Navien NFC

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Navien NFC

High efficiency condensing combi-boiler

The Navien NFC has More features, more benefits, more extras and more value... all in one package.

Patented Compact Stainless Steel Fire Tube Heat Exchanger

Advanced Controls with Intuitive User Interface

DHW Module with Mixing and Water Adjustment Valves

Multiple Venting Options Up to 150’

95% AFUE and TDR up to 11:1

Primary Manifold, NaviClean™ Magnetic Filter and Isolation Valve Kit Included

Pressure Regulating Valve, Air Vent and Manifold Included

Common Venting Up to 8 Units and Cascading Up to 16 Units

Inside the Unit


The Weiss-Johnson Advantage is our ability to go above and beyond for our customers. When you choose Weiss-Johnson as your home comfort specialists you get the wealth of knowledge we have earned as a company for over 40+ years. It's not a surprise Weiss-Johnson is Edmonton's 1st Choice for all Heating, Air Conditioning and Plumbing needs.

Ready to go 24/7/365

Weiss-Johnson is Edmonton's 1st Choice for all your Heating, Air Conditioning and Plumbing needs.

Our certified technicians are available 24/7 year round to ensure that you can get help whenever that may be. Our team is committed to total customer satisfaction no matter what time of day it is.

What Our Customers Say About Us

"The guys were very friendly. They took lots of care and attention when removing the old furnace and replacing it with the new one to not damage anything along the way. Once finished they took the time to explain the operation and go through any questions we had. I would definitely use them again."

- Kyle J.


"This review is for Noel who came to my home to see why our electric air cleaner was not working. He was punctual and super friendly. Found the problem within 15 minutes. Had the part ordered, and 9 days later it literally only took him 3 minutes to replace it for us!"

- Joy H.


"Booking an appointment for a furnace checkup was a very quick and simple phone call. The technician was on time as promised, very knowledgeable and professional. It gave us piece of mind that our 10 year old furnace was in good working order."

- Nicolas L.