| Burnham K2WT-080B-6G00, 80K BTU's | hydro-smart.com | 2432.36 USD | 3,444.05 USD | −29.4% |
| Burnham K2WT-150B-6G00, 150K BTU's | hydro-smart.com | 2806.18 USD | 3,938.5 USD | −28.8% |
| Burnham K2WT-120B-6G00, 120K BTU's | hydro-smart.com | 2719.42 USD | 3,687.34 USD | −26.2% |
| Burnham K2WT-100B-6G00, 100K BTU's | hydro-smart.com | 2606.09 USD | 3,533.68 USD | −26.2% |
| REPLACEMENT HX ASSEMBLY 285 ALP | hydro-smart.com | 8807.4 USD | — | — |
| REPLACEMENT HX ASSEMBLY 210 ALP | hydro-smart.com | 7585.15 USD | — | — |
| REPLACEMENT HX ASSEMBLY 150 ALP | hydro-smart.com | 6729.88 USD | — | — |
| REPLACEMENT HX ASSEMBLY 105 ALP | hydro-smart.com | 4856.54 USD | — | — |
| Burnham ALTAC-200-1G00 200MBH Combi Boiler | hydro-smart.com | 3990.54 USD | — | — |
| ALTA SERVICE PART SUPER PAK ALTA | hydro-smart.com | 3605.96 USD | — | — |
| Burnham ALTA-180-1G00 180MBH Boiler | hydro-smart.com | 3561.15 USD | — | — |
| Burnham ALTAC-136-1G00 136MBH Combi Boiler | hydro-smart.com | 3544.65 USD | — | — |
| BLOWER INLET ASSEMBLY ALP 800C, APX 725C | hydro-smart.com | 3056.58 USD | — | — |
| Burnham ALTA-150-1G00 150MBH Boiler | hydro-smart.com | 3012.26 USD | — | — |
| Burnham ALTA-120-1G00 120MBH Boiler | hydro-smart.com | 2848.03 USD | — | — |
| REPL BLOWER &HARWARE SET 500C & 525C ALP/APX | hydro-smart.com | 2645.6 USD | — | — |
| REPLACEMENT HX ASSEMBLY 080 ALP | hydro-smart.com | 2431.04 USD | — | — |
| GAS TRAIN ASSEMBLY, LP GAS, 270, ASPEN-A / RAPTOR-B | hydro-smart.com | 1644.93 USD | — | — |
| GAS TRAIN ASSEMBLY, NATURAL GAS, 270, ASPEN-A / RAPTOR-B | hydro-smart.com | 1556.98 USD | — | — |
| SERVICE KIT ALTA | hydro-smart.com | 1475.48 USD | — | — |
| SERVICE KIT ASPEN/K2FT | hydro-smart.com | 1133.77 USD | — | — |
| BURNER DOOR ASSEMBLY 120-136 MBH ALTA/PHTM II/GHE II | hydro-smart.com | 1117.84 USD | — | — |
| DHW BLOCK, COMBI 136/200 FLAT PLATE HX, CIRCULATOR 3 WAY VALVE, DHW FLOW SEN | hydro-smart.com | 1087.94 USD | — | — |
| REPL CONTROL SET, ALP500-800,MODEL C,R7910A CSD-1, SW 4716.3219 | hydro-smart.com | 1087.61 USD | — | — |
| REPLACEMENT GAS VALVE 285B ALP | hydro-smart.com | 1043.75 USD | — | — |
| ASME CSD-1 SET, CONDENSING GAS WATER BOILERS, SIZE 500C-825C | hydro-smart.com | 949.07 USD | — | — |
| GAS TRAIN ASSEMBLY, NAT.GAS, 155/155C ASPEN-A / RAPTOR-B | hydro-smart.com | 891.59 USD | — | — |
| GAS TRAIN ASSEMBLY, NATURAL GAS, 205, ASPEN-A / RAPTOR-B | hydro-smart.com | 891.59 USD | — | — |
| GAS TRAIN ASSEMBLY, NATURAL GAS, 085, ASPEN-A / RAPTOR-B | hydro-smart.com | 891.59 USD | — | — |
| GAS TRAIN ASSEMBLY, NATURAL GAS, 110, ASPEN-A / RAPTOR-B | hydro-smart.com | 891.59 USD | — | — |
| SP,SG 2.3,X-C 120 | hydro-smart.com | 858.2 USD | — | — |
| SP,SG 2.3,X-C 100 | hydro-smart.com | 858.2 USD | — | — |
| BOILER CONTROL, SG 2.3 USA-SP01R3 K2/K2WT/K2WTC/K2FT/ASPN | hydro-smart.com | 858.2 USD | — | — |
| BOILER CONTROL,SG 2.3 ASPEN 270-399B | hydro-smart.com | 858.2 USD | — | — |
| BLOWER, EBM RG148 320 & 399 ASPEN-A/RAPTOR-B | hydro-smart.com | 858.17 USD | — | — |
| REPL CTL,ALPINE ONLY, 080-399, NON CSD-1, 0-7K, 3K RPM LOFS, SW 4716.3219 | hydro-smart.com | 822.56 USD | — | — |
| FRONT DOOR ASSEMBLY 085-270 ASPN | hydro-smart.com | 784.21 USD | — | — |
| GAS VALVE, EBM DO1 320 & 399 ASPEN-A/RAPTOR-B | hydro-smart.com | 734.31 USD | — | — |
| BLOWER, EBM RG148 (300W) 150-200 MBH ALTA/PHTM II/GHE II | hydro-smart.com | 713.57 USD | — | — |
| BURNER DOOR ASSEMBLY 150-200 MBH ALTA/PHTM II/GHE II | hydro-smart.com | 669.37 USD | — | — |