E550 Swim Spa

E-Series Swim Spas by Endless Pools

The E550 is the wider 15-foot E-Series swim spa from Endless Pools, the swim-spa specialist brand within the Watkins Wellness family. Built around Hydrodrive™ adjustable swim-current technology with a 94-inch beam (5 inches wider than the E500) and a standing-room-only layout with no fixed seating, the E550 is positioned by Endless Pools as "VIP Lane" and "built for action!", engineered for vigorous workouts with no compromises on functionality. Hydrodrive™ delivers up to 116 adjustable pace settings with a max pace of 1:08 per 100 yards (1:11 per 100 meters) and a "smooth, adjustable current for fun, all-level fitness and uninterrupted swims." Two configurations are offered: standard swim, or swim with the optional Underwater Treadmill for low-impact walking and running workouts. The E550 is sold and serviced through Seven Seas Pools & Spas.

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Features At A Glance

Electrical

230 V / 60 amp / 60 Hz (GFCI sub-panel included)

Footprint

15' × 94" × 58" tall (457 × 239 × 147 cm)

Jets

23 hydromassage jets for standing recovery

Water Care

UVC + CD Ozone dual-layer protection

E550 Swim Spa Details

Swim Pump: 2.5 HP Hydrodrive™ current system
Heater: 4,000 W / 230 V
Electrical: 230 V / 60 amp / 60 Hz (GFCI sub-panel included)
Water Care: UVC + CD Ozone dual-layer protection
Layout: Standing-room-only, no fixed seating
Lighting: 24 multicolor LED lights and LED illumination bar
Frame: 14-gauge (2 mm) galvanized steel frame with ABS base pan
Optional Configuration: Underwater Treadmill installed in the swim zone

Who the E550 Is Built For

The E550 fits households that want a wider workout-focused E-Series swim spa, same 15-foot length as the E500 but 5 inches wider (94" vs 89") with a standing-room-only layout that drops fixed seating in favor of maximum workout space. The E550 fits if you use the spa primarily for vigorous workouts (water aerobics, cross-training, swim drills, treadmill walking) rather than relaxed soaking. The 94-inch beam supports wider swim strokes and broader workout movement; the absence of fixed seating means the entire footprint is usable workout space. Hydrodrive™ Technology with 116 pace settings and a 1:08 race-pace ceiling is the same lap-swim machine the rest of the E-Series uses.

It is not the right swim spa for households who:

Want a hydromassage-focused soak experience with multiple seats, see the E500 (3 seats, 27 jets), E700 (17 feet, 3 seats), or any R-Series spa
Need a longer swim zone, see the E700 (17 feet)
Need separate swim and spa zones at different temperatures, see the dual-temperature E2000 or X2000
Want a recreation-focused swim spa at a more accessible price tier, see the R-Series (RecSport®) or X-Series (SwimCross®)
Prefer a hot-tub-only experience without swim function, Seven Seas carries Caldera Spas and Hot Spring Spas for traditional hot tub installations

Want the E550 swim spa experience?

Explore the E550 with Seven Seas Pools & Spas and compare the Hydrodrive™ current, workout layout, and optional Underwater Treadmill in person.

Specifications

Spa Specification	Value
Length × Width × Height	15' × 94" × 58" (457 × 239 × 147 cm)
Swim Depth	48" (122 cm)
Layout	Standing-room-only, no fixed seating

The E550 uses Endless Pools' Hydrodrive™ Technology, the company's signature adjustable swim current. The current is smooth and adjustable, tuned for all-level fitness and uninterrupted swims.

The 116-step adjustability lets a beginner swimmer set a slow drift current and a competitive swimmer crank up to a 1:08-per-100 race-pace effort, all within the same spa.

Swim Current Specification	Value
System	Hydrodrive™ Technology
Adjustable pace settings	116
Maximum pace	1:08 per 100 yards (1:11 per 100 meters)
Current character	Smooth, adjustable, turbulence-free
Swim pump	2.5 HP

The E550's jet configuration is intentionally different from the seat-focused E500 and E700: jets are positioned for standing hydromassage and post-workout muscle recovery rather than seated soak. The whole spa is built for action, the jet layout reinforces the workout-first design.

Hydrotherapy Specification	Value
Total Jets	23
Layout	Standing-jet configuration, no fixed seating to maximize workout space

The E550 ships with UVC + CD Ozone Dual-layer protection as standard sanitization, UV-C light sterilization paired with corona-discharge ozone, both targeting waterborne contaminants without dosing the spa with manual chlorine for daily upkeep.

Water Care Specification	Value
Standard system	UVC + CD Ozone (Dual-layer protection)
APSP 14 compliance	Yes
CEC compliance	Yes

Electrical Specification	Value
Heater output	4,000 W
Heater voltage	230 V
Standard electrical service	230 V / 60 amp / 60 Hz
GFCI sub-panel	Included with the spa

Lighting Specification	Value
Interior LED count	24 multicolor LED
Exterior LED bar	Included

The 14-gauge (2 mm) galvanized steel frame with ABS base pan is the structural backbone, meaningfully different from the wood-framed R-Series. The galvanized steel frame is positioned for premium long-term durability against moisture and weight cycling.

Construction Specification	Value
Shell material	Molded Acrylic
Frame	14-Gauge (2 mm) Galvanized Steel with ABS Base Pan
Cabinet descriptor	Durable, all-season
Shell color options	Alpine White, Ice Gray
Cabinet color options	Mocha, Gray

Variants and Configuration Options

The E550 is offered in two configurations, same shell, same Hydrodrive™ swim current, same jet count, with the difference being whether the Underwater Treadmill is installed in the swim zone.

E550 Swim (Standard Configuration)

The base E550. Standing-room-only layout, 23 jets, the Hydrodrive™ adjustable swim current with 116 pace settings, and an open swim/workout zone. This is the right configuration if you're focused on vigorous workouts, water-aerobic exercise, and freestyle swim drills.

E550 Swim + Underwater Treadmill (Optional Configuration)

The same E550 with the Underwater Treadmill installed in the swim zone, exclusive technology for low-impact workouts. You walk or run on a submerged belt while the swim current adjusts to match pace. The treadmill adds approximately 121 pounds of dry weight and slightly displaces water capacity (2,360 vs 2,391 gallons). Functionally, the spa still supports swim and workout movement when the treadmill is not in use; the treadmill is a dual-purpose addition rather than a replacement of swim function.

Configuration Side-by-Side

Swim (Standard)

Water capacity
2,391 gallons (9,051 L)
Dry weight
3,583 lbs (1,625 kg)
Filled weight
25,243 lbs (11,450 kg)
Underwater Treadmill
Not included
Swim current
Hydrodrive™ Technology, 116 pace settings
Layout
Standing-room-only, 23 jets
Best for
Vigorous workouts, water-aerobics, freestyle swim

Swim + Treadmill (Optional)

Water capacity
2,360 gallons (8,934 L)
Dry weight
3,704 lbs (1,680 kg)
Filled weight
25,111 lbs (11,390 kg)
Underwater Treadmill
Included, installed in swim zone
Swim current
Same
Layout
Standing-room-only, 23 jets
Best for
Walking and running workouts plus all of the above

Seven Seas walks every E550 buyer through the configuration choice during the showroom appointment, visit a Seven Seas showroom to see the swim current and the optional treadmill in person before deciding.

See if the E550 fits your space

Review the footprint, Hydrodrive™ current, optional treadmill, and delivery requirements with a Seven Seas advisor.

The E550 Swim Spa Experience

Sessions in the E550 follow a workout-first rhythm: swim (current on, treadmill off, swimming laps or doing freestyle drills against the adjustable Hydrodrive™ current at one of 116 pace settings); workout (current on, treadmill engaged on the optional configuration, walking or jogging the underwater belt; or current off and the standing-room layout used for water aerobics, cross-training drills, or aquatic strength work); and recover (using the standing hydromassage jets for post-workout muscle recovery, there are no fixed seats, so recovery is upright). The E550 is the workout-first entry in the E-Series.

Because the E550 is a single-tank spa (the entire ~2,390-gallon volume runs at one temperature), if you want their swim zone cooler than a soak temperature should evaluate the E2000 dual-temperature option.

Related Swim Spas in the E-Series

Related Spa	Length	Width	Notable	Configuration Options
E500	15'	89"	Most compact E-Series, 3 hydromassage seats	Swim / Swim + Treadmill
E550 (this model)	15'	94"	Wider, standing-room workout focus, no fixed seating	Swim / Swim + Treadmill
E700	17'	89"	Longer swim zone, balanced fitness + relaxation	Swim / Swim + Treadmill
E2000	20'	89"	Dual-temperature: 5' spa zone + 15' swim zone, separate temps	Single-zone, dual-temperature

How the E550 Compares to Other Endless Pools Series

Endless Pools structures its lineup around three series, each tuned to a different swimming style.

E-Series, Hydrodrive™ Technology, premium adjustable current with race-pace ceiling (1:08 per 100 yards). The E550 lives here. 14-gauge galvanized steel frame. Models: E500, E550, E700, E2000 (dual-temperature). Best for serious lap swimmers and workout-first households.

View E-series Swim Spas

R-Series, RecSport®, recreation- and family-focused. Smaller pumps, wood frame with thermoformed ABS base pan, simpler current system. Models: R200, R220, R500. Best for recreational swim, kids' play, and lighter exercise.

View R-series Swim Spas

X-Series, SwimCross®, cross-training-focused. Twin 2.5 HP pump architecture. Models: X500, X2000 (dual-temperature). Best for if you want a cross-trainer current emphasizing aerobic workouts.

View X-series Swim Spas

If you're cross-shopping the traditional hot tub category instead of swim spas, Seven Seas also carries Caldera Spas and Hot Spring Spas lineups.

Ready for a private E550 wet test?

The E550 is part of the lineup carried by Seven Seas Pools & Spas. Call ahead or stop by your local location to confirm current showroom availability and to book a private wet-test soak appointment, visiting a showroom is the fastest way to feel the Hydrodrive™ current at multiple pace settings, evaluate the standing-room workout layout, see the wider 94-inch beam in person, and (where the optional treadmill is on display) walk the underwater belt. Seven Seas advisors can also walk through site-prep, electrical-coordination, and delivery logistics during the same visit.

Installation and Delivery

The E550 requires a 230 V / 60 amp / 60 Hz circuit wired to a GFCI sub-panel, the sub-panel ships with the spa.

Site requirements:

Level reinforced concrete pad rated for 25,243 lbs filled (slightly less with the treadmill option), or a deck engineered for the same load
Service clearance on at least one side for equipment access
15-foot minimum length and 94-inch beam clearance for the spa shell, plus delivery / craning clearance, the E550 is 5 inches wider than the E500/E700, a meaningful detail for tight delivery paths

Seven Seas Pools & Spas coordinates the full delivery and installation flow: site assessment, electrical coordination with a licensed electrician, delivery scheduling, GFCI sub-panel mounting, post-fill water balancing, and a hands-on walkthrough of the Hydrodrive™ controls. The E550's wider beam and 25,243-lb filled weight make site-prep clearance verification a priority, Seven Seas' delivery team confirms path and pad before the build slot.

Water Care and Ongoing Maintenance

The UVC + CD Ozone Dual-layer sanitization keeps weekly water-care simple. UV-C light handles waterborne bacteria as water passes through the system; corona-discharge ozone provides a secondary oxidation layer. The system is APSP 14 compliant and CEC certified for energy efficiency.

Filter cleaning runs on a monthly cadence, see the swim spa filter care guide in the owners area. With the standing-room-only layout positioned for vigorous workouts, owners who use the spa intensively should expect more frequent water-care cycles. Seven Seas walks every owner through the schedule during the post-delivery handoff.

Frequently Asked Questions

The E550's 94-inch (239 cm) beam is 5 inches wider than the 89-inch beam used by the E500, E700, E2000, and X-Series spas. The wider beam supports broader stroke mechanics, wider workout movement, and the standing-room-only layout. Buyers comparing the E500 and E550 should verify their site's delivery path and pad will accommodate the wider beam.

By design, the E550 is standing-room-only to maximize workout space. The spa is built for action, with no fixed seating, freeing the entire footprint for vigorous workouts. The 23 jets are configured for standing hydromassage and post-workout muscle recovery rather than seated soak. If you want seated hydromassage should look at the E500 (3 seats) or E700 (3 seats) instead.

This is a configuration choice made at order. The treadmill installs in the swim zone during manufacturing. Ask your Seven Seas advisor about adding the treadmill to your order before delivery; field-retrofit options vary and a Seven Seas advisor can walk through current possibilities.

The Hydrodrive™ Technology system is rated for a maximum pace of 1:08 per 100 yards (1:11 per 100 meters), with 116 adjustable pace settings between zero and the maximum. That's competitive lap pace, slow enough for a beginner, fast enough for a serious swimmer.

Both are 15-foot E-Series spas with the same Hydrodrive™ swim current, same 48-inch swim depth, same UVC + CD Ozone water care, and same 230 V / 60 amp service. The E500 is 89 inches wide with 3 contoured hydromassage seats and 27 jets, positioned for if you want swim and seated hydromassage. The E550 is 94 inches wide with no fixed seating and 23 jets in a standing-room-only layout, positioned for vigorous workouts. Visit a Seven Seas showroom to compare side-by-side.

The E550's standard electrical service is 230 V / 60 amp / 60 Hz. The spa includes a GFCI sub-panel.

Endless Pools does not publish a single warranty page on the E550 product page. Seven Seas walks every E550 buyer through the current Endless Pools warranty document at the time of sale, the structure typically includes a multi-year shell warranty plus shorter terms on components and labor. Ask for the latest warranty PDF when you visit a showroom.

Yes. The 4,000 W / 230 V heater is sized for year-round operation in U.S. climates. The 14-gauge galvanized steel frame and durable all-season cabinet are engineered for outdoor installation. Ask a Seven Seas advisor for an operating-cost estimate based on your climate zone.

Standard E550 delivery from Seven Seas runs 6-12 weeks from order, depending on current Endless Pools production lead times, configuration (swim vs swim+treadmill), and the cabinet color combination. Inventory in stock at Seven Seas locations can ship faster.

Yes, with proper ventilation and drainage. Indoor swim-spa installations require an electrician-approved 230 V / 60 amp feed, a moisture-resistant floor structure rated for 25,243+ lbs filled, active humidity ventilation (swim spas evaporate more water than hot tubs), and code-compliant drainage. The E550's 94-inch beam may also affect indoor doorway/clearance feasibility, verify with a Seven Seas advisor. See the swim-spa indoor installation guide for full requirements.

Where to See the E550 in Person

Find your Nearest Showroom

Menu

Ask for pricing

Features At A Glance

Electrical

Footprint

Jets

Water Care

Who the E550 Is Built For

It is not the right swim spa for households who:

Physical Dimensions and Footprint

Swim Current System, Hydrodrive™ Technology

Hydromassage and Jet System

Water Care System

Heater and Electrical

Lighting and Water Features

Cabinet and Construction

E550 Swim (Standard Configuration)

E550 Swim + Underwater Treadmill (Optional Configuration)

Swim (Standard)

Swim + Treadmill (Optional)

See if the E550 fits your space

Why Is the E550 Wider than the E500 and E700?

Why Doesn't the E550 Have Fixed Hydromassage Seats?

Can I Add the Underwater Treadmill After Purchase?

What Is the Maximum Swim Pace I Can Set?

What's the Difference Between the E500 and the E550?

What Electrical Service Does the E550 Need?

What's the Warranty?

Can I Swim Year-Round?

How Long Does Delivery Take?

Can the E550 Be Installed Indoors?

Where to See the E550 in Person

Series

Brand

Parent

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