🧊 What is a Mini Pump

A mini condensate pump is a small, electrically powered pump designed to lift condensate water from the indoor unit to a suitable drainage point. It’s typically installed inside or near the indoor unit of a mini split system. Sauermann mini pumps are also suitable for ducted and console units. 

➜ The reliability of Sauermann pumps in 5 major qualities 
➜ 6 Things to Consider when Choosing an AC Condensate Pump 
 

⚙️ How a Mini Condensate Pump Works 

• Condensate Collection: As the mini split cools the air, moisture condenses on the evaporator coil and drips into a drain pan. 
• Float Switch Detection: A float switch inside the pump or reservoir detects the water level. When the water reaches a certain height, the float rises and activates the pump. 
• Pump Activation: The pump turns on and pushes the water through tubing to a drain point (e.g., outside, into a sink, or a drain pipe).  
• Automatic Shutoff: Once the water level drops, the float switch lowers and turns off the pump. This cycle repeats as needed. 
   

✅ Advantages 

• Allows installation of mini split units without gravity drainage. 
• Prevents water overflow and potential damage. 
• Compact and quiet operation 
• How to reduce the noise from a mini condensate removal pump 
  ➜ Si-30: Safe, Silent, and Helps with the Cleaning: Your Perfect Partner 
• Includes alarm features 
  ➜ Connecting a mini pump alarm circuit: why it matters and how to do it 

✔️Choose the best mini condensate pump for your setup  

1. Inline Pumps 

• Easily fits inside any type of air conditioning unit or lineset cover. 
• Ideal for concealed installations. 
  👉 Check the Sauermann Si-20 

2. Wall-Mounted Pumps 

• Mounted externally near the mini split unit. 
• Easier to access for maintenance. 
  👉 Check the Sauermann Omega Pack 2 or Delta Pack 

3. Remote Reservoir Pumps 

• Feature a separate reservoir and pump body. 
• Offer flexible placement options. 
  👉 Check the Sauermann Si-30 or Si-33 

➜ Discover all our mini condensate removal pumps 

🏠 How do I find a distributor?  

You have a question about the price of our mini split condensate pumps? How can you find your nearest Sauermann condensate pump distributor? 
You can use our interactive map: "Where to buy".  

🛠️Installation Tips

Proper installation ensures optimal performance and longevity: 

1. Turn off the unit before installation. 
2. Check voltage compatibility to avoid electrical issues. 
3. Secure tubing with metal clips or zip ties to prevent leaks. 
   ➜ Ten checks to prevent water leaks from air conditioning units 
4. Install anti-siphon devices to avoid backflow. 
5. Test the pump by filling the reservoir with water to confirm activation. 

For visual guidance, check out our ▶️Installation videos. 
 

🔍Maintenance Advice 

Routine maintenance keeps your pump running smoothly: 

• Clean the reservoir and filter every 3–6 months. 
• Inspect wiring and tubing for wear or leaks. 

 
Sauermann offers a range of spare parts for mini pumps to extend the life of the pump and avoid unnecessary waste.