IBC Technologies · DC Series (discontinued)
IBC DC 33-124
The IBC DC 33-124 is a discontinued DC combi rated 33–124 MBH input and 30.4–110.3 MBH output at 94% AFUE, with a 4.0 USgpm maximum DHW flow and 0.5 USG of vessel water.
Key figures
- Max input
- 124 MBH
- Max CSA output
- 110.3 MBH
- AFUE
- 94 %
- Min input
- 33 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
IBC DC 33-124 in practice
The DC 33-124 sits in the upper half of the DC Series: 33–124 MBH CSA input (9.7–36.3 kW) for 30.4–110.3 MBH output (8.9–32.3 kW) at 94% AFUE, with the line's 43.5 psig space-heating coil and 150 psig DHW coil. Its maximum DHW flow reaches 4.0 USgpm, activation is at 0.5 USgpm and DHW water runs 104–149°F.
It weighs 85 lb (39 kg) and holds 0.5 USG (1.9 L); maximum boiler flow is 11 USgpm and the minimum is 3 USgpm, with a 130 W full-fire draw including the internal pump. Venting is 120 equivalent feet in 3" or 35 feet in 2" per side, and the line is approved to 12,000 ft altitude.
IBC's DC model list includes the DC 124, and the specification table carries the 33-124 column, but the DC I&O inventory captured for this record (120-183-A-R11 and 120-183-A-R9) does not name the 33-124 in its coverage. Boilers.ca therefore cites the specification table and the shared DC/HC controller and user documents for this model.
Best suited to
- Owners identifying a DC 33-124 from the model list and spec table
- Mid-size homes where the 110.3 MBH output matches the original sizing
- Technicians who need the DC/HC controller and user documents
Applicability and support
- Model number
- DC 33-124
- 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 IBC Technologies. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input, minimum | 33 MBH | 9.7 kW |
| Input, maximum | 124 MBH | 36.3 kW |
| Output | ||
| CSA output, minimum | 30.4 MBH | 8.9 kW |
| CSA output, maximum | 110.3 MBH | 32.3 kW |
| Efficiency | ||
| Efficiency (AFUE) | 94 % | Per the DC specification table. |
| Domestic hot water | ||
| DHW input | 33 – 124 MBH | 9.7 – 36.3 kW |
| Max. DHW flow rate | 4 USgpm | |
| Flow to activate DHW | 0.5 USgpm | |
| Domestic hot water | Integrated DHW coil in a combination boiler | |
| Venting and air | ||
| Max. equivalent vent length, 3" | 120 ft | Each side. |
| Max. equivalent vent length, 2" | 35 ft | Each side. |
| Physical and connections | ||
| Weight (empty) | 85 lb | 39 kg |
| Pressure vessel water content | 0.5 USG / 1.9 L | |
| Electrical | ||
| Power use at full fire (internal pump) | 130 W | 120 V / 60 Hz. |
| Operating limits and other | ||
| Maximum boiler flow rate | 11 USgpm | |
| Minimum boiler flow rate | 3 USgpm | |
| Fuel | Natural gas or propane | The DC/HC specification table notes conversion kits must be ordered separately. |
| Gas supply pressure | 5 – 14 in. w.c. | |
| Ambient temperature | 32 – 122 °F | 0 – 50°C. |
| Space-heating water temperature | 50 – 194 °F | 10 – 90°C. |
| Domestic hot water temperature | 104 – 149 °F | 40 – 65°C. |
| Max. operating pressure, space-heating coil | 43.5 psig | DHW coil rated 150 psig; the unit ships with a 30 psig pressure relief valve. |
| Altitude rating | 12,000 ft | |
Alerts documented for this model
Frequently asked questions
Is the DC 33-124 in the DC manuals?
The two DC I&O manuals captured for this record list DC 15-95/15-96/20-125/33-160 (R11) and DC 23-84/29-106/20-125/33-160 (R9); neither names the 33-124, so Boilers.ca cites the specification table and the shared DC/HC documents.
How much hot water does the DC 33-124 make?
A maximum DHW flow of 4.0 USgpm, with activation at 0.5 USgpm and DHW temperatures of 104–149°F.
Is the DC 33-124 still sold?
No. The DC Series is discontinued and documented on IBC's Technical Information Portal.
Questions about the IBC DC 33-124?
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
- IBC Technical Information Portal — DC series specification table · accessed September 9, 2026
- IBC Technical Information Portal — DC series model list · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.