Triangle Tube Challenger CC125 Solo
The Challenger CC125 Solo fires 33 to 125 MBH at 95% AFUE with a 111 MBH DOE capacity — the second-largest Challenger heating-only boiler, appearing as 'Challenger 125Hs' in the archived comparison table. Discontinued years before the November 3, 2025 cessation.
Key figures
- Max input
- 125 MBH
- Max CSA output
- —
- AFUE
- 95 %
- Min input
- 33 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Triangle Tube Challenger CC125 Solo in practice
The CC125 Solo is the upper-middle of the Challenger solo range at 33 to 125 MBH of input, rated 95% AFUE with a 111 MBH DOE capacity and a 97 MBH net AHRI rating. The 2019-era table labels its row 'Challenger 125Hs', and the CC125 submittal confirms the model code behind the marketing name.
The table prints a 6.3:1 turndown for this row even though a 33 MBH minimum against the 125 MBH maximum computes to about 3.8:1 — the same 6.3:1 figure fits the combi CC125's 20 MBH minimum. The research bundle records the discrepancy without reconciling it, so the input range is the reliable figure for sizing. The Challenger was discontinued long before the company's November 3, 2025 cessation; this model is documented for the installed base.
Best suited to
- Owners identifying a CC125-prefixed Challenger solo from its rating plate
- Homes whose original heat-loss load matched the 125 MBH ceiling
- Service work where the solo's 95% AFUE row separates it from the 94% models
Applicability and support
- Model number
- CC125
- Canadian availability
- historical
- Production status
- discontinued
- 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 Triangle Tube. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Heating input, minimum | 33 MBH | The comparison row prints 33 to 125 MBH for the 'Challenger 125Hs'. |
| Heating input, maximum | 125 MBH | The comparison row prints 33 to 125 MBH for the 'Challenger 125Hs'. |
| Output | ||
| DOE heating capacity | 111 MBH | Per the product-page spec table. |
| Net AHRI rating | 97 MBH | Per the product-page spec table. |
| Efficiency | ||
| Efficiency (AFUE) | 95 % | 95% AFUE on the 125Hs row of the 2019 product-comparison table. |
| Operating limits and other | ||
| Turndown ratio | 6.3:1 | The 2019 row prints 6.3:1 against its own 33 MBH minimum, which computes to about 3.8:1; the combi CC125 row prints a 20 MBH minimum that matches 6.3:1 — the research bundle does not reconcile the discrepancy. |
| Fuel | Natural gas or propane | The 2019 comparison table prints NG/LP on every Challenger row. |
Alerts documented for this model
None documented yet.
Frequently asked questions
Is the CC125 Solo the same as the CC125 combi?
No. The CC125 Solo is heating-only at 33 to 125 MBH, while the combi CC125 carries its own row at 20 to 125 MBH with a built-in DHW function and 3.0 GPM of flow at a 70°F rise.
Why does the 125 solo row show a 6.3:1 turndown?
The 2019 table prints 6.3:1 for the '125Hs' row despite its 33 MBH minimum (about 3.8:1 computed). The research bundle records this as an unresolved discrepancy — the printed input range of 33 to 125 MBH is the reliable figure.
Questions about the Triangle Tube Challenger CC125 Solo?
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
- Triangle Tube Challenger CC125 Combi vs SoloComparison
- Triangle Tube Challenger CC85 SoloSame series
- Triangle Tube Challenger CC105 SoloSame series
- Triangle Tube Challenger CC150 SoloSame series
- Triangle Tube Challenger CC85 CombiSame series
- Triangle Tube Challenger CC105 CombiSame series
- Triangle Tube Challenger CC125 CombiSame series
- Challenger series hub
- Buying guide
Sources and verification
- Challenger Solo Installation Manual (official site file) · accessed September 7, 2026
- Challenger Solo User Guide Manual (2011) · accessed September 7, 2026
Facts checked September 7, 2026. Last updated September 7, 2026. Technical reviewer: not yet assigned.