Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
Boilers.ca is a brand of ROMA Heating & Cooling · Licensed gas contractor LGA0202903
IBC Technologies · Series
The IBC EX Series is a current commercial floor-standing condensing boiler line sold in four sizes — EX 400, EX 500, EX 700 and EX 850 — with up to 97.9% thermal efficiency, a touchscreen control and 10:1 turndown.
Series facts
Thermal efficiency (ANSI/AHRI-1500) is 97.9% on the EX 400, 97.5% on the EX 500 and 97.0% on the EX 700 and EX 850.
IBC describes the EX Series as a floor-mounted commercial condensing boiler with an intuitive touchscreen control, remote access, multi-boiler communication, 10:1 turndown and up to 97.9% thermal efficiency. Four models are published: EX 400, EX 500, EX 700 and EX 850, with CSA input ranges of 40–399, 50–500, 70–700 and 85–850 MBH and CSA outputs of 388, 485, 679 and 824.5 MBH.
The models share a platform but split into two connection groups: the EX 400 and EX 500 use a 4" flue and 2" NPT-M water connections with 170 equivalent feet of vent per side, while the EX 700 and EX 850 step up to a 6" flue and 2½" NPT-M water connections with 120 equivalent feet per side. IBC notes that the 700 and 850 combustion air must transition to 6" within three feet of the 4" collar. All four are approved to 12,000 ft, rated 160 psig maximum operating pressure with a 50 psig relief valve supplied (alternatives of 30, 100, 125 and 150 psig are available).
Efficiency is published as thermal efficiency to ANSI/AHRI-1500: 97.9% on the EX 400, 97.5% on the EX 500 and 97.0% on the EX 700 and EX 850. The series documentation set includes the I&O manual 120-327E10, user guidelines 120-329E3 and a quick-reference guide 120-370E2.
Highlights
Models
One canonical page per model with input, output and efficiency kept separate.
IBC Technologies
The IBC EX 400 is the smallest floor-standing EX Series commercial boiler: 40–399 MBH input, 388 MBH output, 97.9% thermal efficiency, 4" venting to 170 equivalent feet and 2" NPT-M water connections.
IBC Technologies
The IBC EX 500 is a floor-standing commercial condensing boiler rated 50–500 MBH input and 485 MBH output at 97.5% thermal efficiency, with 4" venting to 170 equivalent feet and 2" NPT-M water connections.
IBC Technologies
The IBC EX 700 is a floor-standing commercial condensing boiler rated 70–700 MBH input and 679 MBH output at 97.0% thermal efficiency, with a 6" flue, 2½" NPT-M water connections and 120 equivalent feet of vent per side.
IBC Technologies
The IBC EX 850 is the largest EX Series boiler: 85–850 MBH input, 824.5 MBH output at 97.0% thermal efficiency, a 6" flue, 2½" NPT-M water connections and 120 equivalent feet of vent per side.
| Specification | IBC EX 400 | IBC EX 500 | IBC EX 700 | IBC EX 850 |
|---|---|---|---|---|
| CSA input, minimum | 40 MBH | 50 MBH | 70 MBH | 85 MBH |
| CSA input, maximum | 399 MBH | 500 MBH | 700 MBH | 850 MBH |
| CSA output | 388 MBH | 485 MBH | 679 MBH | 824.5 MBH |
| afue | — | — | — | — |
| turndown | — | — | — | — |
| vent-max-3 | — | — | — | — |
| vent-max-2 | — | — | — | — |
| Weight (empty) | 414 lb | 441 lb | 486 lb | 510 lb |
Read the full comparison: IBC EX 400 vs EX 500 →
Read the full comparison: IBC EX 500 vs EX 700 →
Error codes and alerts
Manuals
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.
Services for IBC Technologies boilers
Yes. IBC lists the EX Series on its Canadian site, and the Technical Information Portal publishes the EX commercial specification table and manuals.
The larger pair uses a 6" flue, 2½" NPT-M water connections and shorter 120-ft vent runs versus the 4" flue, 2" NPT-M water and 170-ft runs on the 400/500; CSA outputs are 388/485 MBH against 679/824.5 MBH.
Yes. IBC markets it as a high-efficiency condensing commercial boiler and publishes thermal efficiencies from 97.0% to 97.9%.
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
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.