Riello RTQ 3S
Riello Tregi
Frequently Asked Questions
Suntec supplies Riello hot water generators (as the exclusive Indian distributor) and Tregi brand hot water boilers, covering both domestic and commercial hot water production.
The Tregi brand hot water boilers supplied by Suntec, built as cast iron 3-pass sectional boilers with pressure jet oil or gas burners, deliver 90%+ combustion efficiency.
A 3-pass sectional boiler (as used in the Tregi range) is a cast iron boiler design with a wet base furnace, removable turbulators, and finned flue passes — engineered to extract maximum heat from combustion gases before they exit, improving overall efficiency.
Yes. Riello boilers supplied by Suntec include flame reversal combustion chambers designed for central heating and domestic hot water production, while the Tregi range is built specifically for commercial-scale hot water needs.
Suntec’s featured hot water boiler models include the Riello RTQ 3S and Riello Tregi.
Commercial hot water boilers from Suntec are commonly used by hotels, bungalows, and hospitals for central heating and continuous hot water supply.