The new PTS/PTU series low-intensity infrared tube heater from Space-Ray comes with a Tube Integrity Safety System (TISS) that the company says provides additional safety for building owners. Available in both natural and propane gas, the tube heaters use positive pressure to push products of combustion through the heavy-duty calorized aluminized or alumatherm steel combustion chamber.

CSA-Certified, the heaters come with a choice of one-stage or two-stage input controls. Available in straight, L-shaped, Z-shaped or U-shaped configurations, with capacities ranging from 40,000 to 200,000 BTU/hr.