The MPO-IQ blends unmatched performance with long lasting durability and exclusive energy saving features. Designed as an optimal replacement boiler for millions of homes with existing chimneys, the MPO-IQ has the highest average efficiency in its class. Its rating as high as 87% AFUE, easily exceeds Energy Star levels for efficiency and may qualify for tax credits and/or utility rebates (check for availability in your area). At the heart of the MPO-IQ is an advanced 3-pass cast iron heat exchanger, combined with a well-insulated powder-coated steel jacket. Even the MPO-IQ's Control System is best in class. The IQ Control System allows the MPO-IQ to be easily equipped with an optional Energy Saving control package that can achieve up to a 15% reduction in fuel consumption according to most studies. Ask your contractor today for an MPO-IQ oil-fired boiler; an unmatched combination of advanced features and proven durability.