The Navien NFC-250/200H is a high-efficiency condensing combi-boiler that combines space heating and domestic hot water production in a single compact unit. It delivers 95% AFUE efficiency and is Energy Star certified. The unit features a 15:1 turndown ratio for both heating and domestic hot water, ensuring precise temperature control and energy savings. Equipped with a new domestic hot water module with mixing and water adjustment valves, it provides consistent, comfortable hot water. Advanced controls with an intuitive interface and Setup Wizard simplify installation and operation, while built-in powered connections support up to three zone valves or pumps.
This boiler supports flexible venting options with 2" pipe runs up to 65 feet and 3" runs up to 150 feet. Its patented stainless steel fire tube heat exchanger and non-metallic condensate base ensure durability and reliability. The NFC-250/200H is approved for high altitude installations up to 10,100 feet on natural gas and propane, with conversion kits included. It can be common vented with up to seven NPE units or cascaded with up to fifteen units, allowing easy capacity expansion for larger heating demands.
Features
95% AFUE efficiency, Energy Star certified
15:1 turndown ratio for heating and DHW
New DHW module with mixing and water adjustment valves
Advanced controls with Setup Wizard
Built-in powered connections for 3 zone valves or pumps
Venting: 2" up to 65 feet, 3" up to 150 feet
Patented stainless steel fire tube heat exchanger
Non-metallic condensate base
High altitude approval up to 10,100 ft (NG and LP) with conversion kits
Common venting up to 7 NPE units; cascading up to 15 units
Applications
Residential and light commercial space heating
Domestic hot water supply for multiple fixtures
Multi-zone hydronic heating systems
High altitude installations
Cascade boiler setups for increased capacity
Related Video: NFC-H Condensing Fire Tube Combi-Boiler
Find helpful answers about our outdoor products, orders, shipping, returns, and everything you need to know before you shop.
✓
Create Your Perfect Outdoor Space.
Explore quality products for your yard, garden, and outdoor lifestyle.
?
Still have a question?
We're here to help.
Once your order has shipped, tracking details will be provided when available so you can monitor your delivery.
Orders are generally processed and prepared for shipment within 1 business day. Delivery time may vary depending on the carrier and destination.
We offer a 30-day return period. Please contact our support team before returning an item so we can help you with the next steps.
Emlawn offers a wide selection of products for your home, outdoor space, work, and everyday life. Our range includes lawn and garden equipment, outdoor storage, furniture and office products, home appliances, kitchen essentials, cleaning products, fitness equipment, and more.
You can contact our team through the contact form, email, or phone. We're happy to assist with product questions, orders, shipping, returns, and other inquiries.
Emlawn
Customer Reviews
See what our customers are saying about their
Emlawn experience.
5
★
★
★
★
★
Based on
550
verified reviews
✓
US Customers
✓
100% Satisfaction
5
★
500
4
★
15
3
★
4
2
★
1
1
★
1
A
Amanda C.
✓
Verified
🇺🇸
United States
09/09/2026
★★★★★
"Excellent service and a great product. Everything was straightforward, from ordering to delivery. I’m very happy with my experience and would recommend Emlawn to others."
J
James W.
✓
Verified
🇺🇸
United States
09/04/2026
★★★★★
"Exactly what I was looking for. The product matched the description, arrived in good condition, and was easy to get set up. Very pleased with the purchase"
S
Sarah T.
✓
Verified
🇺🇸
United States
09/05/2026
★★★★★
"Great experience from start to finish. The product quality was impressive and delivery was quicker than I expected. Customer service was also helpful when I had a question"
J
Jeff R. Moore
✓
Verified
🇺🇸
United States
09/01/2026
★★★★★
"Really happy with my purchase. The product arrived well packaged, everything was as described, and the whole ordering process was smooth. I’d definitely shop with Emlawn again."
gclawns Selection
You May Also Like
Explore more powerful mowers selected to complement your choice.
No related mowers available.
Choosing a selection results in a full page refresh.
