E500 Swim Spa

E-Series Swim Spas by Endless Pools

The E500 is the most compact swim spa in the E-Series from Endless Pools, the swim-spa specialist brand within the Watkins Wellness family. Measuring 15 feet long with a 48-inch swim depth, the E500 pairs the Hydrodrive™ adjustable swim current (31 pace settings, max pace 1:08 per 100 yards) with three contoured hydromassage seats and 27 jets, a single-tank swim spa that handles swim, workout, and recovery in one footprint, and the smallest E-Series shell that still carries the full Hydrodrive™ adjustable current. Two configurations are offered: standard swim, or swim with the optional Underwater Treadmill for low-impact walking and running workouts. Seven Seas Pools & Spas carries the full E-Series lineup, call ahead or stop by your local showroom to confirm what's currently on display, book a private soak appointment to feel the current in person.

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View E-Series Swim Spas

Features At A Glance

Electrical

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

Footprint

15' × 89" × 58" tall (457 × 226 × 147 cm)

Jets

27 hydromassage jets for post-swim recovery

Water Care

UVC + CD Ozone dual-layer protection

E500 Swim Spa Details

Swim Pump: 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
Filtration: 200 sq. ft.
Lighting: 18 multicolor LED lights, LED illumination bar, and 2 illuminated water features
Frame: 14-gauge galvanized steel frame with ABS base pan
Optional Configuration: Underwater Treadmill installed in the swim zone

Who the E500 Is Built For

The E500 fits households that want a single-tank swim spa with a serious adjustable current but without committing to the larger 17-foot E700 or the dual-temperature 20-foot E2000. It's the most compact swim spa in the lineup that still carries the full Hydrodrive™ adjustable current, the same swim machine the bigger E-Series spas use, just in a 15-foot package that fits more backyards. The 48-inch swim depth supports proper swim form (most lap swimmers want at least 42-48 inches to avoid stroking the bottom). The three hydromassage seats handle post-workout recovery for a small family. The optional Underwater Treadmill turns the same spa into a low-impact cardio machine if you're focused on walking workouts, joint-friendly running, or rehab.

It is not the right swim spa for households who:

Need separate swim and spa zones at different temperatures, see the dual-temperature E2000 or the X2000 for a different drivetrain
Want a longer swim zone, the E700 adds 2 feet (17' total)
Need wider swim coverage, the E550 is the same 15' length with a wider 94" beam
Want a recreation- or training-focused swim spa at a different 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 E500 swim spa experience?

Explore the E500 with Seven Seas Pools & Spas and compare the Hydrodrive™ current, hydromassage seats, and optional Underwater Treadmill in person.

Specifications

Spa Specification	Value
Length × Width × Height	15' × 89" × 58" (457 × 226 × 147 cm)
Swim Depth	48" (122 cm)
Seating Capacity	3 adults (hydromassage seats)

Variant-specific water capacity and weight figures are documented in the Variants and Configuration Options section below.

The E500 uses Endless Pools' Hydrodrive™ Technology, the company's signature adjustable swim current. The current is smooth, adjustable, and turbulence-free, designed to hold swimmers in place for uninterrupted swims.

Swim Current Specification	Value
System	Hydrodrive™ Technology
Adjustable pace settings	31
Maximum pace	1:08 per 100 yards (1:11 per 100 meters)
Current character	Turbulence-free, holds swimmer in place
Swim pump	5 HP

The 31-step adjustability lets a beginner swimmer set a slow, glide-paced current and a competitive swimmer crank it up to a 1:08-per-100 race-pace effort, all in the same spa.

Hydrotherapy Specification	Value
Total Jets	27
Hydromassage Seats	3 contoured spa seats
Seat Design	Ergonomic, contoured for total-body relaxation

The hydromassage zone is the recovery side of the soak: swim, work out, and play, then unwind in the hydromassage seats with the jets engaged.

The E500 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
Filtration	200 sq. ft.

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

The 60-amp service supports the 5 HP swim pump plus the 4 kW heater plus the hydromassage jets running together.

Lighting Specification	Value
Interior LED count	18 multicolor LED
Exterior LED bar	Included
Illuminated water features	2

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

The 14-gauge galvanized steel frame is the structural backbone, positioned for premium long-term durability against moisture and weight cycling.

The base E500 includes three hydromassage seats, the Hydrodrive™ adjustable swim current, 27 jets, and an open swim zone for lap swimming, freestyle exercise, water-aerobic workouts, and family pool-style use.

The same E500 can be ordered with the Underwater Treadmill installed in the swim zone, adding a low-impact workout option for water walking, water running, joint-friendly rehab, and training rotation work.

Endless Pools does not publish a single warranty page on the E500 product page. Seven Seas walks every E500 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.

Variants and Configuration Options

The E500 is offered in two configurations, same shell, same swim current, same hydromassage seats, with the difference being whether the Underwater Treadmill is installed in the swim zone.

E500 Swim (Standard Configuration)

The base E500. Three hydromassage seats, the Hydrodrive™ adjustable swim current, 27 jets, and an open swim zone for lap swimming, freestyle exercise, and water-aerobic workouts. This is the right configuration if you're focused on swimming, freestyle exercise, and family pool-style use.

E500 Swim + Underwater Treadmill (Optional Configuration)

The same E500 with the Underwater Treadmill installed in the swim zone, a low-impact workout option for households managing joint or knee strain, or for athletes adding water-walking and water-running into a training rotation. You walk or run on a submerged belt while the swim current adjusts to match pace. The treadmill adds approximately 125 pounds of dry weight and slightly displaces water capacity (1,735 vs 1,770 gallons). Functionally, the spa still supports swim laps 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
1,770 gallons (6,700 L)
Dry weight
2,905 lbs (1,318 kg)
Filled weight
19,400 lbs (8,800 kg)
Underwater Treadmill
Not included
Swim current
Hydrodrive™ Technology, 31 pace settings
Hydromassage seats
3
Jet count
27
Best for
Swim laps, water-aerobic workouts, family use

Swim + Treadmill (Optional)

Water capacity
1,735 gallons (6,568 L)
Dry weight
3,030 lbs (1,374 kg)
Filled weight
19,235 lbs (8,725 kg)
Underwater Treadmill
Included, installed in swim zone
Swim current
Hydrodrive™ Technology, 31 pace settings
Hydromassage seats
3
Jet count
27
Best for
Walking and running workouts plus all of the above

Seven Seas walks every E500 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 E500 fits your space

Review the 15-foot footprint, Hydrodrive™ current, optional treadmill, and delivery requirements with a Seven Seas advisor.

The E500 Swim Spa Experience

Sessions in the E500 follow a three-zone rhythm: swim (current on, treadmill off, swimming laps or doing freestyle drills against the adjustable Hydrodrive™ current); workout (current on, treadmill engaged on the optional configuration, walking or jogging the underwater belt at matched pace); and recover (current off, hydromassage seats engaged, soaking in the contoured 3-seat zone with 27 jets across neck-to-feet coverage). Swim, work out, recover, all in the same shell.

Because the E500 is a single-tank spa (the entire 1,770-gallon volume runs at one temperature), if you want your swim zone cooler than a soak temperature should evaluate the E2000 dual-temperature option. That spa runs the swim zone at about 85°F and the spa zone at 104°F simultaneously through a divided tank.

Related Swim Spas in the E-Series

Related Spa	Length	Width	Notable	Configuration Options
E2000	20'	89"	Dual-temperature: 5' spa zone + 15' swim zone, separate temperatures	Single-zone, dual-temperature
E500 (this model)	15'	89"	Most compact E-Series with full Hydrodrive™ current	Swim / Swim + Treadmill
E550	15'	94"	Wider beam, standing-room workout focus	Swim / Swim + Treadmill
E700	17'	89"	Longer swim zone, balanced fitness + relaxation	Swim / Swim + Treadmill

How the E500 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 adjustable current. The E500 lives here. Best for serious lap swimmers and households that want adjustable pace control across a wide range of swim abilities.

View E-Series Swim Spas

R-Series, RecSport®, recreation- and sport-focused. Smaller footprint, wood frame with thermoformed ABS base pan, simpler current system. 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, generally similar footprint to E-Series. Best 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 the Caldera Spas and Hot Spring Spas lineups, both Watkins Wellness brands focused on hydrotherapy without the swim function. The team can walk you through swim-spa-vs-hot-tub at any showroom.

Ready for a private E500 wet test?

Installation and Delivery

The E500 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 19,400 lbs filled (or higher 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 for the spa shell, plus delivery / craning clearance

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. Swim spas are heavier and longer than hot tubs, most installations need a craning service or a clear straight-line delivery path. The Seven Seas team handles the logistics so the buyer doesn't have to.

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 for the 200 sq. ft. cartridge, see the swim spa filter care guide in the owners area. Endless Pools recommends a full drain-and-refill on the standard swim-spa cycle (typically every 3-6 months depending on use intensity); Seven Seas walks every owner through the schedule during the post-delivery handoff.

Frequently Asked Questions

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 31 adjustable pace settings between zero and the maximum. That's competitive lap pace, slow enough for a beginner, fast enough for a serious swimmer.

No, the E500's standard electrical service is 230 V / 60 amp. The 60-amp service is required to run the 5 HP swim pump plus the 4 kW heater plus the hydromassage jets concurrently. The R-Series (R200, R220, R500) starts at 230 V / 30 amp because it uses a smaller 2.5 HP pump.

Both are 15-foot E-Series spas with the same Hydrodrive™ swim current. The E550 is wider (94" vs 89"), with a different seat and standing-room layout positioned for vigorous workout movement. The E500 is the narrower, more lap-swim-focused configuration. Visit a Seven Seas showroom to compare side-by-side.

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.

The E2000 is a dual-temperature, dual-tank spa: a 5-foot spa zone at hot-tub temperature plus a 15-foot swim zone at swimming temperature, running simultaneously through the same 20-foot shell. The E500 is a single-tank spa at one temperature, simpler installation, lower volume, and a more compact footprint.

Yes. The E500 is sold and serviced through Seven Seas Pools & Spas. Call ahead or stop by your local location to see whether the E500 is currently on display and to book a private wet-test soak appointment, feel the Hydrodrive™ current, sit in the hydromassage seats, and walk the underwater belt where the optional treadmill is on display.

Standard E500 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 19,400+ lbs filled, active humidity ventilation, and code-compliant drainage. See the swim-spa indoor installation guide for full requirements.

Where to See the E500 in Person

The E500 is part of the lineup carried by Seven Seas Pools & Spas. Call ahead or stop by your local showroom to confirm current showroom availability. Visiting a showroom is the fastest way to feel the Hydrodrive™ current at multiple pace settings, sit in the hydromassage seats, see both the Alpine White and Ice Gray shell finishes in person, and (where on display) walk the optional Underwater Treadmill. Call or visit your local Seven Seas Pools & Spas location to schedule a private wet-test soak appointment with the models currently on the floor. Seven Seas advisors can also walk through site-prep, electrical-coordination, and delivery logistics during the same visit.

Find your Nearest Showroom

Menu

Ask for pricing

Features At A Glance

Electrical

Footprint

Jets

Water Care

Who the E500 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

E500 Swim Configuration

E500 Swim + Underwater Treadmill

Warranty

E500 Swim (Standard Configuration)

E500 Swim + Underwater Treadmill (Optional Configuration)

Swim (Standard)

Swim + Treadmill (Optional)

See if the E500 fits your space

Can I Add the Underwater Treadmill After Purchase?

What Is the Maximum Swim Pace I Can Set?

Can the E500 Run on 230 V / 30 amp Like the R-Series?

How Does the E500 Compare to the E550?

Can I Swim Year-Round?

What's the Difference Between the E500 and the E2000?

Can I See the E500 Filled at a Seven Seas Showroom?

What's the Warranty?

How Long Does Delivery Take?

Can the E500 Be Installed Indoors?

Where to See the E500 in Person

Series

Brand

Parent

Related Spas

Other Endless Pools Series

Categories

Cross-Brand Hot Tub Alternatives

Services

Owners Area

Clarion

Cranberry Township

DuBois

Hermitage

North Fayette

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