HTP EFTU-110WCN
The HTP EFTU-110WCN is the 110 MBH class wall-hung combi of the Elite Fire Tube Ultra line: 11.0 to 110 MBH input for central heating and the same range for domestic hot water, 95% DOE AFUE, 101 MBH DOE heating capacity and up to 2.6 GPM of DHW at a 77 °F rise.
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.
HTP EFTU-110WCN in practice
The EFTU-110WCN is a wall-hung combination boiler of HTP's current Elite Fire Tube Ultra line — the code reads wall-hung (W), combi (C), natural gas (N), with propane conversion kits included. It fires 11.0 to 110.0 MBH for central heating and the same printed 11.0–110.0 MBH range for domestic hot water, at 95% DOE AFUE with 101 MBH DOE heating capacity and a 88 MBH net AHRI water rating. The official table prints DHW flows of 5.8 GPM at a 35 °F rise, 4.5 GPM at 45 °F and 2.6 GPM at 77 °F, with 1.5 gal of boiler water content and a 110 lb shipping weight.
It uses the SA-240-S43932 stainless steel vertical fire-tube heat exchanger (down-fired, ASME 'H') shared by the line, a 10:1 turndown, built-in ECM pump and the AristonThermo GALEVO2 control with LCD. The 85–150 sizes vent in 2" or 3" pipe — exhaust runs 6–150 ft in 3" (6–100 ft in 2" where allowed) and the intake 0–150 ft in 3" (0–100 ft in 2" where allowed), in PVC, CPVC, polypropylene or stainless steel, as a Category IV sealed-combustion direct-vent appliance. CH connections are 1-1/4" male NPT with 3/4" NPT gas; DHW inlet and outlet are 3/4" NPT on the combi models.
The combi models add the DHW setpoint range of 97–149 °F and produce domestic hot water directly, removing the separate tank. HTP backs the EFTU with a 15-year limited residential warranty when registered online. Boilers.ca records no official statement of Canadian sales, so canadianStatus stays 'unknown'; gas and combustion work belongs with a licensed contractor against LP-723 (Revision date 2.23.22).
Best suited to
- Homes whose heat-loss calculation and hot-water draw fit a 110 MBH wall-hung combi
- Projects replacing a tank plus boiler with one wall-hung appliance
- Installations running 2" or 3" vent pipe in PVC, CPVC, polypropylene or stainless steel
Applicability and support
- Model number
- EFTU-110WCN
- Canadian availability
- unknown
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Not verified
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 HTP. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Central-heating input, minimum (natural gas) | 11 MBH | 11,000 BTU/hr per the official model table. |
| Central-heating input, maximum (natural gas) | 110 MBH | 110,000 BTU/hr per the official model table. |
| Output | ||
| Heating capacity (DOE) | 101 MBH | DOE heating capacity as printed in the official model table. |
| Net AHRI rating, water | 88 MBH | Net AHRI water rating as printed in the official model table. |
| Efficiency | ||
| DOE AFUE | 95 % | DOE AFUE as printed in the official model table (LP-740/LP-742). |
| Domestic hot water | ||
| DHW input, minimum | 11 MBH | 11,000 BTU/hr — the combi's DHW input range is printed equal to its CH range. |
| DHW input, maximum | 110 MBH | 110,000 BTU/hr — the combi's DHW input range is printed equal to its CH range. |
| DHW flow rate at 35 °F rise | 5.8 gpm | Domestic hot water flow per the official combi table. |
| DHW flow rate at 45 °F rise | 4.5 gpm | Domestic hot water flow per the official combi table. |
| DHW flow rate at 77 °F rise | 2.6 gpm | Domestic hot water flow per the official combi table. |
| Venting and air | ||
| Venting | Exhaust 2" (6–100 ft) or 3" (6–150 ft); intake 2" (0–100 ft) or 3" (0–150 ft) | Category IV, sealed-combustion direct vent / power vent. PVC, CPVC, polypropylene or stainless steel approved. Per LP-723, 199/199C models must be vented in 3" diameter pipe; all other models ship with 3" connections and may be reduced to 2". |
| Physical and connections | ||
| Shipping weight | 110 lb | Shipping weight as printed in the official model table. |
| Approximate full boiler weight | 107 lb | Approximate full boiler weight as printed in the official model table. |
| Boiler water content | 1.5 gal | Boiler water content as printed in the official model table. |
| Dimensions (W x H x D) | 19.75" x 38.25" x 17" | The 85–150 sizes share the 17" deep cabinet. |
| Gas supply pressure | Natural gas 3.5"–10.5" w.c.; LP 8"–13" w.c. | As printed in the LP-742 submittal technical table. |
| Water pressure | Heat-exchanger MAWP 50 psi; pressure-relief valve 30 psi | Water-pressure switch minimum 8 psi; freeze protection built in. |
| Heat exchanger | SA-240-S43932 stainless steel vertical fire tube (ASME 'H'), down-fired | Chromium stainless steel vertical fire-tube design per LP-723 and the LP-742 submittal. |
| Electrical | ||
| Power supply | 120 V / 60 Hz, less than 12 A | |
| Operating limits and other | ||
| Fuel | Natural gas or propane | All models ship ready to operate on natural gas and come standard with liquid-propane conversion kits, per the product page. |
| Setpoint temperature ranges | CH 68–122 °F low / 86–179 °F high; DHW 97–149 °F | Combi model setpoint ranges as printed in the LP-742 submittal. |
| Control | AristonThermo LCD display / AristonThermo GALEVO2 control | Built-in ECM pump, 3-way valve and built-in bypass; DHW priority logic per LP-723. |
| Warranty | 15-year limited residential warranty when registered online | Per the EFTU product page and the LP-707 warranty document. |
Manuals
- HTP EFTU (Elite Fire Tube Ultra) Boiler and Combi Installation and Operation Manual — LP-723, Revision date 2.23.22LP-723 (2.23.22) · 2022-02-23
Alerts documented for this model
- Er:10
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- Er:61
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- Er:94
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- NOAVL
- EMERG
Frequently asked questions
How much hot water does the EFTU-110WCN deliver?
The official table prints 5.8 GPM at a 35 °F rise, 4.5 GPM at 45 °F and 2.6 GPM at a 77 °F rise, with DHW input matching the central-heating range of 11.0 to 110 MBH.
Does the EFTU-110WCN need a separate hot-water tank?
No — the WCN models are combis: the boiler produces domestic hot water directly at the printed DHW setpoint range of 97–149 °F. The WBN boiler models need an indirect tank.
Can the EFTU-110WCN vent in 2" pipe?
Yes, on the non-199 sizes: exhaust 2" pipe runs 6–100 ft and intake 2" pipe 0–100 ft; 3" extends the runs to 150 ft.
Questions about the HTP EFTU-110WCN?
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
- HTP EFTU-110WCN vs EFTU-150WCNComparison
- HTP UFT-80WSame series
- HTP UFT-100WSame series
- HTP UFT-120WSame series
- HTP UFT-140WSame series
- HTP UFT-175WSame series
- HTP UFT-199WSame series
- HTP EFTU-85WBNSame series
- HTP EFTU-110WBNSame series
- HTP EFTU-150WBNSame series
- HTP EFTU-199WBNSame series
- HTP EFTU-150WCNSame series
- HTP EFTU-199WCNSame series
- Ultra (UFT & EFTU) series hub
- Buying guide
Sources and verification
- HTP — Elite Fire Tube Ultra condensing boiler (EFTU model table) · accessed September 8, 2026
- EFTU Installation and Operation Manual, LP-723 (Revision date 2.23.22) · accessed September 8, 2026
- HTP (Heat Transfer Products) — official site · accessed September 8, 2026
Facts checked September 8, 2026. Last updated September 8, 2026. Technical reviewer: not yet assigned.