By using some basic controls and condensing enhancing techniques such as stack robbers, domestic water preheating, and HRV air preheating, you can reach 97% efficiency.
Thousands of installations worldwide have proven the FCX boiler to be most reliable and efficient. The FCX features a steel, primary non-condensing heat exchanger coupled to a condensing, stainless secondary heat exchanger. A built-in three-way mixing valve permits all-season comfort at maximum efficiency. The FCX has dual-temperature circuit capability, which makes combining low and high-temperature applications in the same structure quick and easy. It is ideal for year-round domestic hot water and is so silent, clean and nicely finished that it can be installed almost anywhere within most buildings.
