Lochinvar · Noble Fire Tube (NKB/NKC/NCF)
Lochinvar Noble NCF110
The Noble NCF110 is the entry Noble floor-standing combi: 11 to 110 MBH input at 95.0% AFUE, rated for DHW of up to 2.6 GPM at a 77°F rise, on a 290 lb floor cabinet.
Key figures
- Max input
- 110 MBH
- Max CSA output
- —
- AFUE
- 95 %
- Min input
- 11 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Lochinvar Noble NCF110 in practice
The NCF110 is the floor-mounted twin of the NKC110 combi, sharing its 11 to 110 MBH input range, 102 MBH DOE capacity and 95.0% AFUE in the Noble ratings row, and its product page quotes the same DHW figure of up to 2.6 GPM at a 77°F temperature rise. It is the combi choice for basements where a wall-hung unit is not preferred.
The floor cabinet is the physically largest of the 110 Noble combis at 290 lb shipping weight, with space heating on 1" NPT connections and DHW on 3/4" fittings. Venting is 2" or 3" to 100 equivalent feet at this size, and the page lists the same SMART CONTROL features as the wall combi, including the diverter technology aimed at eliminating the cold-water "sandwich" and the air-handler interlock during DHW production. Lochinvar's residential page sells it as Epic in Canada.
Best suited to
- Basement installations that favor a floor-standing combi
- Homes whose heat-loss calculation fits under 110 MBH with on-demand DHW
- Households wanting the Noble 110 combi ratings on a floor frame
Applicability and support
- Model number
- NCF110L
- Canadian availability
- available
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Series terms
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Specifications
Published specifications
Values as published by Lochinvar. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Heating input, minimum | 11 MBH | Per the I&O ratings table. |
| Heating input, maximum | 110 MBH | Per the I&O ratings table. |
| Output | ||
| DOE heating capacity | 102 MBH | DOE heating capacity per the I&O ratings table. |
| AHRI net water rating | 89 MBH | Net AHRI rating based on a piping and pickup allowance of 1.15. |
| Efficiency | ||
| Efficiency (AFUE) | 95 % | 95.0% AFUE per the I&O ratings table. |
| Domestic hot water | ||
| DHW flow at 77°F rise | 2.6 GPM | Up to 2.6 GPM, per the product page for the NCF110. |
| Domestic hot water | On demand from the combi's DHW circuit | Combi models produce DHW directly; the I&O ratings list 3/4" DHW water connections for combi units. |
| Venting and air | ||
| Venting | Category IV sealed combustion; PVC, CPVC, polypropylene or stainless steel | In Canada, plastic venting must be a ULC S636-certified system. |
| Max. equivalent vent/air length, 2" | 100 ft | Table 3D (air intake/vent piping sizes), I&O manual. |
| Max. equivalent vent/air length, 3" | 100 ft | Table 3D (air intake/vent piping sizes), I&O manual. |
| Physical and connections | ||
| Water content | 1.4 gal | Per the I&O ratings table. |
| Space-heating water connections | 1" NPT | Noble ratings: NPT connections are used on combi units, sweat connections on the boiler. |
| DHW water connections | 3/4" | Combi-only, per the I&O ratings table (NPT = combi). |
| Gas connection | 1/2" | Per the I&O ratings table. |
| Shipping weight | 290 lb | Shipping weight per the Lochinvar product page. |
| Height | 47.75 in | Floor-standing combi cabinet, per the Lochinvar product page. |
| Width | 19.25 in | Floor-standing combi cabinet, per the Lochinvar product page. |
Manuals
Alerts documented for this model
- Memory Error
- Fan Speed
- LWCO
- Flame Sequence
- Outlet ARHL
- Air Pressure Switch
- AUX Limit Fault
- Flame Fail: Running
- Flame Fail: Ignition
- Flue Temp Limit
- Flue Temp High
- Outlet MRHL
- Outlet Temp High
- Outlet Temp DIFF
- Flue Sensor Fault
- Outlet Sensor Fault
- Inlet Sensor Fault
- Set Point Met
- Anti-Cycling
- Delta T High
- Low Voltage
- No Flue Temp Change
- Combi Sensor Fault (Combi Only)
- Lockout Inlet Sensor Fault
- Outdoor Sensor Missing
- No Hot Water at Faucets (Combi Only)
- DHW Water is not Hot Enough (Combi Only)
- Combi Boiler is Running but Does Not Supply Heated Water to Space Heating System (Combi Only)
- Space Heating System Heat Emitters Get Hot During a DHW Draw and the Combi Boiler does not Provide Hot Enough Domestic Hot Water (Combi Only)
- Lockout! Water Press Switch
Frequently asked questions
What is the difference between the NCF110 and NKC110?
The ratings are identical — 11 to 110 MBH input, 102 MBH DOE capacity, 95.0% AFUE and DHW to 2.6 GPM at a 77°F rise — but the NKC110 hangs on a wall while the NCF110 is the floor-standing version.
Is the NCF110 a heating-only boiler?
No. The NCF is the Noble floor combi: it produces domestic hot water on demand through its 3/4" DHW connections in addition to space heating.
Questions about the Lochinvar Noble NCF110?
Describe what the boiler is doing and get a straight answer about the next step.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Compare and explore
- Lochinvar Noble NCF110 vs NCF150Comparison
- Lochinvar Noble NKB080Same series
- Lochinvar Noble NKB110Same series
- Lochinvar Noble NKB150Same series
- Lochinvar Noble NKB199Same series
- Lochinvar Noble NKC110Same series
- Lochinvar Noble NKC150Same series
- Lochinvar Noble NKC199Same series
- Lochinvar Noble NCF150Same series
- Lochinvar Noble NCF199Same series
- Noble Fire Tube (NKB/NKC/NCF) series hub
- Buying guide
Sources and verification
- Lochinvar — Noble Combi Gas Boiler Floor Mount (NCF110L) model page · accessed September 7, 2026
- Noble Fire Tube Boiler and Combi I&O/Service Manual, Rev AN · Rev AN · accessed September 7, 2026
Facts checked September 7, 2026. Last updated September 7, 2026. Technical reviewer: not yet assigned.