Greenstone Masonry Heaters designs and installs premium soapstone masonry heaters across the USA. Our thermal-mass heating systems are engineered to capture and store heat from clean-burning wood fires, then release comfortable radiant warmth gradually for hours. Greenstone combines proven masonry-heating principles with modern design and craftsmanship. Choose from custom stone, brick, ledgestone, fieldstone, stucco, and other finishes, with options including heated benches and bake ovens. Our goal is simple: efficient, sustainable heating with lasting beauty and comfort.