We've spent this week writing about heat and milk supply, and about heat and transport. The third place summer weather shows up, and the one members ask us about least until it's already a problem, is the aging room itself.
A cave built to hold 50–55°F and 80–95% humidity doesn't stop working in a heat wave, but it works harder, and a compressor running near its limit all day is a different machine than the one you tuned in April. Members who've been through a few summers with an aging room tell us the failures are rarely dramatic. They're a slow drift: a degree or two of creep on the warm end of your daily swing, a humidity reading that's technically in range but trending down as the compressor cycles more to fight the heat. By the time it shows up in the cheese, it's been happening for a week or two already — the surface dries faster than the interior can keep up with, a rind hardens a little early, or a bloomy wheel starts to slip where it should be holding its shape.
What to actually check this month
- Log twice a day, not once. A single morning reading can look perfectly normal while missing an afternoon spike that's happening every day the outside temperature peaks. If you're not already logging a morning and an evening reading, this is the month to start.
- Watch humidity as closely as temperature. A compressor working overtime tends to pull moisture out of the air as a side effect of cooling harder, and a cave that drifts dry will show it on your rinds before it shows on your thermometer — a natural rind that should be tacky starts looking chalky, a washed rind dries out between washes faster than it should.
- Give your door discipline a second look. Every door opening in a heat wave is a bigger heat load than the same opening in October, because the temperature differential is larger. If your crew has been in and out of the cave more than usual — pulling extra product for the July retail push, say — that traffic is doing more damage to your climate than it would most other months.
- Know your compressor's real capacity, not its rated capacity. A unit sized for your room five summers ago may be working near its ceiling now, especially if you've added inventory or the building around it has aged. If your compressor is running close to constantly rather than cycling, that's worth a service call before it fails outright in August.
- Have a plan for a short outage, not just a hot day. This month a regional grid operator issued an emergency order asking large users to curtail non-essential load during the worst of the heat, and utilities elsewhere have leaned on similar requests. A cave that loses power for even an hour during peak heat can lose more ground than the same outage would cost it in October. If you don't already know how long your cave holds temperature with the compressor off, this is worth testing on a mild day before you're forced to learn it on a hot one.
- Keep a low-tech backup on hand. Several members swear by a simple tray of ice or a saturated salt solution as a stopgap on the worst days — not a substitute for a working compressor, but a way to buy a few hours of stability if a unit trips or a utility asks you to cut back.
Where this connects to a credential
This is exactly the territory the federation's Affinage Fundamentals course spends real time on — not just what humidity and temperature a given style wants, but how to read a drifting log before it becomes a batch problem, and when a cave's mechanical limits mean the fix is equipment, not technique. It's a useful course to revisit even for members who've been aging cheese for years; the fundamentals of a stable environment don't change, but most of us learned them under normal weather, and this isn't a normal July.
If your cave has come through a rough stretch this summer, or you've found a fix worth sharing, the Education Committee is always glad to hear what's working — member solutions tend to be more useful than anything we could write from a desk.
The International Cheese Federation (ICF) and More Cheese are entirely fictional. This post is demonstration content created for MemberJunction. All people, organizations, events, courses, certifications, figures, and quotations in it are invented, and nothing here represents a real association, a real business, a real person, or real professional advice.