This is a natural gas, vent free, blue flame heater that produces 30,000 BTU"s of efficient, comfortable heat. This safe, clean-burning heater has a five setting heat control, low oxygen shut off sensor and burns 99.9% efficient. This unit does not require electricity and is easily installed as a wall mount unit or as a free standing unit with the included feet kit. Battery powered spark igniter (AA battery included), and blower fan for increased air circulation. This CSA certified heater will heat up to 600 square feet and comes with a limited two year warranty.. Cannot ship to Massachusetts, California or Canada