Wood-fired hot tubs have become increasingly popular for people who want a natural, off-grid way to relax outdoors. One of the most common questions people ask before buying one is:
“How long does a wood-fired hot tub take to heat up?”
The answer depends on a few factors, but in most cases a wood-fired hot tub can reach a comfortable temperature in 1.5 to 3 hours.
At Maden Eco Fuels, we help customers get the most from their outdoor tubs by using the right firewood and heating techniques.
Average Heating Time
Most wood-fired hot tubs will heat from cold water to around 38–40°C in approximately:
- 1.5–2 hours in warm weather
- 2–3 hours in cooler conditions
If the tub is already partially warm, heating time can be much quicker.
The key factor affecting heating time is the type and quality of firewood used.
Why Firewood Quality Matters
Using dry, high-quality logs makes a huge difference when heating a hot tub.
Kiln-dried logs produce:
- More heat
- Less smoke
- Faster heating times
Wet or poorly seasoned wood burns inefficiently, meaning you’ll need more logs and the tub will take much longer to reach temperature.
For best results, always use logs with moisture content below 20%.
Tips to Heat Your Wood-Fired Hot Tub Faster
1. Use Kiln-Dried Logs
Dry logs burn hotter and produce a stronger flame, helping the stove heat water more efficiently.
2. Start With a Strong Fire
Begin with plenty of kindling and a few smaller logs to quickly build a strong flame.
3. Keep the Fire Consistent
Adding logs regularly helps maintain steady heat and prevents the fire from dropping.
4. Put the Lid On
Keeping a cover on the tub while heating prevents heat loss and significantly reduces heating time.
5. Stir the Water
Occasionally stirring the water can help distribute heat evenly throughout the tub.
How Much Firewood Does It Use?
Heating a wood-fired hot tub from cold typically uses around:
- 1 medium basket of logs
- or 8–12 average sized logs
The exact amount depends on the size of the tub, the outside temperature, and how hot you want the water.
The Natural Outdoor Experience
One of the biggest advantages of a wood-fired hot tub is the experience itself. The crackling fire, the scent of natural wood, and the gentle warmth create a relaxing atmosphere that electric hot tubs simply can’t replicate.
Many people also enjoy the fact that wood-fired tubs don’t require electricity, making them perfect for gardens, cabins, and countryside homes.
Premium Firewood and Wood-Fired Hot Tubs
At Maden Eco Fuels, we supply both high-quality kiln-dried firewood and wood fired hot tubs, helping you create the perfect outdoor relaxation space.
Using the right firewood will ensure your tub heats quickly, burns cleanly, and delivers the best possible experience.
Ready to Enjoy a Wood-Fired Hot Tub?
If you’re considering adding a hot tub to your garden, a wood-fired model offers a natural, cost-effective way to enjoy warm water all year round.
Browse our range of wood-fired hot tubs and premium firewood to get started.
Ready to experience a wood fire hot tub? Maden Eco Fuels delivers across the North East, including wood fire hot tubs in Newcastle, Durham, Sunderland, Alnwick, Morpeth and Hexham. We also supply premium kiln-dried firewood to keep your tub heating efficiently all year round.