Above ground pools come in six types based on construction: steel, resin, hybrid, aluminum, fiberglass, and soft-sided. Each comes in round, oval, or rectangular shapes, and any hard-sided type can be installed fully above ground or partially buried as a semi-inground setup. The right choice depends on how long you want to keep the pool, your climate, and your budget.
|
Type |
Construction |
Best For |
Lifespan |
Kit Price (Approx.) |
|---|---|---|---|---|
|
Steel frame |
22-24 gauge galvanized steel wall, steel uprights and rails |
Budget hard-sided buyers in moderate climates |
10 to 15 years |
$1,000 to $3,000 |
|
Resin frame |
Steel wall with resin uprights, rails, and connectors |
Coastal, humid, or saltwater pools |
15 to 20 years |
$1,500 to $3,700 |
|
Hybrid frame |
Steel wall and uprights with resin top rails |
Long-term backyard fixture |
20+ years |
$2,500 to $5,000 |
|
Aluminum frame |
Continuous aluminum wall, aluminum or stainless components |
Cold climates, freeze-thaw conditions |
20+ years |
$3,000 to $10,000 |
|
Fiberglass |
One-piece molded shell, no separate frame |
Permanent semi-inground installation |
25+ years |
$7,000 to $20,000+ |
|
Soft-sided |
Reinforced PVC liner with inflatable ring or light metal frame |
Seasonal use, small yards, trial setups |
2 to 5 seasons |
$200 to $2,500 |
Hard-Sided Above Ground Pools
Hard-sided pools have a rigid wall and structural frame. Five frame materials dominate the market, each with different lifespan, climate handling, and cost.
Steel Frame Pools
The wall is corrugated galvanized steel, typically 22 to 24 gauge (lower number = thicker metal), with a multi-layer coating of zinc, epoxy primer, and polyester topcoat. Steel is the strongest hard-sided option under water pressure and dominates diameters of 24 feet and up. The trade-off is rust. Once a coating chip exposes bare metal, corrosion spreads under the surface coating with no field repair that lasts. Coastal salt air and lawn chemicals accelerate this, and steel pools should stay water-filled through cold seasons since frozen ground can buckle an unsupported wall.
Resin Frame Pools
"Resin" usually means resin top rails, uprights, ledges, and connectors paired with a galvanized steel wall. True all-resin pools (including the wall) do not exist in structural sizes. Resin will not rust, stays cool to the touch in direct sun, and tolerates saltwater pools. Downsides are higher upfront cost and brittleness in extreme cold, where lower-grade resin can crack after several freeze-thaw cycles. UV protection is usually a surface coating, so deep scratches shorten part life.
Hybrid Frame Pools
Hybrid pools use galvanized steel for the wall and uprights and resin for top rails, ledges, connectors, and stabilizer caps. Top rails alone account for most replacement-part demand on older pools, so swapping them to resin extends pool life noticeably. "Hybrid" is not a regulated term: some are 70 percent steel and 30 percent resin, others are 40/60. Read the parts list before buying. Most modern higher-end above ground pools are hybrids and typically outlast all-steel pools by 5 to 10 years. Warranties are often split, with one term for steel and a longer term for resin.
Aluminum Frame Pools
Aluminum pools use a continuous aluminum wall instead of corrugated steel, often with marine-grade alloys and insulated panels. Aluminum is rust-resistant, flexes slightly under water pressure rather than denting, and handles freeze-thaw cycles without becoming brittle, making it the standard choice in cold climates. Downsides are limited selection, higher cost than hybrid pools, and replacement parts that can be hard to source after a model line is discontinued.
Fiberglass Pools
Fiberglass above ground pools are a one-piece molded shell with no separate frame, liner, or coating layers. They almost always ship as semi-inground installations because the shell is too tall to install fully above grade. The gel-coat finish needs no liner replacement. Fiberglass is the longest-lived option (25+ years), the most expensive, and the least flexible to relocate. Repairs are gel-coat patching rather than parts replacement. Selection is narrow since shells ship on flatbed trucks, which limits transport range.
Soft-Sided Above Ground Pools
Soft-sided pools skip the structural frame and use a reinforced PVC liner as the pool wall. They are the cheapest entry point into pool ownership and pack down for off-season storage, but lifespan is much shorter than hard-sided pools.
Easy-Set Inflatable Pools
Easy-set pools have an inflatable top ring that rises as the pool fills. They install in under an hour and last 2 to 5 seasons. Wall depth is fixed by the ring diameter (a 15-foot easy-set holds about 36 inches of water; a 10-foot model around 24). Most use 0.4 to 0.8 mm reinforced PVC liners. The smaller water volume makes chemical dosing less forgiving, and in-line filters or heaters cannot be added.
Metal Frame Soft-Sided Pools
These use a steel or aluminum frame outside a PVC or laminated liner. They hold shape better than easy-set pools, come in larger sizes (up to 32 feet long), and are the only soft-sided category with proper rectangular shapes. Higher-end models like Intex Ultra XTR Frame and Bestway Power Steel approach hard-sided performance and can support sand filters and salt systems. Pin connectors corrode at the joints between seasons, and the liner cannot be replaced separately on most models.
Above Ground Pool Shapes
Round Pools
The default shape and the cheapest to manufacture. Standard diameters are 12, 15, 18, 21, 24, 27, 30, and 33 feet, with 18 to 24 feet most common. Water pressure distributes evenly around the wall, so round pools need no external buttresses. Liner choice matters: overlap liners drape over the wall and clamp on the outside (cheapest), beaded liners snap into a track at the top for a clean line, and unibead liners install either way.
Oval Pools
Oval pools give more linear swim space, suiting laps better than a round of the same volume. Common sizes are 12 by 24, 15 by 30, and 18 by 33 feet. They cost more than equivalent-volume rounds because the straight side walls need external support. Buttressed ovals use external metal brackets that extend two to four feet beyond each long wall. Strapped ovals (yardmore systems) bury heavy steel straps under the pool, freeing the side footprint at the cost of harder installation.
Rectangular Pools
True rectangular above ground pools are uncommon because flat walls fight water pressure that wants to bow them outward. The few options are panel-built aluminum systems with substantial bracing, with prices closer to in-ground pools. Most rectangular shapes labeled "above ground" at major retailers are really soft-sided metal frame pools where a steel frame supports a flexible PVC liner.
Above Ground Pool Depths and Wall Heights
Standard hard-sided wall heights are 48, 52, and 54 inches, giving roughly 42, 46, and 48 inches of water once filled below the rail. A 52-inch wall is the most common adult choice because it allows submerged shoulders for an average-height swimmer. A 48-inch wall suits younger families. Some hybrid and aluminum systems offer 54 or 60-inch "oasis" panels for true 48 to 54 inches of water. Soft-sided pools sit lower at 24 to 36 inches depending on ring or frame size. Going deeper than 54 inches requires a true semi-inground or in-ground build.
Semi-Inground Pools
Any hard-sided above ground pool can be installed partially buried, with two to four feet of the wall sunk into the ground. This blends visually into a sloped yard, keeps the water cooler in summer, and reduces the wall height to climb.
Backfill matters. Pea gravel or sand drains well and does not hold moisture against the wall. Native soil (especially clay) holds water against the wall and accelerates corrosion on steel pools. Drainage at the base is non-negotiable since groundwater pressure against an empty pool can collapse the wall inward. Resin, hybrid, and fiberglass pools handle semi-inground installation better than steel. Electrical bonding requirements often change for buried pools and may require a licensed electrician, and many manufacturer warranties exclude semi-inground installations, so confirm in writing before digging.
How to Choose the Right Above Ground Pool
-
Longest life with the least maintenance: hybrid or aluminum frame, round shape.
-
Cheapest hard-sided pool: steel frame, 18 to 24 feet round.
-
Coastal or saltwater pools: resin or aluminum. Steel rusts faster than the warranty assumes in salt air.
-
Laps or family swim space: oval. Plan for the buttress footprint or strapped-system installation work.
-
2 to 3 year trial or seasonal use: easy-set or metal frame soft-sided.
-
Permanent backyard fixture that looks built-in: semi-inground installation of a resin, hybrid, or fiberglass shell.
Can You Use a Robotic Pool Cleaner on an Above Ground Pool?
Yes, on hard-sided pools. Steel, resin, hybrid, aluminum, and fiberglass pools have firm floors and rigid walls that climbing-style robotic cleaners can grip. Cordless robotic cleaners like the iGarden Pool Cleaner K series cover floor, walls, and waterline in one cycle on round, oval, or rectangular hard-sided pools. Soft-sided and easy-set pools cannot use climbing cleaners because flexible walls and uneven floors do not give them traction, so cleaning falls back to manual vacuums and skimmer nets.
iGarden Pool Cleaner K Series
One Charge, Lasts All Week. A Turbine-Grade Impeller & An Optimized Flow System. Intelligent Path Optimization & Adaptive Mobility
FAQs
What is the number one above ground pool?
Rankings depend on what the buyer values. Steel frame round pools sell the most units due to price. Hybrid pools win most longevity rankings. Easy-set pools rank highest for ease of setup.
What are common problems with above ground pools?
The biggest problem across all types is an uneven base. Even a one-inch slope across the diameter puts uneven outward pressure on the wall, leading to bowing or leaks at the bottom track, and a filled pool cannot be re-leveled. Other recurring issues are liner wrinkles from a shifting base, frozen plumbing fittings on pools that were not properly winterized, and pin-joint corrosion on metal frame soft-sided pools between seasons.
Can you put a fiberglass pool above ground?
Partially. Fiberglass shells almost always go semi-inground rather than fully above grade, with the top 18 to 24 inches exposed. The unsupported wall would flex too much without surrounding soil to brace it.
How much does an above ground pool cost?
Soft-sided pools start at $200 and go up to $2,500. Steel frame round pools run $1,000 to $3,000 for the kit. Resin and hybrid pools land in the $1,500 to $5,000 range. Aluminum frame pools span $3,000 to $10,000. Fiberglass shells start around $7,000 and easily clear $20,000 once you account for the semi-inground installation that fiberglass requires. Add another $1,000 to $3,000 for professional installation if you do not assemble the pool yourself.
What type of above ground pool lasts the longest?
Fiberglass shells last the longest at 25+ years. Hybrid and aluminum frames reach 20+ years, resin 15 to 20, steel 10 to 15. Soft-sided pools rarely make it past 5 seasons.
What shape above ground pool is best?
Round is best for most buyers. It costs less, installs faster, and has cheaper replacement liners. Oval is the better choice for lap swimming or long narrow yards, but expect higher cost and buttress brackets that extend beyond each long wall. Rectangular shapes are rarely worth chasing above ground.