Smith Cast Iron Boilers · GVX Series (discontinued)
Smith GVX-105
The Smith GVX-105 is a discontinued residential cast-iron water boiler rated 105 MBH AGA input with 87 MBH DOE heating capacity, 76 MBH net I=B=R and 82% AFUE, offered with an optional power vent.
Key figures
- Max input
- 105 MBH
- Max CSA output
- —
- AFUE
- 82 %
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Smith GVX-105 in practice
The GVX-105 is one of the GVX sizes in Smith's discontinued residential cast-iron water boiler line. BSG-10 prints 105 MBH AGA input, 87 MBH DOE heating capacity, 76 MBH net I=B=R water and 82% AFUE, and notes that the GVX model offers an optional power vent. The line runs on natural or propane gas with intermittent ignition.
Smith's official navigation marks the GVX '(Discontinued)'. No per-size GVX connection table was captured; the BSG-10 ratings are the only printed per-model data, so the connection spec records that fact rather than guessing a size. The model is kept for legacy reference with productStatus discontinued.
Best suited to
- Legacy GVX owners looking up printed ratings for service or replacement comparison
- Replacement planning where the existing GVX size must be matched against a current boiler
Applicability and support
- Model number
- GVX-105
- Canadian availability
- unknown
- 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 Smith Cast Iron Boilers. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| AGA input (as printed) | 105 MBH | AGA input printed in BSG-10. |
| Output | ||
| DOE heating capacity | 87 MBH | Printed in BSG-10. |
| Net I=B=R water rating | 76 MBH | Printed in BSG-10. |
| Efficiency | ||
| AFUE | 82 % | Printed in BSG-10. |
| Venting and air | ||
| Venting | Optional power vent (GVX model) per BSG-10; no per-size vent table printed | BSG-10 series copy: 'Optional power vent (GVX model)'. |
| Physical and connections | ||
| Supply / return tappings | not printed in the captured documents | No GVX connection table was captured; only the BSG-10 ratings are official per-model data. |
| Operating limits and other | ||
| Fuel | Natural gas or propane | BSG-10: 'available in five sizes ranging from 70 to 195 MBH in both natural and propane gas with intermittent ignition systems' (five sizes applies to the GBX; the GVX table prints four sizes). |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
Is the Smith GVX-105 still made?
No. Smith's official site navigation marks the GVX line '(Discontinued)'. The BSG-10 selection guide remains public for legacy reference.
What are the GVX-105 ratings?
BSG-10 prints 105 MBH AGA input, 87 MBH DOE heating capacity, 76 MBH net I=B=R water and 82% AFUE.
Questions about the Smith GVX-105?
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.
Sources and verification
- Smith Cast Iron Boilers — home (nav marks GVX '(Discontinued)'; 'Optional power vent (GVX model)') · accessed September 9, 2026
- Smith — Boiler Selection Guide BSG-10 (GBX/GVX specifications) · BSG-10 · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.