Blog › Why Fridges Stop Cooling
When the dry season hits, refrigeration calls spike across the whole province. Here's exactly why, and what you can do about it.
Every refrigerator is built to move heat from the inside of the cabinet to the air around it. When the surrounding air is already hot — as it routinely is in Tamarindo, Nosara, Flamingo, Playa del Coco and Potrero during the dry season — that heat has nowhere efficient to go. The compressor has to run longer, the condenser coils have to dissipate more heat into already-warm air, and the entire system operates well outside the conditions it was designed and tested for.
We see this pattern every year without fail. From January through April, our call volume from beach communities roughly doubles. It's not that refrigerators are randomly breaking — it's that units already weakened by a year or two of heat exposure finally reach their limit when temperatures peak.
Dust from unpaved roads near Potrero and Flamingo, plus general household dust, settles on condenser coils and acts as insulation. The coils can't release heat properly, so the compressor overworks trying to compensate — and eventually the fridge simply can't keep up.
In a kitchen that regularly hits 35-40°C, like many homes in Liberia and inland Santa Cruz, the compressor may run 80-90% of the time instead of the normal 40-50%. Eventually the motor windings overheat, a thermal protector trips repeatedly, or the compressor fails outright.
A small refrigerant leak that would barely affect cooling in a cool climate becomes a serious problem in Guanacaste's heat, because the system has less margin for error. We test refrigerant pressure on most coastal service calls, from Nicoya to Samara.
Salt air and UV exposure degrade door gaskets faster on the coast — we replace far more seals in Tamarindo and Playa del Coco than we do in inland towns. Every time warm humid air leaks past a worn seal, the compressor has to work harder to compensate.
First, check that the unit isn't pushed flush against a wall — refrigerators need airflow space around the back and sides to dissipate heat, which matters even more in a hot climate. Second, check and clean the condenser coils if you're comfortable doing so; a simple brush or vacuum can resolve mild cases. If the fridge is still warm after that, it's time to call a technician before food spoils and before a minor fault becomes a major one.
We serve all of Guanacaste, including Tamarindo, Nosara, Flamingo, Playa del Coco, Potrero, Liberia, Santa Cruz, Nicoya and Samara. Most calls about cooling failures are diagnosed and resolved the same day.