The heat pump is thus just the reverse of an air conditioner, and indeed some heat pumps have a switch which allows them to function as an air conditioner in the summer.
(The heat pump; is thus; just the reverse of an air conditioner) (a switch; allows; them to function as an air conditioner in the summer) Context(a switch allows,List([94, 115))):(them; to function; as an air conditioner in the summer)
a switch allows,List([94, 115))
The heat pump a switch them
is thus allows to function
just the reverse of an air conditioner
them to function as an air conditioner in the summer
as an air conditioner in the summer