This depends on the model number.
It is unlikley that you couldconfigure many airconditioners to be used as heaters.
4800 BTUs will 150 square feet.
This size unit is enough to cool a room 450 square feet which gets a lot of sunlight; air conditioners are rated by BTUs not degrees of cooling, you run it until the room is the temperature you have chosen.
A small room is about 5,000 BTUs. Most people don't have a room that would require more than 10,000 BTUs.
90,000 BTUs - the 090 is what tells you the BTUs of the unit.
5,000
One can purchase a Honeywell Hepa filter online at websites such as Amazon, Honeywell, eBay, and many others. There are many places that sell Hepa filters in store such as Home Depot, Lowes, and Menards.
There are approximately 6,700-8,300 BTUs per pound of lignite coal. A ton of lignite coal contains 20-24 million BTUs.
1 kilowatt is equal to 3,412 BTUs (British Thermal Units).
6,520 Btus
"Sweet Miss Honeywell's Revenge" by Kathryn Reiss has 240 pages.
There are many retailers that sell the Honeywell air filter. One can easily find an air filter on the official Honeywell company website, or from a local home improvement store.