15 KW, 3 phase (208/240), yellow heatwave heater. This electric indoor heater eliminates the hassles of fuel-fired heaters (Salamanders). It requires no fuel. Produces no flames. Needs no late night monitoring, and does not require regular maintenance. If your indoor temperature is 10deg F….you could use a 15KW, 240V model to heat up to 12,800 cubic feet of insulated new construction. Normally, this would produce a 60deg F temperature rise in about 2 hours.