This can be the leading cause for foul HVAC odors for many homeowners, which raises concerns about indoor air quality. Another indicator of an indoor air quality problem is the smell of dirty socks. Although this smell may be coming from the air conditioning unit, it is not actually the unit that is the problem.
Device. 1  Ratchet (device), a mechanical device that allows movement in only one direction. 2  Ratchet, a tool also known as a socket wrench. 3  Ratchet (instrument), a type of music instrument.
racket1 top: tennis and racquetball rackets bottom: squash racket rackÂ·et 1 also racÂ·quet (rÄkâ²Ä­t) n. 1. A device consisting of an oval or circular frame with a tight interlaced network of strings and a handle, used to strike a ball or shuttlecock in various games. 2. A wooden paddle, as one used in table tennis.