The BritTherm P1 25/6-130 is a high-efficiency cast iron heating circulator with an EEI of 0.20 or lower, delivering up to 6 m head and 3.7 m³/h. It is built for a like-for-like replacement for most standard domestic 130 mm circulators.
Four programs are set with one button: AUTO, which reads the system and sets itself, and three fixed speeds for set-and-forget installations. Automatic night power reduction drops consumption to 5 W in the quiet hours, and it is backed by a 6-year guarantee when registered.
EEI ≤ 0.20
Energy efficiency
130 mm
Port-to-port length
6 years
Guarantee when registered
Fits existing pipework
Standard 130 mm and 180 mm port-to-port lengths and standard union sizes mean it usually goes in on the existing pipework. Check the port-to-port distance (130 mm) and connection size (1½ in.) against the old pump before ordering.
Heating circuits only
The P1 has a cast iron body for heating circuits. The temperature class is TF 95 °C, which is a limit and not a working temperature, so do not fit it straight after an oil boiler or on any system where temperature is not controlled. Glycol up to 30% is fine, more is not. Flush the system before fitting.
Safety
Isolate the electrical supply before any work and let the pump cool, as the pump body and motor can get hot. Installation must be carried out by a competent person, and the pump must be earthed. Do not run the pump dry.
Key features
AUTO mode
AUTO mode lets the pump read the system and set itself, with nothing to configure.
Three fixed speeds
Select one of three fixed speeds with a single button, using the full power range from minimum to maximum.
Night power reduction
Automatic night reduction takes consumption down to 5 W without losing system quality. It runs on its own and is not a mode you select.
Built-in protection
Electrical and thermal protection guards against pump breakdown caused by external factors.
Wide application range
Suits radiator circuits, underfloor manifolds, heat pump circuits and solar thermal primaries, in vented and sealed systems.
Complete in the box
Includes a set of nuts, a 1.3 m cable with UK plug, a free insulation jacket and the datasheet.
Choose your size
BritTherm P1 sizes
Model
Port-to-port
Connection
Max head
Max flow
Power
25/6-130 (this pump)
130 mm
1½ in.
6 m
3.7 m³/h
5 to 45 W
25/8-180
180 mm
1½ in.
8 m
5.2 m³/h
12 to 63 W
32/12-180
180 mm
2 in.
12 m
6.1 m³/h
12 to 120 W
Specification
General
Application
Domestic heating circulation
Guarantee
6 years when registered
Hydraulic
Port-to-port length
130 mm
Maximum system pressure
10 bar
Temperature class
TF 95 °C
Electrical
Energy efficiency index
EEI ≤ 0.20
Construction
Frequently asked questions
What can the P1 replace?
The P1 range lists equivalents for Grundfos UP, UPS and ALPHA, Wilo STAR-RS, Yonos Para and Yonos Pico, DAB Evosta, Lowara Ecocirc and Stuart Turner ST circulators. Always match port-to-port length and connection size.
Can I use it for underfloor heating or a heat pump?
Yes. It suits underfloor heating manifolds, heat pump circuits and solar thermal primary circuits, with glycol up to 30%.
What does AUTO do?
The pump reads the heating system and sets itself, minimising energy use without you configuring anything.
Can I use it for domestic hot water?
No. The P1 has a cast iron body for heating circuits. For drinking water use a bronze or stainless steel circulator.
How do I get the 6-year guarantee?
Register the pump with BritTherm. The guarantee is subject to registration and the guarantee terms.
Does it need any extras to install?
The box includes nuts, a 1.3 m cable with UK plug and an insulation jacket. Flush the system before fitting and have the pump installed by a competent person.
