
Laars Heating Systems 2400-005 Pump
The Laars Heating Systems 2400-005 Pump is a high-performance 115v circulating pump engineered specifically for closed-loop hydronic heating applications. Built with a rugged cast iron pump body and 1/25 HP motor, this unit serves as the primary circulator pump for boilers, radiant floor heating, and fan coils. It is a direct fit for Laars boiler parts catalogs and acts as a reliable replacement for the Grundfos UP15-42F model. With a maximum flow rate of 17 GPM and a max head of 15 feet, it ensures consistent thermal distribution across residential and light commercial zones.
Designed for professional-grade reliability, the hydronic circulator features built-in motor protection and stainless steel internal components to resist corrosion in closed loop heating systems. The flanged connection design simplifies installation and maintenance for field technicians. Operating at a quiet decibel level, it maintains system pressure up to 145 PSI while handling fluid temperatures from 36°F to 230°F, making it a versatile HVAC replacement part for diverse mechanical room configurations.
Key Benefits- Broad Compatibility: Seamlessly integrates with Laars Heating Systems and serves as a high-efficiency alternative to the Grundfos UP15-42F.
- Durable Construction: Heavy-duty cast iron housing and stainless steel internals provide long-term resistance against wear and corrosion.
- Optimized Performance: Delivering up to 17 GPM, this pump ensures uniform heat distribution in radiant and baseboard radiant systems.
- Technician-Friendly Design: The flanged x flanged connection allows for rapid drop-in replacement, reducing downtime during emergency service calls.
- Quiet Operation: Engineered for sound-sensitive environments, providing reliable circulation without mechanical vibration noise.
Is this pump compatible with solar heating or open-loop systems?
The 2400-005 is specifically designed for closed-loop hydronic systems. While its cast iron body is ideal for heating loops, it should not be used in open-loop potable water systems where oxygen-rich water could lead to premature oxidation.
What should I check if the pump is running but not moving water?
Verify that there is no air trapped in the lines, as airlocks are a common cause of flow failure. Also, inspect the impeller for debris or blockages that may be obstructing the 1/25 HP motor's torque.
How do I confirm if my existing flanges will work with this unit?
This unit features a standard flanged connection. To ensure a leak-free seal, always use the included Gaskets (O-rings) and torque the bolts evenly according to standard hydronic piping practices.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $339.78
-65%$339.78
$118.92Laars Heating Systems 2400-005 Pump
The Laars Heating Systems 2400-005 Pump is a high-performance 115v circulating pump engineered specifically for closed-loop hydronic heating applications. Built with a rugged cast iron pump body and 1/25 HP motor, this unit serves as the primary circulator pump for boilers, radiant floor heating, and fan coils. It is a direct fit for Laars boiler parts catalogs and acts as a reliable replacement for the Grundfos UP15-42F model. With a maximum flow rate of 17 GPM and a max head of 15 feet, it ensures consistent thermal distribution across residential and light commercial zones.
Designed for professional-grade reliability, the hydronic circulator features built-in motor protection and stainless steel internal components to resist corrosion in closed loop heating systems. The flanged connection design simplifies installation and maintenance for field technicians. Operating at a quiet decibel level, it maintains system pressure up to 145 PSI while handling fluid temperatures from 36°F to 230°F, making it a versatile HVAC replacement part for diverse mechanical room configurations.
Key Benefits- Broad Compatibility: Seamlessly integrates with Laars Heating Systems and serves as a high-efficiency alternative to the Grundfos UP15-42F.
- Durable Construction: Heavy-duty cast iron housing and stainless steel internals provide long-term resistance against wear and corrosion.
- Optimized Performance: Delivering up to 17 GPM, this pump ensures uniform heat distribution in radiant and baseboard radiant systems.
- Technician-Friendly Design: The flanged x flanged connection allows for rapid drop-in replacement, reducing downtime during emergency service calls.
- Quiet Operation: Engineered for sound-sensitive environments, providing reliable circulation without mechanical vibration noise.
Is this pump compatible with solar heating or open-loop systems?
The 2400-005 is specifically designed for closed-loop hydronic systems. While its cast iron body is ideal for heating loops, it should not be used in open-loop potable water systems where oxygen-rich water could lead to premature oxidation.
What should I check if the pump is running but not moving water?
Verify that there is no air trapped in the lines, as airlocks are a common cause of flow failure. Also, inspect the impeller for debris or blockages that may be obstructing the 1/25 HP motor's torque.
How do I confirm if my existing flanges will work with this unit?
This unit features a standard flanged connection. To ensure a leak-free seal, always use the included Gaskets (O-rings) and torque the bolts evenly according to standard hydronic piping practices.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Laars Heating Systems 2400-005 Pump is a high-performance 115v circulating pump engineered specifically for closed-loop hydronic heating applications. Built with a rugged cast iron pump body and 1/25 HP motor, this unit serves as the primary circulator pump for boilers, radiant floor heating, and fan coils. It is a direct fit for Laars boiler parts catalogs and acts as a reliable replacement for the Grundfos UP15-42F model. With a maximum flow rate of 17 GPM and a max head of 15 feet, it ensures consistent thermal distribution across residential and light commercial zones.
Designed for professional-grade reliability, the hydronic circulator features built-in motor protection and stainless steel internal components to resist corrosion in closed loop heating systems. The flanged connection design simplifies installation and maintenance for field technicians. Operating at a quiet decibel level, it maintains system pressure up to 145 PSI while handling fluid temperatures from 36°F to 230°F, making it a versatile HVAC replacement part for diverse mechanical room configurations.
Key Benefits- Broad Compatibility: Seamlessly integrates with Laars Heating Systems and serves as a high-efficiency alternative to the Grundfos UP15-42F.
- Durable Construction: Heavy-duty cast iron housing and stainless steel internals provide long-term resistance against wear and corrosion.
- Optimized Performance: Delivering up to 17 GPM, this pump ensures uniform heat distribution in radiant and baseboard radiant systems.
- Technician-Friendly Design: The flanged x flanged connection allows for rapid drop-in replacement, reducing downtime during emergency service calls.
- Quiet Operation: Engineered for sound-sensitive environments, providing reliable circulation without mechanical vibration noise.
Is this pump compatible with solar heating or open-loop systems?
The 2400-005 is specifically designed for closed-loop hydronic systems. While its cast iron body is ideal for heating loops, it should not be used in open-loop potable water systems where oxygen-rich water could lead to premature oxidation.
What should I check if the pump is running but not moving water?
Verify that there is no air trapped in the lines, as airlocks are a common cause of flow failure. Also, inspect the impeller for debris or blockages that may be obstructing the 1/25 HP motor's torque.
How do I confirm if my existing flanges will work with this unit?
This unit features a standard flanged connection. To ensure a leak-free seal, always use the included Gaskets (O-rings) and torque the bolts evenly according to standard hydronic piping practices.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












