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How Much Does It Cost to Run a Hot Tub?
5 minute read • Last update December 2024
Home hot tub installation may be the ultimate in relaxation and indulgence. After all, who wouldn’t want their own spa pool? But, as with many other luxury item purchases, hot tub use comes with additional expenditure that extends beyond the price tag. In this case, increased energy costs.
But precisely how much does it cost to run a hot tub? In this guide, we’ll break down all the key factors and provide a list of helpful tips for using less electricity so that the cost of running a hot tub remains manageable.
- How much energy does a hot tub use?
- What’s the monthly cost of hot tub ownership?
- What factors affect hot tub costs the most?
- How can you lower your hot tub electricity bill?
How much electricity does a hot tub use?
Do hot tubs use a lot of electricity? They can, but the impact on your monthly electric bill will vary depending on factors like hot tub size, model, and frequency of use.
When you use your hot tub, the water heater is the main culprit for energy consumption. A 120-volt heater can draw anywhere from 1,500 watts or more, while a 240-volt heater may use as much as 6,000 watts.
Your hot tub water pump can also contribute significantly, typically consuming around 1,500 watts to keep your system running. Altogether, electricity usage often falls between 3 kilowatt-hours (kWh) or 7.5 kWh, depending on the heater voltage.
Top tip: When calculating your hot tub electrical cost, remember that even when not in use, the heater runs intermittently to maintain the water temperature. This can add up quickly, especially if you keep the water at a higher setting.
How much does a hot tub cost per month?
The total cost of electricity to run a hot tub typically ranges between $30 and $100 per month. Now that we understand the energy required, let’s calculate your hot tub electricity cost more accurately with this simple two-step formula:
- Determine your electricity usage in kWh based on the voltage of your heater.
- Multiply the kWh by the rate shown on your electric bill (the average price per kWh in Texas is 15 cents).
This calculation provides a realistic estimate of your hot tub’s electricity cost. Keep in mind, though, that several factors—beyond electricity usage—can influence your hot tub’s monthly cost.
Factors impacting your cost
Of the many factors that influence your hot tub energy cost, some are easily controllable—like performing regular hot tub maintenance and avoiding exceeding the maximum recommended temperature. However, factors tied to your location and the specific features of your tub can be more challenging to offset. Let’s explore the essential aspects and see how they contribute to your overall cost.
Climate
If you asked homeowners in Dallas and Houston, “How much does it cost to heat a hot tub?” you might get very different answers. Why? It all comes down to climate. Running a hot tub in a cold climate uses more energy, as the heater must work harder to maintain the desired water temperature. Plus, you’ll likely use your hot tub more often in a colder climate, whereas living in a more temperate climate typically equates to less frequent use.
Hot tub size
Larger hot tubs hold more water, requiring more energy to heat. A good rule of thumb for estimating the water capacity of a hot tub is to start at 250 gallons per person and add an extra 25 gallons for each person as models go up in size—e.g., a 2-person hot tub holds around 250 gallons, a 4-person tub holds 300 gallons, a six-person tub holds 350 gallons, and so on.
Hot tub type
The material used can significantly impact your total hot tub cost per month. For example:
- Acrylic shells have good insulation, meaning they use less energy.
- Plastic tubs aren’t as well insulated, resulting in more electricity use and a higher energy bill.
- Wooden models are highly durable but require more maintenance time to remain energy efficient.
The cabinet (the exterior part of a hot tub) should not affect energy consumption, although it will affect the overall cost. For example, wood and synthetic wood are cheaper than stone or faux stone.
Hot tub installation and location
Placement can affect both your initial hot tub installation cost and ongoing expenses:
- In-ground tubs cost more to install and require more energy to heat due to the cooler temperature of the surrounding soil.
- Above-ground models are usually cheaper and easier to install but can still be affected by external temperature and insulation levels.
- Outdoor hot tubs are exposed to the elements so they use more energy to keep the water warm compared to indoor models.
For these reasons, it’s worth considering placement carefully, as this will have a lasting impact on your long-term energy usage. You may also want to consider installing privacy walls or a wind barrier of some kind to prevent windchill from removing heat from the tub.
Energy-efficient features
Most manufacturers provide guidance on setting temperature preferences, but not all hot tubs automate settings based on energy usage. Buying a new hot tub with energy efficiency technology like economy mode and timers will help you save money by reducing the amount of time your heater and pump are running.
Filtration system
The primary purpose of your filtration system is to keep the water clean, but filtration also affects the total cost of owning a hot tub. For example, outdated or underperforming filters may slowly increase your energy costs over time.
Hot tub cover and accessories
The total cost of running a hot tub depends on how you fit it out. Some accessories will save energy, whereas others will use more:
- Hot tub cover: Keeping your hot tub covered saves energy by preventing heat loss.
- Thermal blanket: Insulating covers are also excellent additions for reducing energy costs.
- Additional features: Air jets and extra lighting will consume more energy.
Selecting features and accessories that fit your budget and needs can make a significant difference over time.
Cost of maintenance
Every savvy hot tub owner knows that proper care is vital for a system that runs smoothly. Plus, being vigilant with regular maintenance could save you a few thousand dollars a year on breakdowns and pricey callouts. Here’s a list of the primary factors to consider.
Chemicals
Maintaining the proper chemical balance is crucial for ensuring that tub water remains clean and safe for use. The bigger your tub, the more chemicals and chemical additives you’ll need. On average, you can expect to spend between $20 to $50 per month on sanitizers, pH adjusters, and shock treatments.
Filters
A clean filter ensures optimal water circulation and prevents your pump from overworking. Hot tub filters should be replaced every 1 to 2 years, depending on the type of filter and your usage patterns. A high-quality filter can cost anywhere from $20 to $100.
Cleaning
Routine cleaning prevents debris buildup and helps extend the life of your hot tub. Basic cleaning supplies, like sponges and brushes, typically cost between $10 and $30. For deep cleaning, hiring a professional usually costs between $100 and $200 per session.
Water care
You should drain and refill your hot tub every 3 to 4 months. While this is a relatively low-cost task, the water bill can add up, especially if you have a large tub. Expect to pay around $20 to $40 every time.
Repairs
While you can handle routine maintenance, some hot tub repairs require a professional. For example, anything involving the electrical panel (even if it’s just changing a light bulb) should only be attempted by a licensed electrician. Costs will vary significantly depending on the severity of the issue.
Tips for lowering your hot tub costs
Looking for ways to lower your electricity bill? Check out these top tips for more efficient hot tub use:
- Avoid high-temperature settings: The higher the water temperature, the more energy you’ll use. Lower temperatures can lead to significant savings without sacrificing comfort.
- Upgrade to an energy-efficient model: Consider upgrading to a system with more energy-efficient features and components, such as ENERGY STAR-certified pumps.
As you can see, there are many factors you can control to lower your energy consumption and costs. So, while there’s no black-and-white answer to how much it costs to run a hot tub, there’s plenty you can do as a homeowner to protect yourself from unwanted surprises on your monthly electric bill.
Save on electricity plans with BKVE
Looking to save even more on energy costs? Then, it’s time to explore BKVE’s range of gimmick-free homeowner electricity plans.
We offer a range of plans tailored to your household’s energy usage, helping you enjoy your hot tub without worrying about skyrocketing energy bills. For example, our Bluebonnet plan helps many Texans save up to $800 annually.
Enter your zip code today to compare rates, find your perfect plan, and start saving on energy with BKVE.
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