![](http://www.alamy.com/thumbs/6/13200A5C-9D03-4546-A06A-1D94A34974F8/B6HA9K.jpg)
Gas central heating flue against brickwork
Size: 3400px × 5100px
Photo credit: © Jonathan Ball / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: bills, brick, bricks, duct, energy, exhaust, flue, gas, global, heat, hot, metal, metallic, pollution, powerflue, vent, warm, warming, warmth