Mr Heater Filter

heater
A person or thing that heats, in particular a device for warming the air or water
A conductor used for indirect heating of the cathode of a thermionic tube
A fastball
device that heats water or supplies warmth to a room
A heater is object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are usually appliances whose purpose is to generate heating (i.e. warmth). Heaters exists for all states of matter, including solids, liquids and gases.
fastball: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"

filter
A screen, plate, or layer of a substance that absorbs light or other radiation or selectively absorbs some of its components
device that removes something from whatever passes through it
remove by passing through a filter; "filter out the impurities"
A porous device for removing impurities or solid particles from a liquid or gas passed through it
A device for suppressing electrical or sound waves of frequencies not required
an electrical device that alters the frequency spectrum of signals passing through it

mr
A title used before a surname or full name to address or refer to a man without a higher or honorific or professional title
Used before the name of an office to address a man who holds it
Mister: a form of address for a man
.mr is the Internet country code top-level domain (ccTLD) for Mauritania. A local contact is required to register a domain name under .mr. Registrations are taken directly at the second level, but a .gov.mr second level domain exists in which governmental sites can be found at the third level.
Mister is a commonly- used English honorific for men under the rank of knighthood. The title derived from Master, as the equivalent female titles, Mrs, Miss, and Ms, all derived from the archaic Mistress. The title Master was retained and used for boys and young men, but is now rarely used.
Used before an invented surname to imply that someone has a particular characteristic