Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The PHR199-55 is the top Pioneer at 40,000-199,000 BTU/hr and shares everything with the PHR160-55 except the ceiling: both print 95% thermal efficiency, 260 lb, 55 gallons, the same 23 x 56 x 34 in cabinet, 1-1/4" NPT connections and 3"/4" (200 ft) venting.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | HTP PHR160-55 | HTP PHR199-55 |
|---|---|---|
| Input rate, minimum | 40 MBH | 40 MBH |
| Input rate, maximum | 160 MBH | 199 MBH |
| Thermal efficiency (as printed) | 95 % | 95 % |
| Shipping weight | 260 lb | 260 lb |
| Tank water content | 55 gal | 55 gal |
| Dimensions (W x H x D) | 23" x 56" x 34" | 23" x 56" x 34" |
| CH supply/return connection | 1-1/4" NPT (female) | 1-1/4" NPT (female) |
| Venting | 3" (200 ft) or 4" (200 ft), combined equivalent feet | 3" (200 ft) or 4" (200 ft), combined equivalent feet |
The two models share the same 40,000 BTU/hr minimum fire, so below the PHR160-55's ceiling they modulate identically; the difference is the PHR199-55's 199,000 BTU/hr maximum.
Both print 95% thermal efficiency on the retired page table and the same 260 lb / 55 gal / 23 x 56 x 34 in package in LP-325 Table 4.
Venting (3" 200 ft or 4" 200 ft), connections (1-1/4" NPT supply/return, 3/4" gas) and the five to one turndown are common, so the choice is purely design-day capacity.
The HTP PHR160-55 is the 160 MBH class model of the retired Pioneer 55-gallon high-mass condensing heater line: 40,000 to 160,000 BTU/hr input, 95% printed thermal efficiency and a 260 lb package, recorded from the official retired Pioneer table and LP-325 Table 4.
The HTP PHR199-55 is the 199 MBH class model of the retired Pioneer 55-gallon high-mass condensing heater line: 40,000 to 199,000 BTU/hr input, 95% printed thermal efficiency and a 260 lb package, recorded from the official retired Pioneer table and LP-325 Table 4.
Only the firing ceiling: 160,000 vs 199,000 BTU/hr; the minimum fire, package, efficiency and connections are identical.
Both print 95% thermal efficiency on the retired official table.
When the heat-loss calculation plus indirect-tank recovery load exceeds the PHR160-55's 160,000 BTU/hr ceiling.
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.