Airconditioning Units
Buy and sell airconditioning units in Costa Rica.
On the coast, from Liberia down to Puerto Viejo, a wall-mounted mini split is the usual way to cool a bedroom. New and pre-owned, the choice runs from conventional and inverter splits to portable units that vent through a window hose, up to cassettes and the ceiling-mounted units that shops and offices run. A split is only half the purchase: it still has to be mounted, piped and vacuumed by a technician, and that cost follows a used unit to its next wall. Ask the seller for the BTU rating, voltage and refrigerant before anything else.
Mini splits, portables and the climatizador mix-up:
the word gets stuck on two very different machines. A real air conditioner has a compressor and refrigerant: a mini split puts the cooling head on the wall and the condenser outside, while a portable carries both in one box and pushes its heat out through a hose. An evaporative cooler, often sold as a climatizador or enfriador, only blows air over wet pads, which adds moisture, the last thing a bedroom in Limón needs. For moving air or drier air rather than cold air, fans and dehumidifiers cost far less. Ceiling cassettes and piso cielo units are the commercial end, sized for a restaurant or an office floor.
Choosing a mini split by BTU, compressor and distance from the sea:
size it to the room first. One ton, 12,000 BTU, is the bedroom size; a living room, or a room under a metal roof that takes the afternoon sun, wants 18,000 or 24,000. Undersized, it runs flat out and never dries the air; oversized, it switches off before the damp is out and the room feels clammy. One-ton units come in 110 V and 220 V, but anything larger needs a 220 V circuit. Then inverter or conventional. A conventional compressor runs at full power and stops; an inverter slows down and keeps going, and over a night it draws noticeably less. Household electricity here is billed in rising blocks, and an air conditioner’s consumption lands almost entirely in the dearest one, past 200 kWh a month. On a unit that runs every night, the inverter earns back its higher price. Near the sea, look for coated condenser fins, sold as gold fin or anti-corrosion. Salt air from Puntarenas to Tamarindo eats bare aluminium within a few seasons, while the same unit in Grecia or Cartago has an easy life.
What a one-ton split costs once the installer is counted:
a new conventional 12,000 BTU mini split is around ₡150,000 to ₡190,000. A standard wall installation starts around ₡95,000 for labour and basic materials, before extra pipe, which on a cheap unit is half the machine’s price again. So a used conventional split only makes sense when it is cheap enough to absorb the installer’s bill. A used inverter or a bigger unit has more value left to keep, and a used portable needs no technician at all, which is why it holds its price better.
Checking a used air conditioner while it runs:
ask to see it cooling. After ten minutes the air from the indoor head should be roughly 8 to 12 °C colder than the room. Fins that turn to white powder under your finger are salt damage, and oily marks at the pipe joints point to a refrigerant leak. A blinking code on the indoor panel usually means the inverter board has logged a fault, and that board is the expensive part. Ask how it came off the wall: if the gas was pumped down into the condenser and the valves capped, it can go straight back up; if the lines were cut, it needs a full recharge with the same gas, R410A or R32, shown on the nameplate. Either way, reinstalling means pulling the lines to a vacuum with a pump and gauges.
Passing on a mini split unit when you move or upgrade:
most of these come up when someone leaves a rental in Guanacaste, refits a shop or swaps an old conventional unit for an inverter. List what the buyer’s technician will ask: BTU, voltage, inverter or conventional, refrigerant, brand, model and year, with photos of both nameplates, the condenser fins and the remote. Say whether it is still mounted or already down and pumped down, and which town it worked in, because a unit from Quepos gets judged on corrosion and one from San Ramón does not. If it is still on the wall, say who takes it down. A buyer collecting a dismounted unit needs a pickup and a second pair of hands for the condenser, and should ask for the pipe ends to be capped so no dirt gets in.