Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Ideal Heating · Series
The Gallant Wall is Ideal Heating North America's larger wall-hung condensing boiler line for residential and light-commercial loads: the 250, 299 and 399 MBH heat-only models, up to 5.5:1 turndown, ASME-certified with an integrated cascade function for up to six boilers.
Series facts
95% AFUE on the 250 and 299; the 399 prints 95.1%, which the page footnotes as thermal efficiency.
The Gallant Wall line sits above the Exalt series in capacity: three heat-only wall-hung condensing models — 250, 299 and 399 MBH — with published input modulation ranges of 53.6–240 MBH (250), 72.5–299 MBH (299) and 72.5–399 MBH (399). The page prints 95% AFUE for the 250 and 299 and 95.1% for the 399, footnoted as thermal efficiency, with AHRI net ratings of 192, 242 and 330 MBH and DOE heating capacities of 222, 278 and 379 MBH.
The series uses a stainless steel fire-tube heat exchanger with full modulation and turndown ratios of 5.5:1 (250), 4.1:1 (299) and 5.5:1 (399). The CTRLMax control system is described as configurable in 60 seconds or less for standard installations, with four fully configurable circulator outputs, two reset curves and set points, quiet operation and an integrated cascade function for up to six boilers. The 250 is a 3-inch vent model at 140 lb with 3/4-inch gas and 1-1/4-inch supply/return connections; the 299 and 399 step up to 4-inch venting, 1-inch gas and 1-1/2-inch water connections at 210 and 216 lb.
Both sizes list natural-gas and propane versions (IDGA250 / IDGA250LP and so on), ASME certification and ENERGY STAR listing. For BC projects the Gallant Wall line covers larger homes and small commercial plants that still want a wall-hung boiler, and the published engineering submittals and installation manual document the series for specification work. As with the rest of the North American catalogue, canadianStatus is recorded as unknown because no explicit Canadian sales statement was found on the official pages checked on 2026-09-09.
Highlights
Ideal Advantage warranty program, as published on the Exalt product pages: Standard — 2-year parts and 10-year primary heat exchanger; Plus — 5-year parts, 2-year labour allowance and 10-year primary heat exchanger with registration; Elite — 6-year parts, 3-year labour and 12-year heat exchanger with registration, combustion analysis and hydronic system treatment.
Models
One canonical page per model with input, output and efficiency kept separate.
Ideal Heating
The Ideal Gallant Wall 250 is the smallest Gallant model: 53.6 to 240 MBH input at 95% AFUE, 5.5:1 turndown and a 140 lb wall-hung cabinet with 3-inch venting and an integrated six-boiler cascade function.
Ideal Heating
The Ideal Gallant Wall 299 is the mid-size Gallant model: 72.5 to 299 MBH input at 95% AFUE with a 4.1:1 turndown, stepping up to the larger 210 lb chassis with 4-inch venting and 1-inch gas.
Ideal Heating
The Ideal Gallant Wall 399 is the largest Gallant model: 72.5 to 399 MBH input with a 5.5:1 turndown, a 330 MBH AHRI net rating and a printed 95.1% figure the page footnotes as thermal efficiency.
| Specification | Ideal Gallant Wall 250 | Ideal Gallant Wall 299 | Ideal Gallant Wall 399 |
|---|---|---|---|
| Input modulation, minimum (NG & LP) | 53.6 MBH | 72.5 MBH | 72.5 MBH |
| Input modulation, maximum (NG & LP) | 240 MBH | 299 MBH | 399 MBH |
| output-max | — | — | — |
| Efficiency | 95 % | 95 % | 95.1 % |
| Turndown ratio | 5.5:1 | 4.1:1 | 5.5:1 |
| vent-max-3 | — | — | — |
| vent-max-2 | — | — | — |
| Weight | 140 lb | 210 lb | 216 lb |
Read the full comparison: Ideal Gallant Wall 250 vs 299 →
Read the full comparison: Ideal Gallant Wall 299 vs 399 →
Read the full comparison: Ideal Gallant Wall 250 vs Wall 399 →
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 Ideal Heating boilers
The published modulation ranges are 53.6 to 240 MBH for the 250, 72.5 to 299 MBH for the 299 and 72.5 to 399 MBH for the 399, with AHRI net ratings of 192, 242 and 330 MBH respectively.
Yes. The series lists an integrated cascade function for up to six boilers, and the separate Gallant Cascade rack packages join 2 to 5 boilers for total inputs of 500 to 2,000 MBH.
The 299 and 399 use 4-inch vent/air connections; the 250 uses 3-inch. The series also has a published vent supplement with the detailed installation requirements.
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.