Close to the sea, salt air and fine sand settle on your fridge's condenser coils and make it work much harder to stay cold. Cleaning them takes about 20 minutes, costs nothing and can prevent a summer breakdown. Here is exactly how to do it.

Quick answer

Switch off and unplug the fridge, pull it out carefully, find the condenser (a black grid at the back or a coil underneath behind a kick panel), and vacuum it gently with a brush attachment, working with the fins. Clean the condenser fan if there is one, wipe the floor, push the fridge back leaving a gap, and switch on. Do it twice a year in Jeffreys Bay.

Why the condenser matters

A fridge does not make cold. It moves heat. Heat from inside the fridge is pumped through the system and released into your kitchen through the condenser. If the condenser is coated in dust, fluff, sand and salt, it cannot release heat properly. The fridge then:

  • Runs for longer to keep cold
  • Uses more electricity
  • Runs the compressor hotter
  • Struggles on hot summer days, when the kitchen is warm and the fridge is opened often

In Jeffreys Bay, where homes near the beach are exposed to salt air and wind-blown sand, condensers get dirty faster than inland. A dirty condenser is one of the most common contributing factors in the summer fridge failures we see.

Where to find the condenser

Fridges have one of three layouts:

Black grid on the back

Older and simpler fridges have a black metal grid of tubes and wires on the back. It is easy to see once you pull the fridge out.

Coil underneath, behind a kick panel

Many modern fridges have the condenser underneath, behind a removable grille at the bottom front. There is often a small fan next to it. Some also have access from the back through a cover panel.

Built into the sides

Some fridges have condenser tubes built into the side walls of the cabinet. You will notice the sides get warm. These cannot be cleaned directly, but keeping space around the fridge for air to flow helps.

What you need

  • A vacuum cleaner with a brush attachment and a narrow crevice tool
  • A long, soft condenser brush (available at hardware stores), or a soft paintbrush
  • A torch
  • A damp cloth
  • Someone to help move a large fridge

Step by step

1. Switch off and unplug

Always switch the fridge off at the wall and unplug it. The condenser fan can start without warning, and there are electrical parts nearby.

2. Move the fridge out

Pull the fridge straight out, carefully. Most fridges have rollers at the back and adjustable feet at the front. Raise the feet if needed. Protect your floor with a piece of cardboard or a mat. Do not tilt the fridge more than necessary.

3. Remove the kick panel or back cover if there is one

The bottom grille usually clips or screws on. Back covers are usually held with a few screws.

4. Vacuum the coil gently

Use the brush attachment and work along the direction of the fins or tubes, not across them. Be gentle: fins bend easily. Use the crevice tool and condenser brush to reach between tubes and underneath. Salt deposits may feel crusty. A soft brush loosens them.

5. Clean the condenser fan

If there is a fan, vacuum the blades and the area around them. Make sure nothing is stopping it from spinning freely. Do not bend the blades.

6. Clean the floor and surrounding area

Vacuum and wipe the floor underneath and behind the fridge. Sand and dust here get pulled straight back into the condenser.

7. Check the drain pan

Many fridges have a shallow pan underneath where defrost water evaporates. Check it is not overflowing, cracked or full of debris. Wipe it out if needed.

8. Refit and replace

Refit any covers, push the fridge back leaving a gap of a few centimetres at the back and sides, level it and plug it back in.

9. Check it is running

Listen for the compressor and fan starting. Give it a few hours to return to temperature before restocking with large amounts of food.

How often

  • Near the beach in J-Bay: twice a year, ideally before summer and in autumn
  • Further from the sea: at least once a year
  • Garage, outdoor and braai-area fridges: every few months

When cleaning is not enough

Call a technician if, after cleaning:

  • The fridge still runs constantly
  • It does not get cold
  • The condenser fan does not spin
  • The coil is badly corroded, with crumbling fins or green or white crust
  • You notice oily patches near pipe joints, which can indicate a gas leak

Frequently asked questions

Can I use water to clean the condenser?

Avoid water on the condenser and fan, as there are electrical components nearby. Vacuum and brush instead.

Will cleaning the coils lower my electricity bill?

A clean condenser helps the fridge run efficiently, so it typically runs for shorter periods. The difference is most noticeable on very dirty coils.

My fridge has no visible coils. What should I do?

The condenser may be built into the sides. Keep a gap around the fridge for airflow, and check underneath for a hidden coil and fan behind the bottom grille.

Apex HVAC is an independent company and is not affiliated with or authorised by any appliance manufacturer. This guide is general advice. For anything involving electricity or refrigerant gas, use a qualified technician.

Need a hand? See our fridge and freezer repair service in Jeffreys Bay.