Ensure you know where
the stop cock for your mains water is. You may need to shut it
off in a hurry 
Cover any tanks in
your attic, aero or ply board will do it, however plastic tank
covers are available and cheap 
Be sure and get your
boiler serviced once a year 
Set the thermostat
at a comfortable 20ºC. A 1ºC decrease in your room temperature
will reduce your heating bills by 10% and you will hardly notice
any difference 
Check your fireplace
for signs of staining, this is a tale tail for carbon monoxide
entering your room.
Ensure all vents are unobstructed and always open 
If you smell gas,
shut off gas meter valve 
Don’t turn
anything electric on or off 
Ventilate affected
area 
If in doubt or in
case of an emergency call the 24 hour Bord Gais Emergency service
line on 1850 20 50 50 
Remember, advice
is free