How to Install an Undercounter Ice Maker with Drain

By Antarctic-Star Wine Cabinet Beverage Refrigerator Ice Maker | Published: 2026-10-23

Category: How-to Guides

Learn how to install an undercounter ice maker with drain, including plumbing, leveling, and drainage tips. Avoid common mistakes with our step-by-step guide.

Quick Answer

To install an undercounter ice maker with drain, you need a dedicated water supply, a proper drain connection, and a level, ventilated space. Follow the steps below to ensure a leak-free, efficient installation.

Why Drainage Matters for Undercounter Ice Makers

Unlike portable ice makers that you empty manually, an undercounter ice maker with drain continuously removes melted ice and excess water. A proper drain prevents overflow, reduces odors, and keeps the machine running efficiently.

If you don't have a floor drain, you can use a condensate pump to lift the drain water to a sink or standpipe. This is a common solution for kitchens without a floor drain.

Choosing the Right Location

Undercounter ice makers need a level surface and good airflow around the condenser. Leave at least 2 inches of clearance on all sides for ventilation. Avoid placing the unit near heat sources or in direct sunlight.

Ensure the location has access to a water supply line (typically 1/4-inch copper or braided tubing) and a drain connection. If you're installing under a counter, check that the cabinet opening matches the unit's dimensions.

Step-by-Step Installation Guide

Prepare the Space and Check Dimensions: Measure the cabinet opening and confirm it matches the ice maker's dimensions. Ensure the floor is level and the area has proper ventilation. If the floor is uneven, use a level to adjust the unit's feet. A common mistake is skipping the level check, which can cause the unit to vibrate and produce uneven ice.
Connect the Water Supply Line: Turn off the water supply. Connect a 1/4-inch copper or braided stainless steel line to the unit's water inlet valve. Use a compression fitting and tighten securely. Slowly turn on the water and check for leaks. Always use a shut-off valve for easy maintenance. A common mistake is over-tightening the fitting, which can crack the valve.
Install the Drain Line: Attach a drain hose to the unit's drain outlet. Route it to a floor drain, standpipe, or condensate pump. Ensure the hose has a continuous downward slope to prevent water from pooling. A common mistake is creating a loop or kink in the drain hose, which can cause backups and overflow.
Level the Ice Maker: Use a carpenter's level on top of the unit. Adjust the front and rear legs to make it level side-to-side and front-to-back. This ensures proper water flow and ice production. An unlevel unit can cause the compressor to work harder and shorten its lifespan.
Plug In and Test: Plug the unit into a grounded outlet. Wait for the water line to fill, then run a test cycle. Check for leaks at all connections and verify that the drain is working properly. Run the test cycle for at least 24 hours before relying on it for daily use. This reveals any hidden leaks or drainage issues.

Product Facts

Antarctic Star 80Lbs/24H Undercounter ice Machine with 28Lbs Ice Storage Capacity: The Antarctic Star 80Lbs/24H Undercounter Ice Machine produces 80 lbs of ice per day and stores up to 28 lbs. This capacity suits busy kitchens or small businesses, but you'll need a drain to handle the meltwater from frequent use.
Antarctic Star 80Lbs/24H Undercounter ice Machine with 28Lbs Ice Storage Capacity