Tankless Water Heater Services

Are you getting blasted with freezing water mid-shower, staring at a flashing error code on the control panel, or wondering why your utility bills are climbing while your water pressure drops? These sophisticated systems require precise diagnostics when they fail, not a DIY reset or a blind guess. Flow Pro Plumbing is ready to track down the root cause and restore your hot water today.

Tankless Water Heater Repair & Service

When an on-demand unit stops demanding, the symptoms are impossible to ignore. You might experience the dreaded cold water sandwich where scalding water is suddenly followed by a freezing blast, or the unit might refuse to ignite entirely. We frequently trace these failures back to scaled-up heat exchangers, fouled flame sensors, or flow sensors that no longer register when you open a tap.

If a unit is too far gone or the heat exchanger is cracked, homeowners usually have to pivot to a Tankless Water Heater Installation & Replacement. Hard water is notoriously tough on these systems, causing calcium to coat the internal components and choke off efficiency over time.

Many homeowners are surprised to learn how many moving parts are inside these compact metal boxes. A failing water servo valve can restrict your output to a trickle, while a compromised computer board can send the entire system into a hard lockout. We carry the specialized testing equipment required to diagnose these exact electrical and mechanical faults on the spot.

Our diagnostic process cuts right to the chase by checking error codes, measuring incoming gas pressure, and testing the flow rate. We don't just clear the code and walk away; we test the igniter, clean the intake screens, and verify that the venting isn't obstructed. Catching a slight temperature fluctuation now can save you from a complete system lockout later.

Whether your system needs a quick sensor swap or an extensive descaling, our Tankless Water Heater Repair & Service team handles every call across the East Bay.

Tankless Water Heater Installation & Replacement

Upgrading to an endless hot water supply is a smart move, but only if the system is sized and installed flawlessly. Slapping a high-efficiency unit onto an undersized gas line or using the wrong exhaust venting is a guaranteed recipe for premature failure. We see a lot of botched retrofits where the old tank was pulled out, but the installer neglected to upgrade the gas meter or properly route the condensation drain.

A sloppy install doesn't just void your warranty; it creates a serious carbon monoxide hazard. Every new install performs better and lasts longer when paired with an annual Tankless Water Heater Maintenance & Tune-Up to keep the internal passages clear.

Converting from a traditional tank to an on-demand system is a major plumbing overhaul that requires careful planning. We have to map out the new gas demands, ensuring your existing meter and piping can handle the sudden surge required when the burner fires. We also evaluate your water quality to determine if pre-filtration is necessary to protect your new investment from the start.

We start every replacement by calculating your peak hot water demand to ensure we size the unit correctly for your specific household. From there, we handle the heavy lifting, including upgrading the gas piping, securing the mounting brackets, and running the specialized concentric venting to code. Once it is on the wall, we dial in the temperature settings and run multiple high-flow fixtures to prove the system can keep up.

Explore our complete Tankless Water Heater Installation & Replacement coverage to see how we approach planned upgrades.

Tankless Water Heater Maintenance & Tune-Up

These high-tech water heaters are incredible machines, but they absolutely cannot survive years of neglect. Hard water minerals act like plaque in the narrow copper waterways of the heat exchanger, forcing the burner to run hotter and longer just to warm the water. Without a proper flush, that scale buildup will eventually restrict the flow so badly that the unit overheats and shuts down entirely.

Ignoring this routine care is the fastest way to turn a twenty-year appliance into a five-year headache. If our tune-up process reveals heavily corroded sensors or a failing gas valve, a Tankless Water Heater Repair & Service visit is the immediate next step.

When a heat exchanger is coated in a thick layer of calcium, it acts as an insulator between the flame and your drinking water. That means you are burning significantly more gas just to achieve the same temperature at your shower head. Routine flushing strips that barrier away, restoring the unit's original thermal efficiency and keeping your utility bills right where they belong.

A professional tune-up is a highly specific process that goes way beyond wiping down the cover. We isolate the unit from your plumbing system and pump a specialized descaling solution through the heat exchanger for nearly an hour to dissolve the calcium deposits. We also pull and clean the inlet water filter, inspect the ignition rod for carbon buildup, and check the combustion fan for proper airflow.

Lock in proactive care with our Tankless Water Heater Maintenance & Tune-Up program.

Tankless Water Heater Inspection & Testing

Sometimes you just need to know exactly what condition your equipment is in before you head into winter or finalize a real estate transaction. You might notice a slight whine coming from the cabinet when the hot water runs, or maybe the water pressure at your shower head feels a little weaker than it used to. These subtle shifts are the early warning signs of component fatigue, venting issues, or impending scale blockages.

Guessing isn't a strategy when it comes to combustion appliances inside your home. If an inspection uncovers an aging system that poses a safety risk, we will walk you through the options for a Tankless Water Heater Installation & Replacement.

Beyond just the internal mechanical parts, we heavily scrutinize the venting and intake systems during every evaluation. A loose exhaust joint or an improperly pitched pipe can allow acidic condensation to drain back into the unit, eating away at the heat exchanger from the outside in. We identify these installation flaws and environmental hazards before they cause irreversible damage to the appliance.

Our inspection process is meticulous and entirely data-driven. We measure the temperature delta between the inlet and outlet, verify that the gas manifold pressure matches the manufacturer specifications, and check the exhaust venting for proper slope and seal. We will hand you a clear, honest assessment of the unit's health, detailing exactly how much life it has left and what needs attention.

Compare your equipment against our Tankless Water Heater Inspection & Testing checklist before minor wear turns into a major breakdown.

Our White-Glove Approach to Plumbing

Flow Pro Plumbing was built in 2017 by Jesse and Kayla Delgado because they were tired of seeing the plumbing industry deliver subpar, messy, and unreliable service. We designed our entire operation around a white-glove standard, meaning we treat your home with the utmost respect and leave our work area cleaner than we found it. We keep our crew intentionally small and highly trained so that every single customer receives the same five-star craftsmanship that Jesse himself would deliver.

We don't believe in high-pressure sales tactics or vague pricing estimates that magically inflate by the end of the job. Our licensed and insured technicians will diagnose the problem, explain the mechanics of the failure, and give you upfront options with honest recommendations. That commitment to quality over volume is exactly why we hold awards like Best of Houzz and Best of Oakley, and it is why our customers trust us for the long haul.

Related Services

A tankless unit is just one piece of your home's broader plumbing ecosystem, and resolving a hot water issue often means looking at the bigger picture. If your on-demand system is struggling due to poor fuel delivery, our experts can assess and upgrade your setup with our Gas Lines service to ensure proper volume and pressure.

For homes plagued by hard water, installing a system through our Water Filtration division is the best way to protect your heat exchanger from aggressive scale buildup. If you are still weighing the benefits of switching away from a traditional tank, our Water Heaters team can help you compare the upfront costs and long-term savings of both technologies.

Restore Your Hot Water Today

You shouldn't have to tolerate inconsistent temperatures, flashing error codes, or the stress of wondering if your water heater will survive another week. When your system starts acting up, you need a highly trained technician who knows exactly how to diagnose and resolve the failure without the guesswork. Reach out to the team at Flow Pro Plumbing and let us get your home back to normal. Schedule your service call with us right now.