Collection: McDonnell & Miller

Shop McDonnell & Miller low water cutoffs, flow switches, and boiler controls at New England Supply House. McDonnell & Miller — an ITT brand — has been the industry standard for boiler safety controls for over a century. Their low water cutoffs protect boilers from operating without sufficient water, preventing dangerous conditions and costly equipment damage.

Our McDonnell & Miller inventory includes float-type and electronic low water cutoffs, combination low water cutoff and pump controllers, flow switches, and boiler accessories for steam and hot water systems. Boiler technicians and plumbing contractors throughout New England rely on McDonnell & Miller for dependable boiler safety. We stock a full range of residential and commercial part numbers with same-day shipping available.