We’ve nearly all experienced it. You set up camp, everything is rosy, and the next morning, you wake to find that your RV fridge can best be described as ‘lukewarm’ when you were aiming for ‘icy cold’.

An underperforming RV fridge is certainly not uncommon; but sometimes, you just need to tweak things a little to get it back in tip-top shape. Here are some tips and tricks to help you keep your RV fridge running as efficiently as possible.

Understanding RV Fridges: The Basics

Before we dive into the tips, it helps to know how RV fridges work. There are two main types: compressor fridges and three-way fridges.

Three-way fridges are versatile and capable of running on 240V mains, 12V or gas – and they are a staple of the RV lifestyle. They are highly efficient when running on gas but are sensitive to the environment. This means that ambient temperature, airflow, and how level your van is, all impact their performance.

Compressor fridges are a little like your home fridge, except they run on 12V power. For those who can keep up with their power needs, they are a great fridge because they are reliable and easy to maintain.

Ensure Your RV Fridge is Level

As many of you will already have discovered the hard way, three-way fridges need to be level to work properly. Even the slightest tilt upsets them, particularly in hot weather. Make sure to use a spirit level in the freezer compartment when you set up camp. It can help to find a permanent reference point – such as the benchtop or drawbar – that matches the freezer’s level for quick levelling in the future.

Improve Airflow Around Your RV Fridge

All fridges work by removing heat from the food compartment and releasing it outside. Poor ventilation can hinder this process, especially in three-way fridges that rely on the chimney effect.

• Consider installing a baffle: you see, air flows similar to water in that it will take the path of least resistance. If the gap behind your fridge is too big, air will flow past the vanes without removing the heat at the greatest efficiency. Installing a baffle behind the fridge helps ensure that air is directed across the cooling fins rather than escaping through gaps.

• Consider a fan: adding a fan to boost airflow can help.

Keep Your RV Fridge in the Shade

Position your RV to minimise sunlight on the fridge side. Direct sunlight can heat the fridge’s exterior, forcing it to work harder to stay cool. If shade isn’t an option, consider installing a shade sail. Just make sure it doesn’t block the airflow!

Check Your RV Fridge’s Wiring

Fridges running on 12V require properly sized wiring to handle the current draw. Compressor fridges can draw up to 7 amps, while three-way fridges may draw as much as 14 amps when running on 12V. If your caravan and fridge are a little on the older side, have the fridge checked by a professional to ensure your fridge wiring is of sufficient diameter to prevent voltage drop.

Pack Your RV Fridge Smartly

How you pack your fridge plays a huge role in its performance.

• Leave space for airflow: ensure there’s enough room between items for air to circulate, helping to chill everything evenly.

• Pre-chill items: packing pre-cooled food and drinks reduces the strain on your fridge, allowing it to maintain a stable temperature more efficiently.

• Turn it on early: a compressor fridge cools quickly, but a three-way fridge can take 4-8 hours. Turn it on the night before your trip to ensure it’s ready to go.

Defrost Your RV Fridge Regularly

Frost build-up can reduce your fridge’s efficiency, especially in humid conditions. When it appears, transfer your food to an insulated bag, turn off the fridge and place a bowl of hot water inside. This will melt the ice and allow your fridge to work more effectively.

Understanding RV Fridge Temperature Fluctuations

Digital thermometers can be useful, but they can also cause unnecessary concern. It’s natural for an RV fridge to fluctuate in temperature. An average of 4°C for the fridge and minus 16°C in the freezer is ideal, and a few degrees on  either side of this at different times of the day is fine. 

Limit How Often You Open the Fridge Door

Reducing how often you open the fridge door keeps the cold air inside. If you’re travelling with kids who are constantly opening it, consider getting a small compressor fridge for drinks and snacks.

Check the Door Seals on Your RV Fridge

As you probably already know, a loose door seal invites the warm air in. If you haven’t looked at your seals for a while and your fridge is on the older side, now is as good a time as any to check it out. Grab a piece of paper. If you can slide it through when the door is closed, your seals well and truly need attention.

Final Thoughts on RV Fridge Maintenance

From improving ventilation to levelling your van, these practical tips will ensure your fridge stays cool, your food stays fresh, and your drinks are always chilled. Cheers to that!

Category: Features
Written: Sat 01 Feb 2025
Printed: February, 2025
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