“It’s just a hot equipment room – get a bigger fan.” That was my boss’s direction in late 2023. Eight months, two vendors, and one near-meltdown later, I understood why you don’t spec industrial cooling like you buy a bathroom fan.
Let me back up. I’m the office administrator for a mid-sized food processing facility – about 200 employees across two buildings. My job includes managing all facility service orders, roughly $150k annually across maybe 12 vendors. I report to both operations and finance, which means I’m constantly balancing “make it work” with “prove every penny.”
In October 2023, operations flagged a problem: a small process room where we stage ingredients was hitting 95°F on production days. The room isn’t huge – maybe 400 square feet – but it houses mixing equipment that generates heat. The existing wall unit couldn’t keep up.
My boss said, “Just get a powerful hand fan or an industrial floor fan. Something with high CFM. Problem solved.”
I nodded. Honestly, I didn’t know enough to argue. I’d bought plenty of bathroom fans for office renovations, and I assumed “industrial cooling” was just bigger, louder versions of the same thing. That assumption cost me two months and a lot of stress.
I went online and searched for “high CFM fan.” I found a massive floor fan – 24 inches, 10,000 CFM – for about $400. Looked like something you’d see in a warehouse. I ordered two.
When they arrived, I felt pretty good about myself. I plugged them in, positioned them to blow across the equipment, and waited for the temperature to drop.
It didn’t.
Here’s the thing: moving air across hot equipment doesn’t remove heat if the room has no exhaust path for that hot air. The fans just circulated hot air in a closed loop. The equipment kept heating, and the room stayed at 93-95°F. I’d basically created a convection oven.
So glad I bought two of them. Almost bought three.
I called a vendor I’d used for HVAC maintenance. The guy who answered (let’s call him Tom – been in the trade 30 years) listened to my story and asked one question: “Are you trying to cool the room, or cool the equipment?”
I didn’t know the difference.
Tom explained it simply: “If you’re cooling the room, you need a system that removes heat from the space – basically air conditioning or evaporative cooling. If you’re cooling equipment, you need a system that pulls heat directly from the process and exhausts it. Moving air without expelling heat just makes a noisy room with hot air.”
He then mentioned something that changed my entire approach: “Look, if you’re serious about this, you should talk to someone about a heat exchanger setup, or look into evaporative cooling for the process. Munters makes units that do exactly this – they’re not cheap, but they work.”
That was my real moment of education. I’d never heard of Munters. I didn’t know heat exchangers came in configurations suited for small process rooms. I thought “evaporative cooling” was only for large data centers.
“An informed customer asks better questions and makes faster decisions.” — I’ve learned to believe this now.
I spent about two weeks researching. Here’s what I learned – simplified for anyone like me who’s not an engineer.
Works great, but expensive to install in a room that wasn’t designed for it. Ductwork, refrigerant lines, condensate drainage – our layout couldn’t accommodate it without major renovation.
This is where I landed. Unlike direct evaporative coolers that add humidity, indirect evaporative cooling uses a heat exchanger to cool the supply air without adding moisture. For a food processing room where humidity control matters (ingredients, product quality), that was critical.
The Munters units I looked at (specifically their Oasis series for industrial process cooling) use a combination of evaporative media and heat exchangers. They pull outdoor air, cool it through evaporation on one side of the heat exchanger, then pass the process air on the other side – getting the cooling benefit without introducing humidity.
It’s basically a munters heat exchanger in action. The heat exchanger separates the two air streams, so the process air stays clean and dry while the exhaust air handles the moisture.
Munters also makes desiccant dehumidifiers, which would work if humidity was our primary issue. But in our case, the main problem was sensible heat from equipment, not moisture. So indirect evaporative made more sense.
We don’t have a data center budget. Munters evaporative cooling costs less to install and operate than a traditional chiller system, and for our moderate climate (not too humid, not too dry), it was the sweet spot.
In mid-2024, we installed a Munters OEM evaporative cooling unit – basically a self-contained air handler with an indirect evaporative section and a heat exchanger. It was installed through an exterior wall, so no ductwork needed in the room itself.
The room dropped from 95°F to 78°F within an hour. The equipment stayed cooler because we were actively removing heat from the space, not just moving air around.
Here’s the best part of actually fixing this right: no more morning panic calls from production about room temperature. No more emergency portable fan rentals. No more explaining to finance why we spent $400 on equipment that didn’t work.
Total project cost: about $8,500 installed. That’s nothing compared to the downtime risk and product quality issues we were flirting with. Energy consumption runs about 60% lower than a comparable compressor-based system (based on our utility data for July-September 2024 – your mileage may vary depending on climate).
If you’re reading this and you’re in a similar position – maybe you’re the person who has to “figure out cooling” for a small industrial space – here’s my short list:
I’d rather spend 10 minutes explaining options than deal with mismatched expectations later. That’s true whether you’re buying office supplies or industrial cooling equipment. An informed customer asks better questions and makes faster decisions.
Now when I see someone spec a “high CFM fan” for a hot room, I send them a link to a Munters evaporative cooler and say, “Trust me on this one.”
Pricing as of January 2025. Verify current Munters product specifications and pricing at munters.com – their product lineup evolves quickly.