How Much Does It Cost to Run a Sauna in NZ?

Ever wonder what it really costs to add a sauna to your home after the initial purchase? The good news is that most saunas are surprisingly affordable to run.

Each type works differently, so the running cost depends on how it heats up and how much power or fuel it needs.

The most common types of saunas are infrared, traditional (electric), and traditional (wood-fired). Here’s a breakdown of the running costs associated with each type.

What is Affecting the Running Costs of a Sauna?

There are multiple factors that will impact how much each Sauna session will cost you:

• Sauna type

• Session length

• How often you use it

• Power or wood costs

• Warm-up time

• Indoor or outdoor setup
  

Running Costs for Infrared Saunas

Infrared saunas warm your body using light-based heaters, so they don’t need extremely high temperatures. They use the least energy of all sauna types. Most infrared saunas fall between 1-2 kW, which is similar to running a small heater. A 1-2-person indoor infrared sauna will use less energy than larger options, but it’s not a significant difference. If you’re looking to keep your power bill low, infrared usually wins.

Average running cost: Around $0.30–$1.00 per session

Running Costs for Traditional Electric Saunas

Traditional electric saunas heat stones and warm the entire room. They also operate at higher temperatures. Most models use 4-6 kW of power to heat the stones. These saunas use stronger heaters, and the classic hot-stone steam experience naturally draws more energy. Even so, most homeowners find the running cost reasonable, especially if they enjoy that traditional, intense heat. Heating up a 1-4 person Electric Saunas will cost less than heating up a 5-8 person Electric Sauna, as the heater is more powerful.

Average running cost: Around $1.20-$3.00 per session

Running Costs for Wood-Fired Saunas

Wood-fired saunas don’t use electricity at all. Instead, you heat the sauna using firewood. The final cost depends on the type of wood you use and whether you buy it or already have your own supply. A larger option, like a 6-8 person cedar sauna, will require more firewood and a longer heat-up time, so your "per-session cost" will be a little higher.

Many people love wood-fired saunas because you can take them off-grid. There’s no electricity hookup required. They’re especially popular for outdoor areas or rural homes where firewood is readily accessible. If you live in a place where you get free firewood, your running costs are basically $0!!!

Average running cost: $0 if you have access to free firewood, otherwise about $2-$5 in firewood per session

Quick Comparison

You can get a better idea of how much it costs to run a sauna by comparing it to everyday appliances you already use. Most home saunas use 1-6 kW, depending on the type, which is similar to:

• Central air conditioning: 2-5 kWh per hour

• Clothes dryer: 2-3 kWh per load

• Dishwasher: about 1.5 kWh per load

What This Means for Your Sauna Costs

Running a sauna at home doesn’t have to be expensive. If you’re looking for a setup that fits your home and your budget, exploring a few different sauna styles is the best place to start.

Ready to bring a sauna into your home? Explore the full range at Alpine Spas and find the one that fits your lifestyle. If you are unsure or need help, please contact us or check out our Product Finder that will help you to find the right Sauna for you.

We also recommend checking out our sauna buying guide to learn more.

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visit Spa Supplies, New Zealand's favourite shop with everything for your spa pool or sauna! They have Chemicals, Filters, Parts and Accessories - all at incredibly low prices.