Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
Boilers.ca is a brand of ROMA Heating & Cooling · Licensed gas contractor LGA0202903
Raypak · Series
The Hi Delta SS is Raypak's compact non-condensing copper finned-tube boiler with cast-iron headers — models H3-HD151 through H3-HD401 with outdoor R-model variants — whose footprint is 'less than 6.9 ft' across all models.
Series facts
Raypak markets the Hi Delta SS as a more compact non-condensing copper finned-tube boiler with cast-iron headers: the page states the footprint 'is less than 6.9 ft for all models', with indoor and outdoor configurations.
Model sizes printed on the page are HD151 through HD401 (H3-HD151 … H3-HD401), with outdoor models HD101R–HD401R. Efficiency figures are published in the spec sheets rather than the captured page text.
Raypak publishes I&O manual 241356 for the Hi Delta SS, along with Temp-Tracker documentation, from the product page. No explicit Canadian-availability sentence appears.
Highlights
Models
One canonical page per model with input, output and efficiency kept separate.
Raypak
The Raypak Hi Delta SS HD151 is a compact non-condensing copper finned-tube commercial hydronic boiler rated 150 MBTUH input and 126 MBTUH output at 85% AFUE, with a 4 in flue and a 175 lb shipping weight per submittal 241922.
Raypak
The Raypak Hi Delta SS HD201 is a compact non-condensing copper finned-tube commercial hydronic boiler rated 199 MBTUH input and 167 MBTUH output at 85% AFUE, with a 5 in flue and a 200 lb shipping weight per submittal 241922.
Raypak
The Raypak Hi Delta SS HD251 is a compact non-condensing copper finned-tube commercial hydronic boiler rated 250 MBTUH input and 210 MBTUH output at 85% AFUE, with a 5 in flue and a 225 lb shipping weight per submittal 241922.
Raypak
The Raypak Hi Delta SS HD301 is a compact non-condensing copper finned-tube commercial hydronic boiler rated 299 MBTUH input and 251 MBTUH output at 85% AFUE, with a 5 in flue and a 250 lb shipping weight per submittal 241922.
Raypak
The Raypak Hi Delta SS HD401 is a compact non-condensing copper finned-tube commercial hydronic boiler rated 399 MBTUH input and 335 MBTUH output at 84% thermal efficiency, with a 6 in flue and a 300 lb shipping weight per submittal 241922.
| Specification | Raypak Hi Delta SS HD151 | Raypak Hi Delta SS HD201 | Raypak Hi Delta SS HD251 | Raypak Hi Delta SS HD301 | Raypak Hi Delta SS HD401 |
|---|---|---|---|---|---|
| input-min | — | — | — | — | — |
| Input | 150 MBH | 199 MBH | 250 MBH | 299 MBH | 399 MBH |
| Output | 126 MBH | 167 MBH | 210 MBH | 251 MBH | 335 MBH |
| afue | — | — | — | — | — |
| turndown | — | — | — | — | — |
| vent-max-3 | — | — | — | — | — |
| vent-max-2 | — | — | — | — | — |
| Weight | 175 lb | 200 lb | 225 lb | 250 lb | 300 lb |
Read the full comparison: Raypak Hi Delta SS HD151 vs Hi Delta SS HD201 →
Read the full comparison: Raypak Hi Delta SS HD301 vs Hi Delta SS HD401 →
Read the full comparison: Raypak Hi Delta SS HD201 vs HD251 →
Read the full comparison: Raypak Hi Delta SS HD251 vs HD301 →
Error codes and alerts
No alerts documented for this series yet.
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 Raypak boilers
The Hi Delta SS is the compact variant of the same copper finned-tube / cast-iron-header design — Raypak prints a footprint under 6.9 ft for all SS models and an HD151–HD401 size range.
Yes — outdoor models HD101R through HD401R are listed on the product page.
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.