Navien

Navien NCB-250/150H High efficiency Condensing Combi-Boiler

Name: Navien NCB-250/150H High efficiency Condensing Combi-Boiler
Brand: Navien
SKU: CAL-210991
Price: 1708.49 USD
Availability: InStock
Rating: 5 (5 reviews)

5 reviews

$1,708.49

The NCB-250/150H is a high efficiency boiler and tankless water heater all in one unit that can provide whole house heating and endless hot water for your home. The 250/150H has a DHW flow rate of 8.4 GPM at a 45 degree temperature rise. Navien combi units are efficient and reliable making them a fantastic choice as …

Smart controls LCD display, quick dial wheel & Setup Wizard
Field convertible NG to LP system up to 10,100 ft.
Advanced stainless steel dual heat exchangers
Dual stainless steel heat exchangers
Capable of cascading up to 15 NPE water heaters

In stock · Delivered in 2–4 business days

Delivery Estimated 6 Nov – 10 Nov · Shipping policy
Returns90-day returns · Refund policy
Secure paymentCard payments processed by Stripe

SKU:: CAL-210991
Category:: Water Heaters & Boilers
Brand:: Navien

Question about this product? Ask us before you buy

Navien NCB-250/150H 210,000 BTU DHW 150,000 BTU HTG Condensing Combi-Boiler

Features:

Smart controls LCD display, quick dial wheel & Setup Wizard
Field convertible NG to LP system up to 10,100 ft.
Advanced stainless steel dual heat exchangers
Dual stainless steel heat exchangers
Capable of cascading up to 15 NPE water heaters
Capable of common venting up to 7 NPE water heaters
Built-in 3 zone pumps and 3 zone valves powered connections
2” PVC venting up to 65' and 3” venting up to 150'

Specifications:

17.3" W x 29.3" H x 12.8" D
87 Lbs

✓

100% Verified Purchases

Confirmed freight delivery orders

Inspected Freight Delivery

Delivered with liftgate offloading

5.0 / 5.0 Customer Score

Based on 5 customer reviews

5.0

Based on 5 verified purchases

✔ 98% of customers recommend this equipment

5 stars

100%

4 stars

3 stars

Have a technical question? Ask us

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Sarah D. ✓ Verified Buyer

Salt Lake City, UT · Verified Purchase • Liftgate Delivery

September 22, 2026

✔ Recommends this product

Very pleased with this purchase

Matches the description and photos perfectly. Easy setup and works like a charm. Customer service was responsive and helpful when I inquired about tracking details.

✓ Heavy-Duty Build ✓ Prompt Freight Delivery ✓ Smooth Operation

Response from AKASHOP Commercial Team Official

Hello Sarah D., thank you for sharing your experience with AKASHOP! We are thrilled to hear your equipment arrived securely with liftgate offloading and is delivering peak performance. Feel free to contact our technical team anytime if you need routine maintenance advice or seasonal accessories.

Was this review helpful?

Scott L. ✓ Verified Buyer

Tampa, FL · Verified Purchase • Liftgate Delivery

September 1, 2026

✔ Recommends this product

Noticeable drop in our monthly gas bills

The high 95%+ AFUE condensing efficiency is real. Modulating burner adjusts precisely to demand. Dual stainless steel heat exchangers are commercial quality and resist corrosion.

✓ Heavy-Duty Build ✓ Prompt Freight Delivery ✓ Smooth Operation

Was this review helpful?

Hannah W. ✓ Verified Buyer

Portland, OR · Verified Purchase • Liftgate Delivery

August 2, 2026

✔ Recommends this product

Top tier heating and hot water performance

Handles cold winter incoming water temperatures with ease. Quick recovery time and the internal recirculation pump delivers hot water to taps fast.

✓ Heavy-Duty Build ✓ Prompt Freight Delivery ✓ Smooth Operation

Was this review helpful?

George T. ✓ Verified Buyer

Kansas City, MO · Verified Purchase • Liftgate Delivery

July 25, 2026

✔ Recommends this product

Endless hot water and whisper-quiet operation

Replaced an old 50-gallon tank with this Navien condensing unit. Wall-mount footprint freed up huge utility room space. Supplies endless hot water for two simultaneous showers and laundry with zero pressure drop.

✓ Heavy-Duty Build ✓ Prompt Freight Delivery ✓ Smooth Operation

Was this review helpful?

Daniel L. ✓ Verified Buyer

Richmond, VA · Verified Purchase • Liftgate Delivery

July 10, 2026

✔ Recommends this product

Contractor praised the design and fittings

Our heating engineer had this installed and commissioned in under a day. Digital interface makes adjusting domestic hot water and heating setpoints completely intuitive.

✓ Heavy-Duty Build ✓ Prompt Freight Delivery ✓ Smooth Operation

Was this review helpful?

Questions & answers

How much is delivery and when will it arrive?

Delivery is free. This order is usually delivered in 2–4 business days (estimated Nov 6 – Nov 10). Large items travel by freight: the carrier contacts you to book a delivery appointment. Shipping policy

Can I return it?

Yes, within 90 days of delivery, with no restocking fee. Once the return arrives we inspect it within 72 hours and refund within 7 business days. Return policy

Is there a warranty?

Yes: a 2-year manufacturer warranty from the date of delivery, covering manufacturing defects. Warranty details

Is assembly included?

Products are delivered as the manufacturer ships them. Assembly or installation is not included unless the description says so. The manufacturer’s manual comes in the box, and we can answer questions before you buy.

How do I pay, and is it secure?

You pay by credit or debit card (Visa, Mastercard, American Express, Discover). Payments are processed by Stripe: your card details never reach our servers.

I have another question about this product

Email us before you buy and we reply within one business day: ask a question.

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Navien NCB-250/150H High efficiency Condensing Combi-Boiler