If you’ve ever laced up skates for a casual skate or watched a hockey playoff game, you’ve probably never stopped to think about what keeps that ice hard and smooth enough to zip across at 20+ mph. For me, as a chiller unit supplier, that’s exactly where the magic happens — and where so many venue owners get tripped up when picking the wrong gear for their ice rink. Chiller Unit
Let’s cut to the chase: ice rink chillers aren’t the same as the AC unit in your apartment. Yeah, they both move heat, but a rink’s chiller has to handle way more stress, way different conditions, and do it 24/7 during peak season. I’ve seen people try to grab a standard commercial chiller because it’s cheaper, only to end up with ice that’s too soft, high energy bills, or a unit that breaks down mid-season. If you’re in the market for a rink chiller, here’s what you actually need to prioritize — no jargon, just real talk from someone who installs these units for a living.
First up: load matching, and I don’t mean just “bigger is better.” Wait, hear me out. A rink’s ice load isn’t static. Let’s break that down. When you first pour the ice, you’ve got a huge amount of water to freeze — that’s a high initial load. Once the ice is set, you’ve got to maintain it, but you also have to account for all the heat that leaks in from the building above, the bodies of people on the ice, even the sun beating through skylights. If your chiller is sized to the initial freeze, it’ll run nonstop to maintain ice once it’s set, wasting energy and wearing it out fast. If you size it for maintenance, it’ll take forever to freeze that first layer, ruining your opening timeline. The sweet spot? A unit with a variable speed compressor. Yeah, I know variable speed sounds fancy, but it’s just a compressor that adjusts its output instead of only running full blast or turning off. It matches the chiller’s capacity to what the rink actually needs, so you’re not throwing energy away when you don’t have a crowd or a strong sun. I recommend working with a supplier (that’s me, hint hint) to do a site load calculation, not just pick a random BTU number. I’ve seen rinks that sized their chiller wrong end up with $10k+ a year in extra energy costs — that’s a huge miss.
Next, heat rejection. This is one of the most overlooked parts of rink chillers, and it’s such a big one. Your chiller moves heat from the rink’s glycol loop (that’s the stuff that actually freezes the ice, by the way) to the outside air. If your heat rejection system (usually a condenser, but sometimes a cooling tower if you’re in a super hot, humid area) can’t get rid of that heat, your chiller won’t work. Let’s say you’re in Florida, where summer temps hit 95°F and humidity is through the roof. A standard air-cooled condenser will have a hard time dumping heat when the air is almost as warm as the glycol loop. That means your chiller will trip on high discharge pressure, shut off, and your ice will start to melt. For humid, warm climates, you almost always need a water-cooled condenser with a cooling tower — it’s more efficient at dumping heat when the air is thick with moisture. If you’re in a colder place like Minnesota, an air-cooled unit works fine, but you’ve got to make sure the condenser has a crankcase heater to keep refrigerant from getting too cold in winter — otherwise your compressor will seize up and die. I’ve had so many customers call me at 2 a.m. in January with a broken chiller because they skipped that heater. Don’t be that guy.
Then there’s the glycol loop — wait, is the chiller responsible for that? Kind of, but you need your chiller to play nice with the glycol. Glycol is the antifreeze that flows through pipes under the ice to keep it frozen, right? It’s usually a mix of propylene or ethylene glycol and water. For a rink, you need a glycol mix that’s 30-40% glycol — any less and it’ll freeze solid in the pipes, any more and it’s too thick to move, making your chiller work way harder. But the chiller itself has to be rated to handle that glycol. If you pick a chiller designed for water, not glycol, the hoses and seals will corrode fast, and you’ll have leaks. Also, the chiller’s evaporator has to be a shell-and-tube design, not a plate style. Shell-and-tube is way more durable for glycol, which is corrosive over time, and easier to flush out when you need to change the mix. Plate evaporators are cheaper, but they get clogged with glycol sediment super fast and have to be replaced every couple years. That’s a cost you don’t want to deal with.
Now, reliability — let’s be real, a rink can’t shut down mid-season. Think about a high school hockey team that’s gunning for the state championship, or a public skate session that draws 500 people a day. If your chiller breaks, you lose money, you upset customers, and you’ve got to scramble to fix it fast. So what makes a chiller reliable? First, good compressors. I don’t cut corners here — I use Copeland or Trane compressors, not off-brand ones that die after 3 years. Off-brand compressors might be $500 cheaper upfront, but if they break mid-season, you’re looking at $2k+ in emergency repairs plus lost revenue. Second, redundant controls. Wait, what’s that? Basic controls will shut the chiller off if one sensor glitches. Redundant controls have a backup sensor, so if one fails, the other takes over. That’s a small upgrade that prevents so many breakdowns. Also, easy access to parts. If your chiller needs a new valve or a filter, you shouldn’t have to wait 3 days for a specialty part. Make sure your supplier (yours truly) stocks common parts, or can get them next-day. I’ve had customers go with a cheap imported chiller and then wait a week for a replacement compressor — that’s a death sentence for a rink.
Energy efficiency is huge too, especially with rising utility costs. I’ve had a customer last year who switched from an old, inefficient chiller to a new variable speed model and cut their energy bills by 40% in the first year. That’s thousands of dollars back in their pocket. How do you measure efficiency? Look for the EER (Energy Efficiency Ratio) rating — the higher the EER, the more efficient the unit. But don’t just go by the EER on the label, because that’s tested in perfect lab conditions. Ask your supplier for the IPLV (Integrated Part-Load Value), which measures efficiency at different loads (so when you’re not running the chiller at full blast, which is most of the time). A chiller with a high IPLV will save you way more money over its lifespan than a cheap, low EER unit. Also, make sure the chiller has a digital controller that lets you set different temperatures for peak and off-peak times. For example, if your rink is busy at night, you can set the ice temp a little lower for better skating, and during the day when it’s empty, you can raise it a degree or two to save energy. That’s a simple feature, but it adds up fast.
Wait, let’s not forget ice quality. At the end of the day, the whole point of the chiller is to make good ice. What makes ice good? It’s smooth, hard, doesn’t have air bubbles, and stays consistent temperature. If your chiller isn’t maintaining a steady glycol temp, you’ll get ice that’s soft in some spots and hard in others, or ice that gets foggy because the glycol fluctuates too much. A good chiller will keep the glycol temp within ±0.5°F, which is exactly what you need. If your chiller’s temp swings by 2°F, you’re going to have issues. Also, if the chiller has a constant flow of glycol, you won’t get hot spots under the ice from stagnant water. I’ve seen rinks where the chiller had a bad pump, so glycol would pool in one spot, melt the ice, and create a hole that someone could trip over. Not good.
Another thing: size and space. Rinks don’t usually have a lot of extra room for chiller units, especially if they’re in an old building. You need to make sure the chiller fits through your doors, has enough space around it for maintenance, and that the weight on the roof (if you’re putting it outside) doesn’t exceed your building’s capacity. I once had a customer who tried to stuff a chiller into a small utility closet, only to find out the door was too narrow, and they had to pay extra to modify the door — that’s a headache no one wants. I always do a site visit before selling a unit to make sure it fits, no surprises.
Wait, what about rinks that are retrofitting? A lot of old arenas are replacing their chillers instead of building new, and they have different needs. If you’re retrofitting, you might have existing pipes, so you need a chiller that connects to your old loop, but you also have to make sure the new chiller’s output matches the old pipes’ capacity. Sometimes old pipes are corroded, so you have to flush them before installing the new chiller — that’s a step a lot of people skip, and it ruins the new unit. I always include a pipe flushing service with new chiller installations for retrofits, because it saves you from having to replace a new chiller a year later.
Let me wrap this up with a real example. Last year, I worked with a community rink in a small town. They were using a 10-year-old air-cooled chiller that kept breaking, and their energy bills were $12,000 a year. They tried a cheap new chiller from a big box supplier that died after 18 months. We installed a variable speed, water-cooled chiller sized correctly for their load, with a shell-and-tube evaporator, redundant controls, and crankcase heaters. Their energy bills dropped to $7,000 a year, and they haven’t had a breakdown since. That’s the difference between picking the right chiller and the wrong one.
If you’re a rink manager, arena owner, or someone who’s in charge of buying a new chiller, don’t make the mistake of going for the cheapest option. A chiller is a big investment — it’s the backbone of your rink, and it needs to work reliably for 15-20 years. If you’re not sure what size or type you need, feel free to reach out and chat. I’m happy to walk through your site, answer questions, and give you a quote that works for your budget. No hard sell, no fine print — just real advice from someone who’s been installing these units for years.
References
Commercial Ice Maker ASHRAE Handbook—HVAC Applications (2023)
International Institute of Amusement and Attraction Parks (IIAAP) Ice Arena Equipment Guidelines (2022)
Air-Conditioning and Refrigeration Institute (ARI) Standard 550 (2021)
Zhejiang Xuanyuntong Refrigeration Technology Co., Ltd.
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