How to Replace Your Hayward Super Pump or Pentair SuperFlo (Without Cutting All Your Pipes)

A step-by-step guide to pool pump replacement — including which pump to buy, how to handle the plumbing, and why your next pump should be better than the one you're pulling out.

Introduction

If your Hayward Super Pump is making a grinding noise, or your Pentair SuperFlo is leaking where the shaft meets the seal plate, you already know what's coming: pool pump replacement. It's one of the most common equipment jobs homeowners face, and the good news is that you don't have to rip out half your plumbing to get it done.

This guide walks you through the full pool pump replacement process — from shutting off power safely to connecting a new pump without major pipe cuts. We'll also show you which pumps are available right now on PoolPartsToGo, including variable speed options that will save you money every month going forward.

Before You Start: What You Need to Know

Pool pump replacement is a DIY-friendly job if you're comfortable with basic plumbing and electrical work. Here's what to have ready before you touch anything:

• Your existing pump's model number and horsepower (on the label or motor nameplate)

• Pipe diameter at the suction and discharge ports (typically 1.5" or 2")

• Whether your system is wired for 115V or 230V

• A pipe cutter or hacksaw, union wrenches, Teflon tape, and PVC primer/cement

• A 30-minute time window to let PVC cement cure before running the pump

 

Step-by-Step: How to Replace Your Pool Pump

Step 1 — Shut Off Power at the Breaker

Never work on pool equipment with the power on. Go to your circuit breaker and flip the breaker for the pool pump to the OFF position. Use a non-contact voltage tester at the pump's conduit to confirm power is dead before proceeding.

Step 2 — Relieve Pressure and Close Valves

Open the air relief valve on top of your filter until the pressure gauge reads zero. Then close the suction and return valves (if you have them) to minimize water loss when you break the unions.

Step 3 — Disconnect the Unions

Most pool plumbing uses threaded unions — the two collars connecting the pump to your pipe runs. Twist them counterclockwise by hand or with a union wrench. Some water will spill out; that's normal. If your system doesn't have unions and pipes go directly into the pump, you'll need to cut the pipe and install unions when you put the new pump in. Don't skip the unions this time — they make every future replacement much easier.

Step 4 — Disconnect the Wiring

Remove the wiring access cover on the back of the motor. Take a clear photo of the wiring connections before you touch anything — this will save you headaches when connecting the new pump. Note whether you see two load wires (black/red for 230V) or one load wire plus a neutral (115V). Remove wires from their terminals and unscrew the conduit collar.

Step 5 — Remove the Old Pump

With the unions and wiring disconnected, the pump lifts free. Some are bolted to a pad — remove those bolts and set the pump aside. Note the position of the old pump's base relative to your pipe ends. This is your reference for positioning the new pump.

Step 6 — Position the New Pump

Set the new pump in place alongside the old one before installing anything. If the footprint is different, adjust the base position to align the union ports with your existing pipe ends. The BLACK+DECKER variable speed pumps come with an adjustable base specifically designed to accommodate small footprint differences — typically eliminating the need to cut pipe.

Step 7 — Connect the Plumbing

Install the supplied unions onto the new pump's suction and discharge ports hand-tight, then snug them up with a wrench. If your old pipe ends don't reach the new pump's ports, use a short section of PVC and a coupling. Apply Teflon tape to threaded fittings and primer/cement to any glue joints. Allow cement to cure for at least 30 minutes before running the pump.

Step 8 — Wire the New Pump

Refer to your photo from Step 4 and the wiring diagram in the new pump's manual. Match wire colors to terminals — typically black and red to L1/L2 for 230V, or black to L1 and white to neutral for 115V. Green wire always goes to the ground terminal. Reinstall the conduit collar and the wiring cover.

Step 9 — Prime and Start

Remove the pump lid, fill the basket housing with water, and replace the lid hand-tight. Open your valves, then go to the breaker and restore power. The pump should prime within 60–90 seconds. Check all union connections and the lid o-ring for leaks. If the pump runs dry for more than 2 minutes without priming, shut it off and repeat the priming process.

 

Which Pump Should You Buy? Our Recommendations

If you're doing a pool pump replacement anyway, now is the right time to upgrade to a variable speed pump. They run quieter, last longer, and can cut your pool energy costs by up to 80% compared to the single-speed pump you're pulling out. Here's what we carry at PoolPartsToGo:

PoolPartsToGo Recommended Pumps

Comparison: Major Brand Options

These pumps are well-regarded by pool professionals, but they carry higher price tags and are best suited to pools already running brand-specific automation systems.

Quick Comparison: Pump Options at a Glance

 

How to Choose the Right Replacement Pump

Not sure which pump fits your situation? Run through these questions:

1. What's your pool volume?

• Pools under 15,000 gallons: 1–1.5 HP is typically sufficient.
• Pools from 15,000–25,000 gallons: 1.5–2 HP.
• Pools over 25,000 gallons or with water features: 2–3 HP. When in doubt, match or slightly exceed the horsepower of the pump you're replacing.

2. Inground or above ground?

This matters for voltage, port sizing, and pump design. Above-ground systems typically run 115V and use smaller pipe connections. Inground systems are usually 230V with 2" ports. The BLACK+DECKER line has purpose-built models for each.

3. Do you have existing pool automation?

If you're running Hayward or Pentair automation controllers, check compatibility before ordering. The BLACK+DECKER variable speed pumps support relay-triggered automation control via a separately available adapter — compatible with Hayward Goldline Pro Logic, Pentair EasyTouch, Jandy AquaLink RS, and Intermatic systems.

4. Are unions already installed?

If yes, a pump with the same port size will drop right in without any pipe cutting. If not, budget for union installation when you do this job — it's an extra 30 minutes now that will save hours on every future repair.

 

Frequently Asked Questions

Can I replace a Hayward Super Pump with a different brand?

Yes. Most inground pool pumps share standard 2" port sizing and bolt patterns that make cross-brand replacement straightforward. Adjustable-base models like the BLACK+DECKER variable speed pumps are specifically designed to drop into the footprint left by common Hayward and Pentair pumps without cutting pipe.

Do I need an electrician to replace a pool pump?

In most states, homeowners can perform their own pool pump wiring, but local codes vary. If you're not comfortable with 230V wiring, hiring a licensed electrician for the wiring portion while you handle the plumbing is a reasonable split. Always confirm power is off at the breaker and test with a voltage tester before touching any wires.

How long does pool pump replacement take?

Most homeowners complete a pump replacement in 2–4 hours on the first attempt, including time to let PVC cement cure. If your unions are already in place and the new pump is a close footprint match, you can do it in under 2 hours.

Will a variable speed pump work with my existing filter?

Yes, with rare exceptions. Variable speed pumps work with all standard pool filter types — sand, cartridge, and DE. Just make sure your pump HP is appropriate for your filter's flow rate rating. Running a 3 HP pump against a filter rated for 60 GPM will cause problems regardless of brand.

What's the best pool pump replacement for a Hayward Super Pump?

For a direct drop-in replacement with an upgrade in efficiency, the BLACK+DECKER 1.5 HP or 2 HP Variable Speed Inground Pool Pump (available on PoolPartsToGo) is the most popular choice among DIY pool owners. It matches standard inground footprints, includes unions, and carries a 5-year warranty — longer than most major brands offer.

Ready to Replace Your Pool Pump?

Pool pump replacement doesn't have to be a weekend project or a call to the pool guy. With the right pump and the right prep, most homeowners finish the job in an afternoon. The hardest part is usually the decision — and we've made that easier.

Browse the full selection of replacement pumps at PoolPartsToGo, or reach out to our US-based support team if you want help matching a pump to your specific setup. We stock pumps that ship free, with warranty support to back them up.