Intex Inflatable Hot Tubs: PureSpa vs SimpleSpa Compared

Best for
Larger households planning a saltwater upgrade

Best for
Groups wanting a covered PureSpa setup

The INTEX PureSpa 6 Person Inflatable Hot Tub with model number 28451EP is a PureSpa Greystone Deluxe model built around the features that define the line: heated air bubble technology, Fiber-Tech beam construction, a built-in Hard Water Treatment System and an energy-efficient spa cover made from high-density thermal-resistant foam. Intex says that cover improves efficiency by up to 50 percent, which matters if you want the water ready for a quick soak after a session instead of waiting on a cold tub.

There is one thing to flag. The listing title says six person, but the listed item dimensions are 77 by 77 by 28 inches, which is smaller than the 85-inch footprint shown on the other six-person listings here. The listing also does not specify jet count or water capacity. Measure your space for the larger size and confirm the details on the product page before you commit. Maintenance is straightforward: the integrated control box handles cartridge filter replacement, and two S1 Type filter cartridges come in the box. It carries a 1 year limited warranty and weighs 130.5 pounds as listed.

• High-density foam cover rated for up to 50 percent better efficiency
• Fiber-Tech beam construction for stability and a plush surface
• Built-in Hard Water Treatment System to reduce mineral buildup
• Two S1 Type filter cartridges included

This second INTEX PureSpa 6 Person Inflatable Hot Tub listing shares the same heated bubble system, Fiber-Tech walls, foam cover and hard water treatment as the 28451EP, but the listed dimensions are 85 by 85 by 28 inches, which lines up with a true six-person layout. It runs on 120-volt power, so it plugs into a standard household outlet protected as the manual directs, and the listing color is blue.

The standout here is its upgrade path. Intex lists compatibility with the Titanium Cell Saltwater Conversion Kit, part number 25830, which is sold separately. Drop in the cell, add natural salt, and the system generates its own sanitizer for a softer, chlorine-free feel. If you are curious about an Intex saltwater hot tub but do not want to commit on day one, this is the six-person model to look at. The listing does not specify jet count, water capacity or warranty, so check those on the page.

For crews that like to decompress together after a tournament night, this is a strong pick. If you want every number spelled out in the listing, the 28427EH below gives you more to go on.

Best for
First-time spa owners keeping things simple

The INTEX SimpleSpa 4 Person Inflatable Hot Tub is the Intex SimpleSpa Bubble Massage model, number 60022E-BW, and it is the most straightforward tub in this group. It lists 100 jets, a 210-gallon water capacity, seating for four, and outer dimensions of 77 by 77 by 28 inches. Heated air bubble technology is the same idea as the PureSpa models, and the Hard Water Treatment System and two S1 Type filter cartridges are included too.

Where it differs is construction and insulation. Instead of Fiber-Tech beams, the SimpleSpa uses horizontal beam construction with a strong mesh exterior that resists punctures and abrasions. It comes with an insulated spa cover and insulated ground cloth rather than the high-density foam cover of the PureSpa line, so expect it to hold heat less effectively on cold nights. For a first backyard spa, or for someone who wants a soak a few times a week rather than every evening, it covers the essentials.

• 100 bubble jets and a 210-gallon capacity
• Mesh exterior built to resist punctures and abrasions
• Insulated spa cover plus insulated ground cloth
• Two S1 Type filter cartridges included

Best for
Six-person crews after the fullest spec sheet

The INTEX 28427EH PureSpa Bubble Massage Spa is the most fully documented tub in the lineup, and that alone makes it easy to recommend. It seats up to six, measures 85 by 28 inches outside and 65 by 28 inches inside, holds 290 gallons, and heats water across a 68 to 104 degree Fahrenheit range. The description lists 140 bubble jets around the interior, activated from a tilt-adjustable control panel.

Heating comes from a Positive Temperature Coefficient (PTC) heater that Intex says is designed for efficient heat transfer, safety and longevity. The foam cover, Fiber-Tech beams and hard water treatment are all here, and the title calls it saltwater system ready. The box includes the spa set, two cartridges and a bag, and the tub weighs 109.6 pounds. If your recovery ritual involves several friends piling in after a LAN night, this Intex PureSpa 6 person model gives you the most room and the clearest spec sheet.

Keep in mind that 290 gallons is a lot of water to fill, heat and treat. If the tub will mostly hold two people, a four-person model will warm up more easily and take up less space.

Best for
Small patios and duo recovery sessions

Best for
Couples wanting extras in a compact tub

The Intex PureSpa 4 Person Inflatable Hot Tub with model number 28449EH packs a lot into a smaller shell. The listing highlights a 69 by 28 inch size, 140 jets, two headrests and an LED light, plus saltwater system compatibility, with the salt cell not included. That jet count matches the six-person 28427EH, so a smaller group gets the same bubble density in a tighter space.

It uses a PTC heater, the foam spa cover, Fiber-Tech construction and the built-in hard water treatment. Like the six-person blue listing, it works with the Titanium Cell Saltwater Conversion Kit (PN 25830, sold separately). The color is listed as black. For a streamer who wants a nightly soak with a partner and likes a bit of ambient lighting, this is the most feature-rich four-person option. Pair it with an Intex spa seat if you want a more upright position during longer soaks.

The INTEX PureSpa 4 Person Inflatable Hot Tub, model 28449EP, is the compact PureSpa Greystone Deluxe. It measures 69 by 69 by 28 inches, holds 210 gallons and weighs 118.8 pounds as listed. You get the heated bubble system, foam cover, Fiber-Tech beams, hard water treatment and two S1 Type filter cartridges.

The listing does not specify jet count, and it does not mention the headrests, LED light or saltwater compatibility that appear on the 28449EH listing, so do not assume those extras come with it. What it does give you is the smallest PureSpa footprint here, which makes it a good match for a narrow deck or a small patio. If you want the extras, the 28449EH is the better four-person choice. If you want PureSpa build quality in the least space, this is it.