Tankless Water Heater Repair in Edmonton, Sherwood Park and St. Albert

If your tankless water heater isn’t producing hot water, displays error codes or shows fluctuating temperatures, First Call Heating offers prompt repair services. We diagnose issues and restore your system’s performance.

Our Service Areas

We repair tankless heaters for homeowners in Edmonton, Sherwood Park, St. Albert and surrounding towns including Beaumont, Fort Saskatchewan, Morinville, Nisku, Tofield, Ardrossan, Bon Accord and Gibbons.

All Major Brands Serviced

Our technicians fix ignition failures, mineral build‑up, sensor errors and gas supply issues. We work on all major brands and carry common parts for faster repairs.

Signs You Need Repair

Error codes, inconsistent water temperature, reduced water pressure or no hot water at all signal the need for a professional inspection. Addressing issues quickly prevents further damage.

Common Repairs

Our Approach

We conduct a diagnostic evaluation, explain the problem and offer solutions with upfront pricing. Many repairs are completed on the same visit thanks to our stocked service vans.

Prevention Tips

Regular maintenance reduces the likelihood of breakdowns. Use water softening or filtration systems if you have hard water to minimize scale.

Customer Testimonials

Frist Call Heating and Air Conditioning employees were always on time, clean, professional . I received all the products that I wanted.
They were also very kind , I would recommend them to anyone
Smith K on Google
I have been a customer of First call since 2015. I have always found them very professional, prompt, knowledgeable and friendly. I have used them for regular maintenance and for repairs on the humidifier. I have found that when possible they send the same technician who is familiar with our heating system. But sometimes a different one. They are all very good. I whole heartedly recommend them.
Norman B on Google

After shopping around different companies, I had First Call come out to provide a quote for a new air conditioning installation. Steve came to do the estimate, and he was excellent to work with, he was professional, knowledgeable, and offering great customer service. Based on his expertise, the quality of the product (Lennox), and the reasonable price, I decided to move forward with First Call.

That said, after the unit was installed, there were a few minor installation-related issues that initially left me less than fully satisfied. After completing the customer satisfaction questionnaire, I received a call from Anna in the office. She showed genuine concern about my experience and assured me that the issues would be addressed promptly. True to her word, Andrew, the Install Manager, came out, listened to my concerns, validated them, and had everything corrected quickly.
Therefore, even with the minor issues during the install, I would absolutely recommend First Call Heating. As they demonstrate a genuine commitment to quality products and excellent customer care at a fair price, without trying to upsell a unnecessary 12 year warranty at an inflated cost.
Jay P on Google
Excellent experience with First Call while installing an air source heat pump for our bungalow. Chris walked us through a variety of options and clearly outlined the potential benefits and drawbacks of each so that we could make an informed decision.

Installation with Andrew and the team was excellent, and it was clear that the team put effort and planning into the install in order to leave the mechanical room clean and organized in the end.

Wouldn’t hesitate to go back to First Call for our HVAC needs in the future.
Kyle Y on Google
Every single interactions I had with First Call Heating & Air Conditioning has been fantastic. Originally we installed a humidifier in our house. The price was right and the work done quickly. When it got to -40 and things froze, they answered during emergency hours. They didn’t take advantage of my distress to get money from me. They told me what was going on and advised. Later we used them to upgrade our furnaces, and again, the process was easy on my end and the work does with wonderful professionalism. Their technicians truly went above and beyond to help us. They’re my go-to from now on. Don’t need anyone else.
Anat R on Google

Tankless Water Heater Repair FAQs

Why is my heater displaying an error code?

Error codes indicate specific faults such as ignition failure, scale build‑up or sensor problems. We diagnose and correct the underlying issue.

Why does the water temperature fluctuate?

Fluctuations may be caused by sensor problems, scale build‑up or undersized units.

Can I repair my heater myself?

Repairs often involve gas or electrical systems and should be performed by licensed professionals.

How quickly can you repair my unit?

We offer same‑day service for many repairs and carry common parts on our trucks.

Will repairs be covered by warranty?

Manufacturer warranties may cover parts. Labour is billed separately.

Should I repair or replace my heater?

If your unit is approaching the end of its lifespan or has frequent issues, replacement may be more cost‑effective. We’ll provide honest recommendations.