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

Keep your tankless water heater running efficiently with regular maintenance. First Call Heating performs descaling, inspections and adjustments to ensure consistent hot water and extend unit life.

Our Service Areas

We maintain tankless heaters in Edmonton, Sherwood Park, St. Albert and nearby communities including Beaumont, Fort Saskatchewan, Morinville, Nisku, Tofield, Ardrossan, Bon Accord and Gibbons.

Keep Your System Running Like New

Mineral build‑up reduces efficiency and can lead to premature failure. Annual maintenance removes scale, checks components and keeps your system performing like new.

Protect Your Investment

Descaling the heat exchanger and cleaning filters ensure your tankless heater delivers consistent hot water. Regular maintenance also helps keep manufacturer warranties valid.

Maintenance Tasks

Benefits to Homeowners

Service Plans

Our maintenance plans include annual visits, priority scheduling and discounts on repairs. Plans can be bundled with other HVAC and plumbing services for full‑home coverage.

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

Furnace Repair FAQs

How often should maintenance be performed?

Most manufacturers recommend annual maintenance. Hard‑water areas may require more frequent service.

What happens if I don’t descale my heater?

Scale build‑up reduces efficiency, shortens lifespan and may cause overheating or error codes.

Can I descale the unit myself?

Some homeowners perform basic maintenance, but professional service ensures safe handling of chemicals and proper disassembly.

Does maintenance include flushing the water lines?

 Yes. We flush the system to remove debris and ensure clean water flow.

Will maintenance void my warranty?

 No. It is usually required to keep the warranty valid.

Can I combine maintenance with other services?

Yes. We offer bundled plans that include maintenance for furnaces, air conditioners and water heaters.