Heating system that burns natural gas.

Roget 386: furnace, stove, kiln, oven; cracker; hearth, focus, combustion chamber; athanor^†, hypocaust^†, reverberatory; volcano; forge, fiery furnace; limekiln; Dutch oven; tuyere, brasier^†, salamander, heater, warming pan; boiler, caldron, seething caldron, pot; urn, kettle; chafing-dish; retort, crucible, alembic, still; waffle irons; muffle furnace, induction furnace; electric heater, electric furnace, electric resistance heat.    [steel-making furnace] open-hearth furnace.    fireplace, gas fireplace; coal fire, wood fire; fire-dog, fire-irons; grate, range, kitchener; caboose, camboose^†; poker, tongs, shovel, ashpan, hob, trivet; andiron, gridiron; ashdrop; frying-pan, stew-pan, backlog.    [area near a fireplace] hearth, inglenook.    [residential heating methods] oil burner, gas burner, Franklin stove, pot-bellied stove; wood-burning stove; central heating, steam heat, hot water heat, gas heat, forced hot air, electric heat, heat pump; solar heat, convective heat.    hothouse, bakehouse^†, washhouse^†; laundry; conservatory; sudatory^†; Turkish bath, Russian bath, vapor bath, steam bath, sauna, warm bath; vaporarium^†.    ... show more