Circulator Pumps

Circulator pumps move water or other compatible liquids through heating, hot domestic water, cooling, and air-conditioning system loops. Used by HVAC, plumbing, and facility maintenance teams in residential and commercial settings, these pumps support continuous circulation for applications ranging from hot-water recirculation to larger heating and air-conditioning installations.

Product Display:
Helpful Buying Guide

Choose a circulator pump for your system requirements

Compare the pump’s intended application, housing material, electrical configuration, operating style, and stated pressure or temperature limits. The available options include maintenance-free dry-motor pumps, wet-rotor pumps, serviceable three-piece pumps, and adjustable three-speed models.

Visual Guide

Popular examples in this category

Use Cases

Support circulating-water and HVAC loops

Available pumps are used to circulate water or compatible liquids through heating systems, hot domestic water loops, cooling systems, air-conditioning systems, and hot-water recirculation applications.

How to Choose

Match the pump to the installation

Confirm the system application, voltage, motor configuration, housing material, and whether fixed or three-speed operation is appropriate. Check stated pressure and temperature limits where provided.

Applications

Options for residential and commercial systems

The category includes pumps described for large residential and commercial heating and air-conditioning installations, as well as compact circulating-water applications and open or closed hot-water systems.

Additional Information

Compare maintenance and service approaches

Wet-rotor and permanently lubricated designs support reduced routine maintenance, while three-piece oilable pumps provide a repairable configuration for routine upkeep.

115VCommon voltage option

Multiple circulating-water and maintenance-free pump options use 115V power.

3 speedsAdjustable operation

Selected pumps allow speed selection for application needs.

150 PSIGListed maximum pressure

Specified maintenance-free bronze models support systems within this stated limit.

225°FListed maximum temperature

Specified maintenance-free bronze models are suitable within this stated temperature limit.

Comparison Guide

Compare circulator pump types

Use this overview to distinguish the principal pump styles represented in the category.

Pump typeRepresentative featuresApplication considerations
Maintenance-free bronze dry-motorPermanent lubrication; carbon/silicon carbide seal; stainless steel shaft sleeveAvailable in 115V configurations; specified models list 150 PSIG maximum pressure and 225°F maximum temperature.
Wet-rotor circulator water pumpQuiet operation; water-cooled motor on selected models; some are seal-free or three-speedUsed for compatible heating, hot domestic water, cooling, and air-conditioning circulation systems.
Three-piece bronze circulator pumpRepairable three-piece construction; oilable design; sleeve bearingFor buyers seeking a serviceable pump; lists a 125 PSI maximum pressure and up to 250°F with an optional high-temperature seal.
Planning Guide

Plan the right fit before choosing

Pump designs

Select the operating and maintenance style that fits your needs

Pump designs in this category offer different approaches to circulation and upkeep. Wet-rotor models support quiet operation and use system liquid to cool the motor. Maintenance-free dry-motor pumps use permanent lubrication, while three-piece bronze pumps are repairable and oilable.

  • Wet-rotor models are available in fixed-speed and three-speed configurations.
  • Permanently lubricated dry-motor pumps eliminate routine pump lubrication.
  • Three-piece bronze pumps provide a serviceable, oilable design with a sleeve bearing.
  • Some wet-rotor pumps have seal-free construction, eliminating a mechanical seal.
Materials and system matching

Consider housing material, voltage, and stated operating limits

Bronze, cast iron, and stainless steel pump options are represented. Bronze housings are described for hot-water recirculation, cast iron models are intended for compatible heating and air-conditioning systems, and stainless steel options provide a material choice for circulating-water equipment and corrosive fluids.

  • Available electrical configurations include 115V, 230V, and 460V.
  • Listed motor sizes include 1/25 HP, 1/12 HP, 1/6 HP, and 2/5 HP.
  • Specified maintenance-free bronze models are rated to 150 PSIG and 225°F.
  • A three-piece bronze model has a 125 PSI maximum pressure and can operate up to 250°F with an optional high-temperature seal.
Control and service features

Compare speed selection and built-in components

Three-speed pumps allow users to choose among three operating speeds to suit application circulation needs, with summaries noting reduced noise and power consumption. Certain models also include built-in motor protection, removable check valves, or serviceable construction.

  • Three-speed operation is offered on bronze, cast iron, and stainless steel options.
  • Built-in motor protection is featured on selected wet-rotor pumps.
  • One stainless steel hot-water pump includes an integrated removable check valve.
  • A serviceable 115V wet-rotor pump is designed for straightforward installation and service.
FAQ

Common questions before buying

What systems can circulator pumps support?

The available pumps are described for compatible heating, hot domestic water, cooling, air-conditioning, and hot-water recirculation systems.

What is the difference between wet-rotor and dry-motor pumps?

Wet-rotor pumps support quiet operation and may use system liquid to cool the motor. The dry-motor pumps shown are permanently lubricated and designed to reduce routine lubrication needs.

Are three-speed circulator pumps available?

Yes. Three-speed models are available in bronze, cast iron, and stainless steel options, allowing users to select a speed suited to the application.

Which materials are available?

The category includes bronze, cast iron, and stainless steel pump constructions.

Helpful Buying Guide

Choose a circulator pump for your system requirements

Compare the pump’s intended application, housing material, electrical configuration, operating style, and stated pressure or temperature limits. The available options include maintenance-free dry-motor pumps, wet-rotor pumps, serviceable three-piece pumps, and adjustable three-speed models.

Visual Guide

Popular examples in this category

Use Cases

Support circulating-water and HVAC loops

Available pumps are used to circulate water or compatible liquids through heating systems, hot domestic water loops, cooling systems, air-conditioning systems, and hot-water recirculation applications.

How to Choose

Match the pump to the installation

Confirm the system application, voltage, motor configuration, housing material, and whether fixed or three-speed operation is appropriate. Check stated pressure and temperature limits where provided.

Applications

Options for residential and commercial systems

The category includes pumps described for large residential and commercial heating and air-conditioning installations, as well as compact circulating-water applications and open or closed hot-water systems.

Additional Information

Compare maintenance and service approaches

Wet-rotor and permanently lubricated designs support reduced routine maintenance, while three-piece oilable pumps provide a repairable configuration for routine upkeep.

115VCommon voltage option

Multiple circulating-water and maintenance-free pump options use 115V power.

3 speedsAdjustable operation

Selected pumps allow speed selection for application needs.

150 PSIGListed maximum pressure

Specified maintenance-free bronze models support systems within this stated limit.

225°FListed maximum temperature

Specified maintenance-free bronze models are suitable within this stated temperature limit.

Comparison Guide

Compare circulator pump types

Use this overview to distinguish the principal pump styles represented in the category.

Pump typeRepresentative featuresApplication considerations
Maintenance-free bronze dry-motorPermanent lubrication; carbon/silicon carbide seal; stainless steel shaft sleeveAvailable in 115V configurations; specified models list 150 PSIG maximum pressure and 225°F maximum temperature.
Wet-rotor circulator water pumpQuiet operation; water-cooled motor on selected models; some are seal-free or three-speedUsed for compatible heating, hot domestic water, cooling, and air-conditioning circulation systems.
Three-piece bronze circulator pumpRepairable three-piece construction; oilable design; sleeve bearingFor buyers seeking a serviceable pump; lists a 125 PSI maximum pressure and up to 250°F with an optional high-temperature seal.
Planning Guide

Plan the right fit before choosing

Pump designs

Select the operating and maintenance style that fits your needs

Pump designs in this category offer different approaches to circulation and upkeep. Wet-rotor models support quiet operation and use system liquid to cool the motor. Maintenance-free dry-motor pumps use permanent lubrication, while three-piece bronze pumps are repairable and oilable.

  • Wet-rotor models are available in fixed-speed and three-speed configurations.
  • Permanently lubricated dry-motor pumps eliminate routine pump lubrication.
  • Three-piece bronze pumps provide a serviceable, oilable design with a sleeve bearing.
  • Some wet-rotor pumps have seal-free construction, eliminating a mechanical seal.
Materials and system matching

Consider housing material, voltage, and stated operating limits

Bronze, cast iron, and stainless steel pump options are represented. Bronze housings are described for hot-water recirculation, cast iron models are intended for compatible heating and air-conditioning systems, and stainless steel options provide a material choice for circulating-water equipment and corrosive fluids.

  • Available electrical configurations include 115V, 230V, and 460V.
  • Listed motor sizes include 1/25 HP, 1/12 HP, 1/6 HP, and 2/5 HP.
  • Specified maintenance-free bronze models are rated to 150 PSIG and 225°F.
  • A three-piece bronze model has a 125 PSI maximum pressure and can operate up to 250°F with an optional high-temperature seal.
Control and service features

Compare speed selection and built-in components

Three-speed pumps allow users to choose among three operating speeds to suit application circulation needs, with summaries noting reduced noise and power consumption. Certain models also include built-in motor protection, removable check valves, or serviceable construction.

  • Three-speed operation is offered on bronze, cast iron, and stainless steel options.
  • Built-in motor protection is featured on selected wet-rotor pumps.
  • One stainless steel hot-water pump includes an integrated removable check valve.
  • A serviceable 115V wet-rotor pump is designed for straightforward installation and service.
FAQ

Common questions before buying

What systems can circulator pumps support?

The available pumps are described for compatible heating, hot domestic water, cooling, air-conditioning, and hot-water recirculation systems.

What is the difference between wet-rotor and dry-motor pumps?

Wet-rotor pumps support quiet operation and may use system liquid to cool the motor. The dry-motor pumps shown are permanently lubricated and designed to reduce routine lubrication needs.

Are three-speed circulator pumps available?

Yes. Three-speed models are available in bronze, cast iron, and stainless steel options, allowing users to select a speed suited to the application.

Which materials are available?

The category includes bronze, cast iron, and stainless steel pump constructions.