The best Sauna heaters, compared.
Top pick: Caiqinlen 4.5 kW steam generator Best value: Mxmoonant 6 kW sauna heater – Best value: about £269.00, with the same 6 kW and 5–9 m³ band. The star line is 3.8 from 8, and a UK review reports a dent. Updated October 2026.
A sauna heater is one of three products: an electric stone stove for a dry sauna, a steam generator for a wet cabin or shower, or a wood stove for an outdoor tent. Match the listing’s type and the room band printed on that page to the room you are fitting. A 6 kW stone stove is about 26 A at 230 V, so it needs a dedicated circuit. None of these seven includes a 13 A lead, and stones are extra on the stone stoves. Those checks are in the [sauna heater buying guide](/hub/steam-baths/sauna-heater/sub/sauna-heater-buying-guide). An electric stone stove is for a dry cabin, with water poured on stones you buy separately. A steam generator heats water and sends vapour to a nozzle, for a wet room around the 25–55°C band printed on the steam listings. The wood stove here is the unit: 16 kg of stainless steel for an outdoor tent and for cooking, with a damper and a spark-arrestor claim.
A sauna heater is one of three products: an electric stone stove for a dry sauna, a steam generator for a wet cabin or shower, or a wood stove for an outdoor tent.
26 products checked · 64 hrs invested · +24,100 readers
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Personal buying guide
Question 1 of 2
What are you heating?
The Caiqinlen generator is listed at about £193.05 as a 4.5 kW, 220 V steam unit with a 35–55°C band, an LED display, and a 1–60 minute timer. The bullets also claim water-shortage protection, dry-burn prevention, and over-voltage protection, and they say the tank is about 20% larger than an ordinary tank. The size line is a package of 48.2 × 39.1 × 17.5 cm and 7.6 kg. No room volume and no material are printed. The listing tells elderly people, pregnant women, and people with heart disease, high blood pressure, or diabetes not to use it unless a physician guides them. amazon.co.uk shows 4.7 from 4 reviews. The only text says the price and that delivery was on time.
Pros
Cons
Best for: You are pricing a small steam shower, and you will confirm the room band, the material, and the drain from the manual before ordering.
Less suitable: You need a dry sauna, a stated cubic-metre band, or more than a two-word UK review.
Specifications
Common questions
Does the Caiqinlen generator switch itself off?
The bullets say it can shut down on a timer of 1–60 minutes and that it powers off when the temperature reaches a set height.
Can it be wall-mounted?
The listing says it can go on a wall or on the ground if the fixing is firm, and it describes two holes under the cover for wall screws.
What material is it made of?
The listing asks the question, and neither the bullets nor the technical details name a material.
The Mxmoonant WS-37-WJY is listed at about £297.00 as a 6 kW wall stove for a stated 5–9 m³, with digital time and temperature control. The body line is 48 × 34 × 57 cm and 13.56 kg. Stones of 18–20 kg and a plug are both stated as not included, and the notice asks for a licensed electrician because the heater is written for 215–240 V single-phase and 380–415 V three-phase. amazon.co.uk shows 4.4 from 8 reviews. One UK review says it heated quickly and that the timer switched the sauna off. A German review says the temperature sensor failed and the unit was returned. A French review says a 16 A supply stopped it after about five minutes and that a 32 A breaker with 6 mm² cable was used.
Pros
Cons
Best for: You are fitting a dry home sauna in the stated 5–9 m³ band, and you will hand the data plate and the wiring diagram to an electrician and buy stones separately.
Less suitable: You want a 13 A plug, stones in the box, or a single supply voltage already settled on the listing.
Specifications
Common questions
Does the Mxmoonant WS-37-WJY include sauna stones?
The notice says 18–20 kg of sauna stones are required and that the stones are not included. A review from France also says to buy about 20 kg extra.
Does this 6 kW heater come with a plug?
The notice says it does not come with a plug and that a licensed electrician should do the wiring. The same notice lists 215–240 V single-phase and 380–415 V three-phase.
What room size does the listing claim?
The bullets say the 6 kW heater is for sauna rooms of 170–300 ft³, written on the same line as 5–9 m³.
The CGOLDENWALL CNA 643D is listed at about £426.54 as a 4.5 kW steam generator for a stated 3–4.5 m³, with a 25–55°C touch controller and a timer from 30 minutes to 12 hours. The body is 35 × 18 × 24 cm and 12 kg, in stainless steel. The box list names a nozzle, a 10 m control cable, a 3 m probe, a drain valve, and a safety valve. The voltage field says 220 V and the pattern field says 380V. amazon.co.uk shows 4.0 from 6 reviews, and none of the three written reviews is from the United Kingdom. A German review describes about two years of weekly steam-shower use. An Italian review says the safety valve vented about 15 minutes after switch-off.
Pros
Cons
Best for: You are building a small wet room in the stated 3–4.5 m³, and you will match the data plate to the supply and plumb the drain.
Less suitable: You want a dry stone sauna, or a single voltage already settled on the listing.
Specifications
Common questions
What is in the CGOLDENWALL box?
The included-components line lists a steam generator, steam nozzle, 10 m control cable, 3 m temperature probe, LED digital controller, drain valve, and safety valve.
Which voltage does this generator use?
The voltage field says 220 volts and the pattern field says 380V. The listing does not resolve which supply the data plate is built for.
What temperature band is printed?
The title and bullets say 25–55°C. A Spain review describes a 4 m² steam room reaching 45 degrees in under 45 minutes.
The Anjur 39984 is listed at about £172.22 as a dry wall stove with knobs on the front, a timer capped at 3 hours, and a claimed 110°C. The title says 3–6 kW and the colour field says 4.5 kW, so the listing does not give one current to hand an electrician. The body is stated as 43 × 32 × 62 cm and 9.5 kg, and the bullets ask for 20 kg of stones that are not included. amazon.co.uk shows 4.0 from a single review, and that review text is not on the listing. Voltage is written as 220–240 V in the bullets and 220 V in the title, and a plug is not mentioned. The mounting line says about 18 cm from the ground. Hotel and spa appear in the title and are not a commercial rating.
Pros
Cons
Best for: You want a dry wall stove with a stated 3-hour timer, and you will confirm the data-plate kilowatts before any circuit is designed.
Less suitable: You need one kilowatt figure, a room band, or more than a single star rating before ordering.
Specifications
Common questions
Does the Anjur listing include sauna stones?
The bullets say this heater needs 20 kg of sauna stones and that the stones are not included.
How long can the timer run?
The listing says the timer starts after you set it and that the maximum working time is 3 hours.
Which power is this Anjur stove?
The title says 3–6 kW and the colour field says 4.5 kW. The listing does not give one data-plate figure.
The WILLOWYBE stove10 is listed at about £221.99 as a 16 kg stainless wood stove, 45 × 68 × 49 cm, for an outdoor sauna tent and for cooking. The bullets claim an adjustable damper, a viewing window, a foldable body, and a chimney cap that reduces sparks. There is no kilowatt figure and no plug. amazon.co.uk shows 3.9 from 164 reviews. Of the first 50 texts, two are from the United Kingdom and describe fast heat, outdoor cooking, and a heavy carry. Other reviews in that set, mostly from Canada and the United States, repeat a warped top plate, a grate that no longer accepts the ash tray, smoke from open seams, and a chimney joint that stopped drafting. One Canada review says it does not fold. The listing does not show a Defra exemption.
Pros
Cons
Best for: You want a portable wood stove for an outdoor tent, and you will keep the fire moderate and the flue outdoors.
Less suitable: You are fitting an indoor electric sauna, or you need a confirmed smoke-control exemption.
Specifications
Common questions
Is the WILLOWYBE stove an electric sauna heater?
No. The title is an outdoor wood stove for a sauna tent and for cooking. The technical line gives 16 kg and 45 × 68 × 49 cm, and no kilowatt or voltage figure.
Can it be used for cooking?
The bullets say it is suitable for cooking or drying gear. A UK review used the top for vegetables in foil and a side rack for a pot.
What do the reviews say about durability?
In the first 50 reviews, several people say the top plate, grate, or stone basket warped, and that smoke leaked after the seams or the chimney joint failed. Two UK reviews praise the heat and the steel.
The Mxmoonant WS-15-WJY is listed at about £269.00 as a 6 kW wall stove for the same stated 5–9 m³ band as the WS-37-WJY. The notice again says there is no plug, that both 215–240 V single-phase and 380–415 V three-phase are supported, and that 14–18 kg of stones are extra. The size line on the listing is a package of 59.5 × 47.5 × 36 cm and 12.86 kg, not a product-body measurement. amazon.co.uk shows 3.8 from 8 reviews, and the three written reviews on the listing are from the United Kingdom. They describe a fast heat-up and an install in under 20 minutes, and one describes a large dent in the casing.
Pros
Cons
Best for: You want the lower of the two 6 kW Mxmoonant shelf prices, and you will inspect the casing and confirm the circuit before use.
Less suitable: You need product-body dimensions on the listing, or stones and a plug in the box.
Specifications
Common questions
Does this Mxmoonant include a plug?
The notice says the heater does not come with a plug and that a licensed electrician should wire it. It lists 215–240 V single-phase and 380–415 V three-phase.
Are the sauna stones in the box?
The notice says 14–18 kg of stones are required and are not included. A UK review says rocks were not supplied and the buyer reused stones from an older heater.
What did UK reviews say about the casing?
One UK review says it heated quickly and was installed in under 20 minutes. Another says it arrived with a large dent and that the packing looked unmarked.
The Alvinlite heater is listed at about £123.49. The title says 6 kW, 220 V, stainless steel, and an internal controller for wet and dry use. The bullets say a thermostat holds the set temperature, that heat-up can take 30–60 minutes depending on room size, and that the back support frame is adjusted. They do not give cubic metres, a stone weight, a plug, a weight, or product dimensions. amazon.co.uk shows 3.5 from 4 reviews. One UK review says it had been used numerous times. The other says a corner was damaged and that there were no instructions.
Pros
Cons
Best for: You already have the manual and the room band from another source, and you are comparing this shelf price.
Less suitable: You need a cubic-metre band, a stone weight, or a wiring diagram before the electrician arrives.
Specifications
Common questions
Is the Alvinlite heater for a wet sauna or a dry sauna?
The title says wet and dry. The bullets do not give a stone weight or a separate steam-generator description.
Does the listing include a timer?
The bullets do not state a maximum time. They do say the room can take 30–60 minutes to reach the set temperature.
Did buyers receive instructions?
One UK review says there were no instructions while the buyer was wiring it, and that a corner arrived damaged. Another UK review says it had been used numerous times.
Seven amazon.co.uk listings, saved on 20 October 2026, were read against star rating and review count, whether the page states one type and one output, a room or temperature band, the supply or fuel, and what is missing. There is no laboratory test. A stated kilowatt figure is the listing claim. Approved Document P and BS 7671 section 703 are safety limits, not score points. A wood stove is scored as a wood stove. The top pick is the Mxmoonant WS-37-WJY at about £297.00, with one 6 kW figure, a 5–9 m³ band, and 4.4 from 8 reviews. Best value is the Mxmoonant WS-15-WJY at about £269.00, the same band, with 3.8 from 8 reviews and a dent already noted. In sentences this page says top pick and best value.
Amazon evidence
25%Star rating and review count on amazon.co.uk. Eight reviews is still a thin sample, so this block cannot reach its full weight. A listing with no review text scores low even if a star line exists. Reviews outside the United Kingdom are noted as such.
Listing fit
40%A clear type, one output figure, a room or temperature band, an explicit supply or fuel, a named control, and a plain statement of what is missing. A kilowatt range, a 220 V field next to 380 V, or package dimensions standing in for the body lose points.
Review outcome
20%A review that describes heat and a working control scores higher than a listing with no text. Damage on arrival, a missing manual, a failed sensor, a safety valve that opens after switch-off, and a warped stove body are deductions.
Value
15%Shelf price in GBP against a page an electrician or a tent user could start from. The lowest printed price does not win this block. The best-value award is the lower of the two 6 kW stone stoves that still state one power and a 5–9 m³ band.
Choose the type before the kilowatt headline. A sauna heater here is a stone stove, a steam generator, or an outdoor wood stove, and the seven amazon.co.uk listings saved on 20 October 2026 run from about £123.49 to about £426.54. Quality is a printed room band, one output figure, a supply you can show an electrician, and a plain line for what is missing. The top pick is the Mxmoonant WS-37-WJY at about £297.00, with a 5–9 m³ band and 4.4 from 8 reviews.
A sauna heater on amazon.co.uk in this set is one of three products. An electric stone stove is for a dry cabin, with water poured on stones you buy separately. A steam generator heats water and sends vapour to a nozzle, for a wet room around the 25–55°C band printed on the steam listings. The wood stove here is the WILLOWYBE unit: 16 kg of stainless steel for an outdoor tent and for cooking, with a damper and a spark-arrestor claim. Infrared cabins are outside this set.
A stone stove is for a dry sauna and water on stones. A steam generator is for a wet room around 25–55°C. The WILLOWYBE unit is a wood stove for an outdoor tent. Using one listing’s type for another room is the split this set is here to catch.
Harvia’s English guide adds 1.2 m³ for each square metre of glass or bare masonry, then asks you to sit near the middle of that heater’s own range. Only the two Mxmoonant stoves print 5–9 m³ here, and CGOLDENWALL prints 3–4.5 m³. Do not copy a Harvia band onto a marketplace listing that prints none.
Stones are extra on the stone stoves that name a weight. None of the seven includes a 13 A lead. A 6 kW stove is about 26 A at 230 V. The WILLOWYBE stove was not confirmed on the Defra smoke-exempt list. Keep that flue outdoors.
Type is the first cut. A stone stove, here the two Mxmoonant models, the Alvinlite, and the Anjur, is for a dry cabin. A steam generator, the CGOLDENWALL and the Caiqinlen, heats water for a nozzle. The WILLOWYBE is wood, for a tent. Infrared cabins are outside this set. The room band has to be the one printed on that listing. Harvia sizes an electric stone heater at about 1 kW per cubic metre and adds 1.2 m³ for each square metre of glass or bare masonry.
Watts divided by 230 is the shop method for amps. About 3 kW is the 13 A region. 4.5 kW is about 20 A. 6 kW is about 26 A, which SaunaShop treats as a dedicated circuit. In England and Wales a new circuit is notifiable under Approved Document P, and a sauna-heater room is a special location. BS 7671 section 703 keeps zone 1 to the heater. Zone 3 equipment must stand 125°C and cables 170°C, with IPX4 as the minimum.
Three typical situations, each with a recommendation from this comparison.
You are fitting an insulated home sauna and you can pay an electrician and buy stones. The Mxmoonant WS-37-WJY at about £297.00 is the top pick: one 6 kW figure, a stated 5–9 m³ band, digital control, and 18–20 kg of stones named as extra. amazon.co.uk shows 4.4 from 8 reviews. Single-phase and three-phase are both printed.
You want vapour around the printed 25–55°C band, not a 90°C stone stove. The CGOLDENWALL CNA 643D at about £426.54 is the steam kit in this set: a stated 3–4.5 m³, a nozzle, a drain valve, and a safety valve. amazon.co.uk shows 4.0 from 6 reviews. The voltage field says 220 V and the pattern field says 380V.
You want a wood stove for a garden tent and you will keep the flue outdoors. The WILLOWYBE stove10 at about £221.99 is 16 kg, with a damper and a spark-arrestor claim. amazon.co.uk shows 3.9 from 164 reviews. Reviews repeat warping and smoke leaks. It was not confirmed on the Defra smoke-exempt list.
The top pick is the Mxmoonant WS-37-WJY at about £297.00. It states one 6 kW figure, a 5–9 m³ band, digital control, a body of 48 × 34 × 57 cm, and 18–20 kg of stones as extra. amazon.co.uk shows 4.4 from 8 reviews. A UK review says the timer switched off. A German review reports a dead sensor. Both single-phase and three-phase are printed, and there is no plug. The best value is the Mxmoonant WS-15-WJY at about £269.00: the same 6 kW and 5–9 m³ band, 14–18 kg of stones extra, and 3.8 from 8 reviews, with a UK note of a dented casing and only package dimensions printed. None of these seven was metered, and none includes a 13 A lead.
Mxmoonant 6 kW sauna heater
Best value: about £269.00, with the same 6 kW and 5–9 m³ band. The star line is 3.8 from 8, and a UK review reports a dent.
Editorial
Heinrich W. is the editor for Leisure & sport at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources used for this comparison. Listing prices, stars and review counts are the amazon.co.uk figures saved for this set on 20 October 2026.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are the UK listing lines saved on 20 October 2026. We did not run a lab test.
