- Peerless Purefire PF-50 High Efficiency Gas Boiler PF50
- Peerless Purefire PF-80 High Efficiency Gas Boiler PF80
- Peerless Purefire PF-110 High Efficiency Gas Boiler PF110
- Peerless Purefire PF-140 High Efficiency Gas Boiler PF140
- Weil-McLain CGa-25 High Efficiency Atmospheric Gas Boiler CGa25
- Weil-McLain CGa-3 High Efficiency Atmospheric Gas Boiler CGa3
- Weil-McLain CGa-4 High Efficiency Atmospheric Gas Boiler CGa4
- Weil-McLain CGa-5 High Efficiency Atmospheric Gas Boiler CGa5
- Weil-McLain CGa-6 High Efficiency Atmospheric Gas Boiler CGa6
- Weil-McLain CGa-7 High Efficiency Atmospheric Gas Boiler CGa7
- Weil-McLain CGa-8 High Efficiency Atmospheric Gas Boiler CGa8
- Weil-McLain CGi-25 High Efficiency Induced Draft Gas Boiler CGi25
- Weil-McLain CGi-3 High Efficiency Induced Draft Gas Boiler CGi3
- Weil-McLain CGi-5 High Efficiency Induced Draft Gas Boiler CGi5
- Weil-McLain CGi-4 High Efficiency Induced Draft Gas Boiler CGi4
- Weil-McLain CGi-6 High Efficiency Induced Draft Gas Boiler CGi6
- Weil-McLain CGi-7 High Efficiency Induced Draft Gas Boiler CGi7
- Weil-McLain CGi-8 High Efficiency Induced Draft Gas Boiler CGi8
- Weil-McLain CGs-3 High Efficiency Gas, Direct Vent Boiler (Water) CGs3
- Weil-McLain CGs-4 High Efficiency Gas, Direct Vent Boiler (Water) CGs4
- Weil-McLain CGs-5 High Efficiency Gas, Direct Vent Boiler (Water) CGs5
- Weil-McLain CGt-5 High Efficiency Gas, Tankless Heater (Water) CGt5
- Weil-McLain Gv-3 High Efficiency Gas, Power Vented Boiler (Water) Gv3
- Weil-McLain Gv-4 High Efficiency Gas, Power Vented Boiler (Water) Gv4
- Weil-McLain Gv-5 High Efficiency Gas, Power Vented Boiler (Water) Gv5
- Weil-McLain Gv-6 High Efficiency Gas, Power Vented Boiler (Water) Gv6
- Weil Mclain Ultra 80 Series 3 High Efficiency Gas Boiler
- Weil Mclain Ultra 105 Series 3 High Efficiency Gas Boiler
- Weil Mclain Ultra 155 Series 3 High Efficiency Gas Boiler
- Weil Mclain Ultra 230 Series 3 High Efficiency Gas Boiler
- Weil Mclain Ultra 310 Series 3 High Efficiency Gas Boiler
- Weil Mclain Gold Plus 30 Indirect Fired Water Heaters
- Weil Mclain Gold Plus 40 Indirect Fired Water Heaters
- Weil Mclain Gold Plus 60 Indirect Fired Water Heaters
- Weil Mclain Gold Plus 80 Indirect Fired Water Heaters
- NTI Trinity Ti100 95% Efficiency Natural Gas Boiler Ti-100
- NTI Trinity Ti150 95% Efficiency Natural Gas Boiler Ti-150
- NTI Trinity Ti150C Combo 95% Efficiency Natural Gas Boiler Ti-150c
- NTI Trinity Ti200 95% Efficiency Natural Gas Boiler Ti-200
- NTI Trinity Ti200C Combo 95% Efficiency Natural Gas Boiler Ti-200c
- NTI Trinity Ti400 95% Efficiency Natural Gas Boiler Ti-400
- Peerless Partner LO-Boy PP30 Indirect Hot Water Heater
- Peerless PP40 indirect-fired water heater 37 Gal PP-40
- Peerless PP60 indirect-fired water heater 57 Gal PP-60
- Peerless PP80 indirect-fired water heater 77 Gal PP-80
- Peerless PP120 indirect-fired water heater 119 Gal PP-120
- Weil Mclain WMBP1-14E Brazed Plate Heat Exchangers
- Weil Mclain WMBP1-20E Brazed Plate Heat Exchangers
- Weil Mclain WMBP1-30E Brazed Plate Heat Exchangers
- Weil Mclain WMBP3-14 Brazed Plate Heat Exchangers
