Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The Exalt Floor 110 and 155 are the two smaller floor-standing models and share the 22 x 41 x 22 inch chassis, the Caleffi 548 separator, the pre-installed circulator and the 8:1 turndown. The 155 adds 45,000 BTU/h of ceiling (155,000 vs 110,000 BTU/h) with a higher 19,375 BTU/h minimum fire and 12 lb more weight.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Ideal Exalt Floor 110 | Ideal Exalt Floor 155 |
|---|---|---|
| Input, minimum (NG & LP) | 13.75 MBH | 19.375 MBH |
| Input, maximum (NG & LP) | 110 MBH | 155 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| Turndown ratio | 8:1 | 8:1 |
| DOE heating capacity | 102 MBH | 142 MBH |
| AHRI net rating | 89 MBH | 123 MBH |
| Weight | 145 lb | 157 lb |
| Water volume | 2 gal | 3 gal |
| Domestic hot water | Heating-only; pair with a separate DHW source | Heating-only; pair with a separate DHW source |
Both models are floor-standing, heat-only condensing boilers at 95% AFUE with an 8:1 turndown and a stainless steel fire-tube heat exchanger. The 110 fires 13,750 to 110,000 BTU/h (102 MBH DOE capacity, 89 MBH AHRI net); the 155 fires 19,375 to 155,000 BTU/h (142 MBH DOE, 123 MBH AHRI).
The floor platform's distinguishing equipment is shared: a Caleffi 548 series separator with air elimination and a pre-installed internal circulator, with water and gas connections available on either side. Both list an integrated cascade function for up to six boilers and the same venting options — 2-inch up to 33 equivalent feet or 3-inch up to 100 feet.
The differences are capacity and weight: the 155 is 157 lb with 3 gallons of water volume against 145 lb and 2 gallons for the 110, in the same 22 x 41 x 22 inch cabinet. As heat-only models, both need a separate domestic hot water source; the choice follows the room-by-room heat-loss calculation.
Ideal Heating
The Ideal Exalt Floor 110 is the smallest floor-standing Exalt model: 13,750 to 110,000 BTU/h at 95% AFUE with an included Caleffi 548 separator, a pre-installed circulator and cascade control for up to six boilers.
Ideal Heating
The Ideal Exalt Floor 155 is the mid-range floor-standing Exalt model: 19,375 to 155,000 BTU/h at 95% AFUE, 8:1 turndown and a 157 lb chassis with the Caleffi 548 separator and integrated circulator.
A Caleffi 548 series separator with air elimination, a pre-installed internal circulator and left-or-right water and gas connections, per the official model table.
The 110, at 13,750 BTU/h minimum against the 155's 19,375 BTU/h.
Both share the 22 x 41 x 22 inch cabinet; the 155 weighs 157 lb against 145 lb and holds 3 gallons against 2.
A consultation includes a heat-loss review so the size is right the first time.
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.