The “MKTH-17 Series” is a line of inverter-driven mini split systems from Everwell.
MiniSplitWarehouse
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device.report
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everwell-ac.com
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The “3625” implies a ~36,000 BTU (3 ton) class system. For example, one listing for MKTH3625C-17 / MKTH3625E-17 describes a 36,000 BTU R-32 heat pump package with wall-mount indoor unit included.
MiniSplitWarehouse
The “E-17” suffix signals a variant (likely indoor version or model letter) within the 17 SEER2 (or 17-series) family.
everwell-ac.com
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everwell-ac.com
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device.report
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The indoor unit is likely a high-wall (wall-mounted) evaporator (air handler) that handles the air side: drawing room air over its evaporator coil, dehumidification, and delivering conditioned air into the space.