1. Tl;drMany reports indicate that indoor air quality (IAQ) interventions are likely to be effective at reducing respiratory disease transmission. However, to date there’s been very little focus on the workforce that will implement these interventions. I suggest that the US Heating, Ventilation and Air Conditioning (HVAC) and building maintenance workforces have already posed a significant obstacle to these interventions, and broad uptake of IAQ measures will be significantly hindered by them in the future. The impact will vary in predictable ways depending on the nature of the intervention and its implementation. We should favor simple techniques with improved oversight and outsource or crosscheck technically complex work to people outside of the current HVAC workforce. We should also make IAQ conditions and devices as transparent as possible to both experts and building occupants.To skip my bio and the technical horrors section, proceed to the recommendations in section 4.2. Who am I? Why do I think This? How Certain am I? I began working in construction in 1991. I did a formal carpentry apprenticeship in Victoria BC in the mid-90s and moved to the US in ‘99. Around 2008 I started taking greater interest in HVAC because - despite paying top dollar to local subcontractors - our projects had persistent HVAC problems. Despite protestations that they were following exemplary practices, our projects were plagued with high humidity, loud noise, frequent mechanical failure, and room-to-room temperature differences. This led me to first learn all aspects of system design and controls, and culminated in full system installations. Along the way I obtained a NJ Master HVAC license, performed the thermal work of ~2k light-duty energy retrofits, obtained multiple certifications in HVAC and low-energy design, and became a regional expert in building diagnostics. Since 2010 I’ve worked as a contractor or consultant to roughly a dozen major HVAC contractors and hundreds of homeowners.I’m reasonably certain that the baseline competence of the HVAC workforce is insufficient to broadly and reliably deploy IAQ interventions and that this is a serious obstacle. My comments are specific to the US. I’ve discussed these problems extensively with friends and acquaintances working at a national level and in other parts of the US and believe them to be common to most of the country. The problems are specific to the light commercial and residential workforce, but not domains that are closely monitored by mechanical engineering teams (e.g. hospitals). Based on some limited experience I suspect these problems are also common to Canada, but I’m less certain about their severity.3. Technical Horrors: Why is This so Difficult?Within HVAC, many important jobs are currently either not performed or delegated to people who are largely incapable of performing them. Many people convincingly lie about their capacity to perform a job they’re incapable of, report having done things they haven’t, or even make statements at odds with physics.Examples include:Accurate heat load/loss calculations: These are used to size heating and cooling systems, and in most areas are code mandated for both new and replacement systems. Competent sizing (Manual J [...]
Source:
https://forum.effectivealtruism.org/posts/q7dJz9ZaZGTSZL8Jk/obstacles-to-the-implementation-of-indoor-air-quality
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