Old BoilerUnlike the old “monster in the basement”, a modern boiler is remarkably effective at producing heated water, which can then be used in a variety of applications: radiators, radiant floors, kick heaters, domestic water heating, hydronic blowers, snow melting and more.

Cast-iron boilers, oil or gas-fired, offer high efficiency ratings (84-85%) and solid, reliable performance over many years. Great efficiency (up to 95%) in a small package can be found in the new variable output condensing boilers, which can literally hang on the wall.

Tremendous domestic water heating is provided by an indirect water heater, which uses the heating capacity of the boiler to heat household water virtually as fast as it is consumed.