Microwaves

Countertop, over-the-range and built-in microwaves:

the countertop kind plugs into any outlet and moves house on the back seat. The over-the-range model bolts to the wall above the stove with a fan and light underneath, so it does a hood’s job as well. It moves less air than a dedicated hood, which matters if you fry a lot; weigh the two against each other in extractor hoods. A built-in microwave lives in a tall cabinet, often stacked over a wall oven from ovens.

Size, inverter control and convection in a microwave:

boxes are labelled in cubic feet, and the compact sizes are where people go wrong. A small cavity takes a mug and a side plate, but a full dinner plate or a rectangular dish can jam against the walls instead of turning, so measure your largest plate before buying small. An inverter microwave, long Panasonic’s selling point, holds a steady low power instead of switching full power on and off, and you see the difference when meat defrosts without the edges cooking. A grill element browns and crisps. A convection model adds a fan and a heating element, so it bakes and roasts and can stand in for an oven in a small apartment. For toast or crisp fries, a toaster oven or air fryer from small kitchen appliances does that better for less.

The installed microwave is where the money sits:

a basic compact countertop microwave starts around ₡45,000 new, and a family-size inverter one rarely passes ₡150,000, so a second-hand countertop unit has to be recent, clean and priced to beat a new one still in its box. Over-the-range and built-in models run from about ₡250,000 to ₡700,000 new and hold their value far better used, because a kitchen built around one needs a replacement that matches the same cut-out and wall plate.

Power surges and a microwave’s control board:

a microwave that stops working here often has nothing wrong with the part that makes the heat. Surges burn out the board instead: the keypad stops answering, the display flickers or the oven will not start at all. A protector for one should be made for appliances and rated above the draw on the microwave’s label, not a small regulator meant for a computer. When you look at a used one, ask whether it ran on a protector and whether the board has ever been replaced; a new board on an otherwise sound oven is not a reason to walk away.

The cup of water that tells you if a used microwave heats:

put a cup of tap water in, run it on full power for a short spell and touch it: it should come out hot. If the light, fan and turntable all work but the water stays cool, the fault is in the door switches or the high-voltage parts. Switches are cheap; the high-voltage side rarely pays on an inexpensive oven. Open the door mid-run as well: it must stop instantly, and the latch should click shut firmly. Then look at the small mica sheet on the inside wall. Charred, greasy or cracked, it makes the oven spark. The sheet itself is cheap to replace, but rust or bubbling paint inside the cavity, worst around that sheet, is the fault to walk away from, along with a cracked door window. On an over-the-range unit, run the fan and the light underneath and check the grease filter.

Listing a microwave for a buyer in Cartago or Grecia:

photograph it clean with the door open, the cavity and mica sheet close up, and the rating label showing model and capacity. Say whether the glass tray and roller ring come with it. For an over-the-range unit, the wall plate and mounting template matter most, because a missing plate is what stalls the sale. Many come down during kitchen remodels, when the owner swaps to a proper hood, so say so: a buyer reads remodel as a working unit taken off the wall, not a broken one.