Physical space is often a critical factor for homeowners and business owners alike when selecting a new boiler to install in an existing utility room. Fortunately, there are plenty of options. Boiler appliances can be wall-mounted or floor-standing. The size of the unit will depends on the size of the property that needs to be heated. Around 1 to 1.5 square meters is typically required for a floor-standing residential boiler. If you’re looking to save more space, you could also consider a combination boiler that supplies hot water to your heating system and plumbing.