How Much Does It Cost to Run a Hot Tub? (2026 Guide)

It's the first question almost everyone asks before they take the plunge: how much does it cost to run a hot tub? The good news is that a modern hot tub costs far less than most people expect, and a few simple habits bring that number down even further.

How much does it cost to run a hot tub per month?

Three costs make up the total cost of owning a hot tub:

• Electricity – heating the water and holding temperature
• Filtration and water care – filters, chlorine, test strips
• Maintenance – the occasional drain, refill and clean

Electricity is by far the biggest, so let's start there.

Hot tub electricity cost

How much electricity a hot tub uses depends on its size, how well it's insulated, your preferred temperature, how often you use it, the weather and your local utility rate.

As a rough guide, with US electricity averaging around 17–18¢ per kWh, a hot tub used three or four times a week costs roughly $1–$3 a day, or $30–$90 a month. Expect the lower end in summer and the higher end through a cold winter – and less again if you're in a low-rate state.

Where that electricity goes:

• The heater – heating from cold is the biggest draw; once up to temperature it only tops up lost heat
• The pump and filtration – runs for hours a day but uses far less than heating
• The bubbles – pull cooler air through the water, so long bubble sessions kick the heater back on

Every Wave Spas hot tub is plug-and-play: it runs from a standard 120V outlet, so there's no electrician, no 240V wiring and no installation cost to add. Luxury you can afford.

Does the type of hot tub change the running cost?

Yes – and the difference comes down to insulation. The better a tub holds its heat, the less often the heater has to switch on.

• Inflatable hot tubs – the lightest and most affordable option. The air-filled walls offer some insulation, so expect running costs toward the upper end of the range in winter.
• Eco Foam hot tubs – solid, rigid foam walls hold heat far better than an inflatable, so the heater cycles less and running costs sit toward the lower end of the range. They also hold temperature better overnight and in windy, exposed spots.
• Frame hot tubs – a rigid frame and insulated walls deliver similar efficiency, with the look and feel of a traditional spa.

Whichever you choose, the saving habits below apply to all of them.

Hot tub maintenance cost

Much smaller than the electricity bill, and easy to budget for:

• Filters – rinse weekly, replace every few weeks of regular use. Typically under $100 a year.
• Chemicals and water care – chlorine or bromine, pH balancers and test strips come to around $15–$25 a month.
• Water changes – a few dollars in water every few months. Many owners take fewer baths, so it balances out.

All in, hot tub maintenance costs usually land in the $200–$400 a year range, with no annual service call to pay for.

How to lower your hot tub energy cost: 6 simple ways to save

1. Keep the cover on, every time – most heat escapes through the water surface. This is the single biggest saver.
2. Leave it on rather than switching off – holding temperature costs cents; reheating from cold costs dollars.
3. Turn it down a notch – 98–100°F instead of 104°F makes a real difference. Drop it further or switch off when you're away.
4. Find a sheltered spot – wind steals heat. A fence, wall or hedge on your patio or deck helps.
5. Insulate underneath – a ground mat stops heat seeping into a cold patio or concrete slab.
6. Go easy on the bubbles – enjoy them while you soak, switch off before you get out.

So, is a hot tub worth it?

Add it up and a well-cared-for hot tub typically costs $600–$1,500 a year to run in the US – with a well-insulated Eco Foam tub sitting toward the lower end of that. That's less than a coffee-shop latte a day for a spa-quality experience in your own backyard.

Our Waveflow™ filtration keeps the water crystal clear between changes, and FrostFree™ protection looks after your tub through the colder months, so you can unwind in style all year round.

Ready to bring the spa experience home? Explore the full Wave Spas range.

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