How to fix condensation in your glass door display fridge

If your glass door display fridge is fogging up, it’s not just an inconvenience.

If you run a café, takeaway, deli, supermarket or corner shop, condensation affects product visibility, reduces your units’ efficiency and, ultimately, affects your reputation, which can cost you sales.

Now, temporary condensation in your commercial fridges is usually linked to the environment or usage. For example, if it’s a warm day and a customer holds the door open for some time, you’ll see condensation. No problem.

But if the issue is persistent, especially in older units, it probably means your fridge is no longer performing as it should. That means the most cost-effective solution is upgrading to a new model. And one of the best brand options out there is TEFCOLD.

This guide explains what’s causing the problem, whether some maintenance can realistically fix it, and when upgrading to a newer TEFCOLD fridge is the better option.

Is condensation in a display fridge normal?

Some condensation is to be expected in high-traffic or humid environments. However, in a properly functioning TEFCOLD commercial display fridge, it should be minimal and, crucially, temporary.

So, if the condensation is constant, worsening, or happening alongside decreased efficiency and performance, it’s a sign that your unit is either operating outside its ideal conditions, or it’s no longer capable of handling them effectively.

Why your glass door display fridge has condensation

Condensation forms when warm, humid air meets the cold glass surface of your fridge. It may be more noticeable if your store is a busy environment with lots of traffic, frequent door opening and higher ambient temperatures.

If you have a newer TEFCOLD display fridge, here are a few checks. A new unit shouldn’t be reaching the end of its lifespan, so the (relatively minor) problem should lie somewhere here:

1. Start with the door seal. If it’s not sealing properly, warm air will continually enter the cabinet. Close a piece of paper in the door. If it stays in place, the door is sealing properly. Use a duster or vacuum followed by soapy water to clean the gasket.
2. Next, look at how you use the fridge. Even with a modern TEFCOLD unit, your use patterns might push the cooling system beyond its ideal conditions. You may need to move it to a less busy part of your shop.
3. Overstocking or blocking the vents can disrupt the airflow. This may lead to uneven cooling and condensation forming on the glass. Reorganise your stock if you find you’ve overfilled it.
4. Finally, consider the unit’s surroundings. If you place it near heat sources, windows or in a poorly ventilated area, the ambient conditions alone may be enough to cause ongoing condensation. Move it if you need to.

You may be able to improve the performance and reduce condensation with some of these checks. However, they won’t resolve issues caused by ageing components or outdated design.

When condensation points to an ageing or underperforming unit

If you still see condensation, even after making some adjustments, your unit may be deteriorating. As your fridge ages, components such as fans, seals and the compressor/cooling system gradually lose their efficiency. As the performance drops, your refrigerator struggles to manage the humidity or maintain stable temperatures.

At this point, you may start to see persistent condensation. In most cases, the issue isn’t a fault on your part. It’s just part of normal wear and tear. By now, repairing your unit may not be the most cost-effective option, especially once you factor in ongoing running and maintenance costs.

How modern TEFCOLD units reduce condensation

Newer TEFCOLD display fridges and bottle coolers are better designed to handle the challenges of busy commercial environments. Compared with older units, you get improved airflow and anti-condensation features. These help keep the glass clear in warm or humid conditions, even with frequent door opening.

They also come with more efficient compressors and better insulation to allow the unit to recover temperature more quickly. This makes a noticeable difference in cafés, bars, supermarkets, corner shops and other environments where the doors are constantly opening and closing.

Upgrade to a more reliable TEFCOLD display fridge with Fridgesmart

If your current unit is struggling with persistent condensation, upgrade to a modern TEFCOLD glass door display fridge. That’s often the most effective solution. Follow the link to see some of our prime examples.

Here at Fridgesmart, we provide a wide range of TEFCOLD display refrigeration designed for commercial environments, with competitive pricing, fast UK delivery, and expert support to help you choose the right unit. Get in touch with our team today to find the right TEFCOLD unit for your business.