Carbon Monoxide Alarm Query

PGL

Hi folks

How many carbon monoxide alarms are required in a bog standard 4 bed semi detached house? There is a gas boiler located in a small utility room just off the kitchen towards the rear of the house and there is also a gas fire place in the front sitting room. Would one alarm located mid way (approx. 5 metres from the entrance to both rooms) between the two rooms in the hall be sufficient? Upstairs there is just a bog standard hotpress.

Thanks!

Tom44

3
One for each appliance (room) and one on the landing outside bedroom's.

Hotpress doesn't burn fuel.

PGL

Hi Tom. Thanks for the feedback. I'd already bought 1. I'll now pick up 2 more, and install one in front sitting room, one in utility and one on the first floor landing.

DGOBS

Very important to read the instructions completely about where to install the alarm.

This is based on the type of appliance in the room, and where no appliance is in a room/space, what type of room it is.
All too many times I have seen CO alarms left onto of a mantle, or tucked away on a shelf.

Remember, in a room with a non-conventing appliance (especially open flued or flueless) if you had a buildup of CO, it would fill the room similar to turning the room upside-down and filling it with water.

Now imagine your CO alarm was for instance below the header height of the hall door, where would the water go?
It would spill over the header and into the ceiling space of the hall, and migrate up the stairs and follow natural air currents, the CO alarm in the room wouldn't activate until all that area fills with CO and eventually in 'fills the room' downwards to the alarm, by which time you may never be waking up for your bed upstairs again!

Read the manual and follow the installation instructions to the tee!