Shoppers used to browsing a countertop microwave aisle are often surprised that Asko built-in microwave types come exclusively in one format: recessed into cabinetry, with no freestanding or over-the-range option anywhere in Asko’s current or historical lineup, in the US or any other market. The lineup instead splits into three functional tiers.
OM – microwave-only
The OM designation covers Asko’s built-in units that provide microwave cooking only, without a convection or steam function layered in. This is the simplest of the asko built-in microwave types, aimed at kitchens that already have a separate wall oven handling convection baking and roasting, and just need microwave reheating and defrosting built into the cabinetry.
OCM – combi microwave plus convection
OCM units combine microwave cooking with a true convection oven function in a single built-in cavity, letting the appliance switch between fast microwave reheating and genuine convection baking or roasting. Models such as the OCM64BSH and OCM8478G belong to this family, and this combi format is the most common built-in microwave type Asko actually lists across its regional product catalogs, including in combi-microwave-oven categories on Asko’s Australian and UK sites.
OCSM – 5-in-1 with steam
OCSM units add a steam-cooking function on top of the microwave and convection capability found in an OCM, giving a single cavity that can microwave, convect-bake, steam, and combine those functions together – the “5-in-1” name reflects the range of cooking modes available from one built-in appliance rather than needing separate steam and microwave units installed side by side.
Why there is no countertop or over-the-range Asko microwave
This is a deliberate design position, not a gap in the lineup – Asko’s entire kitchen design philosophy centers on integrated, cabinetry-matched appliances with a consistent “more steel, less plastic” aesthetic, and a freestanding countertop unit does not fit that design language. If you are trying to source a specific Asko microwave and keep finding only built-in listings, that is accurate, not an incomplete search.
What this means for repair
Because all asko built-in microwave types are recessed into cabinetry rather than sitting loose on a countertop, service access generally means opening the surrounding cabinet face rather than simply pulling the unit off a shelf, and the trim kit or surround panel needs to be removed carefully to avoid damaging the cabinetry finish during a repair visit.
How to identify which of the asko built-in microwave types you own
The clearest way to confirm which of the asko built-in microwave types is installed in your kitchen is the model number prefix on the rating plate – OM for microwave-only, OCM for combi microwave and convection, or OCSM for the 5-in-1 steam variant – rather than guessing from the control panel layout alone, since panel designs can look similar across the three lines even though their internal capabilities differ meaningfully. If the rating plate is not easily visible, the presence or absence of a steam or convection setting on the control panel itself is a reasonable secondary clue, though confirming the actual model prefix remains the more reliable method.
How the three built-in lines are positioned relative to each other in price and feature tier
Within Asko’s regional catalogs, OM units generally sit as the simplest and most affordable of the three formats, OCM sits in the middle as the most commonly listed and versatile option, and OCSM sits at the top as the most feature-rich, steam-capable format. This tiering broadly mirrors how Asko positions its built-in ovens as well, with combi and multi-function capability commanding a premium over single-function units – a pattern worth knowing if you are comparing options for a kitchen build and trying to understand why one unit costs meaningfully more than another that looks similar from the outside.
How trim kits differ across the three lines
Trim kits and surround panels are generally specific to the cavity dimensions of each individual model rather than universal across the OM, OCM, and OCSM lines, meaning a trim kit purchased for one model will not necessarily fit a different unit even within the same line. Always match the trim kit part number to the specific model being installed rather than assuming a general “microwave trim kit” designation will work.
Getting a built-in unit serviced
Whichever of the asko built-in microwave types you own, our experienced, independent technicians are familiar with the cabinetry-access requirements each format involves. See our guide on combi convection cooking explained, browse model reference pages, or book a visit at /schedule/. Asko’s own built-in cooking lineup is documented at global.asko.com.
