Hot Tub Buying Guide (UK)

Last updated: 1 February 2026

Buying a hot tub is half “which one do I like?” and half “will this actually work at my house?” This guide covers the practical stuff that affects satisfaction: seating, insulation, running costs, electrics, access, and delivery.

Step 1: Choose the right size (seats that you’ll actually use)

Most people overbuy capacity. A “6 seater” often means “6 people… if you’re friendly and don’t mind knees.”

A simple rule:

2–3 seats: couples / small patios / fastest heat-up
4–5 seats: most popular “family + friends” size
6–7+ seats: entertaining, but higher running costs and more space required

Also decide:

Lounger or no lounger? Loungers feel premium, but tall/short users sometimes float or don’t fit comfortably. If in doubt, go non-lounger or mixed seating.

Step 2: Insulation (this is what you’re really paying for)

Insulation drives running costs and winter performance.

Look for:

Full-foam or high-grade cabinet insulation
Well-insulated cover (thick, good seal)
Good shell + cabinet build (less heat loss, less vibration/noise)

If two tubs look similar but one is noticeably cheaper, insulation is often the hidden difference.

Step 3: Jets, pumps and “massage feel”

Bigger numbers aren’t always better. Jet count can be marketing fluff if the pumps can’t feed them properly.

What matters:

Pump quality and tuning (how it feels on your back)
Jet variety (targeted jets > 80 identical jets)
Air blower (more bubbles, but often noisier and can cool the water slightly)

Step 4: Filtration & water care (the “I don’t want a chemistry hobby” question)

You want water that stays clear without constant fiddling.

Typical options:

Cartridge filtration (common)
Ozone / UV assist (helps reduce workload but doesn’t replace sanitation)
Chlorine or bromine (the usual sanitisers)

The “easy life” combo is: good filtration + consistent sanitiser routine + a well-fitting cover.

Step 5: Running costs (the truth: it depends)

Running costs vary heavily by:

insulation quality
ambient temperature / wind exposure
how often you use it
target water temperature
energy price in your area

A heat pump can reduce running costs significantly for many setups (see our Heat Pump Guide).

Step 6: Electrics (UK)

Hot tubs typically require either:

13A plug-and-play (simple, but often lower heating performance and feature limits), or
Hardwired supply (common for larger tubs; requires a qualified electrician)

Always plan for:

RCD protection
Outdoor-rated isolation
A safe cable route (no trailing leads)

If you’re unsure, email us your shortlist and we’ll tell you what’s normal for each model.

Step 7: Delivery & access (don’t get caught by the boring physics)

Most large hot tubs are delivered by specialist freight (often kerbside/pallet as standard).

Check:

gate widths
steps
tight corners
gravel/soft ground
slope
distance from road to final spot

If access is tight, you may need upgraded placement or specialist handling. This is common and solvable — it just needs planning.

Step 8: Must-have accessories (buy once, cry never)

cover lifter (quality of life upgrade)
steps (stable, not wobbly)
starter water care kit (ask us what your tub prefers)
insulation base/positioning pads (depending on surface)

Common mistakes (so you can smugly avoid them)

buying for “maximum seats” instead of real usage
underestimating access route and delivery handling
choosing a tub with poor insulation (running cost regret)
skipping the site/base plan
ignoring noise/placement near neighbours

Next steps

Browse hot tubs:
https://www.steamandoak.co.uk/collections/hot-tubs-shop-all

Save money long-term (heat pumps):
Heat Pump collection: https://www.steamandoak.co.uk/collections/heat-pumps-shop-all
Heat Pump Buying Guide: https://www.steamandoak.co.uk/pages/heat-pump-buying-guide-for-hot-tubs

Understand delivery options:
https://www.steamandoak.co.uk/pages/delivery-installation

Need help choosing?

Email help@steamandoak.co.uk or call 03330 1515 33 (Mon–Fri, 9:00–17:00 UK).