Case Study: Mary Immaculate Senior Residential Community cuts heating bills by 50% with Intellihot

Intellihot slashes senior housing community’s heating bills by 50%

Mary Immaculate Senior Residential Community in Lawrence, MA, a multi-family senior housing property with three buildings and 900 total units, was dealing with an aging, inefficient hot water system that had become obsolete. The site had been relying on condensing boilers and indirect fired water heaters with 390 gallons of storage, which led to short cycling, wasted energy, and rising operating costs. Intellihot Inc. was brought in to modernize the system.

Intellihot Inc. installed six iQ751 zero-storage water heaters across the three buildings over 18 months, delivering 4,500,000 BTU/hr of capacity with no storage tanks. The new fully modulating, on-demand system improved efficiency, handled the cold groundwater effectively, and cut the facility’s heating bills by roughly 40% to 50%, especially during the summer months. The upgrade also reduced short cycling and extended equipment life, while utility rebates and vendor support helped make the transition smooth.

Mary Immaculate Senior Residential Community

Ebell Vasquez

Housing Manager