Expert Tankless Water Heater Repair in De Pere, WI from Hockers Home Services

When your tankless water heater falters, you need a fast, reliable solution from a team you can trust. Hockers Home Services is your neighborly expert for all things tankless water heater repair in De Pere, Green Bay, and the wider Northeast Wisconsin region. We understand that a sudden loss of hot water is more than an inconvenience—it’s a disruption to your home comfort. That’s why our certified technicians are dedicated to restoring your endless hot water supply quickly and professionally.

The Tankless Advantage: Why Modern Homes Choose On-Demand Hot Water

Tankless water heaters, also known as on-demand water heaters, represent a significant upgrade from traditional tank-style units. They heat water only when you need it, providing a continuous supply of hot water and eliminating the “cold shower surprise.” This efficiency translates directly into lower energy bills and a smaller carbon footprint, making them a popular choice for homeowners in Brown County.

However, even the most advanced systems require expert care. While a tankless unit boasts a longer lifespan and superior efficiency, its complex technology means that when a problem arises, it requires specialized knowledge to diagnose and repair. This is where the expertise of Hockers Home Services becomes invaluable.

Identifying the Problem: Common Tankless Water Heater Issues

Tankless water heaters are sophisticated machines, and their issues often manifest as error codes or a complete failure to produce hot water. Our team has extensive experience troubleshooting the most common problems that affect these units, ensuring a precise and lasting repair.

1. Mineral Buildup and Scaling

This is arguably the most frequent and significant issue, especially in areas with hard water like Northeast Wisconsin. Hard water contains high levels of minerals like calcium and magnesium. When water is heated, these minerals precipitate and form scale on the heat exchanger.

• The Problem: Scale acts as an insulator, drastically reducing the unit’s efficiency and flow rate. It can lead to overheating, premature component failure, and inconsistent water temperature.
• The Solution: Regular, professional flushing and descaling are essential maintenance. If the buildup is severe, a repair may involve replacing a damaged heat exchanger or flow sensor. Hockers technicians use specialized, non-toxic descaling solutions to restore your unit’s performance.

2. Ignition Failure and Gas Supply Issues

A tankless unit relies on a powerful burner to heat water instantly. If the unit fails to ignite, you won’t get any hot water.

• The Problem: Ignition failure can be caused by a faulty igniter, a blocked vent, a low gas supply, or issues with the flame sensor. Error codes related to “no flame” or “ignition lock-out” are common indicators.
• The Solution: Hockers technicians will inspect the gas line pressure, clean or replace the flame sensor, and ensure the venting system is clear and properly installed.

3. System Overload and Flow Rate Problems

Tankless units are rated for a specific flow rate (gallons per minute) and temperature rise. If too many hot water fixtures are running simultaneously, the unit can be overwhelmed.

• The Problem: The unit may shut down or produce lukewarm water because it cannot heat the volume of water fast enough.
• The Solution: Our repair service includes checking the flow sensor and modulating gas valve. We can also advise on usage or recommend solutions for increasing hot water capacity.

4. Cold Water Sandwich Effect

This is a brief, frustrating burst of cold water that occurs between hot water cycles.

• The Problem: It happens when the unit momentarily stops heating and cold water trapped in the pipes is delivered first.
• The Solution: Increased frequency of this effect may indicate a failing component. Hockers can diagnose adjustments or repairs to minimize the issue.

5. Exhaust and Ventilation Blockages

Gas tankless water heaters require proper ventilation to safely exhaust combustion gases.

• The Problem: Blocked or improperly installed venting can cause the unit to shut down for safety.
• The Solution: We inspect the entire venting system for obstructions, leaks, or damage.

The Hockers Solution: Expert Repair and Lasting Comfort

When you call Hockers Home Services for tankless water heater repair, you’re not just getting a quick fix—you’re getting a comprehensive service designed for long-term reliability. Our process is built on transparency, expertise, and a commitment to your satisfaction.

Our Repair Process

1. Rapid Response and Diagnosis: We prioritize your call and perform complete diagnostics using advanced tools.
2. Clear Communication: We explain the issue, the solution, and provide an upfront estimate.
3. Certified, Factory-Trained Technicians: Our team is trained on all major brands and repair methods.
4. Quality Parts and Workmanship: We use only manufacturer-approved parts and guarantee our work.

Beyond Repair: Maintenance for Peak Performance

The best way to avoid emergency repairs is through annual maintenance designed specifically for tankless systems.

Annual Tankless Water Heater Tune-Up

• System Flush and Descaling
• Ignition and Burner Check
• Venting Inspection
• Safety Valve Test
• Filter and Strainer Cleaning

Regular maintenance helps extend lifespan, maintain performance, and prevent breakdowns.

Why Choose Hockers Home Services in Northeast Wisconsin?

We are more than plumbers—we are your neighbors.

Local Focus, Professional Service

• Community Roots: We understand local water quality and climate challenges.
• Comprehensive Home Services: Plumbing, HVAC, electrical—all under one trusted company.
• Commitment to Excellence: Clean workspace, respectful service, and reliable repairs.

Serving Our Neighbors in Brown County and Beyond

We proudly serve:

• De Pere
• Green Bay
• Ashwaubenon
• Howard
• Suamico
• Bellevue
• Allouez

The Financial and Environmental Benefits of Tankless Technology

Energy Efficiency and Cost Savings

Tankless units only fire when hot water is needed, reducing heating costs by 20%–30%. This is especially valuable in Northeast Wisconsin where heating costs vary seasonally.

Longevity and Warranty

Tankless units often last 20 years or more—double that of a tank system. Many come with long warranties on the heat exchanger.

Space Savings

Their compact, wall-mounted design frees up valuable space.

Deep Dive into Tankless Water Heater Diagnostics

Error Code Interpretation

Error Code Range – Common Cause – Hockers Repair Action

E10–E19 – Ignition/Flame Failure – Gas pressure inspection, flame rod cleaning

E30–E39 – Overheating – Descaling, thermistor check

E70–E79 – Flow Sensor Issues – Flow sensor cleaning or replacement

E90–E99 – Venting Problems – Inspect exhaust and intake systems

Component-Level Repair

• Heat Exchanger Descaling
• PC Board Troubleshooting
• Water-Gas Valve Adjustment

Schedule service with Hockers Home Services and experience five-star comfort care. We are proud to serve De Pere, Green Bay, Ashwaubenon, Howard, and all surrounding Brown County communities. Our team is ready to deliver the quality workmanship and responsive customer care you deserve.