ECR International Inc. (ECR) has announced the addition of two floor-standing condensing boiler models, the MACF-150 and MAHF-125, that meet ENERGY STAR Most Efficient status. These combi and space heating boilers respectively are an extension of the company's current wall-hung MAC and MAH product families. Both models feature ECR's [AI] Control Technology. With this innovation, the boiler automatically calibrates with the touch of two buttons. The onboard combustion control recognizes natural or LP gas, then continuously monitors the flame signal and adjusts gas and air flow to optimize efficiency and fuel savings.

In addition, the company's [AI] control technology is programmed to recognize the presence of an indirect tank. Utica Boilers H2O indirect tanks range from 30 to 115-gallon capacities and feature 316L stainless steel or glass-lined construction designed for easy installation.

Both the MACF-150 and MAHF-125 models feature a stainless steel heat exchanger and offer AFUE of 95 percent. The MACF-150 is also equipped with a stainless steel brazed plate heat exchanger. The firing rate modulates up to 7:1 turndown ratio in DHW mode, and 5.7:1 turndown modulation ratio in heating mode. When in domestic hot water mode, the MACF-150 Combi will fire at 153 MBH and provide up to 3.5 gallons/minute of domestic hot water at a 70-degree rise. Both models are rated at 125 MBH in Central Heating Mode.

“We designed the MACF-150 & MAHF-125 boilers to simplify installations where cast iron boilers are being upgraded to condensing high-efficiency units,” said Michael Klas, director of sales and marketing. “These models, which are significantly lighter and more compact than cast iron boilers, reduce the need to re-route piping and provide a cost savings alternative to wall hung condensing boilers when wall space is not readily available.”

Both products are featured on the Utica Boilers website and are available where HVAC products are sold.