https://no-cache.hubspot.com/cta/default/6028857/bb5a7daf-fb4b-478a-a6b8-f93b39e54eb4.png)](https://cta-redirect.hubspot.com/cta/redirect/6028857/bb5a7daf-fb4b-478a-a6b8-f93b39e54eb4) ##### // about the author ![Hoffman & Hoffman Marketing](https://info.hoffman-hoffman.com/hubfs/Logos/HH_Symbol_PMS300c_RGB.png) ### ![](https://info.hoffman-hoffman.com/hubfs/user.png) [Hoffman & Hoffman Marketing](https://info.hoffman-hoffman.com/blog/author/hoffman-hoffman-marketing) The marketing department at Hoffman & Hoffman is focused on communicating different commercial HVAC solutions to the industry. We often share manufacturer information to help engineers, contractors, and building owners make informed decisions. ##### // share this post - - - - [mailto:?body=https://info.hoffman-hoffman.com/blog/greenhecks-automatic-balancing-dampers](mailto:?body=https://info.hoffman-hoffman.com/blog/greenhecks-automatic-balancing-dampers) - ### 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./) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Hoffman & Hoffman Marketing", "url" : "https://info.hoffman-hoffman.com/blog/author/hoffman-hoffman-marketing" }, "dateModified" : "2022-04-11T15:58:41.629Z", "datePublished" : "2020-06-23T19:32:49.000Z", "headline" : "Greenheck's Automatic Balancing Dampers", "image" : [ "https://info.hoffman-hoffman.com/hubfs/ABD-Z1_4inch_Open.png" ], "mainEntityOfPage" : { "@id" : "https://info.hoffman-hoffman.com/blog/greenhecks-automatic-balancing-dampers", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://info.hoffman-hoffman.com/hubfs/HH_Logo_RGB.png" }, "name" : "Hoffman & Hoffman, Inc." } } ```