Hayward Super Pump VS 615 vs. 620: Which Variable Speed Pump Do You Need? (W3VSP26615 vs W3VSP26620)

Two model numbers, one pump body, and a price difference of about $150. That's the situation people run into when they start shopping the Hayward Super Pump VS 600 Series. The W3VSP26615 and the W3VSP26620 look nearly identical in photos, so it's fair to wonder what you're actually paying extra for.

Here's the short version, then the details.

What's the difference between the W3VSP26615 and the W3VSP26620?

The difference is horsepower. The W3VSP26615 is rated 1.65 total horsepower and the W3VSP26620 is rated 2.25 total horsepower. Everything else about the two pumps is essentially the same: same Super Pump VS housing, same OmniX smart control built in, same variable speed operation.

So you're not choosing between a basic model and a premium model. You're choosing a size. That's a much easier decision than most people expect.

Which Super Pump VS is right for my pool size?

Most standard residential pools with normal plumbing do fine on the W3VSP26615. The 2.25 THP W3VSP26620 makes sense when your system has to push harder than average.

Reasons to step up to the W3VSP26620:

• A larger pool, roughly 25,000 gallons and up
• Long pipe runs between the equipment pad and the pool
• An attached spa with jets that need real flow
• A raised waterfall, sheer descent, or other water feature
• A pressure-side cleaner line, solar panels on the roof, or an in-floor cleaning system
• 1.5 inch plumbing on a big pool, where the smaller pipe adds resistance

If none of those apply and you're replacing a single speed 1 HP or 1.5 HP pump on an average backyard pool, the W3VSP26615 is very likely all the pump you need. Buying more horsepower than your plumbing can use doesn't clean your water any better. It just costs more up front.

What does OmniX do on the Super Pump VS?

OmniX is Hayward's built-in smart control. It lets the pump connect to Hayward's app so you can set schedules, change speeds, and check on the pump from your phone instead of walking out to the keypad every time.

It also means the pump can talk to other Hayward equipment on the pad. If you already run a Hayward salt system or automation, that shared control is one of the better reasons to stay in the same family. Both the W3VSP26615 and the W3VSP26620 include OmniX, so this isn't a reason to pick one over the other.

Does the bigger pump cost more to run?

Not necessarily, and this trips people up. A variable speed pump only draws the power the speed you're running demands. If you run the W3VSP26620 at a low filtration speed most of the day, it's not burning 2.25 horsepower worth of electricity.

That said, an oversized pump on undersized plumbing still wastes energy fighting pipe resistance. The savings come from running slow for long hours, not from having extra horsepower sitting in reserve. Size the pump to the system, then let the variable speed do its job.

Will the Super Pump VS fit where my old pump sits?

The Super Pump VS keeps the familiar Super Pump footprint, so most people swapping out an older Hayward Super Pump find the plumbing lines up close to where it was. You may still need a couple of unions or a short piece of pipe to make it clean.

A few things worth checking before the pump shows up:

• Your voltage at the pad and how the pump is wired
• Whether your old timer or relay setup needs to change (variable speed pumps generally want constant power, not a mechanical timer cutting them off)
• Suction and return pipe size, 1.5 inch or 2 inch
• Room around the equipment pad for the taller motor and control head

If you're not sure how your current pump is wired, that's a good moment to have an electrician or a pool tech look before you buy.

W3VSP26615 vs W3VSP26620: which one should you buy?

Pick the W3VSP26615 for a standard pool with normal plumbing and no big water features. Pick the W3VSP26620 if you have a large pool, a spa, a waterfall, solar, or long pipe runs that need extra push.

The $150 gap between them is small compared to what a mismatched pump costs you in weak flow or wasted power. When it's genuinely a toss-up, most people are happier with the extra headroom of the W3VSP26620, since a variable speed pump can always be turned down but can't be turned up past what it's rated for.

Hayward | W3VSP26615 | Super Pump VS Variable Speed Pump with OmniX | 1.65 THP

$1699.00

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Hayward | W3VSP26620 | Super Pump VS Variable Speed Pump with OmniX | 2.25 THP

$1849.00

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