Ideal Gallant Wall 299
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.
Key figures
- Max input
- 299 MBH
- Max CSA output
- —
- AFUE
- 95 %
- Min input
- 72.5 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Ideal Gallant Wall 299 in practice
The Gallant Wall 299 modulates from 72.5 to 299 MBH input at 95% AFUE, with a 242 MBH AHRI net rating and a 278 MBH DOE heating capacity. Its published turndown is 4.1:1 — lower than the 250 and 399 — but the minimum fire is the same 72.5 MBH as the 399, which matters when sizing a plant that runs at part load for much of the year.
The 299 moves to the larger Gallant chassis: 24.875 x 39.375 x 23.625 inches, 210 lb and 7.4 gallons of water volume, with 1-inch gas, 1-1/2-inch supply/return and 4-inch vent/air connections. It keeps the series' stainless steel fire-tube heat exchanger, ASME certification and ENERGY STAR listing, and the CTRLMax control with four configurable circulator outputs and integrated six-boiler cascade capability.
The model is used in several Gallant Cascade kits, including the CPS800 and larger configurations. Natural-gas (IDGA299) and propane (IDGA299LP) versions are published. No explicit Canadian sales statement was found on the official pages checked on 2026-09-09; the Exalt and Gallant submittals list ANSI Z21.13 and CSA 4.9 compliance, so Boilers.ca records canadianStatus as unknown.
Best suited to
- Commercial and large residential loads between roughly 240 and 299 MBH
- Plants planning larger Gallant Cascade racks
- Projects needing 4-inch venting and 1-1/2-inch water connections
Applicability and support
- Model number
- IDGA299 (NG) / IDGA299LP (LP)
- Canadian availability
- unknown
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Series terms
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 Ideal Heating. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input modulation, minimum (NG & LP) | 72.5 MBH | Per the official model table. |
| Input modulation, maximum (NG & LP) | 299 MBH | Per the official model table. |
| Output | ||
| AHRI net rating | 242 MBH | Per the official model table. |
| DOE heating capacity | 278 MBH | Per the official model table. |
| Efficiency | ||
| Efficiency | 95 % | 95% AFUE per the official model table. |
| Domestic hot water | ||
| Domestic hot water | Heating-only; pair with a separate DHW source | |
| Venting and air | ||
| Vent / air diameter | 4 in | |
| Physical and connections | ||
| Weight | 210 lb | |
| Width | 24.875 in | |
| Height | 39.375 in | |
| Depth | 23.625 in | |
| Operating limits and other | ||
| Turndown ratio | 4.1:1 | Per the official model table. |
| Gas connection | 1 in | |
| Supply / return connections | 1-1/2 in | |
| Water volume | 7.4 gal | Per the official model table. |
Manuals
Frequently asked questions
What is the input range of the Gallant Wall 299?
72.5 to 299 MBH with a 4.1:1 turndown, a 242 MBH AHRI net rating and a 278 MBH DOE heating capacity, at 95% AFUE.
Why is the 299's turndown lower than the 250's?
The official model table prints 4.1:1 for the 299 against 5.5:1 for the 250 and 399, with the same 72.5 MBH minimum input as the 399.
What size connections does the Gallant Wall 299 use?
1-inch gas, 1-1/2-inch supply/return and 4-inch vent/air, per the official model table.
Questions about the Ideal Gallant Wall 299?
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
- Ideal Heating NA — Gallant Wall product page and model table · accessed September 9, 2026
- Ideal Heating NA — Gallant 299 engineering submittal (2023-28) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.