When your tankless water heater stops heating, shows error codes, or shuts off during use, it becomes more than an inconvenience. Sterling Plumbing & Gas provides expert tankless water heater installation, repair, and maintenance in Calgary, so your home has reliable, efficient hot water again.
We install on-demand water heaters that provide endless hot water, improved energy efficiency, and more space in your home. Proper venting, gas sizing, and line connections are all handled professionally.
If your system is producing no hot water, showing error codes, cycling on and off, or leaking, we fix tankless water heaters of all major brands.
When your existing unit becomes inefficient or costly to repair, we replace it with a high-efficiency tankless water heater that suits your household's needs.
Annual maintenance helps prevent scale buildup, improves efficiency, and extends the life of your system. This is especially important for Calgary’s hard water.
We resolve issues such as:
Tankless systems are reliable, but Calgary’s hard water and cold winter temperatures can cause:
We identify the real cause and prevent issues from returning.
Here are the most common signs Calgary homeowners notice before calling for tankless water heater service:
Once you notice these symptoms, the next step is understanding what’s causing the issue.
We check your home’s water usage, plumbing layout, and power or gas supply.
We recommend the right tankless water heater based on your needs and explain every option.
We complete the installation or repair using high-quality parts and proper safety procedures.
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Trained Tankless Specialists
We service all types of tankless water heaters, including gas, electric, and condensing models.
Accurate Diagnosis and Repair
From tankless system error codes to no hot water situations, we identify issues quickly and fix them safely.
Emergency Tankless Water Heater Repair
If your tankless system fails without warning, we offer fast response to restore your hot water.
Local Calgary Expertise
Calgary homes have unique water hardness and usage patterns. We recommend tankless systems that match local conditions.
Tankless water heater installations and repairs require precision, experience, and attention to detail. Calgary homeowners choose Sterling Plumbing & Gas because they want a technician who communicates clearly, works cleanly, and delivers long-lasting results. Here is what two of our customers had to say:
“Luke has repaired our tankless hot water system, he has serviced our furnace and a c system as well as installed our dishwasher. Each time, he provides us with excellent service. Luke is knowledgeable, professional, and courteous. He is up front with the cost, so no surprises and extremely reasonable. I would highly recommend Luke and Sterling Plumbing.”
— Stacey W
Stacey called us for help with her tankless water heater, and after experiencing the quality of our work, she continued to rely on Sterling Plumbing & Gas for multiple services in her home. Luke provided clear pricing, professional repairs, and consistent workmanship each time, giving Stacey full confidence in her tankless system and other home systems.
“Luke was very thorough in installing our tankless water heater and made the entire process seamless. Very knowledgeable and answered all the questions we had. You know it is done right when the city inspector is pleased.”
— Russell B
Russell needed a new tankless water heater and wanted it installed correctly the first time. Luke completed the installation with care, explained the system in detail, and ensured everything met code. The positive feedback from the city inspector was an extra reassurance that the work was done right.
Sterling Plumbing & Gas provides service for tankless water heaters in Calgary, including:
The price depends on your home’s size, the type of tankless system, and any needed upgrades like venting or gas line adjustments. Tankless units cost more upfront than tank-style heaters but last longer and save energy over time.
After we check your home’s plumbing, water hardness, and hot water needs, we give clear, upfront pricing so you know exactly what you are paying for.
Most tankless water heater problems involve gas supply, electrical components, sensors, or pressurized lines. DIY repairs can cause further damage or create safety risks. Basic steps like checking the breaker or cleaning a filter are fine, but troubleshooting or repairs should be done by a trained technician to ensure safe, reliable operation.
Most temperature problems come from scale buildup, ignition failure, blocked vents, failing sensors, or low gas supply. Calgary’s hard water makes scale the most common culprit. We diagnose the exact cause and restore your heater safely.
Error codes can mean low water flow, blocked vents, ignition issues, frozen lines, or overheating. Turn off the system if safe, then call us. We read the code, identify the issue, and repair it properly to prevent further damage.
Yes. We upgrade homes from traditional tanks to high-efficiency tankless units. During installation, we check gas sizing, venting, and water flow to ensure safe operation and consistent hot water. We also help you pick the right model for your home’s layout and water usage.
With proper maintenance, most last 15–20 years. Calgary’s hard water can shorten lifespan if the system isn’t flushed annually. Regular service keeps the unit efficient and protects your investment.
Yes. Hard water causes scale buildup faster than in many cities. Annual maintenance cleans the heat exchanger, checks sensors, tests flow, and ensures safe operation. It prevents unexpected shutdowns and keeps energy bills lower.
Depending on your incoming water temperature, a high-efficiency system can provide 8–10 gallons per minute (GPM) of hot water. This high flow rate allows you to seamlessly run multiple showers and a dishwasher simultaneously without any drop in temperature. It is the ideal solution for large families or homes.
Turn off the water supply if safe and call us immediately. Leaks can come from fittings, gaskets, or heat exchanger damage. DIY repairs are risky because tankless heaters involve gas, electricity, and pressurized water. We find the source and determine the safest repair or replacement.