Buying guidance

Walk-In Freezer Systems

Walk-In Freezer Systems
Compare
Pages
Show: 12 24 48
Pages
Show: 12 24 48

Frozen storage is unforgiving. A walk-in freezer system has to pull a box down well below zero, hold it there through deliveries and door openings, and defrost its own coil without letting product warm up. Every package in this category pairs a low-temperature condensing unit with the unit cooler its manufacturer selects for the box, so capacity, defrost and refrigerant are balanced from the start.

Systems are organized by box size, from 6 ft x 6 ft freezers for restaurants and ice cream shops up to 16 ft x 20 ft boxes for grocers and distributors. Each size category is built around an 8 ft ceiling and a -10°F room. Equipment comes from Bohn, Larkin and other trusted refrigeration brands, with R-448A and lower-GWP R-454A options and single-phase or three-phase 208/230V power on most sizes.

Choosing the Right Walk-In Freezer System

Start with the inside dimensions of the box and pick the matching size category. Then confirm the ceiling height. Taller ceilings, a box in a hot kitchen, heavy door traffic or product that arrives soft rather than hard-frozen all add load, so step up a size if any of those apply.

Defrost is the big difference from a cooler. Freezer unit coolers use electric heaters or hot gas to clear ice from the coil several times a day, and the drain line needs a heater so melt water does not refreeze. Check each listing for the defrost type and the electrical requirements for the heaters, which are often larger than the condensing unit itself.

Finally, check the building power and plan the condensing unit location. Outdoor and rooftop locations are common. Indoor locations need enough ventilation to remove the heat the unit rejects.

Buying Tips

  • Do not reuse a cooler system. Medium-temperature equipment cannot hold freezer temperatures.
  • Plan the electrical. Defrost heaters and the condensing unit may need separate circuits. Confirm voltage and phase before ordering.
  • Protect the floor. Freezers need an insulated floor. Without one, ground moisture can freeze and heave the slab.
  • Keep the system matched. Buy the condensing unit and unit cooler as the pair the manufacturer selected.
  • Choose the refrigerant deliberately. R-448A is widely serviced. R-454A is a lower-GWP A2L refrigerant. Rules vary by region, so confirm what applies.

What Comes in a Walk-In Freezer System

Each package includes a low-temperature condensing unit and a matched unit cooler with defrost. Many systems include a defrost timer or electronic controller. Controls, valves and accessories vary by model and are listed on each product page.

What It Takes to Install a Walk-In Freezer System

Installation should be done by a licensed refrigeration contractor with EPA Section 608 certification. Beyond the usual line sets, brazing, evacuation and charging, a freezer needs a heated and trapped drain line, correct defrost settings and a pressure relief port in the box so the door does not lock from vacuum after defrost.

Things You Should Know Before You Buy

Local building, electrical and energy codes apply and vary from place to place, so check with your contractor or local building department. Door heaters, gaskets, strip curtains and panel seals have an outsized effect on freezer performance, because every leak brings in moisture that becomes ice on the coil.

Frequently Asked Questions

Q: How do I know what size walk-in freezer system I need?

A: Measure the inside length, width and ceiling height, then shop the matching size category. Each category is sized for an 8 ft ceiling at -10°F. If the ceiling is taller, the box is in a hot area or the door is used constantly, choose the next larger size.

Q: Why do walk-in freezers need defrost?

A: Moisture that enters the box freezes onto the evaporator coil. Without regular defrost the coil blocks with ice and the box warms up. Freezer unit coolers use electric heaters or hot gas to clear the coil on a schedule.

Q: Is the unit cooler included?

A: Yes. Every system in this category includes the low-temperature condensing unit and the matched unit cooler.

Q: Can a walk-in freezer system run a cooler?

A: It is not recommended. Freezer equipment is selected and controlled for low temperatures. Shop our walk-in cooler systems for boxes held above freezing.

Q: Does the freezer drain line need a heater?

A: Yes. Defrost water has to leave the box before it refreezes, so freezer drain lines inside the box are heat-traced and trapped outside the box.