One of the most frequent questions hot tub owners ask is whether an electric heater can be used together with a wood- or pellet-fired stove for heating water. The answer is yes — and this hybrid solution is one of the most practical setups for many outdoor spa lovers.
Heating Options for Hot Tubs
There are multiple ways to heat your hot tub, depending on your lifestyle and setup:
Wood-fired stoves – the most authentic and natural heating method for traditional hot tubs.
Pellet-fired smart heaters – efficient and automated for modern users.
Gas heaters – powerful and quick to heat the water.
Electric heaters – clean, precise, and easy to operate.
Each method has its own benefits — but many owners discover that combining wood or pellet heating with electricity delivers the best results.
The Role of the Electric Heater
Electric heaters for hot tubs range from 3 kW to 18 kW. The size and power level determine whether it will be your main heating source or a temperature stabilizer:
- As a supplement: Smaller units (under 6 kW) maintain temperature once the water is heated by a wood or pellet stove.
- As the main heater: Larger models (6 kW and above) can work as the primary heating source for those who prefer low-maintenance operation.
The Convenience Factor
Wood-fired stoves offer a cozy, hands-on spa experience but require regular attention — adding logs, stirring water, and cleaning ashes. Water temperature can also fluctuate more than desired.
This is where the electric heater excels. With a built-in thermostat, it maintains a steady water temperature automatically, giving you more time to relax and less time adjusting or managing the fire.
The Best of Both Worlds
The most popular setup among hot tub enthusiasts is installing both a wood-fired stove and an electric heater. They work independently, giving you the freedom to choose how to heat your spa:
- Use the wood stove for that rustic, natural charm.
- Switch on the electric heater for quiet, automated, thermostat-controlled heating.
Some modern models even offer Wi-Fi connectivity, allowing you to heat the water remotely. Imagine coming home to a perfectly warm tub, ready to use!
For more maintenance and setup advice, see our related articles:
How to Fill and Empty a Hot Tub and
What to Know Before Owning a Hot Tub.
HowTo: Combine Electric and Wood/Pellet Heating
- Select your setup: Use a 3–6 kW heater to maintain heat, or 6–18 kW as your main source.
- Install separately: Keep the electric unit independent from the wood/pellet stove for flexible use.
- Start with wood or pellets: Heat water quickly using solid fuel for a natural start.
- Maintain temperature: Activate the electric heater to keep water steady without manual control.
- Switch at will: Enjoy traditional wood-fired ambiance or modern convenience — both options are always ready.
FAQ: Combining Electric and Wood/Pellet Heating
Can I use an electric heater together with a wood or pellet stove?
Yes, it’s safe and effective. Both systems operate independently, allowing you to pick your preferred heat source depending on mood or convenience.
What size electric heater should I choose?
Under 6 kW is perfect for maintaining warmth after wood heating, while 6 kW+ can be used as the main heater.
Why add an electric heater if I already have a stove?
Electric heaters ensure a consistent temperature without supervision, while wood or pellet stoves offer the authentic hot tub experience.
Can I automate my hot tub heating?
Yes, many modern electric heaters come with Wi-Fi control, so you can preheat your tub remotely or set automated temperature schedules.
Conclusion
Combining a wood or pellet-fired stove with an electric heater gives you the best of both worlds — the charm and efficiency of natural fire with the convenience and precision of modern automation. It’s an ideal setup for comfort, control, and ultimate relaxation.