Key Takeaways:
- Energy Range: A typical hot tub uses between 100–300 kWh monthly, depending on size, usage, and insulation.
- Cost Control: Small adjustments like using a quality cover and smart heating schedule can reduce monthly energy costs significantly.
- Long-Term Value: Choosing an energy-efficient model pays off over time through lower electricity bills and improved temperature retention.
Soaking in a hot tub at the end of a long day is one of life’s simplest pleasures. But for many people considering one, the big question is: how much will it add to the monthly electric bill? With rising energy costs, it’s natural to want a clear understanding of how much electricity a hot tub uses, and what you can do to manage that usage. While the answer varies depending on the size of the unit, how often it’s used, and how well it’s maintained, there are simple ways to keep costs reasonable without compromising on comfort.
At AquaRest Spas, we’ve helped thousands of households enjoy the benefits of hot tub ownership with models that are thoughtfully engineered for energy efficiency. From full-foam insulation to Eco-Flow™ pumps, every design detail supports performance and reliability — all while keeping monthly electricity use in check. Our hot tubs are proudly made in the USA, and we’re trusted by families across the country who want quality, comfort, and value in one durable spa.
In this piece, we’ll be discussing how much electricity a hot tub uses per month, the factors that influence energy consumption, and how to choose a spa that fits your lifestyle and energy goals.
What Affects Hot Tub Electricity Use?
Hot tub electricity use depends on a few key factors that work together to determine how much power your spa actually consumes each month.
1. Hot Tub Size And Capacity
Larger hot tubs generally require more energy to heat and maintain water temperature. A 4 person hot tub, for example, will naturally use more electricity than a compact 2 person hot tub due to the higher volume of water and greater number of jets.
2. Frequency Of Use
The more often you use your hot tub, the more energy it will need to reheat and power the jets. Daily use will consume more electricity compared to occasional weekend soaking.
3. Ambient Temperature And Climate
Outdoor temperatures play a major role. If your hot tub is exposed to cold weather, the heater will work harder to keep the water warm — especially in winter months.
4. Insulation And Hot Tub Cover Quality
A well-insulated spa paired with a high-quality hot tub cover helps retain heat and minimize energy loss. Poor insulation allows heat to escape, increasing electricity usage.
5. Heater And Pump Efficiency
The age and quality of the internal components matter. Modern hot tubs with energy-efficient pumps and heaters use less electricity than older or lower-end models.
6. Maintenance And Water Care
Dirty filters, unbalanced water chemistry, and neglected maintenance can force the system to work harder than necessary, increasing power consumption over time.
How Many kWh Does A Hot Tub Use Per Month?
On average, a hot tub uses between 100 to 300 kilowatt-hours (kWh) per month. However, this range depends on the factors mentioned earlier — like size, usage, and insulation.
Let’s break that down a little:
- Smaller, well-insulated hot tubs may use around 100–150 kWh monthly.
- Mid-size models, like a typical 4-person unit, might fall in the 150–250 kWh range.
- Larger or older hot tubs, especially those with less efficient components, can easily exceed 300 kWh per month.
To give a real-world example:
If your electricity rate is $0.13 per kWh, a hot tub using 200 kWh per month would add around $26 to your monthly utility bill.
Some newer models are designed with built-in energy-saving systems. For instance, well-insulated cabinets, programmable heaters, and eco-friendly circulation pumps can significantly lower monthly hot tub power usage.
Calculating Your Hot Tub Monthly Electric Bill
Understanding your hot tub’s energy cost is easier when you know your local electricity rate and the average power usage of your unit.
Here’s a simple way to calculate your hot tub monthly electric bill:
Step 1: Estimate Monthly kWh Usage
Use your hot tub’s specs or average estimates:
- Energy-efficient models: ~100–150 kWh/month
- Standard models: ~200–300 kWh/month
Step 2: Find Your Local Electricity Rate
This is typically listed on your utility bill, often in cents per kWh (e.g., $0.13/kWh in many U.S. states).
Step 3: Multiply
Let’s say your hot tub uses 220 kWh/month, and your rate is $0.15/kWh:
220 kWh × $0.15 = $33 per month
This number will vary depending on the season, frequency of use, and whether you're using features like lights or high-powered jets regularly.
If you’re considering adding a spa to your home, it’s helpful to factor this into your total cost of ownership. You can also explore our breakdown of how much does a hot tub cost to plan ahead.
Tips To Lower Your Hot Tub Electricity Cost
Even though hot tubs use electricity consistently, there are a few smart ways to reduce your monthly power bill without sacrificing comfort.
Use An Energy-Efficient Hot Tub
Modern spas are designed with insulation, efficient heaters, and programmable controls. Choosing an energy efficient hot tub helps minimize energy waste from the start.
Keep The Water Covered
Heat loss is one of the biggest reasons for increased power usage. Using a durable, insulated hot tub cover traps heat and reduces the amount of energy needed to maintain temperature, especially in colder climates.
Set A Sensible Water Temperature
Every degree higher increases energy use. Most users find 100–102°F comfortable. Lowering the temperature by even a few degrees when the tub isn’t in use can make a noticeable difference over time.
Optimize Your Heating Schedule
Use a timer or smart control system to heat the spa during off-peak energy hours or shortly before use, instead of running it at full temperature all day.
Maintain Filters And Water Quality
Clean filters and balanced water chemistry keep the system running efficiently. A clogged filter forces the pump to work harder, which raises energy consumption.
Block Wind And Insulate The Cabinet
If your spa is outdoors, shielding it from wind with privacy panels or fencing can reduce heat loss. Some owners also add extra insulation around the cabinet to lock in warmth.
How Hot Tub Features Impact Electricity Use
Not all hot tubs are built the same. The features you choose can directly influence how much electricity your spa uses. Add-ons like waterfalls, LED lighting, or powerful massage jets can enhance the experience. However, they may also increase power demand when in use.
For instance, high-powered jet systems draw more electricity when activated. Built-in lighting systems, especially older ones, can add to your energy usage if used frequently at night. On the other hand, features like ozone or UV water purification systems help keep water clean with less reliance on the main pump. This can reduce energy use over time.
It’s about finding the right balance. Choosing features that match your habits, along with energy-conscious design, lets you enjoy your spa while keeping electricity costs under control.
Are Energy Efficient Hot Tubs Worth It?
Yes, energy efficient hot tubs are absolutely worth considering if you're looking to reduce long-term operating costs and lower your environmental impact.
Lower Monthly Energy Bills
While energy efficient models may have a slightly higher upfront cost, they often pay for themselves over time. With advanced insulation, smart pumps, and controlled heating systems, these hot tubs typically use significantly less power each month compared to older or less efficient designs.
Better Temperature Retention
One of the biggest advantages is heat retention. Energy efficient hot tubs hold heat longer, so the heater doesn’t have to work as hard — especially when paired with a well-fitted cover.
Environmentally Friendly Use
By consuming less electricity, these spas help reduce your overall carbon footprint. For eco-conscious users, that’s a clear benefit without giving up comfort.
Long-Term Value
If you're planning to enjoy your spa for several years, energy savings can really add up. And for many homeowners, this ongoing reduction in cost makes it easier to justify an upgrade or investment in a new model.
When shopping for an hot tub for sale, energy performance should be part of the decision — not just features and appearance.
Choosing The Right Hot Tub For Your Energy Needs
Finding the right hot tub means balancing size, features, and energy performance to match your lifestyle and budget. Here’s what to consider when energy use is a top priority:
- Match the Size to Your Usage: Larger tubs hold more water and use more energy. If you're not hosting regularly, a smaller model like a 2 person hot tub could be a better fit. It heats up faster and uses less power to maintain the temperature.
- Look for Full-Foam Insulation: High-quality insulation is one of the biggest factors in reducing heat loss. Full-foam models retain warmth better and protect plumbing in colder climates.
- Prioritize Smart Controls and Efficient Pumps: A good circulation pump keeps the water clean with minimal energy use. Add smart controls or a programmable timer, and you’ll reduce run time and avoid unnecessary heating cycles.
- Don’t Overlook the Cover: A properly fitting, insulated cover makes a big difference. A basic cover may save money upfront, but a premium option can significantly reduce ongoing heating costs. If your current one is worn or letting out steam, consider upgrading your hot tub cover.
- Research Energy Ratings and Specs: Check the manufacturer's documentation for energy consumption details. Some brands, like AquaRest Spas, design their models specifically with energy conservation in mind.
Whether you're looking for a small backyard retreat or a spacious social spa, choosing a hot tub that aligns with your energy goals will give you peace of mind — and a lower bill.
Final Thoughts
Hot tubs offer a relaxing escape, but it’s natural to wonder, how much electricity does a hot tub use, and what does that mean for your monthly budget. The good news is that with the right model, setup, and maintenance habits, keeping your spa energy-efficient is completely achievable.
Most hot tub owners spend between $20 and $50 per month on electricity, depending on usage and the unit's design. By understanding factors like insulation, heater performance, and water care, you can make smart choices that reduce your hot tub electricity cost without giving up comfort.
If you're shopping for your first spa or considering an upgrade, energy efficiency should be part of the conversation. From compact 2-person models to a family-sized 4 person hot tub, the right fit is out there — and designed to perform well without high monthly costs.
Browse our full selection of hot tubs for sale to explore energy-smart options built for real-world use.
Frequently Asked Questions About How Much Electricity Does A Hot Tub Use
Does a hot tub use more electricity in winter?
Yes, hot tubs generally consume more electricity during colder months because the heater has to work harder to maintain water temperature in low outdoor temperatures.
Can I run my hot tub on solar power?
Yes, but you’ll need a properly sized solar system with battery storage. While solar can offset energy costs, the initial setup can be complex and costly.
Does using the jets increase electricity usage?
Yes, but only slightly and only while they’re running. The bigger impact on energy use comes from heating and maintaining water temperature.
Should I turn off my hot tub when not in use to save electricity?
Not necessarily. Frequently turning it off and reheating can use more power than maintaining a steady temperature with a well-insulated cover.
Can I reduce hot tub energy use with a floating thermal blanket?
Yes, a floating thermal blanket adds another layer of insulation and helps reduce heat loss, especially during long gaps between use.
Are 110v plug-and-play hot tubs more energy efficient?
They often draw less power but may run longer to reach and maintain temperature. Their overall efficiency depends on insulation and heater design.
Will a hot tub increase my home’s electric panel load?
Yes. Most hot tubs require a dedicated circuit, and higher-voltage models (220v) may need an upgraded electrical panel to handle the extra load.
Does hard water affect energy usage in a hot tub?
It can. Mineral buildup on heating elements reduces efficiency, making it harder for the system to heat water. Regular descaling helps prevent this.
How do I know if my hot tub is losing heat too fast?
If the heater runs often, or you notice a quick temperature drop after uncovering it, your spa may be under-insulated or the cover may need replacing.
Is it cheaper to run a hot tub continuously or on a schedule?
Running it continuously at a slightly lower temp is often more efficient than cycling it off and reheating frequently, especially in colder climates.
