§ Five-Person · Plug & Play · 13 A Standard Socket

The Cornwall

Five seats, 18 jets, 70 individual nozzles — the most-jetted spa in our patio range, in a 198 × 198 cm square that plugs into a standard 13 A socket. Aqua AI on board to schedule heating and filtration around your usage. No electrician. No project — a level patio, slab or deck is all it needs.

5.0 Verified owner reviews Read below →
£4,999 £5,999 Save £1,000
Price includes VAT · Free kerbside delivery to mainland UK
1-Year Warranty
UK Stock
Free Kerbside Delivery
Pay in instalments
Delivery & Install
Included · Kerbside
£4,999£5,999
01
13 A Plug & Play Standard UK socket · no electrician needed
02
18 Jets · 2 HP Stainless steel · air venturi adjustable
03
Seats 5 198 × 198 cm square · 700 L
04
Year-Round Triple-layer insulation · UV + ozone
The Finish
One specification · no options
White shell · black cabinet · black cover

One finish, chosen deliberately — the standard patio-spa finish across our range. Plain white acrylic shell, black maintenance-free composite cabinet, black 3″→2″ hardtop locking winter-rated cover. The white shell hides calcium waterline so you're not wiping the tub down every week, and the black cabinet and cover read as a single low-profile object that sits cleanly in most British gardens. Read the reasoning →

01 · POWER 13 A Plug-In Standard outdoor socket · no electrician
02 · WARRANTY 12 Months · All-In Parts, labour & shell · no annual service needed
03 · LEAD TIME 2–4 Weeks Kerbside 2–3 wks · install 3–4 wks
18 JETS · 2 HP 13 A PLUG & PLAY SEATS 4 198 × 198 CM FOOTPRINT MOUNTAIN PURE™ UV + OZONE 50 FT² GLACIER FILTER MULTI-COLOUR LED AROMATHERAPY CANISTER BALBOA DIGITAL CONTROLS BLACK CABINET + COVER SINCE 1977 18 JETS · 2 HP 13 A PLUG & PLAY SEATS 4 198 × 198 CM FOOTPRINT MOUNTAIN PURE™ UV + OZONE 50 FT² GLACIER FILTER MULTI-COLOUR LED AROMATHERAPY CANISTER BALBOA DIGITAL CONTROLS BLACK CABINET + COVER SINCE 1977
§ 01 · THE CORNWALL

Five seats.
70 nozzles.
One 13 A plug.

The Cornwall is the most-jetted spa in our patio range — eighteen jets totalling seventy individual nozzles, split across four 3″ rotary jets (14 nozzles each) and fourteen 2″ directional jets, all driven by the same two-speed 2 HP pump that powers every other patio spa. Five contoured seats around a 198 × 198 cm square shell. 13 A plug-and-play — no electrician, no consumer-unit upgrade, no Part P certification. Same engineering as the bigger acrylic tubs, sized to plug into a standard UK socket.

And the new bit: Aqua AI. Onboard smart-diagnostics built into the Balboa BP200 control pack — it monitors the heater, pump and filtration cycles, flags issues before they become call-outs, and learns your usage pattern to schedule heating and filter cycles around when you actually use the tub. It's not a gimmick: it's a real reduction in standby energy waste, which is where most of a hot tub's running cost comes from.

Same patio-spa family as the Manitoba (4-seat rectangle), Okanagan (4-seat round) and Muskoka (6-seat square) — identical Balboa controls, identical Mountain Pure™ UV + ozone sanitation, identical 12-month all-in warranty, identical 13 A plug-and-play install. The differences: Cornwall is the biggest patio footprint we make (198 × 198 cm), the only one with black cabinet, the only one with Aqua AI, and the only one with the 70-nozzle delivery. If five seats and the most jets in the range are what you're after, this is the one.

§ 02 · Engineered In Detail

Every feature earning its place.

The Cornwall is a full-spec five-person hot tub in plug-and-play form. Same Balboa controls, same triple-layer insulation, same year-round build as the acrylic 32 A tubs in our range — but moulded into a 198 × 198 cm square that runs off a standard 13 A socket. Plus Aqua AI scheduling on board: the only spa in our patio range with it.

01 · POWER
13A
Plug & Play

Plugs straight into a standard 13 A outdoor socket — the same one you'd use for a strimmer or pressure washer. No electrician, no consumer-unit upgrade, no Part P certification, no waiting. Position it on a level base, plug it in, fill it from the hose. You'll be in the water on day one.

02 · HYDROTHERAPY
70nozzles
18 Jets · 70 Nozzles · 2 HP

Eighteen jets totalling seventy individual nozzle exits — four large 3″ rotary jets with 14 nozzles each, plus fourteen 2″ directional jets — driven by a two-speed 2 HP pump. Air venturi valves at the rim let you dial each jet's air injection up or down, tuning the massage from a firm soak to a deep-tissue hit. The most jets in our patio range.

03 · SANITATION
UV+O₃
Mountain Pure™ — UV + Ozone

The Mountain Pure™ sanitation system combines a UV-C lamp with a built-in ozone generator. Water passes the UV-C bulb where the short-wavelength light disrupts bacteria and viruses at cell level, while the ozone generator oxidises organics before they reach the filter. Two sanitation stages working together mean the cleanest water with the fewest chemicals — kinder on skin and eyes, easier on the filter, and a meaningful step up from the chlorine-only sanitation you'll find in most plug-and-play spas at this price point.

04 · FILTRATION
50ft²
Glacier Antimicrobial

A 50 ft² Glacier antimicrobial filter sits in a gated weir, threaded for a secure seal. Antimicrobial media inhibits bacterial growth on the filter itself for the life of the cartridge. Sized to match the 700 L water volume — turns over the whole tub in minutes, not hours.

05 · HEAT RETENTION
2kW
Triple-Layer Insulation

A 2 kW Balboa heater (less than a kettle at peak draw) keeps the water at temperature. Triple-layer insulation with infra-red reflection and high-density closed-cell foam holds it there, and the 3″→2″ tapered hardtop cover locks the heat in overnight. A modest water volume plus serious insulation = among the cheapest spas in our range to run.

06 · CONTROLS
BP
Balboa Digital Pad

A digital Balboa control panel adjusts jets, temperature and lighting with a single touch — wet-handed, no menus to navigate. The same control system used across our six-and-seven seat tubs, scaled for one panel instead of two.

07 · MOOD LIGHTING
LEDmulti-colour
Under-Lit After Dark

Multi-coloured LED mood lighting washes across the plain white shell — pick the colour that suits the evening, or let it cycle. Paired with an integrated aromatherapy canister for the small details that make the soak feel like an event, not a utility.

08 · NEW · AQUA AI
AIsmart
Adaptive Filtration & Diagnostics

Onboard smart-diagnostics built into the Balboa BP200 control pack. Aqua AI monitors heater, pump and filtration health and flags issues before they become call-outs; it also learns your usage pattern and schedules heating and filter cycles around when you actually use the tub. Standby cycling is where most of a hot tub's electricity bill comes from — Aqua AI cuts that without you having to think about it. Cornwall is the only spa in our patio range with this onboard.

§ 03 · The Finish

Why we only
do one colour.

Most hot tub brands offer four or five shell colours. We offer one — a plain white shell paired with a black cabinet and black hardtop cover, the standard finish across the entire patio-spa range. It isn't a compromise. It's the answer we arrived at after years of watching owners live with their spas.

01

No weekly wipe-down.

Calcium builds up at the waterline on every hot tub — that's just hot water chemistry. On dark shells, you see it. You end up wiping the tub down on a regular basis to keep it looking respectable. On our plain white, the calcium is still there, but it disappears into the finish. Most people buy a hot tub to take away their stress, not to give themselves a part-time job wiping it down. That's the main reason we landed on white.

02

The lighting comes alive at night.

The multi-coloured LED mood lighting was designed to wash colour across the shell. A plain white interior picks up and carries every hue. On a dark shell, the lights just sit there. On this one, they paint the whole tub — and the black cabinet frames it cleanly against the garden.

03

Built to sit with garden furniture.

The black cabinet and black hardtop cover read as a single monolithic object — clean, low-profile, and easy to site in most British gardens. It's not trying to be a feature. It's trying to blend in.

§ 04 · Seating Layout

Five seats.
Seventy nozzles.

The Cornwall is laid out for five adults around a 198 × 198 cm square — five contoured perimeter seats, no lounger, no captain's chair. Standard patio-spa simplicity in the biggest patio footprint we make, with the most jets in the patio range.

  • 01 / FIVE PERIMETER SEATS
    Five Around A Square

    Five contoured perimeter seats around a 198 × 198 cm square shell — deep enough to sit with your shoulders under the waterline, with proper shoulder room for a 6'2" adult on every seat. Designed for five-up family use without anyone perching on a ledge.

  • 02 / 18 JETS · 70 NOZZLES
    4 × 3″ Rotary + 14 × 2″ Directional

    Eighteen jets distributed across the five seats: four large 3″ rotary jets with 14 nozzles each deliver the deep, broad-coverage massage at neck and lumbar zones; fourteen 2″ directional jets cover targeted points at shoulders, calves and footwell. Total 70 individual water exit points — the highest count in our patio range. Air venturi valves at the rim let each seat tune its own air injection without affecting the others.

  • 03 / 2 HP TWO-SPEED PUMP
    Balanced Delivery Across All 18 Jets

    A single two-speed 2 HP pump drives all 18 jets on our WhiteWater™ Jet Delivery System — low speed for filtration and ambient circulation, high speed for the full hydrotherapy hit. Oversized pipework inside the shell keeps pressure even across the five seats; Aqua AI in the Balboa BP200 schedules filtration around your usage pattern to cut standby cycling.

— A note on fit

The Cornwall comfortably seats five adults up to about 6'2" around a 198 × 198 cm square footprint. Step up within the patio-spa line if you need a sixth seat: the Muskoka (6-person square, 14 jets, 188 × 188 cm) is the six-seat patio sibling — same 13 A plug-and-play, fewer jets but one more seat. Step down if four seats is enough and you'd rather a smaller footprint: the Manitoba (4-person rectangle) and Okanagan (4-person round) are both compact patio spas. Step up to acrylic if you want 44+ jets, dual pumps and a lounger: the London SE is our flagship — but that's a 32 A hardwired install with Part P and a reinforced concrete pad. Not sure? Book a showroom visit — ten minutes from Gatwick — and sit in them all.

What's in the box.

  • Cornwall patio spa (198 × 198 × 73 cm · 18 jets / 70 nozzles · 2 HP two-speed pump)
  • Hardtop 3″→2″ tapered locking insulating cover (winter-rated)
  • Mountain Pure™ UV + ozone sanitation (UV-C lamp + built-in ozone generator)
  • 1 × 50 ft² Glacier antimicrobial filter (installed)
  • 2 kW Balboa heater + Balboa BP200 control pack with TP500S digital panel
  • Aqua AI smart-diagnostics + adaptive filtration scheduling
  • Multi-coloured LED mood lighting
  • Aromatherapy canister system
  • Air venturi valves for per-jet pressure
  • 13 A UK plug with in-line RCD — plug-and-play, no electrician required
  • Free kerbside delivery to mainland UK
Added with installation package or available separately
  • Black plastic step
  • Chemical starter kit
§ 05 · Technical Specification

The full numbers.

Nothing approximate. These are the figures our engineers work from.

01 Dimensions & Capacity

Size
198 × 198 × 73 cm (78″ × 78″ × 29″)
Seating
5 adults · five contoured perimeter seats around a square
Water capacity
700 litres (185 US gal)
Dry weight
200 kg (440 lbs)
Filled weight
900 kg (1,984 lbs)
Shell material
Acrylic · plain white
Cabinet
Maintenance-free composite · black
SKU
KH-10202

02 Power & Hydrotherapy

Jets
18 jets · 4 × 3″ rotary (14 nozzles each) + 14 × 2″ directional · 70 nozzle exits total
Pumps
1 × 2 HP · two-speed massage pump
Heater
2 kW Balboa stainless steel
Controls
Balboa BP200 control pack · TP500S digital topside panel
Smart system
Aqua AI · adaptive filtration scheduling + onboard diagnostics
Massage zones
Air venturi adjustable per jet
Electrics
13 A standard UK socket · plug-and-play

03 Water Care & Sanitation

Sanitation
Mountain Pure™ · UV-C lamp + ozone generator
Filter (installed)
1 × 50 ft² Glacier antimicrobial cartridge
Antimicrobial agent
Silver ion · lifetime of filter
Filter housing
Gated weir · threaded cartridge
Filter replacement
Every 4–6 months recommended
Foam core
High-density closed-cell
Base required
Flat & level · slabs, decking or 3–4″ concrete pad

04 Comfort & Finish

Lighting
Multi-coloured LED mood lighting
Air controls
Air venturi valves · per-jet pressure
Aromatherapy
Scent-cartridge diffuser · integrated
Insulation
Triple-layer · IR reflection · thermal transfer blocks
Heat reclamation
ThermalSprings™ · pump waste heat to water
Cover
Hardtop 3″→2″ tapered · winter-rated · locking straps · neutral
Warranty
12 months · parts, labour & shell (all-in) · UK-wide
Warranty rationale
Patio Spa tier — same as our portable spas
Warranty · extendable
+2 years for £500 · stackable
§ 06 · The Warranty

12 months standard.
Parts, labour, shell.

The thing most brands don't tell you: many hot tub warranties require a paid annual service from the manufacturer to stay active. Miss one, warranty voided. We don't work that way.

Standard · Included
12 Months · All-In
  • Parts, labour and shell — one 12-month cover
  • Pumps, heater, control system and acrylic body
  • UK-wide coverage from our Surrey base
  • No annual service required to keep active
Why 12, not 24
Price-Point Parity
  • Same 12-month warranty as our portable spas
  • Not a build-quality cut — a price-point trade-off
  • The easy cuts were frilly extras (waterfall, premium LED)
  • Acrylic hot tubs get 2yr parts + 10yr shell — different tier
Optional · Extend
+2 Years · £500
  • Covers electronic components and labour to fit
  • Purchasable at any point while still under warranty
  • Stackable — buy it twice for four extra years
  • Patio Spa tier — £850 on our acrylic tubs, £1,200 on Swim Spas
Add Extended Cover →
— A note on service: An annual service is a good idea for the longevity of any spa. With us, it's a recommendation, not a warranty condition.
§ 07 · Customer Reviews

What Cornwall owners
actually say.

5.0
★★★★★
Verified owner reviews

Verified owner reviews from our Judge.me-powered reviews app render below — published verbatim, we don't edit, curate or hide them. If you own a Cornwall, we'd genuinely like to hear how it's going.

Direct-fit accessories

Parts that fit this Hot Tub

§ 08 · Before You Buy

Questions worth asking.

Can I get the Cornwall in another colour?

We only ship one finish: a plain white shell with a black cabinet and black hardtop cover — the standard patio-spa finish across our range. It's a deliberate decision — the white shell hides waterline calcium that you'd otherwise be wiping off a dark shell every week, and the multi-coloured LED mood lighting reads cleanly against the black cabinet at night.

Our flagship acrylic ranges (London SE, Erie SE, Alberta SE, Kingston SE) ship with dark brown cabinets. The Niagara is the only one with a brown cover. Cornwall and the rest of the patio spas are black across the board.

What's included in delivery and how long will it take?

Option 1 · Free kerbside delivery to mainland UK. Kerbside on the Cornwall goes via our pallet network rather than our own flatbed — it arrives on a Luton-style van with a tail-lift, and the driver drops it at the kerb at your delivery address. We can't force the pallet company to do more than kerbside, though most drivers are pretty helpful if you're nice to them.

You'll need a wheeled furniture dolly on the day plus 2–3 able-bodied people to take the spa down the side path. At 200 kg it's not dissimilar to moving a big fridge from one house to another. Most customers hire a dolly from a builders' merchant — here's the kind of thing to look for at Brandon Hire Station. And here's a video of our Saskatoon model being moved on a dolly — similar size, shows you exactly how it's done.

Option 2 · Back Garden Install +£799. If you have the base, the electrics and the access sorted, we'll come out on our own flat-bed truck, flip the spa on its side like a built-up wardrobe onto our wheeled dolly, take it down the side path to its final spot and lower it onto the base. If your hose reaches, we'll start the fill; we assemble the accessories, walk you through how to use the spa and the chemicals, and by the time we leave the spa is heating up — you can jump in within 24 hours.

Honest recommendation for this spa: seriously consider the kerbside option. You may curse us halfway down the side path, but it really is like moving a fridge — and saving £799 is definitely worthwhile on a spa this size. Pick install if access is tight, you're short on willing helpers, or you'd simply rather not deal with the day.

Current lead times: allow 2–3 weeks for kerbside and 3–4 weeks for Back Garden Install. These are cautious estimates — we're normally faster, and we'll confirm a firm date once your order is in. Scottish Highlands quotable on request.

How do the filters work, and when do they need replacing?

Your Cornwall arrives with a 50 ft² Glacier antimicrobial filter already installed and ready to go in a gated weir. The filter media is infused with silver ions — a natural antimicrobial agent that inhibits bacterial growth on the filter itself for the full life of the cartridge. Paired with the UV-C lamp and built-in ozone generator, it keeps water clean with minimal chemical intervention.

Replacement schedule: we recommend replacing the Glacier filter every 4–6 months, or sooner if it looks discoloured or worn.

A good trick: keep two filters on rotation, so you can pop a clean one in while you soak and rinse the used one overnight.

Will it fit me if I'm tall?

The Cornwall comfortably fits five adults up to about 6'2" — five contoured perimeter seats around a 198 × 198 cm square shell. At 198 cm wall-to-wall there's real legroom from any seat, and the depth gives proper shoulder coverage that a smaller patio spa can't.

If you regularly host six or more, or everyone's 6'3"+, the natural step up within the patio range is the Muskoka (6-person square, same 13 A plug-and-play). For 44+ jets and a lounger, step up to acrylic — the London SE (square 6-person with a lounger, 32 A hardwired) or the Vancouver UV. Come and sit in all of them at our Redhill showroom — it's the only way to know for certain.

Who is the Cornwall for?

Three groups buy the Cornwall:

Five-up family households who don't want a 32 A project. Couple plus three kids, couple plus two regular friends, four-or-five-up sociable groups. Five seats around a 198 × 198 cm square — a real social tub, plugged into a 13 A socket. Most 5-seat tubs are scaled-down acrylic six-seaters that need a 32 A supply, Part P certification and an electrician on site. The Cornwall is the plug-and-play exception.

Buyers who want Aqua AI on a patio spa. The Cornwall is the only spa in our patio range with the Balboa BP200 control pack and Aqua AI scheduling onboard — adaptive filtration that cycles around when you actually use the tub, instead of running on a fixed schedule 24/7. Standby cycling is where most of a hot tub's electricity bill comes from, so the bill saving is real over a year of ownership.

Buyers who want the most jets in the patio range. 18 jets totalling 70 individual nozzles — including four 3″ rotary jets that are usually only found on acrylic tubs. If hydrotherapy intensity matters more than seat count, this is the patio spa for you.

Do I need an annual service to keep the warranty active?

No. The Cornwall's 12-month all-in warranty runs from the date of delivery with no mandatory annual service. Some brands require a paid manufacturer service every year to keep cover active — miss one, warranty voided. We think that's a tax, not a condition.

That said: an annual service is still a good idea for the long-term health of any spa. It's a recommendation we'll happily make — it's just not tied to your cover.

What does the warranty actually cover?

12 months, all-in. Parts, labour and shell — a single 12-month cover from the date of delivery, UK-wide. If something fails in normal use during that window, we replace the part and fit it, anywhere in the UK.

Why 12 months instead of the 2-year parts + 10-year shell cover on our acrylic hot tubs? Price-point, not build quality. The Cornwall isn't built to any lesser standard — but to hit the patio-spa price point, something had to give. The easy cuts were the frilly extras (retractable Bluetooth speakers, LED-backlit cascading waterfall, Aurora™ premium LED package). The harder but necessary cut was the warranty length.

It's the same 12-month warranty you'll find on our portable spas — so if you came in looking at a portable and stretched to a patio spa instead, you get a significantly better-built spa (acrylic shell, Balboa controls, Mountain Pure™ sanitation, triple-layer insulation) on the same warranty terms. The acrylic hot tub range (London SE, Erie SE, Alberta SE, Kingston SE, Niagara) sits above on the 2yr + 10yr tier.

You can extend it. Add +2 years of parts and labour cover for £500 (Patio Spa tier — the acrylic hot tubs are £850, Swim Spas £1,200). The extension is stackable — buy it twice for four extra years — and can be purchased at any point while still under warranty. See the Extended Warranty listing.

What electrical supply do I need?

A standard outdoor 13 A socket — the kind you'd plug a strimmer or pressure washer into. The Cornwall ships with a 3 m UK plug-and-play cable fitted with an in-line RCD safety breaker as standard.

That's it. No electrician callout, no consumer-unit upgrade, no rotary isolator, no Part P certification, no waiting. If you've got a weatherproof outdoor socket within 3 m of where the spa will sit, you're ready to fill it on day one. (If you don't, an electrician can fit one in an hour or so — but it's a one-off five-minute job for them, not a spa-specific install.)

The 13 A plug-and-play format also means nothing is hard-wired in — if you move house, drain the tub and the spa can come with you (you'll want a HIAB or four-strong lift crew at 198 × 198 cm and 200 kg dry, but no electrician disconnection or recommissioning).

What base does the Cornwall need to sit on?

A flat, level, load-bearing surface at least 198 × 198 cm. Filled, the Cornwall weighs about 900 kg (1,984 lbs) spread across that footprint — well within the load capacity of:

  • Existing patio slabs (provided they're level and bedded properly)
  • A solid timber decking platform with adequate joists
  • A 3–4″ concrete pad (or equivalent) if you want to start from scratch — just needs to cover the spa's footprint and be roughly level

At 900 kg filled, the Cornwall is the heaviest patio spa we make — slabs and decking still work, but they need to be properly bedded and joisted (no loose paving over sand). If you're starting from scratch, a 3–4″ reinforced concrete pad is the gold-standard option. Either way, the single most important thing is that the base is flat and level; an uneven base puts uneven stress on the shell over time.

How much does the Cornwall cost to run?

The Cornwall is among the cheaper-to-run patio spas in our range, and it has a unique trick: Aqua AI. The Balboa BP200 control pack learns your usage pattern and schedules heating and filtration around the times you actually use the tub — instead of cycling at fixed intervals 24/7. Standby cycling is where most of a hot tub's electricity bill comes from, so this matters.

Helping things along: a modest 700 L water volume (holds heat more efficiently than a 1,250 L six-seater), a 2 kW Balboa heater that pulls less than a kettle at peak draw, triple-layer insulation with infra-red reflection that holds the temperature once it's up, and the winter-rated 3″→2″ hardtop cover with locking straps to keep the heat in overnight.

Real-world costs depend on your tariff, how often you soak, and how disciplined you are with the cover — most UK owners on this size of spa report £45–£65 a month across the year. A lot less than the larger six-seaters in our range, which sit closer to £60–£75/month, and a step below the Manitoba/Muskoka thanks to Aqua AI.

Speak to the team on 01293 824 094 for a more specific estimate against your tariff.

Is it actually usable all year round?

Yes. The Cornwall is built for year-round outdoor use — acrylic shell, triple-layer insulation, and a heat-trapping winter-rated cover with locking straps. Many owners say a soak on a cold, clear night is the single best argument for owning one.

What's included in the price?

As standard you get the spa with its 3″→2″ hardtop locking winter-rated cover, Mountain Pure™ UV + ozone sanitation, installed 50 ft² Glacier antimicrobial filter, 2 kW Balboa heater and digital control panel, multi-coloured LED mood lighting, integrated aromatherapy canister, air venturi valves for per-jet pressure, the 13 A UK plug-and-play cable with in-line RCD, all manuals, and free kerbside delivery to mainland UK.

Add the Back Garden Install (+£799) and we'll also include a plastic step and a chemical starter kit — and we'll bring the spa down the side path on our dolly, position it on the base, start the fill, and walk you through the chemicals on the day. (Cover lifter isn't part of the garden install — it's available separately if you'd like one.)

No electrical kit needed — the spa plugs straight into a standard outdoor 13 A socket.

Can I see it in person?

Yes — please do. Our showroom is at Canada House, Unit 1, Salbrook Road, Redhill, Surrey · RH1 5GL. Ten minutes from Gatwick. Open Monday to Friday 9am–6pm and weekends 10am–4pm. No appointment needed, but booking means we'll try to have the Cornwall available to view for you when you arrive.

§ Ready When You Are

A real hot tub. No project.

Order the Cornwall online for free kerbside delivery to mainland UK — plug it into a 13 A socket and you're in the water on day one. Or come and sit in one at our Redhill showroom · ten minutes from Gatwick.

Book A Showroom Visit →