Aero therm systems provides thermic fluid heaters and hot water generators. These thermic fluid heaters have capacity that ranges from 30,000 kcal/hr to 20,00,000 kcal/hr. These thermic fluid heaters have maximum operating temperature of 300ºc for thermic fluid and 130ºc for hot water. The concentric coil is made from ms seamless tube of asthma 106 gr-b. The units are equipped with high efficiency oil/gas burners with air pre-heater arrangement which give high thermal efficiency 87 ±2 per cent on ncv. The thermic fluid heaters are outside purview of ibrs.