For easier installation and minimal disruption, it is usually best for a new boiler to be sited in the same position as the old one; which often tends to be in or near kitchens and utility rooms. That is not to say boilers cannot be moved to another room if the pipework is correct can be re-connected easily, the flue is in the right position and there is access for maintenance and servicing. However, practical considerations and stringent building regulations will apply, as this guidance explains.

Garage or shed – as these areas can get very cold additional frost protection is critical to combat the risk of pipework freezing.
Loft – a permissible location if the boiler is easily accessible for maintenance and servicing. The downside is that hot water may take longer to reach taps and the flue installation may be more costly due to roof access, etc.
Bedroom – all boilers make some noise and this may bother light sleepers.
Bathroom – a popular location as drainage and waste pipes already exist. However, wiring and gas safety regulations may limit the number of ‘safe zones’ the boiler can go in.

Always consult a qualified Gas Safe registered engineer who will provide expert advice on the best solution for your boiler position and the associated pipework, flue and drainage.