Flue Gas Waste Heat RecoverySidel Systems proudly manufactures the full line of SRU Series Flue Gas Waste Heat Recovery Units. Helps in Saving Money, Increase Profits, Reduce ‘Carbon Footprint’, and Conserve the World’s #1 Natural Resource. Our SRU waste heat recovery units (flue gas condensers) can typically raise your boiler or appliance efficiency to 90-95% and reduce your energy costs by 10-15%. You will be 100% Satisfied with the Money Saved, CO2, Reduced Water Conserved, and our truly exceptional Service. Simply Call 805 462-1250 Today To Chat With Sid And Request Your Info Packet.