A cheap inflatable or budget hot tub looks like a bargain next to a proper one. Sometimes it is the right buy. Often it is not, and the reason is running cost, not sticker price. We sell proper hot tubs, so we have a side, but we have been fair about the other one.
The short answer
An inflatable or budget tub costs less to buy and is easy to move. A proper insulated tub costs more up front but far less to run, holds heat through a British winter, lasts years longer, and gives a real massage rather than a tickle of bubbles. For one summer or the odd weekend, cheap is fine. For year-round use, the proper one is cheaper in the end.
| Cheap or inflatable tub | Proper hot tub (e.g. SB344S) | |
|---|---|---|
| Buy price | Low | From £4,499 |
| Running cost | High, poor insulation | Low, fully insulated |
| Winter use | Struggles below 4°C | Built for UK winters |
| Lifespan | 2 to 5 years | Years longer |
| Jets | Air bubbles, gentle | 24 water jets, hydrotherapy |
| Seating | Flat, no moulded seats | Contoured seats |
| Warranty | Short or none | 5 year frame, shell and more |
Why cheap tubs cost more to run
This is the part the low price hides. A thin vinyl or single-skin tub has almost no insulation, so the heater runs and runs to hold temperature. Independent guides put a poorly insulated tub at far more per month than a well-insulated one, and the gap widens in the cold. The SB344S is the opposite: full Sunbeach R10 insulation keeps the heat in the water instead of leaking into the garden. Over a year, that running-cost gap is often bigger than the difference in the price you paid.
Winter is where the gap shows
Most inflatable tubs are not recommended once it drops below about 4°C. The heater cannot keep up, heating slows to a crawl, and the material can suffer. For a lot of the UK year, that means the tub sits unused. A proper insulated tub holds temperature on the coldest nights, which is exactly when most people want to sit in one.
Bubbles are not jets
An inflatable tub massages with air, pushing bubbles up through the floor. It feels pleasant but does little, and the incoming air cools the water. A proper tub uses pressurised water jets. The SB344S has 24, driven by a Balboa system and aimed at the neck, back and legs. That is the difference between a warm fizz and a massage that reaches the knot in your shoulder.
What lasts, and what does not
A cheap tub is vulnerable where it matters. The liner is the weak point: a sharp toy, a pet claw or a few winters of UV and it splits, and most owners replace the whole unit rather than repair it. Realistic lifespan is two to five years. A proper tub is a rigid, insulated shell. The SB344S carries a 5 year frame warranty, 3 years on the shell against leaks, 3 years on components and 2 years on the surface: a manufacturer expecting it to still be here in a decade.
When a cheap tub is the right call
To be fair, an inflatable genuinely suits some people. For a single summer, a party, a rental you pack away, or just testing whether hot tub life is for you, a cheap one does the job. Nobody needs an insulated shell for three weekends in July. The trouble starts when people buy cheap expecting year-round use, then meet the running costs and the winter limits. If that is the plan, the proper tub is cheaper over time.
Why ours comes out on top
For year-round use, a proper tub wins on the numbers that matter after the sale: lower running cost, real winter performance, a proper massage and a lifespan in years not seasons. The SB344S is a WhatSpa Best Buy three years running, starts at £4,499, and comes with delivery, cover, steps and a starter chemical kit included.
FAQ
Are inflatable hot tubs cheaper to run than proper ones? No. They cost less to buy but usually more to run, because thin walls lose heat and the heater works harder. Over a year of regular use, a well-insulated tub is often cheaper overall.
How long does a cheap hot tub last? Most inflatable and budget tubs last two to five years. The liner is the weak point. A rigid insulated hot tub lasts far longer, which is why proper tubs come with multi-year warranties.
Is an inflatable hot tub ever the right choice? Yes, for occasional or summer-only use, for renting, or for trying hot tub life before committing. For year-round use it is usually a false economy.
See for yourself
Read our honest guide to what a hot tub costs to run, or see the SB344S from £4,499. Or come to the showroom and see the insulation and jets for yourself →
