Ideal Exalt Wall Combi 155

The Exalt Wall Combi 155 heats and supplies domestic hot water from one wall-hung appliance. Heating input runs 19,375 to 155,000 BTU/h at 95% AFUE with an 8:1 turndown, a 142 MBH DOE heating capacity and a 123 MBH AHRI net rating. The domestic side is documented at 4.0 GPM at a 70°F rise, 3.7 GPM at 75°F and 3.5 GPM at 80°F, with a 0.5 GPM minimum flow, a 150 psi maximum DHW pressure and a 150°F (65°C) DHW temperature ceiling.

The combi cabinet is taller than the heat-only models at 21.75 x 33 x 16.5 inches and weighs 110 lb, holding 3 gallons. It connects with 3/4-inch gas, 1-inch heating supply/return and 3/4-inch DHW inlets and outlets. Venting is 2-inch up to 33 equivalent feet or 3-inch up to 100 feet, through the same 3-in-1 universal vent adapter used across the Exalt Wall family.

The CTRLMax control includes DHW priority with an optional time-out, outdoor reset and plain-text diagnostics. For townhouses and compact homes the combi replaces the traditional boiler-and-tank pair; households whose simultaneous hot-water demand exceeds the published 4.0 GPM figure step up to the combi 199. Natural-gas (IDEX155C) and propane (IDEX155CLP) 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.