For a Free No-Obligation Quote on Navien Boiler Replacement, Call Today: 631-591-2290
We install and replace the most popular Navien combi boiler models on Long Island, including the Navien NCB 240, Navien NCB 240 combi boiler, Navien 240 combi boiler, and the latest Navien high efficiency combi boiler model lines. Serving Nassau & Suffolk homes with permit handling, proper venting, and clean, code-compliant installs.
Popular Navien models we install on Long Island
We carry and service the Navien NCB-H and NFC-H combi families and related heat-only options. This section helps you match output to your home and hot-water needs.
Navien NCB-H (Combi)
- Navien NCB 240 (also seen as Navien NCB 240 combi boiler, Navien NCB 240E, Navien NCB 240 110H, Navien NCB 240 130H) — a top pick for many Long Island homes needing space heat + continuous hot water.
- Model tokens we commonly install on Long Island: NCB 240 / 240E / 240 110H / 240 130H.
Navien NFC-H (Combi, higher output)
- Navien NFC H combi boiler variants for larger DHW loads.
- Popular search/fit options: Navien NFC 250 200H, Navien NFC 250 175H.
- Model tokens we see locally: NFC 250 / 200H / 175H.
Navien NFB (Heat-Only)
- For specific system designs, homeowners ask about Navien NFB 200H; pairs well with an indirect tank where combi isn’t ideal.
Navien combi boiler prices on Long Island
We’re transparent with pricing so you can plan confidently.
- People search for Navien boiler price, Navien combi boiler price, and price Navien combi boiler — so here’s what affects your number: BTU size, venting/liner needs, condensate handling, plumbing repipe scope, gas line, zoning/controls, and town permits.
- Model-specific interest includes: Navien ncb 240 110h price, Navien nfb 200h price, Navien nfc 250 175h price on Long Island.
- Typical installed ranges depend on home size and scope; request a tailored quote to pin down your exact price.
Right-sizing your Navien for a Long Island home
Heat load vs. hot-water demand
We size for both space heating and DHW recovery. That’s why models like NCB 240 and NFC 250 appear often — bigger households, multi-bath homes, and larger baseboard or hydronic loads benefit from higher output.
Combi vs. boiler + indirect tank
Combi units are compact and efficient; an indirect tank can be better for very high, simultaneous hot-water draws. We’ll recommend the right path after a quick assessment.
Our Navien installation process (Nassau & Suffolk Counties)
- Permit handling & inspection scheduling
- Proper venting (sidewall/chimney), chimney liner if required
- Gas line verification, condensate neutralizer & routing
- System flush, commissioning, and controls setup
- Warranty registration and homeowner walkthrough
Rebates & financing
High-efficiency Navien combi boilers can qualify for rebates. Ask about monthly payments and current incentives for Long Island.
Service areas on Long Island
Fast response across Nassau & Suffolk. We regularly install in Huntington, Smithtown, Islip, Babylon, Brookhaven, Oyster Bay, Riverhead, and more.
Why Choose a Navien High-Efficiency Boiler for Your Long Island Home
Modern Navien condensing boilers deliver high comfort with low fuel use. Below is an at-a-glance guide to models, specs, pricing, and FAQs—formatted for homeowners comparing options.
Get a Fast, Itemized Quote — All Island Comfort
Call: 631-591-2290 | Service Area: Nassau • Suffolk • Queens
Tell us your address, number of zones/thermostats, current equipment, and hot-water needs. We’ll recommend the right Navien model, confirm rebates, and provide a clear, line-item estimate.
Navien Boiler Benefits (Quick Summary)
- Up to 95% AFUE, ENERGY STAR® rated (condensing design)
- High turndown ratios (up to 15:1) for steady, quiet heat and fewer on/off cycles
- Stainless steel heat exchangers and long venting options (PVC/CPVC/PP)
- Advanced onboard controls with setup wizard; optional Wi-Fi (NaviLink)
- Combi models provide space heating + endless domestic hot water in one appliance
Which Navien Is Right for You?
- NCB-H (Combi): One wall-hung unit for heat + hot water. Strong DHW performance for showers and laundry.
- NFC-H (Combi, High Capacity): For larger homes or higher DHW demand; robust space-heating output with the same compact form factor.
- NFB-H (Boiler-Only): For homes with a separate water heater or indirect tank; premium fire-tube heat exchanger and advanced controls.
- NHB-H (Boiler-Only): Proven, compact condensing boiler available in four capacities; great for replacements and tight spaces.
Navien Boiler Models & Key Specs
| Series / Type | Fuel | AFUE | Typical Heating Input Range | Turndown | Notable Features |
|---|---|---|---|---|---|
| NCB-H (Combi) | NG / LP | Up to 95% | ≈13,000–130,000 BTU/h (space heat) | Up to 15:1 | Dual stainless steel heat exchangers; strong DHW up to ~5.4 GPM @ 70°F Δ |
| NFC-H (Combi, high-capacity) | NG / LP | Up to 95% | Models to ~199,900 BTU/h | Up to 15:1 | Built-in zone control (up to 3), upgraded DHW module |
| NFB-H (Boiler-Only) | NG / LP | Up to 95% | ≈13,300–199,900 BTU/h (by model) | Up to 15:1 | Stainless steel fire-tube HX; advanced controls; long venting |
| NHB-H (Boiler-Only) | NG / LP | Up to 95% | Multiple sizes: 55, 80, 110, 150 | Up to 15:1 | Compact wall-hung; dual stainless steel heat exchangers |
Notes: AFUE and turndown vary by specific model and fuel. DHW capacity shown for combi models depends on temperature rise and flow demand.
Navien Boiler Price and Installation Cost — All Island Comfort (Typical Long Island Ranges)
Every home is different. These ranges reflect clean, code-compliant installs with our standard parts and labor. Your quote will be itemized after a brief site assessment.
Boiler-Only Replacement (NFB-H or NHB-H) — Typical Packages
- Basic Replacement: $7,500–$10,500 — wall-hung boiler, venting within 10–15 ft, primary/secondary with one circulator, condensate neutralizer, start-up & tune.
- Standard Package: $8,500–$11,900 — adds extended venting (as needed), new isolation/purge valves, backflow, Spirovent®/air separator, and upgraded pump.
- Premium Package: $9,800–$12,900+ — adds zoning (valves or pumps), smart thermostat, and extended piping or relocation work.
Combi-Boiler Replacement (NCB-H or NFC-H) — Typical Packages
- Basic Combi: $8,900–$11,500 — wall-hung combi, venting within 10–15 ft, PRV/expansion tank, mixing valve (as needed), neutralizer, start-up & tune.
- Standard Combi: $10,500–$12,900 — adds DHW recirc tie-in (where applicable), extended venting/gas upgrades, isolation service valves, Spirovent®/air separator.
- Premium Combi: $11,900–$14,500+ — higher-capacity DHW targets, additional zones, relocation, or complex re-piping.
Common Add-Ons (Itemized as Needed)
- Condensate pump: $250–$450 | Neutralizer media kit: $150–$300
- Mixing/tempering valve: $250–$450 | Expansion tank: $200–$350
- Zone panel/valve or pump (each): $300–$700 | Smart/stat: $150–$300
- LP conversion kit & setup: $150–$300 | Water treatment/filter: project-specific
Disposal of old equipment, chimney modifications, or indirect tank tie-ins are priced after site review. Rebates and federal incentives may reduce your net cost.
Rebates & Incentives (Quick Guide)
- National Grid (Nassau/Suffolk): Rebates for qualifying high-efficiency natural gas boilers and controls; amounts vary by AFUE and equipment.
- Federal programs: Check current IRS credits for high-efficiency HVAC components where applicable.
- Local programs: Additional weatherization/electric rebates may be available via PSEG Long Island for home efficiency upgrades.
Eligibility and amounts change—your estimator will confirm model eligibility, AFUE, and required paperwork at time of purchase/installation.
What’s Included in a Professional Installation
- Proper sizing via heat-loss and DHW demand review (combi models)
- Removal and disposal of old equipment (as quoted)
- Wall mounting, level/anchored, and clearances per code and manufacturer
- PVC/CPVC/PP intake & exhaust venting with terminations and supports
- Gas line check (pressure, leak test) and conversion to LP if required
- Primary/secondary piping, circulators or zone valves, purge points, isolation valves
- Condensate neutralizer, trap, and pump (where needed)
- Startup, combustion checks, and controls setup (outdoor reset, DHW priority)
- Owner orientation and warranty registration
FAQs
Q: Is the Navien NCB 240 enough for my home?
A: Often yes for typical Long Island homes, but final sizing depends on heat load and how many fixtures you run at once. Models referenced in searches include NCB 240, NCB 240E, NCB 240 110H, and NCB 240 130H.
Q: What’s the difference between NCB-H and NFC-H?
A: Both are high-efficiency condensing combi boilers. NCB-H covers a wide range of homes; NFC-H offers higher output for larger DHW draws (models like NFC 250 200H and NFC 250 175H).
Q: What is the typical Navien combi boiler price on Long Island?
A: Installed price varies by model and scope. Homeowners often search for navien boiler price and navien combi boiler price as well as model-specific queries like navien ncb 240 110h price or navien nfb 200h price. We provide an itemized estimate after a quick assessment.
Q: Do you handle permits and inspections on Long Island?
A: Yes. We manage permits, inspections, and compliance for Nassau & Suffolk County towns.
Q: How fast can you install?
A: We accommodate urgent timelines; most standard replacements are completed in a day once materials and permits are set.
Q: What warranty and registration do I get?
A: We register your Navien warranty and walk you through coverage details at handover.
What’s the difference between a combi and a boiler-only unit?
A combi boiler (NCB-H, NFC-H) provides both space heating and on-demand domestic hot water in a single wall-hung appliance. A boiler-only unit (NFB-H, NHB-H) provides space heating only and pairs with a separate water heater or an indirect tank.
Do I need new gas lines or venting?
Navien models support long runs of 2″/3″ PVC, CPVC, or polypropylene venting. Many retrofits can reuse 1/2″ gas lines for short distances, subject to code and sizing. Your installer will verify gas supply and vent length/terminations.
What maintenance is required?
Annual service is recommended: inspect and clean the heat exchanger, verify combustion, test safeties, flush as needed, and update controller settings. Proper maintenance protects efficiency and the heat-exchanger warranty.
How long do Navien boilers last?
With correct sizing, water quality, and annual service, life expectancy often approaches 15–20 years. Residential warranties commonly include 10 years on the heat exchanger (see model-specific terms).
Can a combi boiler handle multiple showers?
Yes—within its DHW capacity. For example, higher-capacity combi models can supply around 5 GPM at a 70°F rise. Your installer will size to your fixtures and simultaneous-use expectations.
Ready to Compare Models or Schedule an Estimate?
Call All Island Comfort at 631-591-2290. We’ll match the right Navien model to your home, verify rebates, and give you a written, itemized quote.
Request Estimate — Call or text us or use the estimate form to get a model-specific Navien quote (we’ll consider model tokens like NCB 240 / NCB 240E / NCB 240 110H / NCB 240 130H, NFC 250 / 200H / 175H, and NFB 200H in the quote).