Peerless PureFire PF-50
The Peerless PureFire PF-50 fires 16 to 50 MBH input with 47 MBH heating capacity and a 41 MBH net water rating at 95% AFUE — the smallest PureFire size and the entry point for the stainless condensing line — on the stainless-steel, sealed-combustion direct-vent condensing platform.
Key figures
- Max input
- 50 MBH
- Max CSA output
- —
- AFUE
- 95 %
- Min input
- 16 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Peerless PureFire PF-50 in practice
The PureFire PF-50 is a stainless-steel, condensing, sealed-combustion direct-vent gas boiler rated at 16–50 MBH input. Its rating row prints 47 MBH heating capacity and a 41 MBH net water rating (1.15 piping and pickup allowance) at 95% AFUE in I&O manual Table 12.2 (PF8248-R9) and the residential cut sheet (CUT-PF R11).
The boiler ships in a 21" × 16" × 36" carton at about 88 lb, measures 13-3/4" × 17-3/16" × 29-1/2" (A × B × C) per the dimension table, connects on 1" NPT supply/return with 1/2" NPT gas, and runs on 120 VAC/60 Hz. Venting is 3" exhaust/air intake (PVC, CPVC, AL29-4C stainless or polypropylene) to a 200-equivalent-foot maximum combined length. The PureFire control shows status in plain English on an LCD, ignition is direct spark, and the product page claims ENERGY STAR certification (the PF-300 excepted) with a 12-year heat exchanger warranty.
Boilers.ca documents this size at model level for service planning and cross-referencing; installation, gas, electrical and venting work belongs with a licensed contractor. No official Canadian-sales statement was found, so canadianStatus stays 'unknown'.
Best suited to
- 16-to-50 MBH residential heat-loss loads
- Homes pairing the boiler with an indirect water heater for domestic hot water
- Buyers comparing the PureFire residential sizes on the shared cut sheet
Applicability and support
- Model number
- PF-50
- Canadian availability
- unknown
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Not verified
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 Peerless Boilers. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input, minimum | 16 MBH | Minimum input per the PureFire ratings table (I&O manual Table 12.2; residential cut sheet). |
| Input, maximum | 50 MBH | Maximum input per the PureFire ratings table (I&O manual Table 12.2; residential cut sheet). Above 2,000 ft the boiler de-rates 3.5% per additional 1,000 ft with no adjustment to the boiler. |
| Output | ||
| Heating capacity | 47 MBH | Heating capacity per the residential PureFire ratings table (I&O manual Table 12.2). |
| Net water rating | 41 MBH | Net water rating based on a piping and pickup allowance of 1.15 per the PureFire ratings table (I&O manual Table 12.2). |
| Efficiency | ||
| Efficiency (AFUE) | 95 % | AFUE per the PureFire ratings table (I&O manual Table 12.2; cut sheet). |
| Domestic hot water | ||
| Domestic hot water | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater | |
| Venting and air | ||
| Exhaust vent / air intake | 3" | Exhaust vent and air intake size per I&O manual Table 3.2; total combined exhaust and air-intake length to 200 equivalent feet (Table 3.3/3.4 notes). The exhaust connection is a 3" CPVC female adapter on PF-50–PF-140, and 3" (PF-200/PF-210) or 4" (PF-300/PF-399) male CPVC pipe per Section 3.E. |
| Approved vent materials | PVC, CPVC, AL29-4C stainless or polypropylene (Category IV, positive pressure) | Approved exhaust vent materials per I&O manual Table 3.1; Canadian installations require ULC S636 venting. |
| Physical and connections | ||
| Approx. shipping weight | 88 lb | Approximate carton shipping weight per the cut-sheet table (carton dimensions 21" × 16" × 36"). |
| Dimensions (A × B × C) | 13-3/4" × 17-3/16" × 29-1/2" | Boiler dimensions A, B and C per the I&O manual dimension table (Table 12.1). |
| Supply/return connections | 1" NPT | Supply and return connection size per the I&O manual parts/dimension data (brass field couplings sized 1" NPT). |
| Gas connection | 1/2" NPT | Gas connection per the I&O manual (1/2" NPT manual shut-off valve listed for PF-50–PF-140; 3/4" flexible gas line and 3/4" NPT full-port shut-off valve listed for PF-200–PF-399). |
| Electrical | ||
| Electrical | 120 VAC, 60 Hz; max total service current to boiler 3.15 A | Supply 120 VAC (-15%, +10%), 60 Hz (±1.2 Hz) and maximum total service current to the boiler per I&O manual Table 12.5. |
| Operating limits and other | ||
| Control | PureFire control with plain-English LCD display | LCD control board shows operational status in plain English (product page); control diagnostics use blocking/locking/warning code tables in I&O manual Section 10. |
| Fuel | Natural gas or LP gas | Natural gas or propane with sulfur content below the limits in I&O manual Section 5; conversion-kit instructions are published on the product page. |
Manuals
- Peerless PureFire PF-50–PF-399 Installation, Operation & Maintenance Manual (PF8248-R9, 4/26)PF8248-R9 · 2026-04
- Peerless PureFire Residential Cut Sheet (CUT-PF R11, 8/25)CUT-PF R11 · 2025-08
Alerts documented for this model
Frequently asked questions
What are the PF-50's ratings?
16–50 MBH input, 47 MBH heating capacity and a 41 MBH net water rating at 95% AFUE per the ratings table.
Is the PF-50 ENERGY STAR certified?
Yes — the product page states the PureFire is ENERGY STAR certified, with one exception: the PF-300 model is not ENERGY STAR certified.
Why do the PF-300 and PF-399 print different efficiency figures?
Their rows print gross output and thermal efficiency (96.5% and 95.2%) instead of AFUE — the commercial rating convention used for the shared cut sheet's PF-300/PF-399/PFC-460 rows.
Questions about the Peerless PureFire PF-50?
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.
Compare and explore
- Peerless PureFire PF-50 vs PF-80Comparison
- Peerless PureFire PF-80Same series
- Peerless PureFire PF-110Same series
- Peerless PureFire PF-140Same series
- Peerless PureFire PF-200Same series
- Peerless PureFire PF-210Same series
- Peerless PureFire PF-300Same series
- Peerless PureFire PF-399Same series
- PureFire series hub
- Buying guide
Sources and verification
- Peerless Boilers — PureFire product page · accessed September 9, 2026
- Peerless PureFire PF-50–PF-399 Installation, Operation & Maintenance Manual, PF8248-R9 (4/26) (PDF) · PF8248-R9 · accessed September 9, 2026
- Peerless PureFire Residential Cut Sheet, CUT-PF R11 (8/25) (PDF) · CUT-PF R11 · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.