Undercounter Ice Machine

Undercounter Ice Machines for Commercial Use

Undercounter ice machines are designed for foodservice operations that need compact, efficient ice production with built-in storage and easy access during service.

These commercial ice machines are commonly used in bars, coffee shops, and small kitchens where space is limited but consistent ice supply is critical.

Compare all available options in our full selection of commercial ice machines to find the right unit for your operation.

Best Uses for Undercounter Ice Machines

• Bars and cocktail stations
• Cafés and coffee shops
• Small restaurants and kitchens
• Food trucks and mobile operations
• Supplemental ice production for larger kitchens

Compare Ice Machine Options

• Commercial Ice Machines
• Commercial Nugget Ice Machines
• Hotel Ice Machines
• Atosa Ice Machines

Ice Machine Buying Resources

• Best Ice Machines for Bars
• Commercial Ice Machine Guide
• Ice Machine Performance Guide

Frequently Asked Questions About Undercounter Ice Machines

What is an undercounter ice machine?

An undercounter ice machine is a compact, self-contained commercial ice maker designed to fit beneath a standard counter. Unlike modular systems that require a separate ice bin and head unit, an undercounter machine combines ice production and storage in a single unit. This makes it ideal for bars, cafés, and small kitchens where floor space is limited but a reliable, on-demand ice supply is essential. Most commercial undercounter models are NSF certified and built to meet health department standards for foodservice use.

How much ice can a commercial undercounter ice machine produce per day?

Production rates vary by model, but most commercial undercounter ice machines produce between 50 and 400 pounds of ice per day. As a general guide: cafés and light-use operations typically work well with units in the 50–150 lb/day range, most bars and small restaurants fall in the 150–300 lb/day range, and high-volume operations may need units producing 300–400+ lbs/day. Keep in mind that rated production is measured under ideal conditions — high ambient temperatures or warm incoming water will reduce output. Always size up by 20–30% to handle peak demand during a busy service.

What is the difference between ice production capacity and ice storage capacity?

These are two separate specs and both matter. Ice production capacity is how many pounds of ice the machine can make in a 24-hour period under ideal conditions. Ice storage capacity is how much ice the bin can hold at any given time — and it is always lower than the production number. If your bin fills up and ice isn't being used fast enough, the machine pauses production until space opens up. For operations with rush periods like a dinner or happy hour surge, storage capacity is often the more critical number to pay attention to.

What type of ice does an undercounter ice machine make?

Most commercial undercounter units produce full or half-dice cube ice, which is the standard for cold beverages, cocktails, and general foodservice use. Some models produce nugget ice (also called pellet or Sonic-style ice), which is softer, chewable, and popular in healthcare settings, cafeterias, and casual dining. Flake ice is less common in undercounter form but is used for seafood displays and salad bars. The ice type is fixed at the time of purchase, so make sure you're choosing the right shape for your operation before you buy.

What is the difference between air-cooled and water-cooled undercounter ice machines?

Air-cooled units use a fan to pull in ambient air and dissipate heat — they are the most common choice because they are easier to install, require no additional water connections for the cooling system, and cost less to operate in most environments. They do require adequate ventilation clearance (typically 6 inches around the intake and exhaust). Water-cooled units use a dedicated water line to dissipate heat instead of air. They perform better in hot, enclosed, or dusty environments where airflow is restricted, and they run quieter — but they use significantly more water and may be restricted by local utility regulations. For most bars, cafés, and small restaurants, air-cooled is the right starting point.

Do undercounter ice machines need a drain?

Yes, most commercial undercounter ice machines require a floor drain or a gravity drain line connection. As ice melts in the storage bin, the water has to go somewhere — without a drain, it will overflow. The drain connection is usually a standard gravity line running to a floor drain nearby. Some models allow for a pump-assisted drain if a gravity drain isn't available, but that adds cost and a potential maintenance point. Before purchasing, confirm your installation location has drain access — this is one of the most commonly overlooked requirements.

What electrical requirements do undercounter ice machines have?

Most smaller commercial undercounter units run on a standard 115V / 15-amp circuit, similar to a typical kitchen outlet. Higher-capacity models producing 200 lbs/day or more often require a 208–230V dedicated circuit. Always check the spec sheet for the specific model you're considering before installation — running the wrong voltage can damage the unit and void the warranty. A dedicated circuit is strongly recommended for any commercial ice machine to avoid tripping breakers during peak operation.

How much space does an undercounter ice machine need?

Standard commercial undercounter models are typically 22–30 inches wide, 22–26 inches deep, and 32–38 inches tall — designed to fit under a standard 36-inch counter. Measure your available width, depth, and height carefully, including the counter overhang, before purchasing. Beyond the unit dimensions, air-cooled models need ventilation clearance — usually 6 inches around the air intake and exhaust sides. Blocking ventilation is one of the most common causes of poor performance and premature compressor failure. Also measure the path from your delivery door to the installation location to make sure the unit fits through doorways and around corners.

Do I need a water filter for my undercounter ice machine?

A water filter is not always required, but it is strongly recommended for any commercial installation. Unfiltered water with high mineral content causes scale buildup inside the evaporator and water lines, which reduces production efficiency, forces more frequent cleaning cycles, and shortens the lifespan of the unit. A filter also improves ice clarity and taste — cloudy or off-tasting ice is often a water quality issue. Most manufacturers recommend replacing the filter every six months or after every 1,500–2,000 gallons, and some warranties are conditioned on using a compatible filter system.

How often do commercial undercounter ice machines need to be cleaned?

The FDA and most health departments recommend cleaning commercial ice machines at least every six months — but in practice, most busy foodservice operations should clean every three months. Cleaning involves sanitizing the interior bin, evaporator, and water distribution system to prevent slime and mold buildup, which can contaminate ice. Hard water environments may require more frequent descaling as well. Many commercial models include a built-in cleaning mode that simplifies the process. Keeping a cleaning log is a good practice for health inspections. Neglecting cleaning is the leading cause of ice machine failures and health code violations.

Can an undercounter ice machine be used outdoors or in a garage?

Standard commercial undercounter ice machines are designed for indoor, climate-controlled environments. Most require ambient temperatures between 50°F and 90°F to operate correctly — outside that range, production drops significantly or the unit stops working altogether. If you need ice production in an outdoor bar, patio, or food truck setting, look specifically for units rated for outdoor use or built with weatherproof enclosures and corrosion-resistant components. A standard indoor unit placed in a garage, unventilated back room, or outdoor bar without climate control will underperform and likely fail prematurely.

What is the difference between a modular ice machine and an undercounter ice machine?

A modular (or remote) ice machine is a head unit only — it produces ice but does not include a storage bin. It is designed to sit on top of a separate, purchased ice storage bin or a dispenser, and these systems are built for high-volume operations that need hundreds to thousands of pounds of ice per day. An undercounter ice machine is self-contained: it makes ice and stores it in the same unit, which is what makes it compact and easy to install in tight spaces. For most bars, cafés, and small restaurants, an undercounter unit is the right choice. If you're running a hotel, large restaurant, or catering operation with very high daily ice demand, a modular system may be more appropriate.

How do I calculate how much ice my operation needs per day?

A reliable rule of thumb by operation type: bars and cocktail stations typically use 1.5–3 lbs of ice per drink, which adds up to 150–300+ lbs on a busy night. Full-service restaurants generally need 1–1.5 lbs per seat per meal period. Cafés and coffee shops with blended drinks may need 50–150 lbs per day. Hotels calculate around 5 lbs per guest room per day. When in doubt, calculate your peak-hour demand first, then multiply by your operating hours and add a 20–30% buffer for hot weather, unexpected volume, and machine efficiency loss. It is always better to have slightly more capacity than you need than to run short during service.

Are commercial undercounter ice machines NSF certified?

All commercial undercounter ice machines sold for foodservice use should carry NSF/ANSI 12 certification, which is the standard for automatic ice-making equipment. This certification confirms the unit is designed and built to meet sanitation and food safety requirements for commercial kitchens. Most models also carry ETL or UL listing for electrical safety. When purchasing, verify that the unit has current NSF certification — this is typically required by health departments for commercial kitchen inspections and may be required by your local building code as a condition of your operating permit.

What should I look for in a warranty on a commercial undercounter ice machine?

Most commercial ice machine warranties are split across three components: parts (typically 1–3 years), labor (typically 1 year), and the compressor (typically 3–5 years). The compressor is the most expensive component to replace, so a longer compressor warranty is a meaningful sign of manufacturer confidence. Read the fine print carefully — many warranties require professional installation, use of approved water filters, and documented cleaning and maintenance to remain valid. Also confirm whether warranty service is handled through local authorized technicians or requires shipping the unit, which matters if you're in a smaller market.