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Navien NCB Boiler

Navien NCB-190/060H Series Gas Combi-...
from $79.95 or $7,195/mo
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Navien NCB-190/080H Series Gas Combi-...
from $79.95 or $7,195/mo
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Navien NCB-240/110H Series Gas Combi-...
from $89.95 or $8,095/mo
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Navien NCB-240/130H Series Gas Combi-...
from $89.95 or $8,095/mo
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Efficient, All-in-One Heating for Ontario Homes

Looking to simplify your home’s mechanical systems without sacrificing comfort or performance? Navien Combi Boilers are the perfect solution. These high-efficiency condensing units combine space heating and domestic hot water in one compact design, making them ideal for Ontario homeowners who want to save space, reduce energy bills, and enjoy unlimited hot water on demand. 

  

If you're searching “What’s the best combi boiler for home heating and hot water in Ontario?” — Navien offers a proven, energy-efficient answer. 

What Is a Combi Boiler and How Does It Work? 

A combi boiler (short for “combination boiler”) replaces both your furnace and traditional water heater. It provides: 

  

  • Hydronic home heating via in-floor radiant systems, radiators, or air handlers 
  • On-demand hot water for showers, laundry, and dishwashing — no tank required 
  • Navien combi units are condensing boilers, which recover extra heat from exhaust gases for up to 95% energy efficiency. This reduces energy waste and lowers your utility bills.

Why Choose a Navien Combi Boiler? 

Navien is a trusted global leader in condensing technology, and their combi units are built with smart features for modern living: 

  

  • High-efficiency condensing technology (up to 95% AFUE) 
  • Space-saving wall-mounted design 
  • Dual stainless-steel heat exchangers for long-lasting durability 
  • Built-in control panel with digital diagnostics 
  • Fast domestic hot water response with minimal temperature fluctuation 
  • ENERGY STAR® certified – rebate-eligible in Ontario 

  

Whether you live in a townhouse, bungalow, or small multi-level home, Navien combi boilers are an ideal fit for efficient, compact living. 

Choosing the Right Boiler Starts with the Right Info

Perfect for Ontario Homes With Radiant or Hydronic Heating 

Navien combi systems are best suited for: 

  • Homes using in-floor heating, radiators, or hot water baseboards 
  • Households wanting tankless hot water plus space heating in one system 
  • Small to mid-size homes looking to maximize space 
  • Energy-conscious homeowners replacing an aging boiler or tank system 
  • Properties with limited mechanical room space or no furnace closet

These boilers are also great for new construction or upgrades where you want to reduce equipment footprint and increase energy performance. 

Maintenance Tips to Extend the Life of You Boiler

These systems are engineered for reliability, but routine care ensures long-term efficiency: 

  

  • Flush the system annually to reduce scale and buildup 
  • Check and clean filters and condensate traps 
  • Schedule a professional inspection once a year 
  • Keep vents and air intakes clear of snow and debris 
  • Let Go Lime handle your seasonal service — we know Navien systems inside and out. 

Frequently Asked Questions

View All FAQs

Frequently Asked Questions

How is a combi boiler different from a regular boiler? 

A combi boiler provides both home heating and on-demand hot water, eliminating the need for a separate tank water heater.

Is it efficient for cold Ontario winters? 

Yes. Navien combi boilers are highly efficient and deliver consistent heat, even in extreme weather.

Will I run out of hot water? 

No. These units deliver hot water on demand, so you never wait for a tank to refill.

Can I use it with radiant floor heating? 

Absolutely. Navien combi units are ideal for radiant, baseboard, or fan coil heating systems.

Does it qualify for rebates? 

Yes. ENERGY STAR® certified Navien units often qualify for rebates in Ontario. Our team will help you apply.

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