Dear Colleagues,
My university museum recently considered a loan to another campus unit (also a collecting institution, but one without conservation staff) that shuts down their HVAC during all hours they are not open; basically, every night and over university holidays like winter and spring break, most federal holidays, etc. When we asked if they'd be willing to run their air handlers 24/7 while our RH sensitive item was being exhibited there, they said no - that it was too expensive and not environmentally sustainable. We declined to lend to them, at least this time for this object, but now we have a lot of questions.
- Do you know if other museums that house collections are doing this? (We have 24/7 HVAC at our museum.)
- If so, is this becoming more common?
- Is this practice considered sustainable? Are there data to support its benefits?*
- If you've dealt with this in lending, how are you mitigating risks?
Any other thoughts are also welcome.
*The potential borrower has a large building with very big, high, open spaces like an atrium, auditorium, etc. When you look at the temperature and RH trend data for the those spaces, the swings in T and RH are massive, day to night, week to week - it gets really cold (not quite cold enough to freeze their pipes, so they must be sending a bit of heat in the winter...), really dry, really hot, really humid, etc., when their air handlers aren't running. Looking at the graphs, it's hard to imagine this practice is actually saving them energy and money, but maybe there are good general data that show this is indeed the case?
best wishes and thanks in advance for any insights you may be able to share (and if this has already been asked and answered, please just point me there),
Suzanne
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Suzanne Davis (she/her)
President, AIC
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