Power your authentic Finnish steam sessions with the Harvia SW45 4.5kW Manual Wall Heater. Built from sleek black steel with space saving wall mounting and built in controls, it heats compact saunas up to 85°C quickly and reliably. The ultimate 4.5kW traditional upgrade for Australian homes. Please note: sauna stones sold separately.
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Traditional
Sauna
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Quality
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If you need any more information on electrical requirements see our dedicated electrical section in the FAQ.
20 Years Experience
Warranty
Harvia Manual Black Wall Heater 4.5kW - SW45
Small Saunas
(1-2 Person Models)
2 – 4.5 m³
Xenio Digital Panel*
Simplicity & Value
Compact Wall Mount
12kg
15 Amp
Small Saunas
(1-2 Person Models)
2 – 4.5 m³
Built-in Dials
Simplicity & Value
Compact Wall Mount
12kg
15 Amp
Small / Medium Traditional Saunas (1- 4P Models)
3 – 6 m³
Xenio Digital Panel*
Reliable Value
Slim Wall Mount
20kg
20 Amp
Small / Medium Traditional Saunas (1- 4P Models)
3 – 6 m³
Built-in Dials
Precision & Smart Tech
Slim Wall Mount
20kg
20 Amp
Medium / Large Traditional Saunas (3- 8P Models)
5 – 8 m³
Xenio Digital Panel*
Reliable Value
Slim Wall Mount
20kg
32 Amp
Medium / Large Traditional Saunas (3- 8P Models)
5 – 8 m³
Built-in Dials
Precision & Smart Tech
Slim Wall Mount
20kg
32 Amp
Premium / Large Saunas (3-8 Person Models)
6 – 10 m³
Built-in Dials
Reliable Value
Slim Wall Mount
20kg
37.5 Amp
Large / Premium Cabins (3-8 Person Models)
6 – 10 m³
Xenio Digital Panel*
Luxury & Soft Steam
Floor Standing Pillar
80kg (Massive Heat Retention)
32 Amp
Lower CVD mortality at 4–7 sessions/week vs once weekly
Lower all cause mortality at the same frequency
Lower risk of sudden cardiac death
Adults tracked, mean age 63, 20+ year follow up
The Harvia SW45 4.5kW Manual Black Wall Heater delivers an authentic, high performance traditional Finnish sauna experience directly into compact Australian residential homes, pairing master Scandinavian craftsmanship with space saving wall mounted architecture.
Engineered specifically to heat smaller sauna rooms between 3 and 6 cubic metres, this 4500W heating unit rapidly warms the cabin up to 85°C to create dense, revitalising steam and deep physical restoration without encroaching on valuable bench space.
Designed to hold up to 20kg of high density sauna stones (sold separately) for optimal thermal retention and balanced convective heat distribution, the heater features intuitive, illuminated manual control switches integrated directly onto the base of the heater body for simple, reliable adjustment of your session timer and operating temperature without the need for external wall consoles.
Finished in a durable, heat resistant black steel casing and hardwired by a licensed electrician on a dedicated 220 to 240V single phase circuit drawing 18.8 Amps, the Harvia SW45 offers an ideal blend of compact Nordic engineering, energy efficient performance, and a two year warranty for your daily wellness ritual.
Please Note:
This product is sold without sauna stones, which are essential for proper operation and steam generation. For optimal performance and longevity, we recommend using 20kg of Harvia Vulcanite Sauna Stones. Specifically selected for electric sauna heaters, these high-density stones ensure even heat distribution and reliable thermal retention, enhancing your sauna experience from the very first session. Available separately
Improved
Cardiovascular Health
Pain Relief for
Sore Muscles
Detoxification
Through Sweat
Improved Sleep
Quality
REAL PEOPLE, REAL RESULTS
Loving our Revel Virta 2 person sauna so far (about 2 months since we bought it). I'm using it about 3-4 times a week right now. It looks great, is lit very nicely, is comfortable for 2 people and heats up pretty quickly. Being right next to our pool and a cold shower I get the benefit of rapid temperature change too.
I have used my fair share of saunas and this is by far one of the simplest ones yet. Effortless and such a great design! Wish I had invested sooner… thanks for the customer service team for being so easy to deal with. I can’t wait to purchase my ice bath next!
I love my sauna and use it 4 or more times per week. Still using it and it hasn’t lost its appeal even after 12 months. The sauna is still performing perfectly.
One downside is that I bought the 4 person sauna and it isn’t long enough to lie flat on the bench and if I had to purchase again I would get the 8 person size.
Also read the fine print. You do need 25 Amp power to the heater which needs to be installed by an electrician and buried 60cm which for me was more costly than expected as it required cutting through a section of concrete driveway.
I still love my sauna and would definitely buy it or a bigger one again if I ever move house.
I couldn’t be happier with my Revel Sauna! The quality is excellent - easy to assemble and it delivers an amazing sauna experience. What truly sets Revel Saunas apart though, is their customer support. From pre-purchase questions to warranty claims, their support team (Vanessa) was responsive, knowledgeable, and genuinely helpful every step of the way. I highly recommend both the product and the people behind it!
Loving my sauna so far! It’s easy to use, super comfortable - I’m excited to get up in the morning and have my sauna time. A perfect size for fitting in my spare bedroom, and it looks great too.
Use this as a cool and warm tub daily and sleep so much better.
We love our setup from Revel, to deal with the team has been professional and a pleasure and on point. Nothing was too hard, from start of the process to install and setup. We are now looking after our selves and already noticing improvements and benefits in our life! Playing sport and keeping fit at my age, takes its toll, to have these benefits at home great reduces recovery time and helps my body, mind and mental preparation. Thanks to the team at Revel
Apart from the aesthetics, the Duo Ice Bath is the perfect addition to my Sauna routine and allows me to use the Sauna in the summer months when I'm heating the pool. Very happy with the Revel Ice Bath and would highly recommend!
By far the best purchase I’ve ever made! The setup is extremely easy and the performance of the unit is even better. Has made me feel better than ever! I sleep so much better and the added benefit of weight loss has made this a daily routine for me! Couldn’t recommend higher.
I absolutely love the Revel Glacier Duo Ice Bath! It has become a staple in my daily recovery routine, and the quality is unmatched. I typically use it in combination with my Revel Aura Infrared Sauna, doing 3-minute cold plunges at 4°C between 20-minute sauna sessions. This contrast therapy has worked wonders for my recovery and overall well-being.
The design of the Glacier Duo is sleek, and the temperature control is incredibly precise, which makes it easy to get that perfect chill every time. It’s also spacious enough for a comfortable plunge but compact enough to fit seamlessly in my space.
For anyone serious about recovery or simply wanting to add cold exposure to their health routine, the Glacier Duo is hands down one of the best investments you can make. Highly recommended!
The Revel Aura has been a total game changer for my recovery routine, especially after a long day at work. I also got the glacier duo cold plunge for contrast therapy...it’s a quick, effective way to reset. I usually do 20 minutes in the sauna followed by 3 minutes in the ice bath, repeating the cycle a couple of times and makes my recovery and sleep so good!
It heats up fast, and the full-spectrum infrared feels amazing. It's helped reduce my muscle soreness and stress after hard workout days. If you're looking for a convenient way to improve recovery at home, this setup is so good!
I have had this Sauna about a month, it's amazing !! I have used it nearly daily!!
Both my wife & I both fit in the Sauna together!! The product is very well finished & we are extremely happy with it!!
This has been a great purchase
From the advice on phone which will suit my needs, delivery was easy and also replacing a small damaged stand was flawless. Assembly very simple and the product when up and running has been such a big part of my daily routine and for the rest of my family too.
Super happy with its performance , I highly recommend revel on all levels.
We've been getting plenty of use from our new traditional sauna. It was quite easy to set up, it looks great, and I was suprised how hot it can get. Very happy with it, wish we got it sooner.
The best investment for our health. Works really well. Heats up quickly. Plenty of room. It’s finite.
