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Diffusers
Our stainless steel diffusers provide a perfect air and fuel mixture for optimal combustion.
*These Diffusers are compatible with Cleaver-Brooks boilers.
Part # | Diameter | Model | HP Range
- 275-03136 inchCB15-20 HP
- 275-03236 inchCB30-40 HP
- 275-128100 Series36 inchCBH25-50A HP
- 275-065O/S48 inchCB50 HP
- 275-066O/S48 inchCB60 HP
- 275-067O/S48 inchCB70 HP
- 275-068O/S48 inchCB80 HP
- 275-069O/S48 inchCB100 HP
- 275-127200/700 Series48 inchCBH80-100 HP
- 275-185N/S48 inchCB100 HP, 100A-125A
- 275-186N/S48 inchCB50-60 HP
- 275-187N/S48 inchCB70-80 HP
- 275-95055 inchCBEX-E100-125 HP30 PPM
- 275-06360 inchCB, CBW125-150 HP, 100 HP
- 275-08260 inchCB200 HP
- 275-26460 inchCBLE125-200 HP30 PPM
- 275-29560 inchCBLE125-200 HP30 PPM
- 275-31260 inchCBEX-E150-200 HP
- 275-31067 inchCBEX-E250 HP60 PPM
- 275-10878 inchCB250-300 HP
- 275-10978 inchCB350 HP
- 275-25378 inchCB250-300 HP-HTD
- 275-25478 inchCB350 HP-HTD
- 275-30578 inchCBEX-E350-400 HP30/60 PPM
- 275-141878 inchCBEX-DE300-350 HP30 PPM
- 275-30385 inchCBEX-E600 HP30/60 PPM
- 275-200185 inchCBEX-E500 HP30 PPM
- 275-271585 inchCBEX-E500 HP60 PPM
- 275-14396 inchCB400-800 HP
- 275-25596 inchCB500-800 HP-HTD
- 275-25696 inchCB400 HP-HTD
- 275-317106 inchCBEX-E900-1000 HP30 PPM
- 275-151CN Series
- 275-205BR Series
- 275-215Model 5 4500-6000, 200/700 Series
- 275-227Model 4 4500-6000, 200/700 Series
- 275-237Model 4 1500-2000, 200/700 Series
- 275-304CBEX-2W800 HP30/60 PPM
- 275-2002CBEX-2W600 HP
In-stock items. Order by 2:00 PM EST for Same-Day Shipping.
*Halmar Corporation offers many Cleaver-Brooks aftermarket parts. Halmar Corporation is not a factory authorized sales representative for Cleaver-Brooks, nor is Halmar Corporation affiliated with Cleaver-Brooks in any way. Cleaver-Brooks is a registered trademark of Cleaver-Brooks, Inc., Thomasville, GA.
Some aftermarket parts may be made by other manufacturers.
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Frequently Asked Questions About Diffusers
What is a boiler diffuser and what is its primary function?
A boiler diffuser is a high-temperature combustion component located at the burner head assembly. Its primary function is to mix coming fuel and forced air into a perfect uniform ratio. By creating proper turbulence at the point of ignition, stainless steel diffusers optimize overall combustion efficiency, guarantee flame stability, and eliminate fuel waste.
What are the main signs that a burner diffuser needs replacement?
Because diffusers operate directly within the intense radiant heat of the burner flame zone, they are subject to extreme thermal stress and oxidation over time. During standard seasonal turnarounds or scheduled fireside maintenance inspections, technicians should look for severe metal warping, cracked structural welds, or advanced material erosion along the outer edge fins. Replacing a distorted piece with a fresh aftermarket component stops fuel pooling and improper flame patterns before they damage your furnace lining.
Why should facility managers choose Halmar aftermarket diffusers over factory original equipment options?
Sourcing proprietary or assembly-specific burner elements directly from original equipment manufacturers (OEMs) often exposes mechanical contractors to lengthy supplier backorders and steep price premiums. Halmar functions as an independent domestic supplier, maintaining a massive, ready-to-ship pool of high-durability aftermarket boiler parts on our warehouse shelves in Louisville, Kentucky. We ensure precise dimensional alignment for seamless machinery compatibility alongside fast same-day shipping on all in-stock products.
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