If you own an Apus RV tankless water heater, you already know the comfort it brings on your camping trips. Enjoying a hot shower in your RV feels wonderful—until the water is either too cold or too hot. Adjusting the temperature correctly is essential for safety, energy savings, and a pleasant experience. But how do you set the right temperature? Many RV owners struggle with confusing controls or worry about making mistakes.
This guide will show you how to adjust temperature on the Apus RV tankless water heater confidently. We’ll cover step-by-step instructions, explain key settings, highlight common mistakes, and share useful tips. Whether you’re a new RV owner or just want to fine-tune your water heater, you’ll find everything you need to get reliable, comfortable hot water every time.
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Understanding The Apus Rv Tankless Water Heater
Before adjusting the temperature, it’s important to understand how your Apus RV tankless water heater works. Unlike traditional tank heaters, this unit heats water instantly as it passes through. That means you get endless hot water, but you need to set the temperature carefully.
Features Of The Apus Rv Tankless Water Heater
- Digital temperature control: Most models have a digital display for easy adjustments.
- Automatic safety shut-off: Prevents overheating.
- Flow rate sensors: Ensures stable temperature even if water pressure changes.
- Propane or electric power: Depending on your RV setup.
Knowing these features helps you make safe, accurate temperature changes.
Why Temperature Adjustment Matters
Adjusting the water heater’s temperature affects:
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- Comfort: Showers and dishwashing are more pleasant.
- Safety: Prevents burns, especially for children and seniors.
- Energy use: Lower temperatures save propane or electricity.
- Appliance lifespan: High temperatures can damage the heater over time.
Most experts recommend a temperature between 110°F and 120°F for daily use. Higher settings risk scalding; lower settings may feel lukewarm.
How To Adjust Temperature On The Apus Rv Tankless Water Heater
Temperature adjustment is simple once you know the steps. Follow these instructions to set your preferred temperature safely.
Step 1: Locate The Control Panel
The control panel is usually on the front of the unit or inside your RV near the bathroom or kitchen. It has a digital screen, power button, and temperature adjustment buttons (usually marked with “+” and “-“).
Step 2: Power On The Unit
Press the power button to turn on the heater. Wait for the digital display to light up. If the display does not turn on, check your power supply (propane level or battery connection).
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Step 3: Set The Desired Temperature
Use the “+” and “-” buttons to adjust the temperature. The display shows the current setting in Fahrenheit. Press “+” to raise the temperature or “-” to lower it. For most RV users, 115°F–120°F is ideal.
Step 4: Confirm The Setting
Once you reach the desired temperature, the display will usually blink or show a confirmation. Some models require you to press “Enter” or “OK” to save the setting.
Step 5: Test The Water
Turn on a faucet and let the water run for a few seconds. Use a thermometer or your hand to check if the temperature matches your setting. If the water is too hot or cold, repeat steps 3-4.
Step 6: Adjust For Seasonal Changes
Water heaters sometimes perform differently in winter or summer. Cold incoming water in winter means you may need a higher setting. In summer, you may want to lower the temperature.
Step 7: Lock The Temperature (optional)
Some Apus models allow you to lock the temperature to prevent accidental changes, especially useful if children are in the RV. Check the manual for instructions.
Step 8: Turn Off The Unit When Not In Use
For energy savings and safety, turn off the heater when you leave the RV or during long storage.
Comparing Apus Rv Tankless Water Heater Models
Different Apus models offer various features for temperature control. Here’s a comparison to help you understand the options:
| Model | Display Type | Temp Range (°F) | Lock Feature | Power Source |
|---|---|---|---|---|
| Apus Basic | LED | 95–120 | No | Propane |
| Apus Pro | LCD | 90–130 | Yes | Propane/Electric |
| Apus Ultra | Touchscreen | 90–140 | Yes | Electric |
If you want more precise control and safety, choose models with a lock feature and wider temperature ranges.
Factors Affecting Water Temperature
Even after setting your heater, other factors can change water temperature in your RV. Understanding these will help you get stable, comfortable water.
Water Pressure
If your RV water pressure is low, the heater may not work efficiently. High pressure can push more cold water through, lowering the temperature.
Incoming Water Temperature
In winter, incoming water can be as low as 40°F. The heater must work harder to reach your set temperature. In summer, incoming water may be 70°F or higher.
Flow Rate
Apus heaters often have a minimum flow rate—usually 0.5 gallons per minute. If the faucet is barely open, the heater may not activate or may deliver cold water.
Multiple Appliances
Running several appliances (like shower and kitchen sink) at the same time can reduce water temperature. The heater splits its capacity, so you may need to adjust your usage.
Propane Or Battery Levels
Low propane or battery means less energy for heating. Always check levels before trips.
Altitude
At higher altitudes, propane burners work less efficiently. You may notice lower temperatures in mountain areas.
Safety Tips For Setting Temperature
Setting the right temperature is not just about comfort—it’s about safety. Here are practical tips to protect yourself and your family:
- Never set above 120°F if children or seniors use the water.
- Always test water with your hand before showering.
- Lock the temperature setting if your model allows.
- Keep the area around the heater clear to prevent overheating.
- Regularly check for leaks, especially after adjusting settings.
- Install childproof faucet covers if needed.
Common Mistakes When Adjusting Temperature
Many RV owners make simple mistakes that lead to discomfort or safety issues. Here’s what to avoid:
- Ignoring the display: Always check the digital screen after changing settings.
- Setting too high: Over 120°F can cause burns.
- Not testing water: Use a thermometer for accurate checks.
- Forgetting to lock: Children can accidentally change settings.
- Adjusting while running appliances: Wait until all faucets are off before changing the temperature.
Troubleshooting Temperature Issues
If your water heater doesn’t deliver the temperature you expect, try these solutions:
Heater Doesn’t Respond
- Check power supply, propane, or battery.
- Reset the heater by turning it off and on.
- Check for error codes on the display.
Water Is Too Cold
- Raise the temperature setting.
- Ensure water pressure meets minimum requirements.
- Check incoming water temperature.
- Inspect propane/battery levels.
Water Is Too Hot
- Lower the temperature setting.
- Confirm only one faucet is running.
- Check for stuck temperature controls.
Display Errors
- Consult your manual for error codes.
- Most errors can be cleared by resetting the unit.
For technical issues, contact Apus customer support or a certified RV technician.
Practical Tips For Reliable Temperature Adjustment
Having trouble getting the right water temperature? These practical tips can help:
- Use a digital thermometer to check water at the faucet after adjusting.
- Adjust the temperature in small increments—1–2°F at a time.
- If your RV has hard water, flush the heater regularly. Mineral build-up affects performance.
- During cold weather, preheat water by running the faucet for a minute before showering.
- Schedule annual maintenance for your heater to keep controls accurate.
Apus Rv Tankless Water Heater Vs. Traditional Tank Models
Wondering how Apus tankless heaters compare to old-style tank models? Here’s a quick overview:
| Feature | Tankless (Apus) | Traditional Tank |
|---|---|---|
| Hot Water Supply | Unlimited | Limited |
| Temperature Control | Digital | Manual/Analog |
| Energy Efficiency | High | Lower |
| Recovery Time | Instant | 15–30 minutes |
| Safety Features | Automatic shut-off | Basic thermostat |
Tankless heaters like Apus offer more control and efficiency, but require careful temperature adjustment for best results.
Real-world Example: Adjusting Temperature For Different Activities
Let’s look at how you might set your heater for common RV activities:
- Showering: Most people prefer 110°F–115°F. Start at 110°F and adjust if needed.
- Dishwashing: Hotter water cleans better—set to 120°F if safe.
- Laundry: Some detergents work best at 120°F, but check your appliance.
- Children’s Baths: Lower to 105°F for safety.
Adjust the temperature before each activity, and always lock settings if children are present.
Seasonal Adjustments: Why And How
RV trips happen year-round, and the season affects your water heater. Here’s how to adjust for weather:
Winter
- Incoming water is colder.
- Set temperature higher—120°F is common.
- Insulate pipes to reduce heat loss.
Summer
- Incoming water is warmer.
- Lower setting to 110°F to save energy.
- Monitor for overheating.
Spring/fall
- Moderate temperatures.
- Adjust between 110°F–115°F.
Maintenance Tips For Consistent Temperature
Maintenance is key for accurate temperature and safe operation:
- Flush the heater every 6–12 months to remove mineral deposits.
- Check and clean the temperature sensors regularly.
- Inspect the propane line for leaks.
- Update software/firmware if your model supports it.
- Replace batteries in the control panel as needed.
Proper maintenance keeps your heater working smoothly and prevents sudden temperature changes.
Comparing Apus To Other Brands
Apus is popular, but how does it stack up against other RV tankless water heaters? Here’s a quick comparison:
| Brand | Temp Range (°F) | Display | Safety | Price (USD) |
|---|---|---|---|---|
| Apus | 90–140 | Digital/Touch | Automatic shut-off | 450–650 |
| Girard | 95–130 | Digital | Basic shut-off | 500–700 |
| Truma | 90–120 | LED | Advanced safety | 700–900 |
Apus offers wide temperature ranges and affordable pricing, making it a strong choice for RV owners who want flexible control.
Expert Insights: What Beginners Often Miss
Many beginners overlook important details about temperature adjustment. Here are two non-obvious insights:
- Water flow consistency: If your RV water supply fluctuates (for example, when switching between city water and tank water), the heater may not maintain a steady temperature. Always check flow rate before adjusting.
- Sensor calibration: Over time, digital sensors can drift. If your water feels cooler or hotter than the display shows, recalibrate or replace the sensor. This maintenance is crucial for accurate adjustment.
Frequently Asked Questions
How Do I Know If My Apus Heater Is Set To The Right Temperature?
Check the digital display after adjusting. Test water at the faucet with a thermometer. If the water matches your setting, you’re good to go.
Can I Adjust The Temperature While Water Is Running?
It’s best to turn off all faucets before changing the temperature. This ensures the heater responds accurately. Adjusting while water runs can cause fluctuations.
What’s The Safest Temperature For Children?
Set the heater to 105°F–110°F for children. Always test water with your hand before baths or showers.
Why Does My Water Temperature Change During A Shower?
If you run multiple faucets or appliances, the flow rate changes. The heater splits its capacity, causing temperature drops. Use one faucet at a time for steady heat.
How Often Should I Maintain My Apus Rv Tankless Water Heater?
Flush the heater and check sensors every 6–12 months. Inspect propane and battery levels before every trip. Regular maintenance prevents sudden temperature changes.
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Adjusting the temperature on your Apus RV tankless water heater doesn’t need to be confusing. With the right steps, safety checks, and practical tips, you can enjoy reliable hot water in your RV year-round. Remember to test your settings, maintain your heater, and adjust for seasonal changes. For more technical details, visit the RV Industry Association. Safe travels and happy camping!
