In a word, no. The Heat Output of a Stove, measured in kilowatts (kw), is not a measurement of the output of warmth into your room. It’s a measurement of the maximum temperature the stove can handle.
The output of warmth into your room has more to do with the the physical size of your stove and the type of fuel you use, than its kilowatt rating.
Also the warmth of your room is heavily dependent on how well insulated your room is. And how many open areas are connected to the room.
As part of Phoenix Plumbing & Heating’s Site Survey, we will advise you on the size and type of stove that will best meet your needs, where it will be best positioned in your room, and how we can improve the insulation in your room.