What is a walk-in cooler or freezer?

A walk-in cooler and freezer is a definitive modular cold cabin /compartment to refrigerate or freeze goods stocked inside.

Walk-in cooler is a broad insulated area with an entrance door big enough that people could come in.

The storage temperature could be -5°C to -20°C. They are generally Built-ins from prefabricated walls, ceiling/top ,ground, panels, doors and refrigeration system. The refrigerant continuously circulates from the compressor to the condenser into the expansion device around the operator and back to condenser.

Technology options for this sort of refrigerators include improved insulation, higher efficiency compressors, fan motors, heat exchangers and fan acceleration control.

These walk-in coolers and freezers could handily disband and reassemble if obliged to shift at different locations. these coolers have years of experience for a vast variety of uses in industries.

Parts of Walk-in Coolers or Freezer

Refrigeration system:

The major types of walk-in coolers are;

  • Pre-assembled remote:

    This refrigeration is also known as split system consisting of two coils, one inside the cooler freezer and other in the condensing unit for outdoor, or near in the walk-in cooler. Normally this system is inducted outside of the installation. It mandates a licensed refrigeration contractor to induct the system and run lines.

  • Self-contained refrigeration system:

    It contains coils and condensing unit all in one, that is installed on the ceiling or in the walls of walk-in cooler. It contains coils and condensing unit all in one, that is installed on the ceiling or in the walls of walk-in cooler.

  • Top mount refrigeration system:

    It is a subcategory of self-contained and reassembled remote systems in which an evaporator coil may hang down inside the wall of a walk-in cooler.some coils may be placed on ceiling of the box for more space inside. It outflows heat, adding a strain/ tension on indoor HVAC system. it also should be initiated by an eligible technician.

  • Sidemount refrigeration system:

    It is mounted on side panel of the cooler with bolts and brackets. It has an internal evaporator coil that creates less interior self-space. It is considerable for a low ceiling setting.


There are sliders that are a mutual choice for a walk-in cooler. The doors can all be shut suitably that sealed cold air. With a sliding door you can secure the air significantly.

Another option stands swinging doors, an alternator for a walk-in cooler. Distinct to sliding doors, swinging doors use a sweep at the bottom of the door to help to prevent external air from reaching the walk-in cooler and secure the inner air.

Walk-in coolers and freezer doors do open and close continuously, which results in condensation which can form the ice. To prevent condensation from coolers, doors are built-in with the heater cord element to avoid precipitation and formation of icing on the door frame.


A walk-in freezer almost always in need of insulated floors. If you're setting to bring heavy loads to your cooler you should need to assemble an insulated floor for strengthening your refrigeration to work effectively.

You are obliged to have fundamental evidence that the flooring is safe and sterile. your flooring does not impart all over the cooler but to contribute a secure relation to food or goods you stocked.

Proper floor coatings include seamless monolithic resin flooring and grouted flooring. but with uneven grout lines it is hard to saturate and sanitize the floor. If it isn't cleaned properly the food droppings and liquids will create unpleasant odors, marks, dirt and debris which results in problems. To prevent this use of seamless monolithic resonance flooring is a better option.

Walk-in Cooler Panels

When choosing a ceiling for boosted strength and deteriorating obstruction to higher cost Aluminum is a good corrosion resistant and you can buy it at the lowest price while the second option for choosing panels is stainless steel which usually comes in the higher price but is considered as sufficient corrosion resistant.

Embossed forms provide additional strength on reducing sight of wear and tear. extruded polystyrene polyurethane are the most common insulation materials.

Do you really think is it the time for a new cooler?

Here are the entities to consider when supposing that you're in need of a walking cooler or freezer,

  • Beginning a fresh business or inaugurating a new location.
  • Is the efficiency of the present cooler has been reduced.
  • Is there condensation building up on the cooler?
  • Are you in need of more space?

Proper research and attaining a detailed awareness of the walk-in freezer formulates for a long-lasting purchase.

Types of Walk-in Cooler For Home or Outdoor

Prefabricated walk in cooler:

It is formed of premade urethane panels and usually appears in set configuration and sizes which make them short to set up, simple to enlarge and easy to relocate.

They are versatile in nature. you can change the composition as per your condition. They are less expensive with fewer installation fees. but the fact is that they are not long-lasting as built in ones and attainable in particular sizes.

Built in walk-in Freezer:

It uses insulation covered by structural tiles on the walls and grounds. they have the advantage of being built up to your exact demands and can’t remove easily. they are available in bulk and different sizes.

It is designed exactly to fit your necessities, moreover it is not easily adjust or altered to accommodate business growth.

Walk-in Cooler Installation Guide

Indoor and Outdoor:

If you want an indoor or outdoor cooler you’ll have got to explore a few points;

You will be needing a rain roof, weather roof, supplementary ceiling sheet to prohibit panels of the system.

For ultimate cold weather circumstance you will be required winterizing kit. that will comprise a compressor lid and heater to warm the compressor oil for satisfactory circulation.

Outdoor walking restaurant coolers expects more components that’s why they are generally higher in cost than Indoor coolers.

Indoor walk in cooler is an area which is fixed and there is a choice to broaden any time and in any extent you except.

While preferring walk-in cooler you should also infer your area, as cold environment favors outdoor commercial cooler and hot and muggy environment favors indoor freezers.

Indoor cooler can cause noise through condensing unit which may irritate your home's inside, to avoid such annoyingness you should prefer an outdoor commercial cooler.


You have a possibility to call a walk in with or without a floor included. Eventually which one you go for relies on how you plan to use a walk-in freezer unit and the setup of the space.

You're advised to Create an insulated concrete slab with thermal breaks. This will help you to stop the collection of condensate on concrete floor.

It should be positioned at above grade category such as over a basement because an insulation space is required.

Flooring is usually made up of Aluminum and easily adds enduring power to your walk-in refrigerator.

Insulation type:

Walk in refrigerator is heavily insulated from top to floor that assures the temperature of interior to remain constant, keeping the items safe and refrigerate.

There are particular insulator types relying on the R-value. Devalue refers to the stuff extent to withstand heat flow and determine how much power it has.

Foamed in place polyurethane:

It is sprayed between two metallic panels that build the walls and ceilings of the walk-in freezer units. it has an R-value of R8 and is the most productive installation among most familiar materials. The system results as a powerful insulation that make sure the cold inside is perfectly bound.

Extruded polystyrene( XPES):

It has an R-value of R2 to R5. It is designed by simply gluing the external metal membrane into foam blocks which have been known to dis laminate after Time.

It is reasonable but with limited efficiency and will want more power consumption for extended run.

Laminated panels:

laminated panels use polyurethane slabs attached to the inner side of the unit's panel. the drawback of utilizing lamination is it may have a tendency to peel off from metal pedals.

Walk-in Refrigerator and Freezer Maintenance and Cleaning

How to clean and decontaminate the walk in freezer or cooler?

You Can use an approved cleaning solvent of bleach and water to clean the freezer. But to clean your refrigerator you have to follow the manufacturer’s guidance to obtain the best results.

Maintenance of Doors:

The doors should be in maintained in decent condition because they maintain the unit’s stability efficiently by resisting the dirt and debris out of the door. Make sure that you follow the regulations that extend the life of the door.

Maintenance of Condenser Coils:

The condenser coils should be kept clean. when they become clogged it will be an additional distress on the compressor that will cost your refrigeration system.

A normal regular basis cleaning and maintenance is also required because bacteria can grow on the side, canopy and floor(ground) inside a walk-in cooler.

It’s a favorable suggestion to regularly wipe down all the services to stave off the evolution of harmful microorganisms and germs.


AJ Milbes

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