The short answer to air cooled vs water cooled ice machine: choose air-cooled when the machine will sit in a room that stays at about 80°F or cooler with a few inches of open space around the vents, choose water-cooled only when the room is hotter than that or too tight for airflow, and choose a remote condenser when you want the heat (and the condenser fan) outside the building. Air-cooled is cheapest to buy, only air-cooled designs (remote included) can earn ENERGY STAR, and remote systems cost the most to install.
Our ice machine sizing guide and small restaurant ice maker picks cover this choice briefly. This guide covers room conditions, clearances, running costs, installation and price gaps between matching models.
Ice machine condenser types at a glance
Every ice machine dumps the heat it pulls from the water through its condenser, and there are three ways to cool it.
| Factor | Air-cooled | Water-cooled | Remote condenser |
|---|---|---|---|
| Where the heat goes | Into the room | Into the drain (or a cooling loop) | Outdoors, usually a roof or wall |
| Best room conditions | About 80°F or less, clean air | Hot rooms or no space for airflow | Hot or small rooms, noise-sensitive areas |
| Extra water for cooling | None | High on single-pass designs | None |
| ENERGY STAR eligible | Yes | No | Air-cooled remote units, yes |
| Extra install work | Power, water line, drain | Plus a condenser water supply and drain | Plus refrigerant line set, outdoor condenser and its own circuit |
| Purchase price (our listings) | Lowest | About $320 to $740 more | Machine near air-cooled price, plus a separate condenser |
Air cooled vs water cooled ice machine: what the room decides
Air-cooled ice machines and ambient temperature
An air-cooled machine uses fans to blow room air across the condenser. The EPA WaterSense at Work guide for commercial ice makers says air-cooled models suit most commercial settings, typically need at least 6 inches of clearance around the air intake and discharge, and are best where the surrounding air stays at 80°F or less. It also notes they run more efficiently in clean air without heavy dust or grease.
That matters in kitchens: a machine beside a fryer line pulls in hot, greasy air and the coil clogs. Clearances differ by model, so check the manual, and never box an air-cooled head into a closed cabinet.
When water-cooled makes sense
A water-cooled machine runs water through the condenser instead of air. The same EPA guide says water-cooled units should only be used when the site needs it: rooms that are consistently above 80°F, or spaces without enough clearance for an air-cooled unit. Think of a closed back room or a hot dish area.
Water use and local restrictions
This is the biggest operating cost difference. In the basic setup, a water-cooled machine passes fresh water through the condenser once and sends it down the drain. EPA WaterSense reports that water-cooled ice makers with single-pass cooling use between 100 and 300 gallons of water per 100 pounds of ice, while air-cooled machines use less than 50 gallons per 100 pounds.
Some cities limit this. New York City Local Law 54 of 2010 bans potable water for once-through cooling and requires ice machines to use air-cooled condensers, recirculating condenser water, or approved non-potable water. It exempts once-through water-cooled ice machines making under 500 pounds per day at standard rating conditions. EPA notes water-cooled machines can instead run on a closed loop through a chiller or cooling tower.
Rules vary by city and water utility, so ask your local building department or water provider before buying a water-cooled unit. A licensed plumber and local code have the final word.
ENERGY STAR only certifies air-cooled commercial ice makers, including self-contained, ice-making head and remote condensing designs. Water-cooled models are ineligible. ENERGY STAR says certified batch-type (cube) machines are about 10 percent more energy efficient and 20 percent more water efficient than standard models; some utilities offer rebates.
Remote condenser ice machines: heat and noise outdoors
A remote system keeps the ice-making section indoors and puts an air-cooled condenser outside. EPA describes remote condensing units as transferring the heat from the ice-making process outside the building. Because the condenser fan is outdoors, its noise is too, a good fit for bars and open kitchens.
The trade-off is installation. A Kold-Draft remote ice maker manual we reviewed shows what is typically involved:
- A refrigerant line set (a liquid line and an insulated discharge line) run through a wall or ceiling between the machine and the condenser.
- A length limit on those lines; that manual says lines over 50 feet are not recommended, and the condenser must sit above the line connections.
- A separate 208 to 230 volt circuit for the condenser fan motor.
- Siting the condenser away from kitchen exhaust fans and the exhaust air of other rooftop equipment.
Limits differ by model, so follow your own manual, and plan on a licensed refrigeration technician and an electrician for the install.
Installation checklist for each type
- All types: correct voltage and phase, a cold water supply line (a filter is a good idea), and a floor drain or drain pump for melt and rinse water.
- Air-cooled: open space around the vents and a plan to clean the condenser coil.
- Water-cooled: a second water connection and drain for the condenser, plus a check of local once-through cooling rules.
- Remote: a roof or wall location for the condenser, a route for the line set, and a separate circuit outdoors.
Price differences on matching Manitowoc models
Manitowoc model numbers usually end in A for air-cooled, W for water-cooled and N for remote, so you can compare the same machine with different condensers. Prices are at the time of writing; output figures come from our product pages.
| Model | Air-cooled | Water-cooled | Remote |
|---|---|---|---|
| IYP0450 (30 inch head) | IYP0450A, $3,945, up to 478 lb per day | IYP0450W, $4,266, up to 464 lb per day | Not listed |
| IYP0800 (30 inch head) | IYP0800A, $6,454, up to 745 lb per day | IYP0800W, $6,913, up to 744 lb per day | Not listed |
| IYT1900 (48 inch, 208V 1 phase) | IYT1900A, $10,430, 1,900 lb | IYT1900W, $11,168, 1,930 lb | IYT1900N, $10,336, 1,830 lb |
| RFF1300 flake (30 inch) | RFF1300A, $8,375, 1,264 lb | RFF1300W, $8,880, 1,365 lb | Not listed |
Water-cooled versions run about $320 to $740 more than the air-cooled version of the same model. The remote IYT1900N is listed slightly below the air-cooled IYT1900A, but the outdoor condenser is a separate purchase; our remote condenser listings, such as the Manitowoc JCF0900-261 at $1,368, run from about $1,368 to $5,580, before line sets and labor. Ask us which condenser and line set a remote model needs before ordering. You can browse the full range on our Manitowoc brand page.
Frequently asked questions
Will an air-cooled ice machine work in a hot kitchen?
It will run, but output falls as the room heats up. Our IYP0450A listing, for example, is rated up to 478 pounds a day at 70°F air and 50°F water, but 413 pounds at 90°F air and 70°F water. EPA guidance says air-cooled units are best where the air stays at 80°F or less; above that, look at a remote condenser or a water-cooled unit.
Are water-cooled ice machines banned?
Not nationally, but some cities restrict single-pass water cooling. New York City bans it for most new ice machines making 500 pounds a day or more. Check with your building department.
Can a remote condenser go on the roof?
Usually, yes. Keep it away from kitchen exhaust, follow the line length and height limits in the manual, and use a licensed refrigeration tech.
Which ice machine condenser type is cheapest to run?
For most sites, an ENERGY STAR certified air-cooled machine, since it uses no cooling water. In a very hot room, a remote unit also keeps condenser heat out of the space your air conditioning has to cool.
Not sure which condenser fits your space? Call The Everything Depot at 866-777-2590, Monday to Friday, 9 AM to 6 PM Pacific, with your room temperature, clearance and daily ice needs. Orders of $999 or more ship free by freight; a $200 flat rate applies below that. For under-bar models, see our undercounter ice maker guide, and for the rest of your setup, the commercial kitchen equipment guide.
