Regular maintenance tips are essential to keep your indoor propane tankless water heater running efficiently and extend its lifespan. Here are some key maintenance tasks you should perform:
1. Flush the System to Remove Scale Buildup
Over time, mineral deposits and limescale can accumulate inside the heat exchanger, reducing efficiency and potentially damaging the unit.
How Often?
- Every 6-12 months (more frequently in hard water areas).
How to Flush Your Water Heater:
- Turn off the power and gas supply.
- Close the cold-water and hot-water valves.
- Connect hoses to the service ports and place them in a bucket with a vinegar or descaling solution.
- Pump the solution through the unit for 45-60 minutes.
- Rinse with clean water before restoring normal operation.
✅ Maintenance Tips : Using a water softener can reduce scale buildup and extend the unit’s lifespan.
2. Clean the Air Intake Filter
Since propane tankless water heaters require combustion air, dust and debris can clog the air intake filter, reducing efficiency.
How Often?
- Every 3-6 months
How to Clean the Air Filter:
- Turn off the unit and remove the filter.
- Wash with warm soapy water and rinse thoroughly.
- Let it dry completely before reinstalling.
✅ Maintenance Tips: If you have pets or live in a dusty environment, check the filter more frequently.
3. Inspect the Venting System for Blockages
Proper ventilation is crucial for safe operation. Dust, debris, or even pests can obstruct the exhaust or intake vents, leading to performance issues or carbon monoxide buildup.
How Often?
- Every 6-12 months
What to Check?
- Ensure the exhaust vent is free of blockages.
- Look for signs of corrosion or leaks in the vent pipes.
- If you notice soot buildup, it may indicate incomplete combustion.
✅ Maintenance Tips: Installing a carbon monoxide detector near the unit adds an extra layer of safety.
4. Check for Gas Leaks and Burner Efficiency
Propane leaks or inefficient burners can lead to safety hazards and higher fuel consumption.
How Often?
- Every 6 months or immediately if you smell gas.
How to Check for Leaks:
- Turn off the gas supply and apply a soap-and-water solution to the gas connections.
- Turn the gas back on and check for bubbles forming, which indicate leaks.
- If leaks are present, turn off the gas immediately and contact a professional.
✅ Maintenance Tips: If the burner flame is yellow instead of blue, it may indicate incomplete combustion and require professional adjustment.
5. Test the Pressure Relief Valve
The pressure relief valve prevents excessive pressure buildup, ensuring safe operation.
How Often?
- Once a year
How to Test It:
- Locate the pressure relief valve (usually on the side of the unit).
- Lift the valve lever slightly to release some water.
- If no water flows or it leaks continuously afterward, replace the valve.
✅ Maintenance Tips: If you notice unusual noises or pressure fluctuations, have the unit inspected by a technician.
6. Winterize the Unit in Cold Climates
If you live in an area where temperatures drop below freezing, prevent frozen pipes and internal damage by winterizing your unit.
Winterization Steps:
- Drain the water heater before winter if it won’t be in use.
- Use a freeze protection kit if the unit is exposed to cold air.
- Insulate pipes and fittings to prevent freezing.
✅ Maintenance Tips: Some models come with built-in freeze protection, but it’s always best to insulate the pipes as an extra precaution.
7. Schedule Annual Professional Maintenance
While DIY maintenance helps keep your unit running smoothly, a yearly professional inspection ensures that all components are functioning properly.
A Professional Technician Will:
- Perform a deep system flush.
- Inspect the burner, gas lines, and heat exchanger.
- Check for software updates (on smart models).
- Test the ignition system and safety controls.
✅ Maintenance Tips: If your unit is under warranty, some manufacturers require professional servicing to keep the warranty valid.
Final Thoughts: Keep Your Tankless Water Heater Running Smoothly
By performing regular maintenance, you can:
✅ Increase energy efficiency
✅ Extend the lifespan of your heater
✅ Prevent costly repairs
✅ Ensure safe operation
Following these simple maintenance tips will help you get the most out of your indoor propane tankless water heater while keeping your energy bills low.
Energy Efficiency of Tankless Water Heaters: How Do They Compare to Traditional Water Heaters?
