Let’s be honest, choosing a hot tub isn’t just about picking the prettiest one in the showroom. There’s the size, the seating, the jets… and then there’s the electrics. That’s the bit that tends to make people go a bit cross-eyed.
The big question many of our customers ask us is this: what’s the difference between a 13A and a 32A hot tub?
It’s a great question, and not as complex as it might first seem. Both options can deliver that warm, bubbling bliss you’re dreaming of, but there are some key differences under the surface that could make a real difference depending on your setup, preferences, and plans.
So, grab a cuppa, and let’s break it down.
First up: What exactly is a 13A hot tub?
You’ve probably heard them called “Plug & Play” hot tubs – and that’s pretty much the headline. A 13A hot tub runs off a standard three-pin plug socket, just like your kettle or toaster. Simple, right?
Well, mostly. While they’re brilliant for quick and easy installation, they do have some limitations that you’ll want to know about before diving in (not literally… let it heat up first).
The essentials:
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No need for a professional electrician (unless you need a socket installing).
- Plugs directly into an outdoor 13A socket – it must be weatherproof and have RCD protection.
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Typically features a single dual-speed pump and a 2kW heater.
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Can’t run jets and heater at the same time – it’s either bubbles or heat, not both.
In plain terms: if you’re using the jets, the heater takes a break. So, if you love long soak sessions with the bubbles blasting, you might notice the water cooling off a little over time, especially in winter.
But for more casual use or smaller groups? It’s a solid choice.
What about installation for a 13A tub?
Honestly, it’s pretty painless. You just need:
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A flat, solid base that can support the full weight of the tub and water.
- A weatherproof 13A socket, ideally no more than 1.5 to 2 metres from the tub.
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No extension leads. Seriously – just don’t. They’re a safety nightmare when mixed with water and power.
Many people get their Plug & Play tub up and running the same day it’s delivered. That’s part of the appeal. It’s almost instant spa gratification.
And if you change your mind later? Here’s the good news – at H2O Hot Tubs, all of our 13A models can be upgraded to 32A in the future. So, you’re not locked in.
So what’s a 32A hot tub, then?
If the 13A is convenience-focused, the 32A hot tub is all about performance.
These tubs pack more power, run more pumps, heat faster, and keep everything running simultaneously – even when the jets are working overtime. They’re often larger too, making them ideal for families, entertaining, or anyone serious about hydrotherapy.
Key things to know:
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Requires professional electrical installation – no DIYing this one.
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Needs a dedicated power supply from your consumer unit (fuse box).
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Runs on 6mm² 3-core SWA cable – that’s armoured stuff, made to cope with the British weather.
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Includes a rotary isolator switch, usually placed 2m or more from the tub for safety.
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Powers multiple pumps and a beefier 3kW heater.
Unlike a 13A model, with a 32A hot tub, the heater and pumps can run together. So you get the full works – heat, jets, lights, music – all at once, without compromise.
It’s like moving from a cosy hatchback to a luxury SUV.
What does installation look like for a 32A hot tub?
More involved, naturally – but worth it. You’ll need:
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A qualified electrician to handle the dedicated 32A circuit.
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Proper trenching if the cable’s going underground, or safe, secure routing if it’s surface-mounted.
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A clear plan for placement, with enough space around the hot tub for servicing and maintenance.
Installation might take a day or two depending on access and complexity, but once it’s done, you’re set for the long haul.
13A vs 32A hot tubs – How do they really compare?
| Feature | 13A Hot Tubs | 32A Hot Tubs |
|---|---|---|
| Power Source | Standard 3-pin plug (RCD socket required) | Dedicated 32A circuit from consumer unit |
| Heating & Jets Together? | No – one at a time | Yes – full functionality at once |
| Heater Size | 2kW | 3kW |
| Setup Requirements | Basic – no electrician if socket exists | Professional electrician essential |
| Performance | Modest – suited to casual use or smaller tubs | High – great for hydrotherapy or larger groups |
| Flexibility | Can be upgraded to 32A later | Already maxed out on performance |
A quick word on safety
This isn’t the fun bit, but it’s crucial. Water and electricity are not mates. So whether you’re going 13A or 32A:
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Never use an extension lead. Ever.
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Make sure outdoor sockets are RCD-protected.
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Use a qualified electrician for any permanent electrical work.
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Regularly check your cabling and connections for wear or damage.
We want your hot tub to be a source of calm, not chaos.
So… which one’s right for you?
Here’s the thing – there’s no universal answer. It depends entirely on how you’re planning to use your hot tub.
If you’re looking for something simple, cost-effective, and easy to install, a 13A hot tub might be just the ticket. Especially if you’re dipping your toe into spa life for the first time or have limited access to electrical work.
But if you’re after power, consistency, and the ability to run all the features without compromise? Then a 32A hot tub is where you want to be. They’re perfect for households who use their spa regularly, want the best performance, or just love a bit of luxury.
Choosing Between 13A vs 32A Hot Tubs – The Bottom Line
So there it is – the lowdown on 13A vs 32A hot tubs. Two great options, each with their own perks and considerations.
To sum it up:
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13A is about simplicity, speed, and flexibility.
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32A is about performance, power, and long-term enjoyment.
Whichever you choose, we’ve got models that deliver style, quality, and comfort in equal measure. And if you’re still unsure, talk to us. We’re always happy to help you work out what’ll suit your garden, your lifestyle, and your budget.
After all, a hot tub isn’t just a purchase. It’s an upgrade to your wellbeing.
