What if your tankless water heater stops working?
When your water heater gives you trouble, it can be annoying. But don’t worry! This guide will help you understand what to do when you need to repair your tankless water heater. Knowing a bit about how they work and how to fix them can help you feel better and maybe even save some money. Let’s start learning!
Table of Contents
ToggleWhat is a Tankless Water Heater?
A tankless water heater, also known as an on-demand water heater, is a special machine that heats water without storing it in a big tank. When you turn on the hot water tap, cold water flows into the heater. The heater quickly warms it up, so you never run out of hot water. Isn’t that cool?
Because they heat water quickly, these heaters are usually more energy-efficient than traditional water heaters that store hot water. This means you can save on your energy bills!
Common Problems with Tankless Water Heaters
Sometimes, even the best machines can have problems. Here are some of the most common issues you might face:
1. No Hot Water
This one is obvious! If you turn on the hot water and nothing but cold comes out, it’s frustrating. This might happen if there is a problem with the heater or if it’s not getting enough gas or electricity.
2. Water Takes Too Long to Heat
If it feels like you’re waiting forever for hot water, something is wrong. It might be a sign that the heater needs cleaning or it’s malfunctioning.
3. Error Codes
Most tankless water heaters have error codes that help you figure out the problem. You might see a flashing light or a number. It’s good to look in the user manual to understand what it means.
4. Strange Noises
If your heater is making weird sounds, like popping or hissing, it could be a sign of a problem. Make sure to check it out, because it could lead to bigger issues.
5. Sediment Buildup
Over time, minerals from your water can build up inside the heater. This is more common in areas with hard water. This buildup can cause the heater to work less efficiently and can lead to other problems.

How to Troubleshoot Your Tankless Water Heater
If you’re having issues, you can try some troubleshooting steps before calling for help. Here are some simple things to check:
Step 1: Check the Power Source
Make sure the heater gets power. If it runs on electricity, check the circuit breaker. If it runs on gas, ensure the gas is turned on.
Step 2: Look for Error Codes
If your heater has a display, look for error codes. Write them down and refer to your heater’s manual to figure out what they mean.
Step 3: Inspect the Water Supply
Make sure the water supply is on. Sometimes, a simple fix like turning on a valve can solve the problem.
Step 4: Clean the Heater
If you suspect buildup, you might need to flush the heater. This process can help clear any sediment that could be causing issues.
Step 5: Check the Filter
Many tankless heaters have a filter. If it’s clogged with dirt, it can affect how well the heater works. Cleaning or replacing the filter often helps.
When to Call a Professional
Sometimes, it’s best to leave repairs to the experts. Here’s when you should definitely call for help:
1. You Can’t Find the Problem
If you’ve tried troubleshooting but can’t find the cause, don’t hesitate to call a professional. They have the tools and knowledge to help.
2. You See Damage
If you notice any leaks, cracks, or clear damage to your heater, don’t try to fix it yourself. A qualified technician can assess the damage safely.
3. You Hear Strange Noises
If your heater makes loud noises and you can’t figure out why, it’s time to call someone who knows about these machines.
4. You Need a Major Repair
Some repairs, like changing out a heat exchanger or motor, are complicated. If your heater needs this kind of work, it is best to call a professional.
5. Regular Maintenance
Even if things are working fine, regular check-ups and maintenance can help keep your heater in tip-top shape. Scheduling a professional to inspect it can save you from bigger problems later.

Basic Maintenance Tips for Tankless Water Heaters
Keeping your heater in good shape can help prevent issues from happening in the first place. Here are some simple ways to take care of it:
1. Flush Your Heater
Flushing the heater at least once a year can help remove any sediment buildup. You can do this with a vinegar solution or follow the guidelines in your user manual.
2. Clean the Filter
Check the filter periodically and clean or replace it as needed. This will help ensure that your heater keeps running smoothly.
3. Check the Venting
Ensure that the vents to your heater are clear. Blocked vents can prevent the heater from working correctly.
4. Set the Temperature
Make sure the temperature on your heater is set correctly. Too high can cause scalding, and too low can result in cold showers.
5. Schedule Regular Inspections
Consider having a professional inspect your heater once a year. Regular maintenance can save money and extend the life of the machine.
How KadeCo Inc. Can Help You
If you’re unsure about fixing your tankless water heater or need help, KadeCo Inc. is here to assist you! They are a trusted HVAC service company based in Pensacola, FL. You can rely on KadeCo for all your heating and air conditioning needs.
Why Choose KadeCo?
KadeCo was started by Kade Youmans, who has more than 20 years of experience in HVAC. He opened the company in 1997 to provide quality service without unnecessary upselling. Here are some reasons why KadeCo is a great choice:
- Honest Pricing: KadeCo does not charge for unnecessary work. They only fix what is broken.
- Free Quotes: You can get a free estimate on any job. This helps you budget without surprises.
- Customer First: The needs of customers always come first, and KadeCo operates with honesty and integrity.
- Recommendations: If KadeCo can’t do a job, they will help you find someone who can.
Contact Information
If you need help with your tankless water heater or any other HVAC concern, you can contact KadeCo Inc. at:
KadeCo Inc.
209 Brandywine Rd
Pensacola, FL 32507
(850) 516-7552
Conclusion
Understanding how to care for and fix your tankless water heater can save you time, money, and a lot of stress. Remember, regular maintenance is key to keeping it working well. If you run into serious issues, don’t hesitate to call KadeCo Inc. for help. They are ready to assist you with all of your HVAC needs in Pensacola, FL. With a little care and the right support, your tankless water heater can keep providing you with the hot water you need every day!




