A central heating system provides warmth to the whole interior of a building from one point to multiple room. #centralheatingsystem. https://t.co/fjVBezqvnF https://t.co/wr6akCFF4s

A central heating system provides warmth to the whole interior of a building from one point to multiple room. #centralheatingsystem. https://t.co/fjVBezqvnF http://pic.twitter.com/wr6akCFF4s

— Desert Air (@DesertAirPalmCA) January 9, 2018

from Twitter https://twitter.com/DesertAirPalmCA