I was on a call with a client last week-he's opening a 400-square-meter trampoline park in a building that used to be a warehouse. No existing HVAC. He asked me, "Do I really need to spend money on temperature control? Can't I just open the doors and let the air circulate?"
I told him what I'm about to tell you: you can, but you'll regret it by August.
What happens when it gets too hot
Bouncing is genuinely hard work. A kid can sweat through their shirt in ten minutes. Adults are worse-they push harder and hide their exhaustion until they're sitting against a wall looking pale. If the air inside the park is warm and humid, you get problems fast. Heat exhaustion, dehydration, cranky parents. I've seen parks lose entire birthday parties because the birthday kid overheated and the mom took everyone home early.
But it's not just about comfort. Trampoline mats are sensitive to temperature. Too hot and the material stretches. Too cold and it stiffens. Springs lose tension when the temperature swings wildly. I've seen parks in unheated northern climates where the mats got brittle in winter and cracked under normal use. That's not a warranty issue-that's an environmental issue.
Humidity is another factor people forget. High humidity makes the mats feel damp, even if they're not wet. That changes the bounce feel and makes the surface slightly slippery. Not enough to be obviously dangerous, but enough that experienced jumpers notice.
What kind of systems actually work
There are four main options, and I'll be honest about what I've seen work in real parks.
HVAC systems are the standard. They do heating, cooling, and ventilation in one package. If you're building from scratch or renovating, this is what an engineer will recommend. The problem is cost. A properly sized HVAC system for even a small park runs into serious money. And it requires maintenance-filters, ducts, refrigerants. If you skip maintenance, it fails at the worst possible time.
Evaporative coolers are cheaper to run, but they only work in dry climates. If you're in Arizona or parts of California, they can be effective. If you're in Florida or anywhere with actual humidity, forget it. All you'll do is make the air wetter.
Ductless mini-splits are probably the best option for small parks on a budget. They're relatively affordable, easy to install, and let you control different zones independently. That zonal control matters because the area near the foam pit will feel different from the area near the windows. Mini-splits aren't perfect-they don't move as much air as a full HVAC system-but they handle most small park situations well.
Radiant heating is only for cold climates. It's great for keeping floors warm in winter, but it does nothing for cooling. If you're in Minnesota and your park is in a converted warehouse, radiant heat under the floor can make the space usable in January. But you'll still need something for summer.
What I'd tell you if we were on the phone
First, don't skip this. I've seen too many park owners treat temperature control as an optional expense, and then they're running portable fans and hoping nobody complains. The complaints come. They always come.
Second, think about your local climate before you buy anything. A park in Phoenix needs different equipment than a park in Seattle. Get a local HVAC contractor to look at your space and give you a recommendation. Don't buy a system off the internet based on square footage alone. There are too many variables-ceiling height, window placement, insulation quality, even how many people you expect on a busy Saturday.
Third, budget for ongoing costs. Whatever system you choose, it will cost money to run. That's just reality. Factor it into your pricing. A park that charges too little and then can't afford to cool the space in July is a park that loses customers.
Final thought
Temperature control isn't glamorous. It won't sell birthday party packages or get you on Instagram. But it's one of those invisible things that determines whether your park feels professional or like a warehouse with trampolines in it. Visitors might not notice when it's good. They'll definitely notice when it's bad.
If you're setting up a Small Trampoline Park and want to talk through what equipment you actually need-not what a sales catalog says you need-send me a message. I'll tell you what I know, including what I'd skip if I were you.
No formal references this time. Just several years of fielding calls from park owners who waited too long to fix their air conditioning.