Evaporator Icing in London & the M25

The evaporator absorbs heat from inside the cabinet or cold room. It depends on correct refrigerant feed, working fans and an effective defrost to stay clear of ice.

Iced or blocked evaporators cut airflow, cause uneven temperatures and often lead to water leaks when ice eventually melts.

When the problem is "evaporator icing", the cause can sit in several places. The engineer will check the simplest and most likely causes first, then move on to components and the refrigerant circuit.

In the meantime, check that the power supply is on, the set point has not been changed, vents and coils are not blocked and doors are closing properly. If stock is at risk, move it to working storage and record temperatures for your food safety records.

Every visit is scoped to the equipment and the problem in front of us. For evaporator icing, the work typically includes the following, with any extra work explained and agreed before it goes ahead.

If you notice any of the following on your refrigeration evaporator, it is worth arranging a visit before a minor issue becomes a breakdown.

A proper visit goes beyond fixing the obvious symptom. Depending on the equipment and the agreed scope, the engineer will check:

We work with display cases, blast chillers, cellar coolers, freezer rooms and many other commercial premises across London and the M25. We understand that equipment often has to be worked on while you are trading, so we plan visits to minimise disruption and keep areas clean and safe.

Multi-site operators and facilities managers can group equipment into one maintenance schedule, with consistent records across sites.

Work on refrigerant circuits must be carried out by engineers holding the appropriate F-Gas certification, and systems containing fluorinated gases above the relevant threshold need periodic leak checks with records kept by the operator. For food businesses, reliable chilled and frozen storage also supports your food safety management system: chilled food in England must generally be kept at 8°C or below, with many operators targeting 5°C or below, and frozen food is normally held at −18°C or colder.

After the visit you receive a record of the work carried out, readings taken where relevant and any recommendations, which you can keep with your maintenance and compliance documents.

Booking is straightforward and we keep you informed at each stage.

We focus on commercial premises, so our engineers are used to working around trading hours, food safety requirements, tenants and facilities teams. You get a named point of contact, clear explanations in plain English and a written record of what was found and fixed.

We also provide commercial gas safety certificates, catering equipment servicing and air conditioning work, so sites with several types of plant can deal with one contractor for planned visits and compliance paperwork across London and the M25.

Not every fault justifies a repair. Where evaporators are old, use a refrigerant that is being phased down, or keep failing, the engineer will tell you honestly whether a repair is good value or whether planning a replacement makes more sense. Age, energy use, parts availability and the cost of downtime all feed into that decision.

For equipment worth keeping, a planned maintenance schedule matched to how hard it works is usually the most cost-effective way to avoid emergency call-outs and keep running costs down.

Do not stack stock against evaporator fans; blocked airflow is a frequent cause of icing and warm spots.

Keeping a simple log of temperatures, alarms and faults also makes diagnosis faster and helps spot patterns before equipment fails.