| Product | Fuel | DOE Heating Capacity | Venting | Trim | Construction |
| Peerless® Pinnacle® | Gas-Fired (Natural or LP) | 16 to 183 MBH | Direct Vent | Water | Stainless Steel |
| Series MI | Gas-Fired (Natural or LP) | 58 to 211 MBH | Natural Draft | Water | Cast Iron |
| Series MIH | Gas-Fired (Natural) | 54 to 135 MBH | Natural Draft | Water | Cast Iron |
| Series 63 | Gas-Fired (Natural or LP) | 73 to 241 MBH | Natural Draft | Water or Steam | Cast Iron |
Commercial Boilers
| Product | Fuel | Gross Output | Venting | Trim | Construction |
| Peerless® Pinnacle® PI-399 | Gas-Fired (Natural or LP) | 93 to 379 MBH | Direct Vent | Water | Stainless Steel |
| Series 64 | Gas-Fired (Natural or LP) | 279 to 525 MBH | Natural Draft | Water or Steam | Cast Iron |
| Series 211A | Gas-Fired (Natural or LP) | 504 to 7,560 MBH | Natural Draft | Water or Steam | Cast Iron |