Steam boilers are often insulated across the entire body, with the exception of the front section—namely the boiler door, which must remain operable. The insulation is typically made of mineral wool or polyurethane foam, covered with a metal cladding of any suitable sheet material.
The function of thermal insulation in such equipment is well known.
Most importantly, it reduces heat losses from the system, thereby increasing boiler efficiency, while also protecting plant personnel from dangerous accidental burns by significantly lowering the surface temperature of the equipment.

What about the uninsulated boiler doors and outlet then? Do they need to remain exposed? Of course not.

Removable, reusable SUM Guard thermal insulation covers ensure that the entire unit is tightly insulated.

Comprehensive and precise insulation prevents the air inside the boiler room from heating up, improving workplace comfort.