Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Both the Peerless PureFire PF-80 and the Peerless PureFire PF-110 belong to the Peerless Boilers PureFire line of condensing boilers. Published ratings: Peerless PureFire PF-80 at 20–80 MBH input, 75 MBH heating capacity and 95% AFUE; Peerless PureFire PF-110 at 27.5–110 MBH input, 103 MBH heating capacity and 95% AFUE. Peerless PureFire PF-110 lists 30 MBH more input than Peerless PureFire PF-80 (110 MBH against 80 MBH). Both list the same published AFUE of 95%. Peerless PureFire PF-110 lists 20 lb more shipping weight than Peerless PureFire PF-80 (108 lb against 88 lb).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Peerless PureFire PF-80 | Peerless PureFire PF-110 |
|---|---|---|
| Input, minimum | 20 MBH | 27.5 MBH |
| Input, maximum | 80 MBH | 110 MBH |
| Heating capacity | 75 MBH | 103 MBH |
| Net water rating | 65 MBH | 90 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| Domestic hot water | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater |
| Approx. shipping weight | 88 lb | 108 lb |
| Dimensions (A × B × C) | 13-3/4" × 17-3/16" × 29-1/2" | 19-3/8" × 17-3/16" × 29-1/2" |
| Exhaust vent / air intake | 3" | 3" |
| Approved vent materials | PVC, CPVC, AL29-4C stainless or polypropylene (Category IV, positive pressure) | PVC, CPVC, AL29-4C stainless or polypropylene (Category IV, positive pressure) |
| Supply/return connections | 1" NPT | 1" NPT |
| Gas connection | 1/2" NPT | 1/2" NPT |
| Electrical | 120 VAC, 60 Hz; max total service current to boiler 3.15 A | 120 VAC, 60 Hz; max total service current to boiler 3.15 A |
| Control | PureFire control with plain-English LCD display | PureFire control with plain-English LCD display |
| Fuel | Natural gas or LP gas | Natural gas or LP gas |
Published ratings: the Peerless PureFire PF-80 is rated 20–80 MBH input, 75 MBH heating capacity and 95% AFUE; the Peerless PureFire PF-110 is rated 27.5–110 MBH input, 103 MBH heating capacity and 95% AFUE. Peerless PureFire PF-110 lists 30 MBH more input than Peerless PureFire PF-80 (110 MBH against 80 MBH). Both list the same published AFUE of 95%.
Peerless PureFire PF-110 lists 20 lb more shipping weight than Peerless PureFire PF-80 (108 lb against 88 lb). The dimensions differs: the Peerless PureFire PF-80 lists 13-3/4" × 17-3/16" × 29-1/2", while the Peerless PureFire PF-110 lists 19-3/8" × 17-3/16" × 29-1/2".
Both records print the same AFUE (95%), domestic-hot-water arrangement (Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater), venting (3") and approved vent materials (PVC, CPVC, AL29-4C stainless or polypropylene (Category IV, positive pressure)), per the cited sources.
Peerless Boilers
The Peerless PureFire PF-80 fires 20 to 80 MBH input with 75 MBH heating capacity and a 65 MBH net water rating at 95% AFUE — a mid-small size sharing the compact cabinet of the PF-50 — on the stainless-steel, sealed-combustion direct-vent condensing platform.
Peerless Boilers
The Peerless PureFire PF-110 fires 27.5 to 110 MBH input with 103 MBH heating capacity and a 90 MBH net water rating at 95% AFUE — the first of the wider mid-range cabinets (21 × 23 × 36 inch carton) — on the stainless-steel, sealed-combustion direct-vent condensing platform.
The Peerless PureFire PF-110 lists 110 MBH, against 80 MBH on the Peerless PureFire PF-80, per the cited documentation.
Both list the same AFUE of 95%.
It ships at 108 lb against 88 lb for the Peerless PureFire PF-80, per the cited sources.
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.