Description

Who the Navien NCB-190/080H suits

The Navien NCB-190/080H is a condensing combi-boiler, which means one wall-hung unit handles both your home heating (radiators, baseboard or in-floor heat) and your domestic hot water, replacing a separate boiler and water heater. It is the second-smallest heating size in Navien’s NCB-H line, with a heating input of 11,000 to 80,000 BTU/h (74,000 BTU/h heating capacity) and a hot-water input of up to 160,000 BTU/h. Navien’s flow table lists 6.4 GPM at a 45°F temperature rise and 4.1 GPM at a 70°F rise. In a northern Illinois winter, incoming water is cold enough that the 70°F figure is the realistic one, so this unit fits a smaller to mid-size single-family home where a shower and one other hot-water fixture may run at the same time. If your home needs more heating output or more simultaneous hot water, GSHA will size you into a larger NCB-H model. It is rated for indoor wall-hung, single-family residential installation only.

Benefits you will notice

• One appliance, two jobs. Heating and on-demand hot water come from a single cabinet measuring 17.3 in. wide by 29.3 in. tall by 12.8 in. deep, which frees the floor space a tank water heater and a floor-standing boiler would take.
• 95% AFUE, ENERGY STAR certified. AFUE is the heating-efficiency rating; 95% means most of the fuel you pay for becomes heat in your home. Condensing operation captures heat from the exhaust that older boilers send up the chimney, which is why the unit can vent through PVC pipe and needs a condensate drain.
• Modulating burner reduces short cycling. Turndown ratio describes how low the burner can throttle. Navien lists 15:1 for hot water and up to 7.3:1 for heating on this model, so the boiler can run at low fire on mild days instead of switching on and off.
• Stainless steel heat exchangers. Navien uses dual condensing stainless steel heat exchangers plus a stainless steel DHW heat exchanger, and the unit carries an ASME “H” stamp.
• Built for zoned homes. The control board has powered connections for 3 zone pumps and 3 zone valves, and the built-in DHW module includes the boiler pump, mixing valve and 3-way valve, so fewer external parts are needed.
• Flexible venting and gas. Vent runs of up to 65 ft with 2 in. PVC or up to 150 ft with 3 in. pipe give GSHA options for routing, and the unit is field-convertible between natural gas and propane with the conversion kit Navien includes.

Price and installation estimate

Installed from $10,401.19. This is a complete installed package from GSHA Services, LTD, not an equipment-only price. The standard combi-boiler installation includes:

• Setting and leveling the unit
• Water piping modifications and gas line modification with a new gas valve
• New condensate drain line and a new 150 lb pressure relief valve
• 4.8-gallon hydronic expansion tank and a domestic hot-water thermal expansion tank
• Navien primary manifold kit and NaviClean magnetic filter
• Commissioning kit (Protector F1 and Cleaner F3)
• New PVC flue venting
• Removal and disposal of the old equipment
• Start-up, testing and a safety inspection

Every boiler installation is custom. The “Installed from” price is the starting installed package for this model with GSHA’s standard installation scope; your final price is confirmed by a free on-site estimate. What changes it: the venting route and length, gas line capacity, condensate drain routing, piping and zoning changes (circulators, zone valves, expansion tank and air separation), water-quality treatment, electrical work, removal of the old boiler, permits, and accessories such as NaviLink controls or manifolds, which are priced separately. Financing available with approved credit.

Schedule Boiler Repair | Request a Boiler Installation Estimate or call (224) 220-3660

Your final quote can change based on gas line capacity and length, the venting route and length, where the condensate can drain, water quality treatment, electrical work, zoning and piping changes to your existing heating system, permits, optional accessories such as NaviLink Wi-Fi control or a NaviCirc recirculation valve, and how accessible the installation area is. The estimate is free.

Financing available with approved credit. See financing options.

Request an Installation Estimate or call (224) 220-3660.

Navien NCB-190/080H specifications

Specification	Value	Source
Product type	Condensing combi-boiler, indoor wall-hung, single-family residential	Navien model page
Heating input	11,000 to 80,000 BTU/h	Navien model page
Heating capacity	74,000 BTU/h (net AHRI water rating 64,000 BTU/h)	Navien model page
Domestic hot water input	10,000 to 160,000 BTU/h	Navien model page
AFUE	95.0% (DOE test procedure)	Navien model page
ENERGY STAR	Yes; AHRI number 205661697	Navien model page
Hot water flow rate	8.2 GPM at 35°F rise; 6.4 GPM at 45°F; 4.1 GPM at 70°F; minimum flow 0.5 GPM	Navien model page
Turndown ratio	15:1 domestic hot water; up to 7.3:1 heating	Navien model page
Heat exchangers	Dual condensing stainless steel; stainless steel DHW heat exchanger; ASME “H” stamp	Navien model page
Zoning	Powered connections for 3 zone pumps and 3 zone valves	Navien model page
Venting	Direct vent; 2 in. PVC/CPVC/polypropylene up to 65 ft or 3 in. up to 150 ft; 0 in. clearance to combustibles	Navien model page
Gas type	Natural gas or propane, field convertible (conversion kit included)	Navien model and series pages
Water temperatures	Heating supply 77-185°F; DHW setting 86-140°F	Navien model page
Connections	1 in. heating supply/return; 3/4 in. domestic hot water	Navien model page
Electrical	120 V AC, 60 Hz, up to 15 A	Navien model page
Dimensions	17.3 in. W x 29.3 in. H x 12.8 in. D	Navien model page
Weight	87 lb (93 lb with water)	Navien model page
Wi-Fi control	Optional NaviLink or NaviLink Lite (not built in)	Navien series page
Recirculation	Optional NaviCirc valve (no built-in buffer tank)	Navien series page

Installation and warranty

GSHA Services, LTD is a Navien Service Specialist (NSS) and an authorized Navien dealer, listed on Navien’s installer locator at navieninc.com, with Navien Level 3 trained technicians. A combi-boiler installation involves both the heating side and the plumbing side of your home, so GSHA’s estimate visit checks the existing gas line, venting route, condensate drain, zoning and water quality before quoting. Optional add-ons priced in our price book include the NaviCirc recirculation valve ($99.60), which uses your existing hot and cold lines to shorten hot-water wait time when there is no dedicated return line, NaviLink Lite Wi-Fi control ($153.55) and NaviLink Wi-Fi control ($288.43); Navien lists all three as compatible with the NCB-H series.

Navien residential limited warranty (NCB-H): 1 year labor, 5 years parts and 10 years on the heat exchanger for single-family residential installations. Navien’s terms require installation by a properly licensed contractor and operation according to the manual; the warranty is void for units bought online or through unauthorized channels and for commercial or multi-dwelling use. The homeowner or installer must provide the installation date to Navien; if it is unavailable, Navien uses six months after the manufacture date as the start of coverage.

GSHA Install-Right coverage: GSHA’s combi-boiler package adds 5-year labor and 5-year parts coverage on top of Navien’s warranty. Labor coverage is valid only with annual GSHA maintenance, and service by others voids GSHA’s labor coverage. GSHA’s Install-Right coverage is separate from Navien’s limited warranty, which has its own terms listed above.

Frequently asked questions

How much does a Navien NCB-190/080H cost installed?

GSHA’s installed package for the NCB-190/080H starts from NCB-190/080H0,401.19. That covers the unit and the standard combi-boiler installation listed above; items such as long vent runs, gas line upgrades, zoning changes or accessories are quoted separately after a free estimate visit.

Is the NCB-190/080H big enough for my home?

It provides up to 80,000 BTU/h of heating input and 4.1 GPM of hot water at a 70°F rise, which fits a smaller to mid-size single-family home. GSHA sizes the boiler from your home’s heat loss and the number of fixtures you expect to run at once; the larger NCB-240/110H, NCB-240/130H and NCB-250/150H are available when more output is needed.

Does the “190” in the model number mean 190,000 BTU/h?

No. The second number is the heating input in thousands of BTU/h (080 = 80,000 BTU/h), but the first number is not the hot-water input. Navien rates this model at up to 160,000 BTU/h for domestic hot water, so use the published inputs when comparing models.

What venting does the NCB-190/080H need?

It is a direct-vent condensing appliance that can use 2 in. PVC up to 65 ft or 3 in. pipe up to 150 ft. Because it condenses exhaust moisture, it also needs a condensate drain, which is included in GSHA’s standard installation.

Can I add Wi-Fi control or recirculation later?

Yes. NaviLink and NaviLink Lite Wi-Fi controls and the NaviCirc recirculation valve are optional Navien accessories for the NCB-H series and can be added at installation or afterward.

What warranty comes with the unit?

Navien covers single-family residential installations for 1 year labor, 5 years parts and 10 years on the heat exchanger. GSHA adds 5-year labor and 5-year parts coverage, conditional on annual GSHA maintenance; service by others voids GSHA’s labor coverage.

Navien NCB-H boiler questions homeowners ask

Do you install and repair Navien NCB-H boilers in my city?

Yes. GSHA Services, LTD installs, services and repairs Navien boilers, including this Navien NCB-H model, across McHenry County and Lake County, Illinois, the northern and western Chicago suburbs and southeastern Wisconsin, from our Woodstock and Lake Bluff locations. GSHA is a Navien Service Specialist (NSS), approved June 30, 2026, is listed on Navien’s installer locator at navieninc.com, and sends Navien Level 3 trained technicians. Check the service-area page if you are near the edge of the area, or call (224) 220-3660.

Can my existing or discontinued Navien boiler be repaired?

Yes. GSHA Services, LTD repairs existing Navien boilers and combi-boilers within its service area, including earlier NCB models that Navien no longer sells. A discontinued model does not automatically need to be replaced; if parts are available and the heat exchanger is sound, repair is usually the sensible first step. As a Navien Service Specialist (NSS), GSHA diagnoses the fault, checks parts availability and gives you a repair-or-replace recommendation before any work starts.

What is the difference between a combi boiler and a heating-only boiler?

This Navien NCB-H model is a combi boiler: one appliance that heats your home through radiators, baseboard or radiant floors and also makes domestic hot water for showers and taps on demand, without a storage tank. A heating-only boiler such as the Navien NHB-H or NFB-H heats the home only; for hot water it needs an indirect water heater or a separate water heater. A tankless water heater makes domestic hot water only and does not heat the house. The combi saves space and a second appliance, but the free on-site estimate confirms it can meet both your heating load and your hot-water demand.

Is this boiler for steam or hot-water heating?

This Navien NCB-H model is a hot-water (hydronic) boiler only; it is not a steam boiler and is not rated for steam in any size. It suits homes with hot-water baseboard, radiators or radiant floor loops. If your home has a steam system (one-pipe radiators with air vents, a sight glass on the boiler), it needs a steam boiler, not this model. The free on-site estimate confirms which system your home has.

What does installation include and what can change the price?

GSHA’s standard installed package for this Navien NCB-H model includes setting and leveling the boiler, water piping modifications, gas line modification with a new gas valve, a new condensate drain line, a new relief valve, a hydronic expansion tank and a domestic hot-water thermal expansion tank, the Navien primary manifold kit, a NaviClean magnetic filter, the system commissioning kit (cleaner and protector), new PVC flue venting, removal and disposal of the old equipment, and start-up, testing and a safety inspection. Every installation is custom, so the venting route, gas line capacity, condensate drainage, piping and zoning changes, water treatment, electrical work, permits and accessories such as NaviLink or extra manifolds can change the final price. The free on-site estimate confirms it.

When does repair make more sense than replacement?

Repair usually makes sense when the boiler is younger, the heat exchanger is sound, the fault is a single part such as a sensor, igniter, pump or gas valve, and parts are available. Replacement becomes the better choice when a heat exchanger is leaking or cracked, repairs are repeating every season, parts for an older model are hard to get, the unit is undersized or oversized for the home, or there is a venting or gas safety concern. An older non-condensing boiler running well below 90% AFUE is another reason to compare the two. GSHA gives you both options with honest reasoning during a service visit or a free on-site estimate.

Get an installation estimate

GSHA Services, LTD installs and services Navien combi-boilers from our Woodstock and Lake Bluff, IL locations across McHenry County, Lake County, the surrounding Chicago suburbs and southeastern Wisconsin. Check our service area, compare the NCB-190/060H and NCB-240/110H, or see all Navien boilers and combi-boilers with prices and our boiler installation services. Navien tankless water heaters are covered on the Navien water heaters page.

Request an Installation Estimate or call (224) 220-3660.