As response to the coronavirus (COVID-19 or SARS-CoV-2) pandemic, REHVA experts drafted a guidance document on how to operate and use building services in areas with a coronavirus outbreak to prevent the spread of COVID-19 depending on HVAC or plumbing systems related factors. This REHVA document has been updated (as of 3 April) and considers the best available evidence and knowledge to date, utilizing an ongoing Dutch literature review elaborated by dr. Francesco Franchimon, complemented by international REHVA experts as a joint effort. Due to the ever-changing information about the disease, the document will be updated and complemented with new evidence when it becomes available. REHVA thanks the co-authors of this document for their much-appreciated contribution. On April 3, the REHVA COVID-19 guidance document from March 17 has been updated with the following revisions and additions:
- Latest information on the airborne transmission and implications to HVAC systems was added;
- Ventilation continuous operation guidelines were updated to be explicit;
- SARS-CoV-2 stability data at different temperatures and relative humidity was added;
- Heat recovery equipment guidance was revised including the recommendation of inspection;
- Guidance for room level circulation units was complemented;
- HVAC maintenance personnel protection recommendation was added;
- A summary of 14 points of practical measures for building services operation was added.