Choosing the right pool pump goes beyond merely considering the horsepower and price tag. It requires understanding the compatibility of different pumps, their speed varieties, and maximum flow rates with your pool type and existing filtration system.
This guide will inform you on all those fronts and more, saving you from risking money on an unsuitable pump or facing unexpected maintenance issues.
In addition, we have listed the 5 best pool pumps (energy-star verified) to make the decision easier for you.
How to choose the best pool pump for your pool?
- Pool type
Inground Pools: These pools generally require self-priming pumps due to their installation above the waterline. Self-priming pumps are designed to expel air from the system, allowing them to create the necessary suction to draw water up from the pool. This is essential because, when the pump is turned off, it can lose its prime, causing air to enter the system and hindering water flow. Without a self-priming feature, an inground pump may struggle to function properly after it has been restarted, which can lead to inefficiencies and damage to its parts.
Above-Ground Pools: In contrast, pumps for above-ground pools do not need to be self-priming because they are typically located at or below the water level. Gravity aids in the water flow, ensuring that the pump remains full of water, which minimizes the chances of air being trapped in the system. This simplifies the pump’s operation, making it easier to maintain and manage.
Additionally, if you own a saltwater pool, specifically look for those made of stainless steel or durable plastic materials and not copper. This to prevent corrosion and rusting in any part of the pump.
- Pool size and volume
You need to know the accurate size and volume of your pool to calculate the flow rate of your ideal pump. This will ensure that all of your pool’s water is cleaned atleast once per day.
- Step 1: Calculate Pool Volume
First, calculate your pool’s volume in gallons using the following formula:
Pool Volume = Length (ft) x Width (ft) x Average Depth (ft) x 7.5
This formula helps convert cubic feet into gallons, allowing for an accurate estimate of how much water your pool holds.
- Step 2: Determine Flow Rate per Hour
Once you know your pool’s volume, divide it by eight (standard turnover time). This gives you the required flow rate per hour, meaning how many gallons of water your pump needs to circulate in an hour to complete one full turnover of your pool’s water in eight hours.
Flow Rate per Hour = Pool Volume / 8 hours
For example, if your pool holds 40,000 gallons of water, the calculation is as follows:
60,000 gallons ÷ 8 hours = 7,500 gallons per hour
This means your pump must handle 7,500 gallons of water every hour to maintain efficient circulation.
- Step 3: Convert to Flow Rate per Minute
Next, convert this flow rate into gallons per minute (GPM), as this is the standard measurement on pool pump labels. To do this, divide the flow rate per hour by 60.
Flow Rate per Minute (GPM) = Flow Rate per Hour / 60 minutes
Using the previous example:
7,500 gallons per hour ÷ 60 minutes = 125 GPM
Now you have a figure to look for on your new pump’s label.
- Horsepower Rating
Pool pumps come in various sizes, aka horsepower ratings, typically ranging from 0.75 HP to 3 HP. It’s a common misconception that the higher the horsepower, the better the pump. However, this isn’t true. A pump that’s too powerful for your pool’s plumbing system can lead to:
- Increased energy costs: Larger pumps consume more electricity, raising operational expenses.
- Stress on your plumbing and filter: If the pump is too large, it can overwhelm the system, which can only handle a specific flow rate at a given time. This can cause unnecessary wear and tear on your pool equipment, shortening its lifespan.
To avoid this, once you have GPM calculated, the next thing to know is the Total dynamic head (TDH) – a measure of the resistance the pump must overcome to circulate water through the entire system.
TDH factors in pipe lengths, fittings, and angles that the water flows through. For in-ground pools, TDH is usually around 15 meters, while above-ground pools typically fall around 9 meters.
As resistance increases, the pump needs to work harder. Choosing a pump without understanding TDH can either result in poor circulation (if the pump is too weak) or excessive strain on your plumbing (if the pump is too powerful).
Simply put, if you are replacing an old pump, choose one with similar horsepower and specifications, especially if it worked well for your system.
For new pools, consult with a pool builder or a local pool supply store to get advice on the right pump size for your specific setup.
- Speed options
When selecting a pool pump, you’ll come across three speed types: single-speed, dual-speed, and variable-speed.
- Single-Speed Pumps: Run at one speed and are cheaper upfront but less energy-efficient, leading to higher long-term costs.
- Dual-Speed Pumps: Offer two speeds – high for demanding tasks and low for everyday filtration. They are more energy-efficient than single-speed pumps, but you’ll need a system to switch between speeds.
- Variable-Speed Pumps: The most energy-efficient, adjustable for different needs, and can save up to 80% on energy costs. They use a TEFC motor, preventing dust and moisture from entering, which prolongs the pump’s life. Although expensive upfront, the long-term savings are significant.
For long-term efficiency and cost savings, variable-speed pumps are ideal.
- Filter Size
Choosing a pool pump that’s too powerful for the pool filter can place strain on both the pump and the filter, leading to premature wear or even damage. Here’s why:
- Excess Pressure on the Filter: If the pump’s flow rate exceeds the filter’s capacity, the filter will be forced to handle more water than it’s designed for. This excess pressure can result in the filter becoming clogged more quickly, making it less efficient in removing debris. Over time, this leads to strain on the filter’s internal components, reducing its lifespan and effectiveness.
- Strain on the Pump: When the filter is overloaded and cannot properly handle the water flow, it creates back pressure in the system. This back pressure forces the pump to work harder to move water through the clogged or undersized filter. As a result, the pump motor is subject to increased wear and overheating, potentially shortening its lifespan.
To avoid this, ensure the pump’s flow rate does not exceed the filter’s capacity. For example, if your pool filter has a flow rate of 125 gallons per minute (GPM), the pump should not exceed 125 GPM.
- Energy efficiency
To save energy, choose ENERGY STAR-certified pumps. These pumps are designed to use more energy only when necessary, like for cleaning, and less for low-demand tasks such as filtration, resulting in lower electricity costs.
Additionally, look for pumps with timers or programmable settings. These allow you to schedule operation times, ensuring the pump runs only when needed. This feature optimizes energy use and reduces your overall electricity bill while keeping your pool water circulating efficiently.
- Noise-less operation
Single-speed pumps are typically noisy since they operate at a constant high speed. As these pumps age, internal parts like bearings may wear out and increase noise. In contrast, variable-speed pumps are much quieter, particularly when running at lower speeds. Although they can be louder at higher speeds, at low RPMs, they often operate so silently that you might not even realize they’re running.
Top Rated Pool Pump Brands in 2024
All of the below listed pool pumps are certified for their energy conserving technologies by competent regulatory authorities. So rest assured, with these options, if you are paying a higher upfront cost, you’ll be saving a lot more in the long run.
Cost: $1,299
Key Features:
- Energy Efficiency: The Pentair SuperFlo VS is designed for optimal energy savings, allowing users to save up to 80% in energy costs compared to traditional single-speed pool pumps.
- Material: Constructed from durable plastic, it offers excellent resistance to corrosion and is ideal for long-term use in various pool environments.
- Maximum Flow Rate: With a flow rate of 112 gallons per minute (GPM), this pump is well-suited for medium to large pools.
- Motor & Power: Powered by a quiet, fan-cooled motor, the pump runs efficiently on both 115V and 230V systems without requiring rewiring, making it adaptable for different electrical setups.
- Convenient Features: It includes a real-time clock and memory retention for easy, scheduled operation, simplifying pool maintenance.
Cost: $979.99
Key Features:
- Energy Efficiency: This pump is equipped with a certified variable-speed motor, designed to help cut energy consumption by up to 80%. It ensures savings on energy costs across different operation levels.
- Material: Made from durable plastic, providing protection against wear and tear, and built to handle everyday use.
- Maximum Flow Rate: Delivers a flow rate of 80 gallons per minute (GPM), which is ideal for moderate-sized pools.
- Power Source: It runs on a corded electric power supply and operates at 220 volts, providing a steady and reliable performance.
- User-Friendly: The easy-to-program touchpad allows for adjusting speed settings effortlessly. Additionally, the pump’s self-diagnostic feature helps maintain high performance over time.
- Built for Longevity: The pump’s enclosed motor offers protection in all seasons, ensuring it remains quiet and operates efficiently even in tough conditions.
Cost: $899
Key Features:
- Energy Efficiency: The MaxFlo XE delivers ultra-high efficiency, consuming significantly less energy than traditional variable-speed pumps, making it a smart upgrade for existing pool systems.
- Material: Crafted from durable plastic, it is designed for long-lasting use while withstanding harsh pool environments.
- Maximum Flow Rate: With a powerful flow rate of 240 gallons per minute (GPM), it’s perfect for larger pools requiring efficient water circulation.
- Motor & Power Source: Equipped with a strong 1.65 HP motor and dual-voltage capabilities (230/115V), this pump allows for versatile installation options.
- Quiet Operation: Allows you to enjoy a peaceful poolside environment thanks to its whisper-quiet design, offering quieter operation without compromising power.
- Customizable Speeds: The 6-speed programmable settings make pool management simple and efficient, allowing users to tailor the pump’s operation for optimal energy savings.
Cost: $749.99
Key Features:
- Energy Efficiency: The variable-speed motor adjusts based on pool needs, consuming less energy and reducing monthly utility costs compared to traditional single-speed pumps.
- Material: Constructed from stainless steel, providing resistance to corrosion and durability in harsh pool environments.
- Maximum Flow Rate: Delivers a flow rate of 121 gallons per minute (GPM), making it efficient for circulating pool water quickly.
- Motor & Power Source: Features a quiet, Totally Enclosed Fan Cooled (TEFC) motor for noise reduction and smooth operation. Operates on 240 volts.
- Convenient Features: Comes with a built-in filter basket and a digital control panel with a timer for easy programming. It also includes freeze protection, which automatically activates when temperatures approach freezing, helping prevent pipeline damage and prolonging the pump’s lifespan.
Cost: $1,325.00
Key Features:
- Energy Efficiency: Equipped with InverMAC Technology, the pump uses advanced inverter motor technology to optimize speed control and ensure significant energy savings during operation.
- Material: Constructed from durable plastic, making it resistant to corrosion and suitable for long-term use in salty pool environments.
- Maximum Flow Rate: Offers a flow rate of up to 118 gallons per minute (GPM), making it ideal for a wide range of pool sizes.
- DC Brushless Motor: The DC brushless motor operates quietly and ensures longevity, with lower operational noise and reduced wear over time compared to traditional motors.
- Programmable Timers: Comes with four daily timers, allowing flexible operation schedules that help reduce unnecessary energy consumption by matching the pump’s operation to pool usage.
- Energy Monitoring: Includes an active energy monitor so you can track energy consumption and maximize cost savings through more informed usage decisions.
- Flexible Operation: Runs efficiently from 30% to 100% capacity, ensuring optimal performance by adjusting to your pool’s specific needs while conserving energy when full power isn’t required.
Takeaways
Your pool pump should be tailored to your specific pool type and size, with a flow rate that matches your pool’s volume for efficient circulation. It should have the appropriate horsepower to prevent strain on both the pump and the filter while also considering the total dynamic head for plumbing resistance.
Look for energy-efficient models that are ENERGY STAR certified and offer programmable settings for optimal usage. Lastly, choose a pump known for quieter operation to enhance your pool experience.