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NAVIEN Boiler NHB-110H 110,000 BTU
$3,079.00
NAVIEN Boiler NHB-175H 175,000 BTU
$3,706.00
NAVIEN Boiler NHB-150H 150,000 BTU
The Navien NHB-150H, installed by 4Most Energy, delivers 150,000 BTU/h of powerful, high-efficiency heating for large homes or buildings up to 4,000 sq ft. Ideal for multi-zone radiant, baseboard, or air-handler systems, it also supports an indirect tank up to 70 gallons for domestic hot water.
$3,443.00
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Navien NHB-150H Heat-Only Boiler
Installed by 4Most Energy — 150,000 BTU Heating • High-Efficiency Condensing Boiler
The Navien NHB-150H is a premium high-efficiency heat-only condensing boiler designed for larger homes and light-commercial applications requiring powerful, consistent heating. Professionally installed and serviced by 4Most Energy, this boiler offers exceptional comfort, energy efficiency, and flexibility for advanced multi-zone systems.
With 150,000 BTU/h of heating output and up to 95 % AFUE efficiency, the NHB-150H provides reliable hydronic heat for radiant in-floor systems, radiators, baseboards, and air-handlers — all within a compact, wall-mounted design.
Why Choose the NHB-150H (Installed by 4Most Energy)
95 % AFUE condensing efficiency for lower gas bills
Stainless-steel heat exchanger for durability and corrosion resistance
Smart modulating burner ensures stable, quiet heating in all load conditions
Ideal for multi-zone systems or larger homes with multiple heating zones
Wi-Fi compatible (NaviLink™) for remote monitoring and control
Compatible with indirect tanks (50–70 gallons) for integrated hot water supply
Best Fit (Size & Applications)
Perfect for large homes or light-commercial buildings up to ~4,000 sq ft
Handles multi-zone heating systems, hydronic radiant, and air-handler setups
Can be connected to an indirect water tank (50–70 gallons) for domestic hot water
Ideal for properties that require both high capacity and energy-efficient performance
Additional Information
Additional Information
| Model | NHB-150H | Brand | Navien | Series | NHB |
|---|---|---|---|---|---|
| Type | Heat-Only Condensing Boiler | Heating Capacity | 150,000 BTU/h | AFUE Efficiency | 95 % |
| Fuel Type | Natural Gas / Propane | Heat Exchanger | Stainless Steel | Wi-Fi Capable | YES (NaviLink™ Ready) |
| Venting Type | Direct Vent (PVC, CPVC, Polypropylene) | Built-In Circulator Pump | NO | Energy Star | YES |
| Product Depth | 12" | Product Width | 17.3" | Product Height | 27.4" |
| Weight | 72 lbs | Indirect Tank Compatibility | 50–70 Gallons | Built-In Recirculation | Optional |
| Warranty – Heat Exchanger | 10 Years | Warranty – Parts | 5 Years | Labour Warranty (4Most Energy) | 1 Year |
Service Area
4Most Energy proudly serves homeowners and businesses throughout the Greater Toronto Area, Golden Horseshoe, and Southwestern Ontario with professional installation and service for Navien tankless water heaters and boilers.
We offer expert sales, installation, and maintenance for all Navien high-efficiency systems in:
Toronto • North York • Richmond Hill • Vaughan • Markham • Aurora • Newmarket • Mississauga • Oakville • Burlington • Brampton • Hamilton • St. Catharines • Niagara Falls • Kitchener • Waterloo • Guelph • Cambridge • Milton • Orangeville • Barrie • Oshawa • Whitby • Ajax • Pickering • Stoney Creek • Grimsby, and all surrounding communities.
Our certified HVAC team provides on-site installation and replacement services across these regions. Every Navien installation by 4Most Energy includes a 1-year labour warranty, ensuring peace of mind and guaranteed workmanship.
With licensed technicians strategically located throughout Ontario, we offer fast response times for after-installation service, emergency repairs, and priority maintenance calls, keeping your Navien tankless water heater or boiler running efficiently year-round.
Sizing Table
System Size & Capacity
The Navien NHB-150H provides 150,000 BTU/h of efficient heating power,
making it ideal for large homes or light-commercial buildings up to ~4,000 sq ft.
It’s designed for high-demand hydronic systems with multiple zones and steady performance under heavy loads.
Heating Output: 150,000 BTU/h |
Efficiency: 95 % AFUE |
Type: Heat-Only Condensing Boiler |
Indirect Tank: Recommended up to 70 Gallons
Perfect for radiant in-floor heating, hydronic baseboard/radiator systems,
and air-handler units in large residential or light-commercial properties.
When paired with an indirect hot water tank (50–70 gal), it can also supply reliable
domestic hot water, replacing traditional gas water heaters with higher efficiency.
⚙️ Professionally sized, installed, and commissioned by 4Most Energy — providing
zoning optimization, indirect tank integration, and ongoing support throughout Ontario.
