Learn how to heat up a hot tub faster and enjoy a relaxing soak in no time with these simple tips.
How Long Does a Hot Tub Take To Heat Up?
On average, it can take anywhere from 8 to 24 hours to heat up a spa bath. The time it takes to heat up a hot tub will largely depend on the efficiency of your hot tub’s water heater and insulation.
Factors that affects how long it takes to heat up a hot tub
- Size of the hot tub
- Type of heater
- Location
- Water temperature starting point
- Use of a thermal spa blanket
- Insulation of the hot tub
- Frequency of use
- Hot tub’s cover usage
- Maintenance of the heater
- Quality of the hot tub water
For a new hot tub owner or someone using their spa for the first time, it may take longer to get the perfect hot tub temperature.
Tips To Heat Up Your Spa Faster
Here’s how you can improve heat up your hot tub faster:
1. Proper Insulation

The hot tub’s insulation is crucial in retaining heat, reducing the time it takes to heat the water. Using a spa blanket as an insulated cover can significantly decrease the hours to heat your hot tub.
2. Keep the Cover On
Always keep the hot tub cover on when not in use to trap heat inside. This will speed up the process of heating your hot tub and make your hot tub heat faster.
The hot tub cover acts as an insulated spa blanket that traps the hot tub’s heat and helps it retain heat.
3. Use a High-Quality Heater

Invest in a high-quality heater for your hot tub that can heat up the water efficiently and quickly. This will reduce the time it takes to heat a hot tub and keep your hot tub running smoothly.
4. Maintain Proper Water Level
Keep the water level in your hot tub at the recommended level to ensure that the heater is working efficiently.
If you leave your hot tub running with the right amount of water, the heating process will be quicker. Always position your hot tub properly to optimize the heating.
5. Use a Thermal Blanket

Consider using a thermal blanket or floating cover on top of the water to help retain heat and reduce evaporation. This can impact how quickly your hot tub heats up, especially if the hot tub is located in a natural alcove.
6. Regular Maintenance
It is important to consider the hot tub maintenance and hot tub running costs when buying a hot tub. The bigger the hot tub model, the more gallons of water it will hold, meaning your hot tub will take less time to heat.
7. Preheat the Hot Tub

If you know you will be using the hot tub at a specific time, consider preheating it a few hours in advance. This will reduce the time it takes for the water to reach the desired temperature when you are ready to use it.
8. Keep It Covered and Cozy
To quickly heat up your hot tub, keep the heat inside by using a hot tub cover and a floating spa blanket. Also, use a floor protector to prevent heat loss and encourage faster heating.
9. Power Up with Jets and Heaters

Jets and heaters can help. Jets distribute heat evenly by stirring water around. Ensure all jets are underwater.
A powerful heater reduces waiting time, saves energy, and money. Upgrade to a better heater for quick warm-up and energy efficiency.
10. Clear Water Equals Quick Heat
Keeping your hot tub water clean is essential for a variety of reasons, including heating efficiency. The cleaner the water, the faster your hot tub will heat up.
Reminder
One more thing: Never fill your hot tub with super hot water straight away. This can be bad for your hot tub, possibly melting plastic parts or even cracking the shell.
Always start with the proper temperature water and let your hot tub’s heater do its job.