Black Friday Boiler Deals

1440 products

Black Friday 2026 is Friday, November 27, and Cyber Monday follows on Monday, November 30.

Oswald Supply's Black Friday boiler deals go live on November 23rd.

Heating season is here, so it is a smart time to stock up on the parts you reach for most, from flame sensors, igniters and blowers to tankless coils and gaskets. Order before 2 PM ET and most items ship the same day.

Deals run from November 23rd to November 30th, or while supplies last.

Not waiting? Shop boiler repair parts, cast iron radiators, handhole/ manhole gaskets, and trash chute doors.

Showing 1 - 24 of 1440 products

Save $752.66

Argo Electric Boiler AT062310C 20,500 BTU, 6KW, 2-Element Series C with Breakers

AT062310C

$1,557.34 $2,310

Save $809.37

Argo Electric Boiler AT082410C 27,300 BTU, 8KW, 2-Element Series C with Breakers, In Stock & Ready to Ship

AT082410C

$1,674.63 $2,484

Argo Electric Boiler AT102510C 34,100 BTU, 10KW, 2-Element Series C with Breakers

AT102510C

$1,801.61

Save $896

Argo Electric Boiler AT122610C 41,000 BTU, 12KW, 2-Element Series C with Breakers

AT122610C

$1,856 $2,752

Save $1,019.73

Argo Electric Boiler AT124310C 40,944 BTU, 12KW, 4-Element Series C with Breakers

AT124310C

$2,108.27 $3,128

Save $1,047.53

Argo Electric Boiler AT164410C 55,000 BTU, 16KW, 4-Element Series C with Breakers

AT164410C

$2,167.47 $3,215

Save $1,072.66

Argo Electric Boiler AT204510C 68,200 BTU, 20KW, 4-Element Series C with Breakers

AT204510C

$2,221.34 $3,294

Save $1,202.33

Argo Electric Boiler AT244610C 81,000 BTU, 24KW, 4-Element Series C with Breakers

AT244610C

$2,490.67 $3,693

Save $3.22

ELBOW 90¬¨1/4NPTX1/4 TUBE ID, POLYPROPYLENE 5082553 BLACK

5698

$12.88 $16.10

Save $327

McDonnell Miller 6667 - HEAD MECHANISM - Used With D4367, 69

153825

$328 $655

Save $199

McDonnell Miller SA37-30 - FLOAT ASSEMBLY - Used With D4347

340600

$199 $398

Save $388

McDonnell Miller SA47-101-102 - VALVE & STRAINER - Used With D4347, 247, 847

341600

$388 $776

Save $140

McDonnell Miller SA51-9 - STRAINER ASSEMBLY - Used With D4351S

342200

$140 $280

Save $161

McDonnell Miller SA51-9R - STRAINER ASSEMBLY - Used With D4325A

342300

$162 $323

Save $3,495.01

New Yorker CGS70, 204K Input Cast Iron Gas-Fired Steam Boiler

CGS70

$2,800 $6,295.01

Save $60.85

Peerless Boiler Repair Part #Pf7003 - Harness Pf50/140 Control, (Left) - Oswald Supply

Obsolete - PF7124 & PF7123 Combination for Replacement - Peerless Boiler Repair Part #Pf7003 - Harness Pf50/140 Control, (Left)

PF7003

$243.36 $304.21

Save $154.39

OBSOLETE USE PART NUMBER #PP54899 - Peerless Boiler Repair Part #54832 - Ctrl Pbc-40 Repair Ctn, Repair Part PBC

54832

$617.52 $771.91

Save $4.94

Peerless Boiler Part #50040 - Switch Texi 1Nt08L-5621 210F

50040

$19.76 $24.70

Save $5.16

Peerless Boiler Part #50041 - Switch Texi 1Nt08L- 5620 230F

50041

$20.64 $25.80

Save $5.16

Peerless Boiler Part #50042 - Switch Texi 1Nt08L-5698 250F

50042

$20.64 $25.80

Save $46.23

Peerless Boiler Part #50118 - Srv Watts #174A 100# 3/4**

50118

$184.88 $231.11

Save $4.52

Peerless Boiler Part #50203 - Gasket Fan Adapter De

50203

$18.08 $22.60