Efficient, Compact Heating for Radiant & Hydronic Systems

If your home relies on radiant in-floor heating, radiators, or hydronic air handlers, Navien Condensing Heating Boilers offer the perfect balance of comfort, performance, and efficiency. These high-efficiency boilers deliver consistent heat, lower energy bills, and whisper-quiet operation — all in a compact, wall-mounted unit. 

  

If you're asking “What’s the best boiler for energy-efficient home heating in Ontario?” — Navien’s heating-only condensing models are built to perform in cold climates like ours. 

What Is a Condensing Boiler and How Does It Work?

A condensing boiler extracts extra heat from exhaust gases that would otherwise be wasted, making it far more efficient than standard models. This process delivers more usable heat from every cubic foot of natural gas, resulting in: 

  

  • Efficiency ratings up to 95% 
  • Lower utility bills 
  • Less heat lost through venting 

  

Navien boilers are designed to circulate heated water through radiant floors, baseboard radiators, or air handlers offering full control over room-to-room comfort. 

Why Choose a Navien Heating-Only Boiler? 

Navien is one of the most trusted names in condensing technology. Their heating-only boilers are built with long-term durability and smart performance in mind: 

  

  • Up to 95% AFUE for reduced energy costs
  • Stainless steel heat exchanger for corrosion resistance 
  • Built-in smart controls for easier setup and diagnostics 
  • Wall-mounted design to save valuable floor space 
  • Low NOx emissions for a greener footprint 
  • Whisper-quiet operation – ideal for basements and utility rooms 

  

These systems work seamlessly with your home’s existing or new radiant heating setup — no separate hot water tank needed unless you choose to add an indirect tank. 

Choosing the Right Boiler Starts with the Right Info

Great for Ontario Homes with Radiant or Zoned Heating 

Navien condensing boilers are perfect for: 

  • Homes with radiant floor heating, hot water baseboards, or panel radiators 
  • Zoned heating systems where you want independent room temperature control 
  • Renovation projects or new builds that require compact, efficient heat 
  • Replacing older cast-iron or mid-efficiency boilers 
  • Homeowners seeking rebate-eligible ENERGY STAR® heating solutions 

Maintenance Tips to Extend the Life of You Boiler

To keep your system running efficiently: 

  

  • Flush the system once a year to prevent mineral buildup 
  • Clean the intake/exhaust vents to ensure safe airflow 
  • Check pressure levels regularly (especially before winter) 
  • Schedule annual servicing to maintain warranty compliance 

Frequently Asked questions

View All FAQs

Frequently Asked questions

Can I use this boiler for hot water too? 

This unit is for space heating only. For combined hot water and heating, consider a Navien Combi Boiler.

What makes a condensing boiler better? 

It uses exhaust gases to preheat cold water, recovering heat that standard boilers waste — increasing efficiency and reducing fuel use.

Is this system right for older homes? 

Yes. If your home already has hydronic heat, it’s often a direct upgrade. If not, it can be installed with radiant systems in renovations or additions.

Does it qualify for Ontario energy rebates? 

Most models are ENERGY STAR® certified and meet rebate criteria. We’ll help you check your eligibility.

How long does it last? 

With proper care, a Navien condensing boiler can last 15–20 years or more.

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Call us at +1 877-747-8292.

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