The HTP 7350P-159 Combustion Blower Assembly is a replacement blower designed to support efficient combustion in HTP high-efficiency gas boilers. The electrically powered blower draws fresh air into the system, pushes the air-fuel mixture into the combustion chamber, and helps move exhaust gases toward the venting system. It is used with HTP Elite EL-220, EL-299, and EL-399 boilers, a... https://www.partshnc.com/htp-7350p-159-combustion-blower-assembly-el220-399