Keeping Your Cold Storage Running

Commercial and industrial refrigeration service for restaurants and facilities in Minneapolis, St. Paul, and surrounding areas

When your walk-in cooler stops holding temperature or a reach-in freezer starts icing over, you need someone who understands commercial refrigeration systems and can respond quickly. Minn Mechanical Contractors LLC installs, maintains, and repairs refrigeration equipment for restaurants, commercial kitchens, and facilities throughout St. Paul. We work with systems that store food, beverages, and temperature-sensitive products that cannot sit warm for long.

Our team handles walk-in coolers and freezers, reach-in units, display cases, ice machines, and specialized cooling applications in St. Paul. Whether you are opening a new location and need a system installed or your current equipment is losing efficiency and costing you product, we provide service that keeps your cold storage operational and compliant with health and safety codes.

If you need refrigeration service in St. Paul and want to schedule an inspection or repair, reach out to Minn Mechanical Contractors LLC.

Preventative Maintenance That Reduces Downtime

We offer scheduled maintenance visits to inspect refrigeration systems, clean condenser coils, check refrigerant levels, and test temperature controls before small issues turn into equipment failures. In St. Paul, seasonal temperature swings put extra stress on refrigeration compressors and condensing units, so regular service helps prevent breakdowns during your busiest months. You get longer equipment life and fewer emergency calls.

After a maintenance visit or repair, you will notice your cooler or freezer holds steady temperatures without cycling constantly, frost buildup disappears from evaporator coils, and your energy costs drop because the system runs more efficiently. Preventative maintenance reduces downtime and product loss by catching worn parts and refrigerant leaks before they cause a shutdown.

We also install new refrigeration systems during restaurant buildouts or facility expansions, sizing equipment based on storage volume and product type. Emergency service is available when a cooler or freezer fails unexpectedly and you need someone on-site quickly to protect inventory. All work follows HVAC-R compliance standards and manufacturer specifications for safety and performance.

Questions About Commercial Refrigeration Service

Refrigeration equipment is critical to daily operations, so it helps to know what maintenance involves and how to avoid costly breakdowns.

How often should I schedule refrigeration maintenance?
You should schedule maintenance at least twice a year, typically before summer and before winter, to prepare your system for high-demand seasons. High-volume operations may benefit from quarterly visits.
What causes a walk-in cooler to lose temperature?
Temperature loss usually comes from refrigerant leaks, dirty condenser coils, failing compressors, or worn door gaskets that let warm air in. We inspect each component to identify the cause and restore proper cooling.
Why does frost build up inside my freezer?
Frost buildup happens when the defrost cycle stops working properly or when the evaporator fan motor fails. Both issues prevent the system from clearing moisture, which freezes on coils and reduces airflow.
What should I do if my refrigeration system fails after hours?
You should call for emergency service as soon as possible to minimize product loss. We respond to urgent refrigeration failures in St. Paul and work to restore cooling quickly so you can keep operating.
How do you size a new refrigeration system?
We calculate the cooling load based on the volume of the cooler or freezer, the type of products stored, and how often the doors open. Proper sizing ensures the system can handle peak demand without running constantly or failing prematurely.

Minn Mechanical Contractors LLC provides refrigeration installation, maintenance, and repair for commercial kitchens, restaurants, and facilities across St. Paul. If your cooler or freezer needs service or you are planning a new installation and want to review your options, get in touch with us to schedule a visit.