A walk-in is usually the single largest concentration of inventory value in a food business, and when it drifts out of range the loss is running before anyone notices. Most of what we attend was preventable — a gasket, a dirty coil, a drain line — which is a frustrating thing to discover at two in the morning with product at risk.
Napps Refrigeration — Longview & East Texas since 1957
The faults that actually happen, roughly in the order of how often we find them.
The unit is running but not holding range. Usually refrigerant charge, a dirty condenser or airflow — and it is the fault most likely to go unnoticed until it matters.
Frost on the coil, ice on the floor or on product. Almost always a defrost fault or warm humid air getting in through a failing seal.
The cheapest repair on this page and the most expensive one to postpone. A failing gasket lets warm humid air in continuously, every hour the box is closed.
The expensive end. Most compressor failures we see were caused by something upstream — a dirty condenser, a leak, or months of running against a bad door seal.
Water on the floor of a walk-in is a slip hazard and a hygiene issue. Usually a blocked or frozen condensate drain rather than anything dramatic.
Coil cleaning, gasket inspection, refrigerant verification and drain clearing on a schedule. Most emergency calls we attend would have been caught here.
Four things worth doing while a technician is on the way. They can be worth more than the repair.
It sounds trivially obvious and it is the single most valuable thing you can do. Every time the door opens, warm humid East Texas air replaces cold air, and a box that is already struggling loses ground it cannot recover. Decide what you need, get it in one trip, and then leave it closed. A freezer that is kept shut holds usable temperature for a surprisingly long time.
Refrigeration Services →Take thirty seconds to look at the condenser coil, usually on the outside of the unit or on the roof. If it is packed with dust, grease or pollen — and in East Texas it very often is — that alone can be the whole problem. It also tells us something useful before we arrive. Do not attempt to clean it while the unit is running.
Commercial HVAC →If you have another unit with capacity, move the highest-value and most temperature-sensitive stock into it now rather than waiting to see whether the repair is quick. This is the decision that most often determines whether a failure costs you a service call or a service call plus several thousand dollars of inventory.
Commercial Services →Write down what the box is reading and when you noticed. That record matters for food safety decisions afterwards, and it matters if there is ever an insurance or compliance conversation. We log what we find as well, but your timeline starts before we arrive.
Commercial Services →Diagnosed on site — this is the usual pattern.
| Symptom | Most Likely | Also Check |
|---|---|---|
| Running constantly, not holding temperature | Dirty condenser or low charge | Door seals |
| Frost on the coil | Defrost fault | Warm air infiltration |
| Ice on the floor or near the door | Failing gasket or door alignment | Defrost drain |
| Water pooling inside | Blocked condensate drain | Frozen drain line |
| Freezer fine, cooler warm | Separate system fault | Airflow or damper |
| Unit not running at all | Electrical or control | Safety switch tripped |
Or call 903-758-6482 — 24/7
Stabilise temperature first. Diagnose thoroughly second.
What is in there and what it is reading. That shapes the advice we give you before we arrive.
Walk-in failures are not queued behind comfort calls. Your loss is accumulating.
Get temperature heading back into range as the priority, then establish the actual cause rather than the visible symptom.
Flat-rate repair, temperatures recorded, and an honest view on whether the equipment is nearing the end.
Every one of these is cheap now and expensive in a month.
Dispatched fast, diagnosed properly, and honest about what caused it.
Or call 903-758-6482 — available 24/7
These come straight from our Google Business Profile — unedited, and updated automatically as new reviews come in.
What East Texas businesses ask about walk-in problems.
Three things, in order. Look at the condenser coil — if it is packed with dust or grease, that alone can be the whole problem. Check the door gasket by looking for daylight around the seal when it is closed. And make sure product has not been stacked against the evaporator or in front of the fans, which is more common than you would think. Then call us, and keep the door shut in the meantime.
Immediately, at any hour. We treat these as genuine emergencies rather than putting them in a queue, because unlike a comfort cooling call the cost is running from the moment it failed. When you call we will also give you practical advice for the interim — keeping the door shut, and moving the highest-value product if you have somewhere to put it.
Almost always one of two things. Either the defrost system is not working properly, so frost accumulates on the coil instead of being cleared each cycle; or warm humid air is getting in through a failing door gasket or a door that is not closing fully, and that moisture freezes on the first cold surface it meets. In East Texas humidity the second one causes a lot of what we see.
At least twice a year, and quarterly for high-use equipment in a busy kitchen. The two items that matter most are condenser coil cleaning and gasket inspection, because those are behind the majority of failures. The arithmetic strongly favours it here — a scheduled visit costs a fraction of one emergency call with product loss attached.
It depends entirely on how long it was out of range and how far. That is why we ask you to note the temperature and the time when you first noticed, and why moving high-value product early matters so much. We are not food safety inspectors and will not make that call for you, but we will give you accurate temperature information to make it with.
Usually the box itself outlasts several refrigeration systems — panels and insulation last a long time. The question is normally about the condensing unit and evaporator rather than the walk-in. Replacing the refrigeration on a sound box is common and considerably cheaper than a full replacement. We will tell you which part of it is actually at the end of its life.
Refrigeration, ice machines and commercial HVAC each have their own page.
Dispatched immediately, any hour — and keep the door shut until we get there.
Tell us what it is reading, what is stored in it, and when you noticed. If product is at risk now, please call rather than using the form.
