Pennco 1605HSID
The Pennco 1605HSID is the mid-size 16 Series model: 150/140 MBH input (natural gas/LP) with 122/114 MBH heating capacity and a 92/86 MBH net steam rating at 82% AFUE.
Key figures
- Max input
- 150 / 140 MBH
- Max CSA output
- —
- AFUE
- 82 %
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Pennco 1605HSID in practice
The Pennco 1605HSID is a cast-iron gas-fired steam boiler rated at 150/140 MBH input on natural gas/LP. Its row in the 16 Series sell sheet prints 122/114 MBH heating capacity, a 92/86 MBH AHRI net steam rating at a 1.333 piping and pickup allowance, 383/358 steam square feet and 82% AFUE, with a 6" flue, a 17-3/4"-wide cabinet and an approximate weight of 440 lb.
The boiler ships fully assembled with an insulated jacket and a completely installed and wired gas control system: titanium composite burners, a gas manifold with orifices, an automatic redundant combination gas valve, intermittent pilot control with continuous retry and 100% shut-off, a combination pilot burner/electrode/flame sensor and an integral draft diverter. Standard equipment also includes an electronic low-water cut-off with 3/4-inch probe, pressure limit control, steam pressure gauge, glass water level gauge, blocked vent spill switch, flame roll-out fuse link and a 15 psi ASME pop safety valve. Ratings are for sea level to 2,000 feet with a four percent reduction per 1,000 feet above that.
Boilers.ca documents this size at model level from the sell sheet and links the published IOM and near-boiler piping guide. Steam, gas and venting work belongs with a licensed contractor. No official Canadian-sales statement was found, so canadianStatus stays 'unknown'.
Best suited to
- 150 MBH residential steam loads (natural gas)
- Systems needing about 383 square feet of steam radiation
- Homes with an existing chimney and a 5- to 7-inch flue
Applicability and support
- Model number
- 1605HSID
- Canadian availability
- unknown
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Series terms
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 Pennco. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input (natural gas / LP) | 150 / 140 MBH | AHRI certified input printed as a natural-gas/LP pair per the 16 Series sell sheet (sea level to 2,000 ft; reduce 4% per 1,000 ft above that). |
| Output | ||
| Heating capacity (natural gas / LP) | 122 / 114 MBH | Heating capacity printed as a natural-gas/LP pair per the 16 Series sell sheet. |
| Net steam (natural gas / LP) | 92 / 86 MBH | AHRI net steam rating printed as a natural-gas/LP pair, based on a piping and pickup allowance of 1.333. |
| Steam square feet (natural gas / LP) | 383 / 358 sq ft | Steam square feet printed as a natural-gas/LP pair per the 16 Series sell sheet. |
| Efficiency | ||
| Efficiency (AFUE) | 82 % | AFUE per the 16 Series sell sheet ratings table (1603HSID 82.7%, 1604HSID through 1609HSID 82.0%). |
| Domestic hot water | ||
| Domestic hot water | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater | |
| Venting and air | ||
| Flue diameter | 6" | Flue diameter per the 16 Series sell sheet; an integral draft diverter is standard. |
| Venting | Chimney vented with integral draft diverter | Blocked vent safety shut-off (spill switch) and flame roll-out fuse link are standard. |
| Physical and connections | ||
| Approx. shipping weight | 440 lb | Approximate weight per the 16 Series sell sheet ratings table. |
| Dimensions (width × height × depth) | 17-3/4" × 36-3/8" × 26-1/2" | 16 Series dimension values; height and depth are common across the line. |
| Steam connections | 2" supply and 2" return | Steam connection sizes per the 16 Series IOM and near-boiler piping guide. |
| Operating limits and other | ||
| Control | Intermittent pilot control with continuous retry and 100% shut-off | Standard equipment includes electronic low-water cut-off with 3/4" probe, pressure limit control, steam pressure gauge and glass water level gauge. |
| Fuel | Natural gas or propane (conversion kits available) | Ratings are printed as natural-gas/LP pairs and natural-gas-to-propane conversion kits are listed among the options. |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
What are the Pennco 1605HSID's ratings?
150/140 MBH input (natural gas/LP), 122/114 MBH heating capacity, a 92/86 MBH net steam rating (383/358 sq ft) and 82% AFUE with a 6" flue per the 16 Series sell sheet.
Can the 1605HSID be converted to propane?
Yes — the ratings are printed as natural-gas/LP pairs and the sell sheet lists natural-gas-to-propane conversion kits among the options.
Questions about the Pennco 1605HSID?
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
- Pennco — 16 Series Steam Boilers product page · accessed September 9, 2026
- Pennco 16 Series Brochure Rev. 07-18-24 (PDF) · accessed September 9, 2026
- Pennco 16 Series IOM Rev. B (PDF) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.