If you’re thinking about installing a tankless water heater or already have one, you might wonder: can I handle this myself? The simple answer: yes. These systems are efficient, space-saving, and perfect for providing endless hot water—but they are also delicate machines that need proper care. Attempting DIY installation or maintenance can lead to expensive mistakes, safety hazards, or reduced efficiency.
Hiring a certified plumber ensures your tankless water heater runs safely, efficiently, and reliably. In Houston, TX, where water hardness and local plumbing standards can affect system performance, professional service is especially important. Let’s dive into why a certified plumber is the best choice for your tankless water heater.
Snapshot: Tankless Water Heater Quick Facts
| Feature | Details |
|---|---|
| Lifespan | 15–20 years with regular professional maintenance |
| Installation Cost (Houston) | $1,500–$3,500 depending on model and setup |
| Maintenance Frequency | Annually (descaling, inspections, and cleaning) |
| Energy Efficiency | Up to 30% more efficient than traditional tanks |
| Houston Insight | Hard water increases scaling—professional care is key |
How Tankless Water Heaters Work
Tankless water heaters heat water on demand rather than storing it in a tank. When you turn on a tap, cold water passes through the system and is instantly heated. This saves energy and provides endless hot water, but it also makes the system more complex than a traditional water heater.
Inside, there are sensors, valves, heating elements, and flow controls that all need to work together perfectly. Even a small mistake in installation or maintenance can cause system errors, reduce efficiency, or create safety hazards.
Certified plumbers understand these systems inside and out. They can:
- Install it correctly: Choosing the right location, connecting gas, water, and electrical lines, and performing proper calibration.
- Maintain it properly: Descaling, cleaning burners, and inspecting for leaks keeps the system running smoothly.
- Diagnose issues quickly: Professional experience helps identify small problems before they become major headaches.
Without the proper training, a DIY attempt can easily cause damage or void the manufacturer’s warranty.
Why DIY Plumbing Can Be Risky
It might seem tempting to save money by handling maintenance yourself, but tankless water heaters are not simple appliances. Common DIY mistakes include:
- Damaging internal components
- Misconnecting gas or electrical lines, which is dangerous
- Lowering energy efficiency and increasing utility bills
- Voiding warranties, leaving you responsible for repairs
- Triggering expensive emergency repairs that outweigh professional service costs
A certified plumber eliminates these risks, giving you confidence that your system is safe and reliable.
Benefits of Hiring a Certified Plumber
- Expert Knowledge: Certified plumbers are trained to work with all types of tankless water heaters and can identify issues quickly.
- Safety Assurance: Gas, water, and electrical connections are handled carefully, following local codes and protocols.
- Extended Lifespan: Routine maintenance prevents scaling, corrosion, and other damage, extending your water heater’s lifespan to 15–20 years.
- Optimized Efficiency: A professionally maintained system operates at peak efficiency, providing a steady supply of hot water while keeping energy costs low.
- Long-Term Cost Savings: Spending a little on professional service now helps avoid major repairs, system replacements, and emergency call-outs later.
Step-by-Step Guide to Caring for Your Tankless Water Heater
- Professional Installation: Hire a certified plumber to ensure safe and accurate setup. Proper installation includes location, gas and water connections, and calibration.
- Routine Maintenance: Schedule annual check-ups for descaling, burner cleaning, and inspection.
- Immediate Repairs: Don’t ignore small issues. Certified plumbers can address minor problems before they escalate.
- Replacement Guidance: If your unit is aging or repairs are costly, a professional can recommend and install the best replacement.
This approach protects your investment and ensures reliable hot water when you need it most.
Houston-Specific Considerations
Houston’s water tends to have moderate hardness, which can cause mineral buildup inside tankless water heaters. Over time, this reduces efficiency, triggers error codes, and can damage components. Local plumbers know the best techniques for handling these conditions, such as descaling, installing filters, and recommending maintenance schedules tailored to Houston’s water.
FAQs
Q1: How often should I service my tankless water heater?
A1: At least once a year. Homes with hard water may need more frequent maintenance.
Q2: Can I install a tankless water heater myself?
A2: DIY installation is risky due to gas, electrical, and water connections. Certified plumbers ensure safety and compliance.
Q3: How long do tankless water heaters last?
A3: With proper professional care, 15–20 years. Neglected units can fail much sooner.
Q4: Does professional maintenance improve efficiency?
A4: Yes. Regular inspections, descaling, and cleaning allow the system to run efficiently and reduce energy bills.
Q5: What if my unit needs repairs?
A5: Certified plumbers can diagnose, repair, or recommend a cost-effective replacement, saving time and money.
Trust John Moore Services for Your Tankless Water Heater
With over 50 years of experience, John Moore Services is Houston’s trusted partner for tankless water heater service. From installation to maintenance and emergency repairs, our certified plumbers provide expert solutions with safety, efficiency, and reliability in mind.
Whether you need a routine check-up, urgent repair, or a new installation, John Moore Services has the expertise to keep your hot water flowing smoothly. Contact us today at (713) 730-2525 or visit John Moore Services to schedule a service. Your tankless water heater deserves professional care—and that’s exactly what we provide.

