This is the most common issue. Tankless heaters have narrow heat exchangers. Hard water (water with high calcium and magnesium content) causes scaly buildup inside these narrow pathways. If left untreated, this restricts water flow, reduces heating efficiency, and can ultimately burn out the heat exchanger.
This happens when you turn the hot water on, turn it off briefly, and then turn it back on. Because tankless units heat water on demand, that brief pause creates a gap in the heating process. The result is a brief blast of cold water sandwiched between the hot water. Some solutions involve installing a small buffer tank or a recirculation pump to keep the water moving.
From leaking tanks to pilot light failures and electrical issues, our technicians specialize in rapid water heater repair and replacement. We work with gas, electric, and tankless models to get your hot water flowing again immediately.
If a household tries to run too many hot water applications at the exact same time (e.g., two showers and a dishwasher), the tankless unit might struggle to supply the required volume. The unit may shut down entirely to protect itself. In these cases, you might need to upgrade to a higher-capacity unit or add a second heater.
Annual flushing and heat-exchanger cleaning can double the lifespan of the unit and prevent sudden winter outages. Tankless heaters have narrow heat exchangers. Hard water (water with high calcium and magnesium content) causes scaly buildup inside these narrow pathways.
rapid response times for homes currently left without hot water.
Do not wait. Our team is standing by to restore safety to your home immediately.
Evacuate immediately and leave the doors open behind you. Do not use your phone, flip light switches, or create any sparks. Once you are safely away from the house, call 911 or Xcel Energy to shut off the gas. After the property is secured, call us to repair the compromised pipe.
No. Your utility provider (like Xcel Energy) will respond to the emergency and shut off the gas to make the area safe, but they are not responsible for repairing pipes inside your property. You must hire a licensed plumber to locate and fix the leak before the gas can be turned back on.
Yes. Our team consists of licensed Master Plumbers who are fully certified to perform code-compliant gas line detection, repair, and installation across the entire Denver Metro area.
