IAMU Associate Member VHF Sales, Inc. represents 10 of the world's best commercial-grade HVAC and heat recovery, co-generation equipment manufacturers. Two featured manufacturer lines represented are by AERCO International and MacroAir. AERCO condensing boilers and water heaters provide turndown ratios of up to 30:1 while providing 98% efficiency on natural gas. This is accomplished by their patented technology. AERCO also provides heat recovery co-generation systems for stack exhaust. MacroAir’s HVLS DC Fans are ready for solar or AC power and can be ordered in diameters up to 24 feet. Please check out VHF Sale’s website at www.vhfsales.com or contact Bruce Greiner at 515-986-3671 to learn about VHF Sales, Inc.’s high quality lines of commercial grade energy efficient equipment.