Strange noises coming from your water heater—especially loud popping or explosive ignition sounds—are a serious warning sign. We recently completed a water heater replacement in San Ramon, CA 94583 after a homeowner contacted us late in the day to inspect a system that was making unusual noises.
If your water heater is producing loud ignition sounds or not operating smoothly, it may be time to consider a full water heater replacement rather than attempting temporary repairs.
San Ramon Water Heater Replacement Case
The homeowner had an older A.O. Smith gas water heater that was no longer operating safely. During inspection, we found that the burner was failing and the unit was producing explosive ignition sounds inside the combustion chamber.
This type of issue is more than just noise—it can indicate combustion problems that should not be ignored. If you’re hearing similar sounds, you may want to review this guide: Noisy water heater – common sounds and solutions.
Given the age of the system and the condition of internal components, repair was not a practical or safe option. We recommended replacing the unit with a new, more reliable system.

Installing a New Bradford White 50-Gallon Water Heater
The homeowner chose to install a 50-gallon Bradford White gas water heater, known for its durability and consistent performance.
Our installation included:
- Removal of the old A.O. Smith water heater
- Installation of new Bradford White unit
- Replacement of water supply connections
- Inspection and testing of gas system
- Full safety and pressure checks
Even though the job started late in the day, we completed the installation the same evening, and hot water was fully restored that night.
What Causes Explosive Ignition in Water Heaters?
Explosive ignition or loud “boom” sounds in a water heater are typically caused by delayed gas ignition. This can happen due to several factors:
- Dirty or failing burner assembly
- Gas control valve issues
- Improper combustion conditions
- Age-related wear of internal components
These issues often develop over time and can become dangerous if ignored. In many cases, they are also connected to poor maintenance or sediment buildup.
Heavy Sediment Buildup – A Common Problem
During the replacement process, we discovered that the tank was heavily filled with sediment buildup. This is one of the most common issues in older water heaters.
Over time, minerals from water settle at the bottom of the tank, creating a layer of sediment that can:
- Reduce heating efficiency
- Cause overheating of the tank bottom
- Lead to unusual noises
- Shorten the lifespan of the unit
Learn more about this issue here: Water heater sediment buildup and flushing.

Why Regular Flushing Is Important
Many water heater failures can be prevented with routine flushing. Regular maintenance helps remove sediment and keeps your system operating efficiently.
- Improves heating performance
- Extends lifespan of the system
- Reduces risk of overheating
- Prevents internal damage
We recommend flushing your water heater at least once a year. You can also learn more here: Water heater maintenance services.
Why Bradford White Is a Better Long-Term Choice
Bradford White water heaters are widely known for durability and consistent performance. Compared to many older systems, they offer better reliability and improved design.
- High-quality internal components
- Reliable burner and gas control systems
- Better resistance to common issues
- Trusted by professionals
Choosing a reliable brand can significantly reduce the chances of early failure and costly repairs.
Signs You Should Replace Your Water Heater
If you notice any of the following, your system may need replacement:
- Loud popping or explosive ignition sounds
- Inconsistent hot water
- Visible rust or corrosion
- Leaks around the tank
- System older than 10–12 years
Read more here: Signs it’s time to replace your water heater.
Professional Water Heater Replacement in San Ramon
At SAV Water Heaters, we specialize in diagnosing and replacing failing systems quickly and safely.
- Licensed and insured contractor
- 20+ years of experience
- 300+ water heaters serviced annually
- Same-day service available
We also provide service throughout the Bay Area. Learn more about our local work here: Water heater replacement in San Ramon.
Need Water Heater Replacement in San Ramon, CA 94583?
If your water heater is making unusual noises or no longer working properly, don’t wait until it fails completely.
We provide fast, professional water heater replacement services.
📞 Call or text SAV Water Heaters today 👉 Send a photo of your system for a quick estimate
FAQ – Water Heater Noises and Replacement
Why is my water heater making popping sounds?
This is usually caused by sediment buildup or delayed ignition in gas systems.
Is explosive ignition dangerous?
Yes, it can indicate combustion issues and should be inspected immediately.
Can sediment damage a water heater?
Yes, it can reduce efficiency, cause overheating, and shorten the lifespan of the unit.
How often should I flush my water heater?
At least once a year, or more frequently depending on water quality.
Should I repair or replace an old water heater?
If the unit is old and showing multiple issues, replacement is usually the better long-term solution.