Grundfos 99452458, 3/4″ Sweat, UP15-10BUC7/LC, 1-SPEED, Bronze Circulator Pump, 115V, 1/25 HP

Grundfos 99452458 bronze circulator pump

The Grundfos 99452458 is a single-speed bronze circulator pump from the Grundfos UP series. It uses a 3/4″ sweat connection and runs on 115V at 1/25 HP. Because the housing is bronze rather than cast iron, it handles open systems where fresh water is continually introduced.

Cast iron circulators are the usual choice for closed loops. However, cast iron corrodes quickly in an open domestic hot water loop. Therefore a bronze housing like this one is the correct specification for recirculation duty.

Product details

• Manufacturer: Grundfos
• Part number: 99452458
• Model: UP15-10BUC7/LC
• Connection: 3/4″ sweat
• Housing material: bronze
• Speeds: 1
• Voltage: 115V
• Motor: 1/25 HP
• Frequency: 60 Hz
• Series: UP

Common applications

This pump is designed for hot water and hydronic duty. Typical uses include the following:

• Domestic hot water recirculation
• Solar water heating loops
• Radiant floor heating
• Boiler and hydronic heating
• Hydronic and fan-coil heating
• Ground-source heat pump loops

In each case the pump moves water or a water and glycol mix through the loop. As a result, hot water reaches fixtures faster and heat output stays steady across the zone.

Choosing the right housing

Match the housing to the system, not just the pipe size. Closed systems generally accept cast iron. Open systems need bronze or stainless steel. For example, a hot water recirculation line is an open system, so bronze is the right call. If you are unsure, send us your model and we will confirm the correct replacement.

Why buy from Cedars HVAC

We stock genuine OEM equipment, never unbranded copies. Orders ship free inside the United States. In addition, our team works in this trade every day, so we can help you confirm fitment before you buy. Browse more circulator pumps to complete your job.

Shipping and returns

This item ships free from our United States warehouses. Most orders leave the same or next business day. Returns are accepted on unused items in original packaging. Freight items may require a delivery appointment.