AquaLife Lagoon vs Largo LS Hot Tub: Honest Comparison for Smart Buyers

The AquaLife Lagoon and Largo LS are the same price, the same dry weight, and both convertible between 120V plug-and-play and 240V. The difference is entirely about shape, seating purpose, and who you are soaking with. The Lagoon is an octagonal 8-person social spa — all bench seats, wide open center, maximum group capacity. The Largo LS is a rectangular 5-person therapy spa — dual full-body loungers positioned at each end, designed for two people to recline simultaneously facing each other.

• Both are priced at $3,535. Both weigh 300 lbs dry. Both sit at 29.5 inches deep.
• Both run on 120V/15A plug-and-play and convert to 240V/40A without rewiring.
• Both include an ozone purification system, multicolor LED lighting, three programmable energy modes, and an ASTM-certified locking cover.
• The Lagoon is octagonal, 74×74 inches, and seats 8 persons on all-bench seating.
• The Largo LS is rectangular, 61×71 inches, and seats 5 persons with dual full-body loungers at both ends.
• Choose the Lagoon for the highest group capacity at this price — 8 people, all facing the center. Choose the Largo LS for a couples therapy spa where two users recline simultaneously in full-body lounger positions.

AquaLife Lagoon vs. Largo LS: Side-by-Side Comparison

Same Price, Same Weight, Completely Different Purpose

The Lagoon and Largo LS are the most precisely matched pair in the AquaLife lineup — identical price, identical dry weight, identical depth, identical voltage options. The only meaningful differences are shape and seating intent.

This is a deliberate product architecture decision. AquaLife has engineered two spas for the same budget and the same installation scenario — a 120V plug-and-play spa that anyone can set up on delivery day — but targeted at two entirely different household needs. Buyers who end up with the wrong model for their situation will have made a preventable mistake that no amount of jet pressure or LED lighting can fix.

The Lagoon answers: “We want a spa that everyone in the household — and guests — can use simultaneously.” It seats 8, has no lounger taking up center space, and uses an octagonal shell that creates a round-table conversation dynamic among all users.

The Largo LS answers: “Two of us want to recline fully at the same time and receive focused therapy.” It seats 5, has dual full-body loungers at both rectangular ends, and is built around an intimate two-person therapeutic experience even when additional guests occupy the bench seats.

The single deciding question: Is your primary use case social — fitting the most people possible in the water at once — or therapeutic — two people reclining in lounger positions every night?

The Shape Difference Is Not Aesthetic — It Changes the Entire Social Experience

The Lagoon is octagonal. The Largo LS is rectangular. These shapes produce fundamentally different social dynamics in the water, not just different footprints on a deck.

An octagonal spa creates a near-circular interior. Every seat faces the center. Every user makes eye contact with every other user. No seat has a preferred or privileged position — the person to your left is as close to you as the person across from you. This geometry is why round and octagonal spas have historically been associated with family and group soaking: the shape itself enforces equal participation and natural conversation among all 8 users.

A rectangular spa creates a directional interior with two defined ends. The Largo LS places a full-body lounger at each end of the rectangle, with bench seats along the sides. The two lounger users recline facing each other down the length of the spa. This geometry creates an intimate axis — two people in direct visual alignment, both fully reclined — with side seating for additional guests. The experience of soaking in a Largo LS lounger position is qualitatively different from soaking in an octagonal bench seat: you are horizontal, full-body immersed, looking directly at your partner across the water.

For couples who soak together nightly, the Largo LS’s rectangular dual-lounger layout is a genuine therapeutic and relational design choice. For families with teenagers, households that regularly entertain 6–8 people, or anyone whose primary spa use is group time rather than couples therapy, the Lagoon’s octagonal 8-seat layout delivers more value from the same $3,535 and 300-lb investment.

Seating Capacity: 8 vs 5 — What It Actually Means

The Lagoon seats 8 persons. The Largo LS seats 5. At the same price and same footprint class, this difference determines which model serves a household’s actual social reality.

The Lagoon’s 8-person capacity at 74×74 inches achieves its count through the octagonal shape, which distributes seating around the full perimeter with no footwell intrusion from a lounger. All 8 seats are bench seats at a consistent height and depth. There is no primary or secondary position — every seat delivers the same experience. For families with 4+ members, or households that regularly host friends, the Lagoon is the only AquaLife model in this price range that seats a full group without someone waiting on the deck.

The Largo LS seats 5 across a 71×61-inch rectangular shell. Two of those five positions are full-body loungers — they extend along the bottom of the shell and take up significantly more floor space per user than a bench seat. Three bench seats line the sides. Realistically, the Largo LS is most comfortable as a 2-person daily spa and a 4-5 person occasional group spa. When all 5 seats are occupied, the two lounger users’ legs occupy the central floor of the spa — reducing the practical movement space for bench-seat users entering and exiting.

Neither configuration is wrong. They serve different household compositions and different primary use patterns.

Voltage Flexibility: Both Models Are Convertible — Here Is What That Means

Both the Lagoon and Largo LS start as 120V/15A plug-and-play spas and convert to 240V/40A without purchasing a different unit. This is one of the most valuable features shared by both models — and most buyers do not fully understand what it means operationally.

At 120V, both spas plug into any standard household outlet on a dedicated 15-amp GFCI circuit. No electrician. No permit in most jurisdictions. No installation cost beyond the outlet that likely already exists on your patio or deck. Both spas run at 120V, but with a performance trade-off: the heater and pump cannot run simultaneously at full power on a 15-amp circuit, which means the spa takes longer to heat up and may heat more slowly during a soak in cold weather.

At 240V/40A, both spas operate at their designed maximum performance: full heater output and full pump pressure running simultaneously, faster heat-up times, and more consistent water temperature maintenance in cold climates. The conversion requires a licensed electrician to install a 240V/40A dedicated circuit — typically a one-time cost of $300 to $600 depending on your electrical panel’s proximity to the installation site.

The convertible design means you do not have to make this decision at purchase. You can buy the spa, plug it in at 120V today, and upgrade the circuit later when budget and timing allow. Both the Lagoon and Largo LS are built to deliver genuine therapeutic value at 120V — and meaningfully better performance when upgraded to 240V.

How Different Is the Therapy Experience?

The Lagoon delivers 20 jets distributed across 8 seats — approximately 2.5 jets per person at full capacity. The Largo LS delivers 22 stainless steel jets across 30 hydro ports distributed across 5 seats — approximately 6 jets per person — with the lounger positions receiving the densest coverage.

Lagoon therapy profile:

• 20 stainless steel jets distributed across an octagonal perimeter
• 2 BHP 2-speed pump delivers consistent pressure across all seating zones simultaneously
• At 8-person capacity, jet density per seat is intentionally moderate — this is a social soak spa, not a clinical therapy spa
• At 2-person or 4-person occupancy, unused jets concentrate water flow to occupied seats, increasing effective pressure per user
• 29.5-inch depth provides a comfortable upright soak with water at mid-chest level for most adults
• Ozone purification handles the higher water volume demands of an 8-person shell

Largo LS therapy profile:

• 22 stainless steel jets across 30 hydro ports — higher jet density per seat than the Lagoon
• Dual lounger positions receive the most concentrated jet coverage: neck, shoulders, mid-back, lower back, hamstrings, calves, and feet all targeted from a reclining position
• Bench seat positions along the sides receive back and shoulder coverage in the upright seated position
• At 2-person occupancy in both loungers, all 30 hydro ports serve just two users — delivering more focused pressure per body zone than any shared-capacity calculation can convey
• ASTM-certified tapered cover (thicker at center, 2–4 inch taper) retains heat more effectively than a flat cover — particularly relevant for a smaller water volume

ASTM-Certified Covers: Both Models Include Them — the Largo LS Has a Tapered Advantage

Both the Lagoon and Largo LS include ASTM-certified locking covers — the safety standard that matters most for households with children. The Largo LS cover is specifically tapered from 2 to 4 inches, providing better heat retention and rain drainage than a flat cover.

ASTM certification (ASTM F1346) means the cover has been independently tested to support a specific weight load without collapsing — typically the weight of a child who might climb onto a closed spa. In households with young children or pets, an ASTM-certified cover is a non-negotiable safety feature that many competing spa brands in this price range do not provide.

The Largo LS’s tapered cover adds a practical thermal advantage on top of the safety certification. A cover that is 4 inches thick at the center and tapers to 2 inches at the edges loses less heat at the center — where water surface area is greatest — and channels rain and debris off the edges rather than pooling on top. For daily users who lift and replace the cover every evening, this translates to more consistent water temperature on arrival and less water accumulation on the cover surface to wipe off before entering.

Daily Use and Lifestyle Fit

The Lagoon is the group-first spa. The Largo LS is the couples-first spa. Both are priced and weighted identically — the decision is purely about who is using the spa and how.

Lagoon — ideal for:

• Families with 4+ members who all want to soak at the same time
• Households that regularly host friends or neighbors for evening soaks
• Anyone who wants the maximum headcount in the water without any seat hierarchy
• Buyers who prefer the open-center round-table conversation dynamic of an octagonal shell
• Groups where nobody wants to be the person sitting in the less desirable seat

Largo LS — ideal for:

• Couples who soak together nightly and both want full-body reclining therapy simultaneously
• Users managing back pain, lower body soreness, or post-workout recovery who need a lounger position daily
• Households where 2 people soak regularly and 1–3 additional guests join occasionally
• Buyers coming from a single-lounger spa who specifically want the face-to-face dual-lounger experience at this price point
• Anyone for whom the rectangular shape fits a specific deck layout that an octagonal footprint would not

Final Verdict: Lagoon vs. Largo LS

The Lagoon and Largo LS are the same investment — same price, same weight, same voltage flexibility, same warranty. There is no financially superior choice. The only question is which spa matches the daily reality of your household.

Both the Lagoon and Largo LS are manufactured by AquaLife (Strong Spas) in Central Pennsylvania, USA. Both ship from Amazon.com with a 30-day return guarantee. Both carry a 5-year shell warranty, 2-year plumbing and electrical warranty, and 1-year ozonator and labor coverage.

The Lagoon is the right spa when your household is large and social. The Largo LS is the right spa when two people want equal full-body therapy every night.

Shop both models at aqualifehottubs.com or visit the AquaLife Amazon Store for current pricing and fast delivery.