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2. Crankcase heater - Wikipedia

   en.wikipedia.org/wiki/Crankcase_heater

   Some air conditioning equipment manufacturers install crankcase heaters either in the compressor (insertion type), or mount them externally around the base of the compressor (bellyband type). The two wires of the heater are wired directly to the input side of the contact from the main power supply, and power is always supplied to the heater.

3. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   Air conditioning, often abbreviated as A/C (US) or air con (UK), [1] is the process of removing heat from an enclosed space to achieve a more comfortable interior ...

5. Damper (flow) - Wikipedia

   en.wikipedia.org/wiki/Damper_(flow)

   A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control - for example, in the case of ...

6. Aluminum building wiring - Wikipedia

   en.wikipedia.org/wiki/Aluminum_building_wiring

   Also, larger aluminum stranded building wire made with AA-8000 series alloy of aluminum is used for electrical services (e.g. service entrance conductors from the utility connection to the service breaker panel) and for larger branch circuits such as for sub-panels, ranges, clothes dryers and air-conditioning units.

7. Home inspection checklist for buyers: What to know - AOL

   www.aol.com/finance/home-inspection-checklist...

   HVAC (heating, ventilation and air conditioning), including thermostats, vents, distribution systems, access panels, insulation and vapor retarders. Entrance Stairways Furnace Backyard.