Wood-fired hot tubs heat up faster, cost less to run on an ongoing basis, require no dedicated electrical supply, and deliver a more immersive outdoor experience. Electric hot tubs offer precise temperature control and convenient set-and-forget heat. For outdoor enthusiasts and off-grid setups, wood-fired wins. For frequent daily dipping, electric has the edge.
Picture the scene: it's a cold October evening, there's steam rising from the garden, and you're trying to decide whether you want a hot tub that practically runs itself — or one that rewards a bit of effort with something that actually feels like an event. That's the real question behind the wood fired hot tub vs electric hot tub debate, and it's worth taking seriously before you commit.
Both options have genuine merit. Both will get you into hot water (in the best possible sense). But they suit different people, different gardens, and different ideas of what a perfect evening looks like. In this guide, we'll compare them across the things that actually matter: running costs, installation, maintenance, temperature control, and the all-important question of vibe.
Wood-fired vs electric hot tub: a quick comparison
Heating and temperature control: hands-on vs hands-off
This is where the two options feel most different in practice.
An electric hot tub works like a sophisticated thermostat. With electric heating, an electric heater handles the heating process for you: set your temperature, close the lid, and it'll maintain the water temperature around the clock — ready whenever you are. That's genuinely useful if you want to jump in spontaneously after a run or a long day without planning anything in advance. Tubs with built-in controls and a heater are designed for consistent temperature control, though from cold they usually take 12–24 hours to heat depending on size. The trade-off is that it's always drawing power, even when nobody's using it.
A wood-fired hot tub, by contrast, uses a more hands-on heating method. You light the stove, feed it seasoned hardwood, and the water climbs steadily — typically reaching soaking temperature (around 38°C) in a few hours. According to Baltic Hot Tubs, wood-fired tubs can heat up around five times faster than their electric counterparts from cold, which is a significant practical advantage when you're not keeping the water constantly warm.
Temperature control is more manual — you're adding wood, adjusting airflow, and occasionally stirring the water to distribute heat, so keeping an even soak is harder than in electric tubs. It's a bit like keeping a car at 70mph without cruise control. Some people find that mildly fiddly. Many of our customers find it's half the fun — and a legitimate part of the wood fired hot tub vs electric spa conversation that tends to get glossed over.
The honest answer: electric is easier. Wood-fired is better.
Installation and location: what you actually need in the garden
This is often the deciding factor — and it's one where wood-fired genuinely has an advantage.
An electric hot tub typically needs a dedicated power supply. Depending on the model, that means a qualified electrician installing a 32-amp circuit, appropriate RCD protection, and safely routed cabling from your consumer unit. It's not insurmountable, but it adds cost and complexity before you've even filled the tub. Some "plug and play" models run on 13 amps, though these tend to be slower to heat and less powerful.
A wood-fired hot tub doesn't require mains power to heat the water at all. Wood-fired models also do not require electricity for their core operation, so they can be placed almost anywhere with suitable outdoor space and no electrical hookups. You'll want sensible positioning for the stove flue and adequate clearance from fencing or structures — and it's worth checking whether you're in a designated smoke control area — but there's no electrical infrastructure required for the core function. That makes wood-fired an ideal choice for rural gardens, decked spaces, holiday lets, glamping sites, and anyone exploring the idea of an off grid wood fired hot tub.
If your garden isn't near a convenient power supply, or you simply like the idea of a setup that doesn't depend on the grid, wood-fired is the more practical route. The power source matters here, and choosing between the two often depends on access to electricity and how often you'll use it. Wood-fired tubs are especially practical in remote locations and other off-grid settings, with no electricity needed to get started, while electric models require electricity.
You can browse our range of wood-fired hot tubs to get a sense of what works for different spaces.
Running costs: wood fired hot tub cost vs electric
Let's be honest about this, because there's a lot of vague noise online.
Electric hot tubs cost money to run whether you're using them or not. According to WhatSpa? (updated February 2026, using a UK electricity tariff of 27.69p/kWh), a typical electric hot tub costs between £65 and £90 per month to run — roughly £800 to £1,075 annually once you factor in electricity, servicing, and water care products. Even the most energy-efficient models on the market cost between £1.00 and £1.30 per day. That clock is always ticking.
Wood-fired running costs work differently. There's no standby energy draw — you only spend fuel when you're actually soaking. The main ongoing cost is firewood, which varies depending on how you source it. If you have access to seasoned logs at low cost, your per-session cost can be remarkably modest. Even buying kiln-dried hardwood bags adds up to a fraction of a typical monthly electricity bill over equivalent use.
A few things worth knowing:
- Dry, dense hardwoods (oak, ash, birch) burn most efficiently — wet or green wood is a false economy
- Your cover matters — hot tubs lose a significant proportion of their heat through the surface, so a well-fitted insulating cover makes a real difference for both types
- Cold nights and wind change the calculation — for either type, your environment affects running costs more than people expect
- The cheapest tub to run is the one you actually use properly — and a ritual you enjoy tends to get used more
Maintenance and reliability: fewer parts, fewer problems
Electric hot tubs are genuinely reliable — but they’re also equipped with filtration systems and more components. Pumps, heaters, control panels, jets, circulation systems. All of these can and occasionally do require attention. A typical annual service will cost between £150 and £200, and you'll need ongoing chemical treatments to support water hygiene throughout the year.
Wood-fired hot tubs are simpler by design. There's less tech, which can mean less maintenance in terms of complex parts, but the upkeep is more hands-on day to day. You're managing ash from the stove, keeping your wood supply dry and seasoned, and staying on top of water quality — but you're not dealing with control board failures or pump replacements in the same way.
Routine cleaning matters for both types, but electric tubs rely more on filtration systems to maintain water hygiene.
The wood fired hot tub pros and cons
Pros:
- No reliance on mains electricity for heating
- Faster heat-up time than electric from cold
- Lower ongoing running costs for moderate users
- Simpler system, longer lifespan (typically 10–15 years vs 5–10 for electric)
- Off-grid compatible
- Immersive outdoor experience
Cons:
- Temperature control requires more hands-on attention
- You need to plan ahead (no spontaneous midnight dips unless you've already heated it)
- Smoke/fume considerations and smoke control area regulations apply
- Requires a stock of dry, seasoned wood
The outdoor experience: something electric simply can't replicate
We'll be direct here. You can heat water any number of ways. But there's something about a fire-heated soak — the sound of a crackling fire, the smell of wood smoke, the slightly primal satisfaction of having earned your heat — that an electric tub's control panel just doesn't recreate.
At Vitru, we're built around the idea that recovery should connect you to the outdoors, not insulate you from it. Our wood-fired tubs are crafted from sustainably sourced timber, heated by fire, cooled by nature — and designed for people who take how they feel seriously, with a more natural experience and a more grounded bathing experience in mind. That philosophy doesn't mean electric is wrong. It means it's a different product for a different mindset.
If wellness for you means convenience and easy access to warm water for recovery, electric is excellent. If it means ritual, presence, and a more immersive natural experience, wood-fired is in a different category entirely.
So, which should you choose?
The key differences here are practical: the choice depends on how often you'll use the tub and where it will sit.
Choose electric if:
- You expect frequent use and want maximum convenience, so you can dip in spontaneously without advance planning; electric tubs are designed around easy, regular use, with extras like drinks holders sometimes part of the setup
- Precise, consistent temperature is important to you
- You have easy access to a suitable power supply
- You don't mind the ongoing electricity cost
Choose wood-fired if:
- You want an experience, not just hot water
- You're setting up in a rural location, cabin, glamping site, or anywhere off-grid
- You prefer a simpler system with fewer components to service
- You're happy to plan your soaks — and secretly enjoy the fire-lighting ritual
- You want a tub that connects you to the outdoors rather than adding to your electricity bill
Frequently asked questions
How long does a wood-fired hot tub take to heat up compared to an electric one?
A wood-fired hot tub typically heats from cold to around 38°C in two to three hours, depending on the stove, wood quality, and outdoor temperature. An electric hot tub maintained at temperature is ready immediately, but heating one from cold can take 12 to 15 hours. For users who don't keep their electric tub constantly warm, wood-fired is considerably faster.
Is a wood-fired hot tub cheaper to run than an electric hot tub in the UK?
For most moderate users, yes. Electric hot tubs cost between £65 and £90 per month on average in the UK (WhatSpa?, 2026), even when not in use, due to standby heating. A wood-fired hot tub has no standby energy cost — you only spend on firewood when you actually soak. Costs depend heavily on wood sourcing, but wood-fired is typically more economical for people soaking two to three times a week rather than daily.
Do you need an electrician to install a wood-fired hot tub?
Not for the heating element. Wood-fired hot tubs don't require a mains power supply to heat the water — the stove does that work. You may want an outdoor socket for lighting or a small circulation pump, but the core setup is far simpler electrically than a standard electric spa, which often requires a dedicated 32-amp circuit and professional installation.
Can you use a wood-fired hot tub off-grid?
Yes — this is one of wood-fired's biggest practical advantages. Because heating relies on firewood rather than electricity, a wood-fired hot tub is well suited to rural properties, cabins, glamping sites, and off-grid living. It's an entirely self-contained system for heating, with no dependency on mains power.
What maintenance does a wood-fired hot tub need?
Wood-fired tubs require less technical maintenance than electric models due to their simpler design. You'll need to manage ash from the stove, keep your wood supply dry and well-seasoned, and maintain water quality through regular testing and treatment. There are no pumps, heaters, or control panels to service in the way electric tubs require.
Which type of hot tub lasts longer?
Wood-fired hot tubs typically have a longer lifespan than electric models. A well-maintained cedar wood-fired tub can last 10 to 15 years, whereas a standard electric hot tub averages 5 to 10 years. The simpler construction of wood-fired tubs — with fewer electrical components — means there's less to degrade or fail over time.
Ready to find the right wood-fired hot tub for your space?
If this guide has nudged you towards wood-fired (and we wouldn't be surprised if it has), take a look at our full range — from compact cedar tubs perfect for a deck to larger stainless steel options built for serious outdoor use. There's a setup for every garden, every budget, and every idea of a perfect evening.