Hot Tub Buying Guide: Choose the Right Size, Jets & Seating

A 6-person hot tub costs between $4,000 and $12,000 new and roughly $1,500 to $4,000 used in good shape. Pick the wrong size, the wrong jet count, or the wrong electrical setup and you’ll either resell at a loss or sit in an empty backyard staring at a 5,000-pound paperweight. I’ve watched both happen.

This hot tub buying guide is the version I wish someone had handed me three years ago. I’ve helped move, sell, inspect, and deliver hundreds of these things on Commonplace. Most people overspend on jets. Most underspend on size. And almost everyone skips the electrical conversation until the installer is in the driveway.

How to Use This Hot Tub Buying Guide Before You Spend a Dollar

The first move when buying a hot tub is to settle three numbers before you ever look at a model: how many people will use it most days, how big your install spot is, and what voltage you have running to the outside of your house. Skip any of those and the rest is guesswork.

Most buyers I talk to start backwards. They fall in love with a 7-person hot tub at the showroom, sign the papers, and only later realize their patio gate is 32 inches wide and the tub itself is 84. Or they buy a 110v plug-and-play because it sounds easy, then spend two hours every winter morning waiting for it to reheat.

Here’s the order I tell people to follow:

1. Measure the install spot, including the path the tub takes to get there
2. Confirm electrical (220v hardwired vs 110v plug-and-play)
3. Pick the seat count for your real usage, not your dream usage
4. Then, and only then, start comparing brands and jet counts

Get those four locked in and the rest of the decision is mostly aesthetics.

The Right Hot Tub Size for Your Yard, Deck, or Patio

The standard footprint for a 6-person hot tub is roughly 7 feet by 7 feet, and you need at least 12 inches of clearance on every side for service access. That’s the simple rule almost no one follows.

I’ve seen people cram a 7×7 tub into an 8×8 corner and then realize the technician can’t pull the side panel off when the heater dies. Now they’re paying for a crane to lift the thing so someone can reach a $200 part.

Hot tub footprints typically break down like this:

1. 2 to 3 person spa: about 5’4″ x 6’8″
2. 4-person hot tub: about 6′ x 6′
3. 5-person: roughly 7′ x 7′
4. 6-person hot tub: 7′ to 7’6″ square
5. 7-person hot tub: 7’6″ x 8′ or larger

A loaded hot tub plus water plus people weighs about 5,000 pounds. That number matters because most residential decks are rated for 50 pounds per square foot, and a 7×7 tub at 5,000 pounds is more than 100 pounds per square foot. If you’re putting one on a deck, get it inspected first. I’ve watched a deck deflect under a tub during fill, and it’s not subtle.

For a hot tub for small backyard situations, a 4-person tub is the sweet spot. You give up the lounger seat, sure. But you keep your yard, you keep your sightlines, and the electrical and water bills stay manageable.

If you’re shopping these footprints used, our hot tub category filters by seat count, which is the only filter that actually matters here.

How Many Jets You Actually Need in a Hot Tub Buying Guide

The right number of jets in a hot tub is between 24 and 50, and after that the jet count is mostly marketing. I’ll fight on that.

Showroom salespeople love jet count because it’s the easiest number to win on. What they don’t mention is that the pump pushing 110 jets is the same 2.5 horsepower pump pushing 60. Split the same water flow across more nozzles and each one feels like a soft trickle. More is not more. What actually matters is jet placement and pump strength.

When inspecting a hot tub jets count for resale, I look for three things:

1. Targeted jets at the neck, lower back, and calves
2. At least one rotating jet per seat for a moving massage
3. A diverter knob so you can shift power between zones

Saltwater hot tub systems and freshwater chlorine tubs have the same jet hardware; the difference is just chemistry. Don’t pay extra for jet count just because the brochure has more nozzles.

A used 6-person hot tub in good condition sells for $1,500 to $4,000, and at that price you can afford to be picky. Sit in the dry tub. Picture where each jet hits your body. If the answer is “kind of randomly,” skip it.

Hot Tub Seating Layout: Loungers, Bench Seats, and Real Capacity

A hot tub seats fewer adults than the spec sheet says, almost every time. A “6-person” tub fits 4 adults comfortably. A “4-person hot tub” fits 2 plus a kid.

Manufacturers count molded seats, not who can fit shoulder-to-shoulder without bumping knees. This is the most consistent overstatement in hot tub marketing.

Three seating layouts you’ll see across the major brands:

1. All-bench: every seat is the same height, easy in and easy out
2. Lounger plus bench: one full-recline seat plus 4 to 5 upright seats
3. Captain’s chair plus bench: one deeper bucket seat plus standard benches

The lounger seat is the most divisive feature in hot tubs. I love mine. But shorter folks slide off it, taller folks float out of it, and during parties it’s the worst seat because you can’t really talk to people sitting upright. If two of you will use the tub together, get the lounger. If you bought the tub to host, skip it.

Detail almost no one mentions: a lounger seat lowers the resale value of your specific tub by about $300 to $500 because the buyer pool is narrower.

New vs Used Hot Tub: Which Buying Strategy Wins on Price

Buying a used hot tub saves you 50% to 70% off retail and is the single biggest cost lever if your budget is under $6,000. New hot tubs depreciate hard the second they leave the showroom, and a 3-year-old Jacuzzi or Sundance in good shape often runs and feels identical to the new model.

A few things to inspect on any used hot tub before you pay:

1. Run all jets and pumps for 15 minutes minimum, listen for grinding or surging
2. Check the inside shell under the waterline for blistering or stress cracks
3. Open the side panel and look for water stains on the wood frame or insulation
4. Test the heater by feeling the discharge water (should be 102 to 104 in operation)
5. Ask for the last 6 months of chemistry and check the cover weight (a soggy cover is $400 to replace)

A used hot tub price for a 4-person tub from a known brand sits around $1,200 to $2,500. A 6-person from Jacuzzi, Sundance, Hot Spring, or Caldera sits at $2,500 to $5,000 used.

The risk of buying used isn’t the tub. It’s the logistics. Finding one on Craigslist means renting a tilt cart, recruiting four friends, and praying nothing cracks during the 90 minutes it takes to flip a 700-pound tub onto its side. I’ve seen sellers ghost. I’ve seen tubs dropped on driveways.

That logistics gap is why we built Commonplace. Our drivers inspect the tub at the seller’s house, send you a video, and white-glove deliver it with a 60-minute window to test on your end. Pay $1 to reserve, accept or reject after delivery.

Hot Tub Brands That Hold Value (and Brands to Skip)

The best hot tub brands for resale are Jacuzzi, Sundance, Hot Spring, Caldera, Bullfrog, and Marquis. These are the brands that hold 50% to 60% of original value at the 3-year mark and parts are still available at 10 years.

Brands I’d think twice about: most rebranded big-box tubs (Lifesmart, Aquarest, Strong Spas at the lower tiers). They work fine for the first 2 to 3 years, but heater modules and circuit boards become hard to source after that, and a $400 control board on a $3,000 tub is a tough pill.

Jacuzzi is the safest brand for a first hot tub. The name is in your head for a reason. They’ve been making spas since 1956, parts are in every plumbing supply, and a used Jacuzzi J-300 series sells in 10 days on average vs 30 days for off-brand tubs.

Quick rule of thumb on brand value: if you can’t find replacement filter cartridges at a hardware store within 20 miles of you, the brand isn’t worth buying.

Hot Tub Delivery, Electrical, and Setup Most Buying Guides Skip

Hot tub delivery and setup costs $300 to $1,200 depending on access, electrical, and whether you need a crane. Most buying guides hand-wave this. It’s the line item that ruins people’s budgets.

Hot tub electrical requirements come in two flavors. A 110v plug-and-play hot tub draws from a standard 20-amp dedicated outlet and heats slowly (about 1 to 2 degrees per hour). A 220v hardwired tub needs a dedicated 50-amp or 60-amp circuit run by an electrician and heats 2 to 3x faster. Plug-and-play is fine for vacation use; if you’re actually going to use the tub year-round, get 220v.

Hot tub installation cost for an electrician runs $400 to $1,200 for a 220v line, depending on how far the panel is from the install spot. Get that quote BEFORE you buy the tub. I’ve seen a $2,500 tub turn into a $5,500 project once trench and breaker were factored in.

Things that get skipped in almost every spec sheet:

1. Pad: concrete, gravel, or composite pad rated for 5,000 pounds (not pavers, not deck boards directly)
2. Cover lift: $150 to $300, but your back will thank you when the soaked cover weighs 80 pounds
3. Steps: a separate $100 to $300 line item, you’ll need them
4. Chemistry starter kit: $80 to $150 for the first round of bromine or chlorine
5. Annual maintenance: $200 to $500 in chemicals, filters, and water replacement

Add it up. The sticker price is rarely the all-in price. Budget another 15% to 25% for the install layer.

Hot Tub Buying Guide FAQ

Is a hot tub worth the money?

For most people who use it more than once a week, yes. The math is simple: amortize the all-in cost over 5 years and most owners land at $3 to $8 per use. Cheaper than your gym, cheaper than therapy. If you’ll use it twice a month, no, you bought a $5,000 lawn ornament.

What’s the difference between a hot tub and a Jacuzzi?

Jacuzzi is a brand. Hot tub is the category. Same thing as Kleenex vs tissue. People use the words interchangeably. Some Jacuzzi-brand tubs are excellent, some of their cheaper lines are middling. Don’t pay extra just because of the name on the side; check the model first.

Can I install a hot tub myself?

You can place it yourself if you have four strong friends and a tilt cart. You cannot wire it yourself unless you’re a licensed electrician. Most municipalities require a permit and inspection for the 50-amp or 60-amp circuit, and a self-wired tub voids the warranty on every major brand.

How long does a hot tub last?

Fifteen to twenty years for a quality brand with regular maintenance. The shell will outlive the pumps and heater by a decade. Plan to replace the heater once and the pumps once over the life of the tub.

Should I buy a saltwater hot tub?

Maybe. Saltwater hot tub systems are gentler on skin and need less day-to-day chemistry, but the cells cost $300 to $700 to replace every 1 to 3 years. If you have sensitive skin or hate handling chlorine, get one. If you’re a casual user, traditional bromine or chlorine is cheaper to own.

If you’re ready to start looking, the hot tub category page on Commonplace has filterable used inventory across all the major brands. And if you’ve already got one and you’re on the other side of this guide, our how to sell a hot tub post walks through pricing and pickup logistics. Or you can list it free in two minutes and let our drivers handle the rest.