On Tue, 19 Nov 2019 12:12:45 +0000
Martin Brown wrote:

Bottled gas tends to be expensive and hard work in terms of cylinder
swaps during winter.

Our gas switches automatically from one cylinder to the other, and the
guy who delivers the new cylinder does all the work. All I have to do
is monitor the indicator to know when it has changed over, and make a
'phone call.

--
Davey.