Armstrong Unveils New Models of S&H Circulators Featuring ECM Motors with 20% Energy Savings

10.09.2025
Armstrong Fluid Technology has introduced five new models of S&H circulators (H-32, H-41, S-25, S-35 and S-45/S46). These new circulators include a 1/3 hp ECM motor that saves 20% on energy. All S&H circulators are available in a permanently lubricated, maintenance-free design.
Armstrong Unveils New Models of S&H Circulators Featuring ECM Motors with 20% Energy Savings

Armstrong S&H Circulators (Image source: Armstrong Fluid Technology)

Commenting on the release of the new models, and the energy saving ECM motor, Tanvir Rahman, Offering Manager, Standard Building Products, noted: “S&H ECM circulators represent a durable, proven design that can serve any type of residential or light commercial installation. With an enormous installed base of constant speed models, we are very pleased to now offer an energy efficient ECM motor to simplify replacement.”

Key features of the new S&H circulators include:

  • ECM motors deliver efficiency savings of up to 20%
  • Maintenance-free design means no oiling is required
  • Permanently-lubricated ball bearings
  • EPDM mechanical seal withstands high temperatures and provides longer seal life
  • Modular design supports a wide range of motor options
  • Easy to repair and rebuild

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