Endless Pool Cost in 2026: Full Price Breakdown and Cheaper Alternatives

An endless pool costs $9,000 to $84,000 on average, with the bulk of projects landing between $20,000 and $40,000. The price depends on which of three install paths you take. A factory-built swim spa with a built-in current runs $20,000 to $60,000 installed. Building a small dedicated pool with a swim jet system can reach $40,000 to $80,000. Retrofitting a swim jet onto an existing pool is the lowest-cost path at $2,000 to $15,000 for the system plus install. This guide breaks down each option, what drives the cost, and where you can cut it.

How Much Does an Endless Pool Cost?

The average endless pool cost is around $31,500 in 2026, with a typical range of $9,000 to $84,000 depending on size, install type, and features (per Angi 2026 pool cost data). The price varies because “endless pool” covers three very different products at three very different price points.

The retrofit path is what most pool owners overlook. If you already have an in-ground pool, you do not need to buy a new spa or build a new pool to get a swim-in-place experience. A swim jet system bolted onto the deck or wall delivers the same workout for a fraction of the cost.

Factory-Built Swim Spa Cost

A factory-built swim spa is a self-contained acrylic unit that arrives mostly assembled. It combines a swim area, built-in jets, hydrotherapy seats, and a heater in one shell. The unit costs $15,000 to $50,000 by itself. Add delivery ($100 to $1,500), site prep, electrical hookup, and the installed price lands at $20,000 to $60,000.

The advantage is turnkey simplicity. Delivery, drop on a pad, electrical hookup, fill, done. The disadvantage is the price ceiling. Premium models with stronger currents, larger swim areas, or smart features push past $70,000 fast. Swim spas also limit you to the manufacturer's shell size and shape.

Small Dedicated Pool with Swim Jet Cost

The middle path is building a small pool (typically 12 to 20 feet long, 6 to 12 feet wide) and installing a swim jet system in it. The pool build itself runs $20,000 to $60,000 depending on material (vinyl sits at the low end, concrete at the high end). The swim jet system adds $2,000 to $15,000. Site prep, plumbing, and electrical work add $5,000 to $15,000 more.

Total range is $40,000 to $80,000+. This path costs the most but gives you the most flexibility. You pick the pool shape, finish, depth, and jet system separately. It also looks like a real pool rather than a hot tub.

Retrofit Swim Jet on Existing Pool Cost

If you already have an in-ground pool, retrofitting a swim jet is the lowest-cost path to an endless-pool experience. The jet system alone runs $2,000 to $15,000 depending on power and type. Install for deck-mounted systems takes 2 to 4 hours and costs $500 to $2,000 in labor.

Entry-level jet systems start around $2,000 and create a moderate current suitable for recreational swimming. Mid-tier propeller and turbine systems run $4,000 to $10,000 and produce a smoother, wider current suitable for fitness swimming. Premium systems above $10,000 deliver elite-level currents for serious training.

Retrofit systems vary in current quality. Cheap jets push air-mixed water that creates turbulence. Better systems use bubble-free turbines or propellers that deliver a smoother, laminar flow.

What Affects Endless Pool Cost

Six factors shape the final price of any endless pool project. Knowing which one you are paying for makes the total cost more predictable.

Size and footprint. Endless pools cost $250 to $300 per square foot (Angi 2026). Typical sizes run 12 to 20 feet long and 6 to 12 feet wide. A 12-foot unit fits in a small backyard or basement and costs roughly half what a 20-foot unit costs. For most home swimmers, 12 to 15 feet is enough to swim in place comfortably against the counter-current. A 12 by 7 foot footprint (84 sq ft) fits in roughly the space of a large hot tub. A 20 by 8 foot footprint (160 sq ft) needs closer to a one-car garage worth of space.

Current type and power. The counter-current system is what separates a backyard pool from a swim-in-place pool. Air-mixed jet systems are the lowest-cost option but feel turbulent. Propeller and turbine systems create smoother, wider currents at higher cost. Elite-level systems with adjustable speeds suitable for competitive swimmers run two to four times the price of entry-level units.

Install type. Above-ground installs cost the least. Partial in-ground (semi-recessed) costs more because of excavation. Full in-ground costs the most because of the trenching, structural work, and finished decking around the pool.

Site prep and electrical. A swim spa needs a level concrete pad rated to hold 4,000 to 8,000 pounds of water. Electrical hookup needs a dedicated 240V circuit run by a licensed electrician. Together these add $2,000 to $10,000.

Heater and equipment. A heater is almost always required if you want to swim year-round. Gas heaters cost $1,500 to $4,000 installed. Electric heaters cost less upfront but more to run. Pool cover, automation, and lighting add another $1,000 to $5,000.

Permits and delivery. Permits run $400 to $1,800 depending on city. Delivery for a factory-built spa runs $100 to $1,500, more if a crane is needed to lift the unit over a fence or building.

Example Cost Calculation

Here is a typical mid-range factory swim spa install on an existing concrete patio.

A retrofit swim jet on the same homeowner's existing in-ground pool runs roughly $5,000 to $8,000 all-in, or about a quarter of the swim spa total.

Hidden and Ongoing Endless Pool Costs

Two categories of cost sit outside the headline price and are often missing from initial quotes.

One-Time Hidden Costs

• Site preparation. Soil testing ($500 to $2,000), grading ($1,000 to $3,000), and concrete pad pouring ($1,500 to $5,000) are often not included in the base quote.

• Electrical trenching. Running the dedicated 240V line from the main panel to the pool can add $500 to $3,000 if the panel is far from the install site.

• Drainage work. Many sites need a French drain or sump to handle overflow and rain runoff, which adds $500 to $2,500.

• Crane delivery. If the spa cannot be rolled into place, a crane lift adds $300 to $1,500.

• Indoor installs. Putting an endless pool in a basement or garage requires ventilation, dehumidification, and waterproofing, which can double the project cost.

Ongoing Monthly Costs

Monthly costs vary by pool type. Factory swim spas run on the higher end because they are heated year-round to 80–90°F. Outdoor swim pools and retrofitted in-ground pools run lower because most owners only heat during swim season.

Over a year, expect $1,000 to $3,600 in operating costs. Heated indoor pools cost more. Pools in mild climates with insulating covers cost less. The full breakdown lives in our guide on pool maintenance cost.

How to Save Money on an Endless Pool

You can cut the total cost in half or more by choosing the right install path for your situation.

If you already have a pool, retrofit a swim jet system. A swim jet bolted onto an existing in-ground pool delivers the same swim-in-place experience as a factory swim spa, for a fraction of the cost. Retrofit systems split into two approaches.

Portable, clamp-on systems mount to the pool edge in seconds. No deck drilling, no electrical work, no concrete pad. They run on battery and can be moved or stored when not in use. The iGarden Swim Jet X Series is one option in this category.

iGarden Portable Swim Jet X

Best-in-Class Water Flow: AI Inverter Tech delivers the strongest water flow in its class. 1-Min Setup: No drilling, no renovation. Clamp the jet and go. All in One: Training, playing, relaxing, experience the freedom of unlimited swimming.

Buy Now

Deck-mounted systems install on the pool deck with a stronger, smoother counter-current. They need a one-time electrical hookup but no major pool renovation. The iGarden Swim Jet P Series is one option in this category.

Our roundup of the best swim jet systems covers the broader market and what to compare.

If you are building from scratch, build a smaller pool. A 12-foot pool with a strong jet system gives the same swim workout as a 25-foot lap pool, at half the construction cost. Many builders default to bigger pools because that is what sells. Push back and ask what changes if you go smaller.

Skip features you will not use. Underwater treadmills, smart automation, custom lighting, and integrated speakers add $5,000 to $20,000. If you are buying the pool to swim in, the swim experience is what matters. Everything else is optional.

Buy in the off-season. Swim spa and pool installers run slow seasons from November through February in most regions. Discounts of 10% to 20% are common during these months. Some manufacturers also run pre-season package deals at 20% to 30% off bestselling configurations.

FAQs

Is an endless pool worth the cost?

For dedicated swimmers who want daily swim training without a full-size lap pool, yes. A swim jet system in an existing pool ($2,000 to $15,000) usually beats a factory-built swim spa ($20,000+) on cost-per-swim. A factory swim spa adds value if you also want a hot tub and have no existing pool.

What is the lowest-cost endless pool option?

The lowest-cost endless pool option is a retrofit swim jet system added to an existing pool. Entry-level jet systems start around $2,000 plus install. The next step up is a small above-ground swim spa, which starts around $15,000 for the unit plus delivery.

How much does it cost to run an endless pool per month?

Running an endless pool costs $90 to $305 per month on average, covering heat, electricity, chemicals, and water. Year-round heated pools in cold climates run higher. Outdoor pools with covers in mild climates run lower.

Does an endless pool cost less than an in-ground lap pool?

Yes, in most cases. A traditional in-ground lap pool costs $50,000 to $100,000+ to build. A complete endless pool setup costs $20,000 to $60,000. A retrofit swim jet on an existing pool costs $2,000 to $15,000 plus install.

How long does an endless pool installation take?

A factory-built swim spa installs in 1 to 4 days once on site. A small dedicated pool with a swim jet takes 4 to 8 weeks to build. A retrofit swim jet installs in 2 to 4 hours for deck-mounted systems and 1 to 2 days for systems requiring plumbing work.

Do endless pools add value to a home?

Endless pools and swim spas usually do not add resale value the way an in-ground pool does, since some buyers see them as personal use items. A well-integrated in-ground swim jet pool can add value in active-swimmer markets. Above-ground swim spas typically transfer with the homeowner.

Can you install an endless pool indoors?

Yes, indoor installs are common for basements, sunrooms, and garages. Expect indoor installation to cost 50% to 100% more than the same unit outdoors. The added cost covers ventilation, dehumidification (a 60-pint or larger unit), waterproof flooring, and structural reinforcement for the unit's weight. Year-round usability is the main reason indoor installs make sense despite the higher cost.

Do you need a permit for an endless pool?

In most U.S. jurisdictions, yes. Permits typically cost $400 to $1,800 and cover electrical work, plumbing, and sometimes structural review for in-ground installs. Above-ground swim spas under a certain water depth (usually 18 to 24 inches) may be exempt in some cities. Check with your local building department before ordering, since some unincorporated areas have no permit requirement at all.