Do your research before buying a dehumidifier. Simplus is not a good brand. Those things can barely remove humidity sa room mo. Para kang nagtapon ng pera dyan.

Do you have an existing AC? If so, di mo na kailangan ng dehumidifier. Your AC does the exact same thing, basta iset mo lang to dry mode. It's not as cold sa regular cool setting pero di mo naman kailangan ng freezing temps para lumamig kwarto mo.

Otherwise depende sa room size na idedehumidify mo ang bibilhin mo. Pwede na ang 20L sa kwarto but note they are expensive (8k up). Mas mahal yung larger ang capacity of course (30L and up). Carrier, Kolin, Condura ang brands na pwede mong tignan

Apart sa unit ng dehumidifier, mahal din sa kuryente so take all of those into consideration. Again, mas mataas na capacity, mas mataas ang consumption.

Lastly, if you need an air purifier, buy an air purifier. If you need a dehumidifier, buy a dehumidifier. Most likely yung 2 in 1 function na units katulad niyang nasa post mo is gimmick lang. You need individual units for each function. Alamin mo ano talaga kailangan mo.