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NAVIEN NFC-250/200H Combi Boiler, 199,000 BTU Heating, 210,000 BTU Water Heating
The Navien NFC-250/200H, installed by 4Most Energy, is the most powerful combi boiler in Navien’s lineup, delivering 199,000 BTU heating and 210,000 BTU hot water with a 10.8 GPM max flow rate. Ideal for large homes + 4,000 sq ft and high-demand heating and hot water.
$4,988.00
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Navien NFC-250/200H Combi Boiler
Installed by 4Most Energy — 199,000 BTU Heating • 210,000 BTU Hot Water
The Navien NFC-250/200H is the most powerful combi boiler in Navien’s lineup, built for large homes and high-demand heating systems that need superior performance and energy efficiency. Professionally installed and commissioned by 4Most Energy, this model combines powerful 199,000 BTU/h heating with 210,000 BTU/h domestic hot-water output to deliver exceptional comfort all year round.
With up to 95 % AFUE efficiency, a dual stainless-steel heat exchanger, and advanced condensing technology, the NFC-250/200H offers maximum reliability, lower fuel consumption, and whisper-quiet operation—making it ideal for Ontario homes facing cold winters and heavy daily usage.
Why Choose the NFC-250/200H (with 4Most Energy)
Highest heating capacity (199 k BTU) for large or multi-zone homes
Endless hot water (210 k BTU) with steady performance at 10.8 GPM max / 8.5 GPM average
Dual stainless-steel heat exchanger for longevity and corrosion resistance
Smart modulating burner for efficient, consistent temperature control
Wi-Fi ready (NaviLink™) and ultra-low NOx emissions for eco-friendly operation
Compact wall-mount design saves space and simplifies installation
Best Fit (Size & Applications)
Ideal for large homes up to ≈ 4,000 sq ft with 4 bathrooms
Perfect for high-demand domestic hot-water systems and multi-zone heating
Compatible with in-floor heating, radiators, and air-handler systems
Great for homes with combined hydronic and forced-air setups or basement suites
Additional Information
Additional Information
| Model | NFC-250/200H | Brand | Navien | Series | NFC-H |
|---|---|---|---|---|---|
| Heating Capacity | 199,000 BTU | Water Heating Capacity | 210,000 BTU | Energy Factor | 95 % |
| Flow Rate (Max) | 10.8 GPM | Flow Rate (Average) | 8.5 GPM | Wi-Fi Capable | YES |
| Venting Type | Direct Vent | Built-In Recirculation | YES | Energy Star | YES |
| Product Depth | 13.2" | Product Width | 17.3" | Product Height | 28" |
| Weight | 90 lbs | Warranty – Heat Exchanger | 10 Years | Warranty – Parts | 5 Years |
| Labour Warranty (4Most Energy) | 1 Year — Professional Installation by Certified 4Most Energy Technicians | ||||
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 NFC-250/200H is the most powerful combi boiler in Navien’s lineup — ideal for
large homes up to ~4,000 sq ft with up to 4 bathrooms and
high heating or hot-water demand.
Heating Output: 199,000 BTU/h |
Domestic Hot-Water Output: 210,000 BTU/h |
Flow Rate: Max 10.8 GPM / Avg 8.5 GPM
Perfect for multi-zone hydronic systems such as
in-floor radiant heating, radiators/baseboard circuits, and
air-handler systems.
Designed to maintain stable performance for both space-heating and domestic hot-water applications.
⚙️ Professionally sized, installed, and commissioned by
4Most Energy — with expert zoning guidance and priority
after-installation service anywhere in Ontario.
