Outdoor Living Harmony Hot Tub
Slim at 1.0 m wide, so it fits a narrow garden or a quiet corner, with 21 jets, a built-in ozone generator and a Balboa control panel.
£2,599needs 3.05 × 1.8 m
Hot Tub Buying Guide: What to Check Before You Buy
Measure the garden first. Then choose the tub.
Five checks decide whether a hot tub is right for you: who it seats, the space around it, the base under it, the way in and the power supply. This guide puts all five on one garden plan, so the tub you pick is one that fits.
Outdoor Living Harmony is 2.25 × 1.0 m and seats 2 people. With 40 cm clear on every side it needs 3.05 × 1.8 m.
Outdoor Living Comfort is 2.1 × 1.55 m and seats 4 people. With 40 cm clear on every side it needs 2.9 × 2.35 m.
Outdoor Living Cove is 2.0 × 2.0 m and seats 4 adults and 3 children. With 40 cm clear on every side it needs 2.8 × 2.8 m.
Outdoor Living Sanctuary is 2.3 × 2.3 m and seats 7 people. With 40 cm clear on every side it needs 3.1 × 3.1 m.
Edge Kensington is 2.16 × 2.16 m and seats 6 people with a lounger. With 40 cm clear on every side it needs 2.96 × 2.96 m.
Drawn to scale in a 5.6 m by 4.4 m garden. Each grid square is 1 m.Choose the size by who gets in
Every tub lists how many people it seats. Count the people who will soak together most often and look for a tub that seats a couple more, so a full house is still comfortable.
Our own ranges start with the Outdoor Living Harmony, a slim two-seater at 2.25 m by 1.0 m, and reach the Outdoor Living Sanctuary, which seats seven in a 2.3 m square. The Cove is the family choice: it lists four adults and three children.1
Seat shape counts as much as the number. A lounger lets one person recline full length, while an all-seater layout puts everyone upright and facing in. The Edge Kensington has the lounger and seats six. Pick any tub on the plan and it is redrawn at the same scale.
Give it room all round
A hot tub needs more ground than it covers. The space plan on each of our tub pages keeps 40 cm clear on every side, so a 2.0 m Cove needs a 2.8 m square.1 That strip is where you step in, lift the cover and reach the side panels, and a clear side also lets an engineer get to the equipment.2
Mark it out before you order. Four pegs and a string, or chalk on the paving, at the sizes in the table below, will show you more than a tape measure can.
Put it on a level base that carries the weight
Water is heavy, because a litre weighs a kilo. The Cove weighs 261 kg empty and 1,451 kg filled, which is about 360 kg on every square metre of its footprint. The Edge Kensington comes to about 410 kg.1 Add the bathers on top.
The spec on our tub pages asks for a level surface that can bear the filled weight,1 and a flat, even surface is what makes a tub work properly.2 A concrete slab is the classic choice. Many people build a deck instead, and a structural engineer can check a deck or pad design against the load.3
If you are building a deck
A tub on a paved patio or slab is a straightforward job. For a raised deck or platform, permitted development in England asks for no more than 30 cm above the ground, with decking and outbuildings together covering no more than half the garden. Listed buildings and protected areas have their own limits, and your local planning authority can confirm the position for your address.4
Check the way in before you order
Walk the route from the road to the base. Allow a clear path at least 1 m wide and 2.4 m high,3 and measure the narrowest point: a gate, a side passage, an overhanging branch or a low gutter. Have that measurement to hand when you book delivery.
Steps and a handrail make getting in and out easier, and ours are in the hot tub steps and handrails collection. If you are deciding between the garden and a covered spot, our guide to where to install your hot tub compares them.
Plan the power supply with an electrician
Each tub page lists its power. The Comfort's maximum is 2.15 kW and the Edge Kensington's is 7.7 kW, so the figure to give your electrician depends on the tub you choose.1
The supply to the tub should be protected by a 30 mA RCD, a buried cable should lie at least 500 mm below the lowest ground level with marker tape above it, and a new circuit is notifiable work, so it is fitted by an electrician working under a competent person scheme.5 The plan shows the cable running from the house to the tub. Our hot tub electrical installation guide goes through it step by step.
Hot tubs that fit the plan
Five tubs from our own ranges, smallest to largest. Footprints are the tub itself, and the next row adds the 40 cm clear zone. Every price and spec here comes from the tub's page. For temperature, hot tub manufacturers' safety instructions say the water should never exceed 40°C,6 and our guide to what temperature a hot tub should be covers the settings.
| Measure | Harmony | Comfort | Cove | Sanctuary | Edge Kensington |
|---|---|---|---|---|---|
| Seats | 2 people | 4 people | 4 adults and 3 children | 7 people | 6 people with a lounger |
| Footprint | 2.25 × 1.0 m | 2.1 × 1.55 m | 2.0 × 2.0 m | 2.3 × 2.3 m | 2.16 × 2.16 m |
| With 40 cm clear | 3.05 × 1.8 m | 2.9 × 2.35 m | 2.8 × 2.8 m | 3.1 × 3.1 m | 2.96 × 2.96 m |
| Weight filled | 652 kg | 861 kg | 1,451 kg | 1,988.5 kg | 1,896 kg |
| Jets | 21 | 20 | 19 | 53 | 60 |
| Price | £2,599 | £2,899 | £3,999 | £6,499 | £7,999 |
Outdoor Living Comfort Hot Tub
A compact four-seater holding 645 litres, with 20 jets, ozone purification and a topside touch panel.
£2,899needs 2.9 × 2.35 m
Outdoor Living Cove Hot Tub
The family size: four adults and three children in a 2.0 m square, with 19 jets, built-in water fountains and Bluetooth audio.
£3,999needs 2.8 × 2.8 m
Outdoor Living Sanctuary Hot Tub
Seven seats in an all-seater layout, with 53 jets, three lights and Bluetooth audio, for a garden that entertains.
£6,499needs 3.1 × 3.1 m
Edge Kensington Hot Tub
Designed and manufactured by Outdoor Living, with a dedicated lounger, 60 jets, a touchscreen, built-in Wi-Fi and shell-mounted sound, in Dark Grey or Light Grey.
£7,999needs 2.96 × 2.96 m
Want a lounger in an Outdoor Living tub? The Outdoor Living Haven seats five in a 2.16 m square. The full Outdoor Living hot tub range and the wider range of hot tubs for sale have every size.
Know your rights before you pay
When you buy online, you can cancel up to 14 days after delivery.7 If you put any part of a purchase between £100.01 and £30,000 on a credit card, Section 75 makes the card provider jointly responsible if the tub is faulty or does not arrive.8 Both are worth knowing before you choose how to pay.
Once your tub is in, our hot tub safety guide and beginner's guide to hot tub maintenance cover the first things to know.
Quick answers
Open a question to read the answer.
How much space do I need for a hot tub?
The tub's own footprint plus 40 cm clear on every side. A 2.0 m square tub such as the Outdoor Living Cove needs a 2.8 m square, and the Outdoor Living Harmony, at 2.25 m by 1.0 m, needs 3.05 m by 1.8 m.
What size hot tub should I buy?
Count your regular bathers and choose a tub that seats a couple more. Two people suit the Outdoor Living Harmony, four suit the Comfort, and a bigger group suits the Cove or the Sanctuary.
How much does a hot tub cost?
The five tubs in this guide run from £2,599 for the Outdoor Living Harmony to £7,999 for the Edge Kensington. Our hot tubs collection has more models in between and above.
Do I need a concrete base for a hot tub?
A hot tub needs a level, firm surface that carries its filled weight, which is between about 650 kg and 2,000 kg for the tubs in this guide. A concrete slab is the classic choice, and a deck can work if it is built to carry the load.
Do I need planning permission for a hot tub deck?
If you build a raised deck or platform for the tub, permitted development in England allows it to be no more than 30 cm above the ground, with decking and outbuildings together covering no more than half the garden. Your local planning authority can confirm the position for your address.
Does a hot tub need a special electrical supply?
The supply to the tub should be protected by a 30 mA RCD and a buried cable should lie at least 500 mm deep. A new circuit is notifiable work, so it is fitted by an electrician working under a competent person scheme. Give them the power figure from the tub page.
What is the maximum temperature for a hot tub?
Hot tub manufacturers' safety instructions say the water should never exceed 40°C.
Sources
- Outdoor Living, hot tub product pages: dimensions, weights, seating, power and space-planning diagrams (Harmony, Comfort, Cove, Sanctuary, Edge Kensington), 2026
- Jacuzzi UK, How to prepare your garden space for hot tub installation
- Hydropool Hot Tubs, Hot tub specifications: your complete guide to the size, shape and weight of hot tubs
- Planning Portal, Decking: planning permission
- Institution of Engineering and Technology (IET), Domestic electrical supplies to hot tubs
- Hydropool Hot Tubs, Serenity hot tubs owner's manual (2024), important user safety instructions
- GOV.UK, Online and distance selling, updated 5 October 2026
- MoneySavingExpert, Section 75 refunds: are you covered and how to claim, updated 20 August 2026
Paul Margerison
Managing Director & Founder, Outdoor Living
Choosing a hot tub goes best when the garden is measured before the tub is picked. This guide puts the checks in the order that makes the decision simple.