The easiest place to install a gas boiler is where an old unit was located or where a gas connection is available. Boilers can be noisy and potentially dangerous, so they are generally best placed away from living areas.
The cost of running a new gas line to a home can be expensive, and installing a new connection to an existing gas line typically requires expert help. Most homes in areas where natural gas heating is available have areas designed for boiler or furnace installation.
While boilers generally have a number of safety features, small accidents can lead to hot water or steam leaks. Parents might want to place boilers behind a locked door to protect their children from injury.