Wilo-Varios PICO-STG: One Pump for Almost All Applications

Familiar Scenario? It's the Weekend, Emergency Call, and the Boiler Pump Has Just Failed

When a plumber receives a call for an emergency pump replacement, they are under pressure. The customer needs a functioning heating system right now. However, each manufacturer has different dimensions, connections, and parameters. Finding the right model takes time, which you simply don't have in a crisis situation.

And then there are new buildings where you need a universal solution that covers various applications – from radiators to solar systems.

What if there was a pump that solves most situations?

This is precisely why the Wilo-Varios PICO-STG was created – a circulation pump designed as a universal replacement for most older and new models on the market.

Two types of pumps can replace up to 85% of all applications in family homes and semi-detached houses. For plumbers, this means fewer stocks, faster service. For end customers, it means greater assurance and energy savings.

Two Models That Cover Almost Everything

Wilo-Varios PICO-STG 15/1-8 130 mm

A replacement for most OEM pumps integrated in devices – not only in boilers but also in:

• heat pumps
• hot water tanks
• compact heating units

Thanks to its compact dimensions, it fits into confined spaces where a standard pump wouldn't fit.

Wilo-Varios PICO-STG 25/1-8 180 mm

A universal circulation pump for most common applications:

• radiator heating
• underfloor heating
• cooling systems
• solar systems
• geothermal systems

Main Advantages

For Plumbers:

• Only two models cover most installations
• Quick connection using Wilo-Connector or Molex – no special tools required
• Easy setup thanks to the Sync Assistant function
• Compact design for installation even in tight conditions

For Users:

• Energy-efficient operation (EEI index ≤0.20)
• 5-year warranty
• Three operating modes (radiators, underfloor heating, fixed speed)
• iPWM control suitable for solar and geothermal applications

How to Set Up the Pump – Easier Than You Think

One of the greatest advantages of the Varios PICO-STG is its simple commissioning.

You have the choice of:

• Wilo online guide – enter basic data and the system suggests optimal settings
• Wilo-Assistant mobile app – the Sync Assistant function copies the characteristic curve of the old pump and sets up the new one within minutes

Manual Setup (if you prefer the classic way):

1. Press and hold both green buttons for 3 seconds → activates programming mode
2. Use the bottom button to select functions (radiators / underfloor heating / fixed speed)
3. Use the top button to change the position of the LED indicator
4. Briefly press both buttons to save the settings

Clear LED indicators and the pump is ready for operation. Intuitive control can be managed even by less experienced users.

Recommended Accessories

For maximum efficiency, we recommend:

Thermal insulation jacket (4206066)

• Minimizes heat loss
• Reduces overall energy consumption
• Protects against moisture
• 100% recyclable

iPWM signal cable (4222049)

• For external pump control
• Simple connection to the iPWM interface
• Easy installation with plug and terminals

Practical Examples from Practice

Emergency Replacement on the Weekend A plumber has only one universal pump with them, and the customer's heating works immediately – without unnecessary searching for a specific model.

New Building with Underfloor Heating The universal pump also covers future system needs if you decide to expand the system.

Modernization with Solar Heating Thanks to iPWM regulation, it operates efficiently even under fluctuating operating conditions.

Geothermal Heating Long and continuous operation without unnecessary energy losses.

Why Wilo-Varios PICO-STG?

Because it saves time, space, and energy. Just have two types of pumps and solve 85% of all situations.

Select Wilo-Varios PICO-STG Pumps
We are happy to assist you with selecting the specific model and accessories.