Automatic Condensate Removal Pump for Mini Split Air Conditioner

Are you trying to buy your first mini-split air conditioner or do you want to replace your old condensate pump with something new and better? Then it would be best to read this guide to know what you need to know about the mini-split units. In this post, we’ll review the six best mini-split condensate pumps in 2021, considering their voltage, noise level, placement type, safety features, and overall benefits.

We also included a buyer guide, summary, and FAQs to make it more fun and easier for you to decide on what mini-system is best suitable for your home’s unique cooling and heating requirements. Now, what is a mini-split?

Top 3 Mini-Split Condensate Pumps

FUJIWARA Condensate Mini Pump
FUJIWARA Condensate Pump
Max Lift:32ft.
Flow Rate:10.5 GPH
Tank Capacity: 150ml
Sound Level:18-21dB
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Little Giant Automatic Condensate Pump
Little Giant Condensate Pump
Max Lift:20ft.
Flow Rate:80 GPH
Tank Capacity: 1/2-gallon
Motor:1/30 HP
PriceDetail review
Sauermann Si-30 Mini Condensate Removal Pump
Sauermann Condensate Pump
Max Lift:33ft.
Flow Rate:5 GPH
Tank Capacity: 150ml
Sound Level:20dB
PriceDetail review
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What are Mini-Split Condensate Pumps?

A mini-split condensate pump is an efficient piece of equipment for delivering continuous conditioned air to your entire home. It uses a ductless system to cool or heat a specific room of your home at a time. Hence, also known as ductless mini-split air conditioners and heaters.

Common reasons why condensate pump keep running continuouslyA mini-split system allows you to control the temperature in your home to your preference without worrying about ductwork. It’s a great centralized heating solution (or cooling solution) suitable for period houses, tiny homes, temperature-controlled sheds or workshops, garage conversions, or any space lacking existing overhead ductwork.

You can also use this cooling and heating equipment as a supplemental system to cool or heat areas that are hard to keep comfy.

Mini Split Condensate Pump Installation

Mini split condensate pumps rely heavily on correct installation to function properly. Important procedures to take during installation are as follows:

a) Determine Optimal Pump Location: Identify the best location for the condensate pump, considering factors such as accessibility, proximity to the mini split system, and the discharge point for the condensate. Choose a spot where the pump can be securely mounted and easily maintained.

b) Connect the Drain Lines: Connect the condensate drain line from the mini split unit to the pump’s inlet port. Ensure a secure connection using appropriate fittings or clamps. Use a level or slope the drain line slightly downward to facilitate proper condensate flow towards the pump.

c) Install the Discharge Line: Connect the discharge line to the pump’s outlet port. Direct the discharge line away from the building or into a suitable drainage system, ensuring proper disposal of the condensate. Check local regulations for any specific requirements.

d) Secure the Pump: Mount the condensate pump securely using brackets or other recommended methods. Ensure it is level to prevent vibration or noise issues. Follow the manufacturer’s instructions for proper mounting techniques.

e) Connect Power Supply: Make the necessary electrical connections for the pump, adhering to local electrical codes. Ensure proper grounding and safety precautions. Test the pump after connecting the power supply to verify its functionality.

Top 6 Mini-Split Condensate Pump Reviews

It’s tough to pick one product when you have many products from different brands making similar claims. So, we’ve done the hard work for you. Here are the best six condensate pumps for air conditioners on the market. After reading this review, making a decision will become easier for you.

So, let’s get started.

Best for small design

FUJIWARA Automatic Condensation Removal Pump

FUJIWARA Exquisite Automatic Condensation Drain Removal Pump

  • Max Lift: 32 feet
  • Flow Rate: 10.5 GPH
  • Tank Capacity: 150ml

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The FUJIWARA Condensate Mini-Pump is small exquisite design equipment suitable for removing condensate from various appliances. It’s a fully automatic unit that comes with the necessary mini split condensate pump kits you’ll need for its quick installation.

The mini pump is equipped with the new probe induction technology to prevent abnormal drainage in case of a sudden float displacement.

This wall-mounted drain pump features a high lift (up to 32ft); the drain height takes care of maximum condensate problems in most places. Thanks to its low sound output (below 18 decibels), you can use it in any indoor environment without worrying about noise.

It requires a low voltage supply of 100-200V and 3W power to run and won’t add to your electric bill.

Best for high performance

Little Giant Automatic Condensate Pump

Little Giant Automatic Condensate Pump

  • Max Lift: 20 feet
  • Flow Rate: 80 GPH
  • Tank Capacity: 1/2-gallon

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The Little Giant Automatic Condensate Pump is a sturdy pump suitable for residential, commercial, and industrial use. It features three inlet drain holes to allow for multiple connections of appliances to the pump for versatile discharge operation.

The pump offers an effective way to collect, detect, and automatically remove condensate from various appliances, including air conditioners and high-efficiency furnaces.

This product comes with a safety switch for shutting down the air conditioner in case of possible tank overflow. It’s wall-mounted and can also be placed on a flat surface, and there’s a 6ft power cord for easy reach to the nearest switchboard.

It features a 1/2-gallon tank and stainless steel motor shaft that can pump 80 GPH, a flow capacity that’s ideal for heavy-duty applications.

Best for quiet operation

Sauermann Si-30 Mini Condensate Removal Pump

Sauermann Si-30 Mini Condensate Removal Pump

  • Max Lift: 33 feet
  • Flow Rate: 5 GPH
  • Sound Level: 20 dB

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The Sauermann Si-30 Mini Condensate Removal Pump features an ultra-lightweight design that makes it suitable for use in tight areas. It’s a specialized mini pump ideal for removing condensate from air conditioner units up to 5.6 tons.

This pump is reinforced with Piston Technology to make it ideal for removing small particles with the condensate from air conditioning systems. It operates on a low sound level (20 Dba) to ensure its quiet operation in any part of the house.

This pump requires 220v to run and is excellent for air conditioning units up to 20 kW. It comes with a drain tubing and flow switch that allows you to prevent overflow. The mini condensate removal pump is coated with an anti-siphon to ensure its longevity, and it’s only wall-mounted.


Diversitech CP-22T Condensate Pump

Diversitech CP-22T Condensate Pump

  • Max Lift: 22 feet
  • Flow Rate: 1.6 GPM
  • Weight: 6.14 lbs.

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The Diversitech CP22 Condensate Pump is built from sturdy materials (heavy-duty plastic and stainless steel) to ensure durability. The pump features a lift of 22ft which makes it capable of taking care of the problems of condensate drain out at your home.

It’s equipped with vibration-dampening feet that bring down its operational noise to a bearable level.

The equipment is also built with four versatile inlet holes to allow multiple appliances to connect to the pump. It is reinforced with many safety features, including the unit’s visual indicator system to notify you of potential overflow and a simple float switch to prevent overflow.

Its metal hang tabs and ¼” quick terminals make the pump easy to install. There’s also a check valve for quick maintenance of the pump.


ECO-FLO CDSP Condensate Utility Pump

ECO-FLO CDSP Condensate Utility Pump

  • Outlet: 3/8-inch
  • Intake hole: 3 nos.
  • Weight: 5.43 lbs.

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The ECO-FLO CDSP Condensate Utility Pump is suitable for the effective removal of condensate from various appliances and equipment. It comes with a reliable safety switch that automatically shutdowns down the equipment each time you experience a power failure.

The pump is designed to feature three intake holes to allow for multiple connections of appliances, including furnaces, air conditioners, and dehumidifiers to the pump. It’s equipped with a removable built-in check valve that’s replaceable to facilitate quick equipment maintenance.

It features a user manual that you can download under the technical specification section on the product’s website. The user manual entails detailed information on the product’s safety, installation, troubleshooting, and warranty.

The CDSP-20 condensate pump can be mounted on the wall or placed on the floor. You can also utilize this utility pump to drain excess water from surfaces.


Mars 21780 Condensate Pump

Mars 21780 Condensate Pump

  • Max Lift: 24ft
  • Flow Rate: 125 GPH
  • Weight: 5.55 lbs.

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The Mars 21780 Condensate Pump features robust construction that makes it withstand regular use. The pump is designed to feature a dip-proof housing design to facilitate the circulation of cool air to keep you comfortable at all times. Its motor is reinforced with sealed ball bearings to ensure its quiet operation.

This condensate pump boasts a 1/2-gallon water tank that can help drain up to 125 GPH. It’s equipped with an in-built 250v safety switch that you can wire directly to a high-level alarm system or for direct equipment shutdown to ensure peace of mind during usage.

It also features a quick-release silicone check valve to allow quick and efficient maintenance without removing the condensate lines.

Mini Split Condensate Pump Buyers’ Guide – Things to Consider

We quite understand that numerous condensate pumps are available today in the market with similar features and specifications. As a result, you might be overwhelmed, not knowing which one to choose for your needs. So, how do you know which condensate pump is ideal for your home’s cooling and heating requirements? We’ve helped you highlight the most important factors to consider before buying a condensate pump. These factors include:

Pump Capacity and Discharge Rate

Choosing a micro split condensate pump requires careful consideration of the pump’s capacity and discharge rate. The capacity of the pump is measured in terms of the amount of condensate it can move in a given amount of time. It is crucial to match the pump’s capacity with the mini-split system’s condensate production. If the pump isn’t powerful enough, the condensate will overflow, and your system could be damaged.

The rate at which the condensate can be pumped out is called the discharge rate. Drainage is optimized and buildup, which could compromise the system’s performance, is avoided with a higher discharge rate. If you want your system to function at its best, pick a pump whose output matches the volume of condensate it generates.

The size of your system, the cooling load, and the weather in your area are all things to think about when settling on the right capacity and discharge rate for your mini split condensate pump. If you need advice tailored to your unique needs, an HVAC expert can be of great assistance.

Noise Level and Vibration

Mini-split systems are commonly installed in homes and businesses, where noise levels may be an issue. Therefore, picking a condensate pump with a low noise level and minimum vibration is essential for keeping things nice and quiet.

Modern condensate pumps are designed to operate quietly, ensuring that they don’t disrupt your daily activities or cause any annoyance. Look for pumps that feature noise-dampening technologies and anti-vibration measures to minimize any disturbances.

Comparisons of noise levels and vibration characteristics among available pumps should be made using information from product specifications, user evaluations, and manufacturer data. Getting a pump that runs quietly will improve your overall happiness with the setup.


The voltage or power required to operate a condensate pump is another important factor to consider before you make your purchase. Universal voltage condensate pumps require a line-voltage power of 115v or less to run, which is within the standard household current range. However, some condensate pumps for industrial and commercial use may require higher voltage for operation. In such cases, it’s best to go for units with power-saving features to bring down the bill from the power company.

Float Switch

The float switch helps prevent potential overflowing. This feature ensures your condensate pumps drain safely. Condensate pumps (both mini split indoor units and outdoor units) with a good quality float switch can sense the condensation water level when it rises or falls to a specific point in the tank. The float switch then ‘commands’ the unit to start or stop the drainage process. It’s important to choose a pump with a good quality float to ensure your mini-splits correct operation and the long-term use of the unit.

Safety Switch

You don’t want to choose a pump that’s not safe enough for use. A condensate with a safety switch would automatically shut down in case of a power failure or pump malfunction. This helps ensure both your safety and that of the equipment. In this case, it’s important to ensure the integrated detection unit you intend to buy comes with a safety switch for your absolute peace of mind.

Mount System

Depending on your choice, you can opt for wall-mounted air conditioning units or units that you can place on the floor. However, some specialized condensate pump designs offer a dual installation option if you’re not sure yet of what you want. Regardless of the placement type you choose, it’s best to ensure that all the related kits are supplied for proper installation. Other placement options available include ceiling cassette units, concealed duct units, and LG Art cool units.

Tank Size

Most condensate pumps are equipped with a ½-gallon tank. While this tank capacity is good enough for residential use, it may be too small to handle heavy-duty operations. In such cases, you’ll need a bigger tank size with bigger appliances for effective heavy-duty operation. Therefore, it’s best to first find out about the tank size that’ll suit your requirement before you decided on a unit to buy through the product’s company service tech or customer service.

Mini Split Condensate Pump Not Working

best mini split condensate pumpCondensate overflow or decreased efficiency are just two of the problems that could arise if your micro split’s condensate pump isn’t functioning properly. The following are some often-encountered issues, along with potential answers:

a) Check Power Supply: Ensure that the pump is receiving power. Check the electrical connection, including the power cord and any switches or breakers associated with the pump. If necessary, reset the circuit breaker or replace any blown fuses.

b) Clear Clogs or Blockages: Condensate drain lines or the pump itself can become clogged over time. Inspect the drain lines for any debris, such as dirt or algae buildup. Use a pipe cleaner or a small brush to remove obstructions. If the pump has a removable reservoir, clean it thoroughly.

c) Verify Float Switch Functionality: Many mini split condensate pumps have a float switch that activates the pump when the condensate level rises. Check if the float switch is stuck or damaged. Gently manipulate the switch to ensure it moves freely. Replace the float switch if necessary.

d) Test Pump Motor: The pump’s motor could be broken if it won’t turn on at all. Listen carefully and look for signs of wear and tear. The motor may need to be repaired or replaced by an expert if it is not functioning properly.


Does a professional need to install a condensate pump for my ductless system?

Yes! Installing a condensate pump is highly technical and requires the services of a professional for proper settings to ensure the equipment works perfectly. However, if you have high technical skills and know-how to follow the user manual for installation properly, there’s nothing wrong with trying to install your condensate pump on your own. 

How big of a condensate pump do I need?

This entirely depends on your home’s cooling and heating requirements. However, most residential condensate pumps require between 1/30hp and 1/50hp. A condensate pump featuring up to 1/3hp and larger tank size is suitable for light commercial and industrial use.

What are the basic components of a ductless condensate pump?

Generally, a ductless condensate pump features two main components: an outdoor unit and an indoor unit. However, there’s also a condensate drain – the component that links the outdoor unit to the indoor unit) and a conduit enclosing the power cable, refrigerant tubing, and suction tubing.


Indeed, you need not look further than this review for the best mini-split condensate pumps that can be found on the market right now. We’ve done the legwork for you by helping you find the best six condensate removal pumps. It’s now time for you to choose the model that best suits your needs and preferences from our list.

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