The Grundfos COMFORT 15-14 B T (93095535) is a compact hot water recirculation pump that keeps hot water available at every tap without the wait. It is installed on the dedicated return line of a domestic hot water loop and is designed for one- and two-family homes.
Its built-in temperature sensor switches the pump on only when the water in the loop cools below a set level, so you get instant hot water while limiting heat loss. The brass pump housing carries a drinking-water approval, and the stainless steel rotor and composite impeller suit water of any hardness.
80 mm
Port-to-port length
Brass
Drinking-water approved housing
Temp control
Built-in sensor mode
Works with most hot water sources
Suitable for all types of water heater cylinders, tankless systems, solar and heat pumps, whether or not mixing or tempering valves are fitted. A dedicated return line is required.
Check before you order
The pump needs an existing dedicated return line back to the cylinder or heat source. It is not a heating circulator. Isolating and non-return valves are fitted as separate fittings where the installation calls for them, so allow for isolation either side of the pump.
Safety
Isolate the electrical supply and let the system cool before working on the pump. Hot water can scald. Pipework and fittings must comply with the Water Supply (Water Fittings) Regulations.
Key features
Automatic temperature control
The internal sensor starts the pump when the water temperature falls below its limit. The on/off temperatures are set automatically and re-checked every 12 hours, so there is no manual setup.
Potable water construction
Brass housing with a drinking-water approval, a stainless steel rotor and a composite impeller make it suitable for domestic hot water.
Built for hard water
The spherical rotor design resists blockage from limescale. The pump head is removable, so descaling is quick without disturbing the housing.
Dry-running protection
Dry-running protection guards the pump if the loop runs out of water and makes commissioning more forgiving.
Compact and quiet
A compact 80 mm body fits confined spaces, and wet-running operation keeps noise low.
Quick to connect
A 1.5 m cable with plug makes the electrical connection simple, and the robust single-bearing ball system supports reliable running.
Specification
General
Manufacturer part number
93095535
Application
Domestic hot water recirculation (dedicated return line)
Hydraulic
Port-to-port length
80 mm
Control mode
Automatic temperature control (internal sensor)
Construction
Pump housing
Brass, drinking-water approved
Rotor
Stainless steel, spherical design
Electrical
Frequently asked questions
What does the T in COMFORT 15-14 B T mean?
T stands for temperature control. The pump runs only when its internal sensor sees the water in the loop drop below a set temperature.
Do I need a return pipe?
Yes. The pump is designed for systems with a dedicated return line from the furthest tap back to the water heater. Without one, recirculation is not possible.
Will it work with a heat pump cylinder or solar system?
Yes. Grundfos states that the COMFORT range is compatible with all water heater types, tankless systems, solar and heat pumps, with or without mixing or tempering valves.
Is it suitable for hard water areas?
Yes. The spherical rotor and brass housing are designed for water of any hardness, and the pump head can be removed to clear limescale.
Does it come with a plug?
It is supplied with a 1.5 m cable and plug for a quick connection.
Can it be used on a central heating circuit?
No. COMFORT is a hot water recirculation pump. For heating circuits choose a heating circulator from the ALPHA, UPS2 or UPS range.
