Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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HTP · Series
The Pioneer is HTP's retired 55-gallon high-mass condensing heater line: four models PHR100-55, PHR130-55, PHR160-55 and PHR199-55 with 35,000-199,000 BTU/hr printed input ranges, 94-95% printed thermal efficiency, a built-in buffer tank, a five to one turndown and a 12-year limited warranty.
Series facts
The retired page and LP-325 Table 4 print 95% for PHR100-55, PHR160-55 and PHR199-55 and 94% for PHR130-55; the page copy says 'up to a 95% thermal efficiency rating'.
HTP's retired Pioneer page describes 'a 55 gallon high mass unit, available in 4 BTU ranges - 100, 130, 160, and 199K' with 'up to a 95% thermal efficiency rating and a five to one turndown ratio', a built-in buffer tank, SCAQMD Rule 1146.2 compliance and a 12 year limited warranty. The printed page table and LP-325 Table 4 both list PHR100-55 (35,000-100,000, 95%), PHR130-55 (35,000-130,000, 94%), PHR160-55 (40,000-160,000, 95%) and PHR199-55 (40,000-199,000, 95%), each with a 260 lb shipping weight.
LP-325 Table 4 supplies the rating rows used on the model records: a 55-gallon 304L stainless steel buffer tank, 23" x 56" x 34" dimensions, 1-1/4" NPT female supply/return with 3/4" NPT gas and a 1" NPT drain, a 30 PSI maximum water pressure, the 926 SIT control and venting (2" 85 ft / 3" 125 ft on the 100/130; 3" 200 ft / 4" 200 ft on the 160/199). The heat exchanger is 90/10 cupronickel primary with 800H stainless steel and cupronickel secondary tubing.
The Pioneer is retired: HTP's discontinued-products index lists 'Pioneer' and the retired page remains as documentation. Boilers.ca records the line with productStatus 'discontinued' and canadianStatus 'unknown'; no official Canadian sales statement was found. Owners should have the unit serviced by a licensed contractor against LP-325.
Highlights
The retired page states the Pioneer 'is backed by a limited 12 year warranty, right out of the box! No registration is required.'
Models
One canonical page per model with input, output and efficiency kept separate.
The HTP PHR100-55 is the 100 MBH class model of the retired Pioneer 55-gallon high-mass condensing heater line: 35,000 to 100,000 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 PHR130-55 is the 130 MBH class model of the retired Pioneer 55-gallon high-mass condensing heater line: 35,000 to 130,000 BTU/hr input, 94% printed thermal efficiency and a 260 lb package, recorded from the official retired Pioneer table and LP-325 Table 4.
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.
| Specification | HTP PHR100-55 | HTP PHR130-55 | HTP PHR160-55 | HTP PHR199-55 |
|---|---|---|---|---|
| Input rate, minimum | 35 MBH | 35 MBH | 40 MBH | 40 MBH |
| Input rate, maximum | 100 MBH | 130 MBH | 160 MBH | 199 MBH |
| output-max | — | — | — | — |
| afue | — | — | — | — |
| Turndown | 5:1 | 5:1 | 5:1 | 5:1 |
| vent-max-3 | — | — | — | — |
| vent-max-2 | — | — | — | — |
| Shipping weight | 260 lb | 260 lb | 260 lb | 260 lb |
Read the full comparison: HTP PHR100-55 vs PHR130-55 →
Read the full comparison: HTP PHR130-55 vs PHR160-55 →
Error codes and alerts
Manuals
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.
Services for HTP boilers
Four printed models: PHR100-55, PHR130-55, PHR160-55 and PHR199-55, with modulation ranges from 35,000-100,000 up to 40,000-199,000 BTU/hr.
Yes — HTP's discontinued-products index lists 'Pioneer'; the retired product page and its manuals remain for documentation and support.
The retired page and LP-348 submittal print a five to one (5:1) turndown ratio.
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.
Sources and verification
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.