Models LX-200 and LX-50 provide on-demand steam generation and fuel savings. The once-through fintube design heats a smaller volume of water more efficiently. Combined with built-in precision microprocessor-control technology, the boilers help conserve fuel. The fintube design also enables the boilers to generate full steam from a cold start in 5 min or less. The modular on-demand steam capability makes them well-suited to a multiple installation in which boilers can be selectively turned on or off as needed to efficiently manage changing load conditions rather than idling in standby and consuming energy.