Maintenance Tips for Fire Heated Hot Tubs

Having a fire heated hot tub at your disposal is like owning a personal retreat, right in the comfort of your own backyard. But, like any other prized possession, it requires regular maintenance to keep it in optimal condition. Here, we will go through essential tips that will help you maintain your fire heated hot tub effectively.

Regular Cleaning

Cleaning the Tub Interior

The interior of your fire heated hot tub is in constant contact with water, bathers, and various elements from the environment. It’s crucial to keep the interior surfaces of the tub clean to avoid buildup of algae, bacteria, or biofilm.

You can use a gentle, non-abrasive cleaner along with a soft cloth or sponge to wipe down the interior. Remember to rinse thoroughly afterwards to ensure no cleaning residue is left behind. It’s recommended to do this every few weeks, or more frequently depending on use.

Water Replacement

Unlike traditional hot tubs, fire heated hot tubs don’t usually come with a built-in filtration system. This means you’ll need to replace the water more frequently to maintain cleanliness. As a general rule, you should aim to replace the water every one to two weeks, depending on usage and water quality.

Tub Exterior and Heating System

The exterior of the hot tub and the wood-burning stove or heater also need attention. For wooden tub exteriors, use a wood cleaner and a soft brush to gently scrub the surface. Rinse thoroughly and let it dry before applying a wood sealer. This will protect the wood from weathering and increase its lifespan.

For the stove or heater, make sure to regularly remove ashes after each use once it has cooled down. Over time, buildup of ashes can affect the heating efficiency. If your heater has a chimney, inspect it for soot and clean as necessary.

Water Quality

Maintaining good water quality is vital for a pleasurable soaking experience and to prevent damage to your hot tub.

Test the water regularly using water testing strips. You’ll want to check for pH, alkalinity, and hardness. Ideally, the pH should be between 7.2 and 7.8. Total alkalinity should be between 80 and 120 ppm, and calcium hardness should be between 100 and 200 ppm for wooden hot tubs.

If the levels are off, you can use hot tub chemicals to adjust them. Be sure to follow the manufacturer’s instructions when using these chemicals.

Cover Your Hot Tub

Always cover your fire heated hot tub when not in use. A good quality cover protects the tub from debris and harmful UV rays, and also helps maintain water temperature. Make sure to clean the cover regularly to prevent mildew and check for any wear and tear.

Regular Inspections

At least once a month, take some time to inspect your hot tub and its components. Check for any signs of damage, wear and tear, or leaks. Pay special attention to the heater or stove and any moving parts, if applicable. Early detection of potential issues can save you from costly repairs down the line.


Taking care of your fire heated hot tub might seem like a task, but with a regular maintenance routine, you can ensure that it continues to serve as a relaxing retreat for many years to come. Remember, consistency is key in hot tub maintenance. Happy soaking!