H.C. Oswald Supply Company Inc.

Heating Supply and Wholesale Distributor since 1923. Established in 1923, family owned and operated through 4 generations. Wholesale Distributor for Boilers and Heating Supplies; Trash Chute Hopper Doors and Parts; Oven Grates, Cast Iron Doors and Parts.

Operating as usual


Celebrating Independence Day!


Don't miss out. We are offering free shipping on all of our trash chute door products for a limited time. We have the largest inventory in stock and are ready to ship. Visit us at, www.oswaldsupply.com


Thank You Veterans. We salute our military men and women.


"The willingness of America's Vets to sacrifice for our country has earned them our lasting gratitude." - Jeff Miller


Mole Day - Wikipedia, the free encyclopedia

Happy Mole Day!

Mole Day - Wikipedia, the free encyclopedia Mole Day is an unofficial holiday celebrated among chemists and chemistry students on October 23, between 6:02 AM and 6:02 PM,[1][2][3] making the date 6:02 10/23 in the American style of writing dates. The time and date are derived from Avogadro's number, which is approximately 6.02×1023, defining…


Cleaver Brooks Boiler Fireside Gasket Kits

Cleaver Brooks Boiler Fireside Gaskets Kits now available online!

Cleaver Brooks Boiler Fireside Gasket Kits Cleaver Brooks Boiler Fireside Gasket Kits available online at Oswaldsupply.com.


Get your printed copy of Supply House Times Magazine today!
Article looks great Dan Holohan!


Timeline photos 09/30/2013

Tankless Coils for your boiler available online at oswaldsupply.com- Easy to search and select.


A labor of love 09/19/2013

A labor of love

Thank you Dan Holohan.


A labor of love H.C. Oswald Supply is in an old brick building sitting swat on a street in the Bronx less than three miles from Yankee Stadium. Oswald started its business in 1923 just a decade after the New York Yankees showed up, and they, too, have a grand history.

Heating Help 09/03/2013

Heating Help

A Labor of LOVE
-H.C. Oswald Supply Company Inc
by Dan Holohan

The emphasis on family, history, tradition and inherited responsibility that comes with being a apart of something much larger than the individual. Its a beautiful thing.

Thank you Dan Holohan


Heating Help A grand American story
The guys at H.C. Oswald have been doing something very valuable and very unusual for decades. I loved their story when I heard it and wrote about it in this month's Supply House Times. This is a company everyone who works with boilers should have in their files.


Have a safe and happy Labor Day Weekend ! From everyone at Oswald Supply Company.


Need Boiler Handhole and Manhole Plates? oswaldsupply.com

Now it is even easier to find the right hand hole plate for your boiler. Simply search by "Compatible Boiler" on the bottom left.

Need Boiler Handhole and Manhole Plates? oswaldsupply.com Buy Handhole Plates and Manhole Plates Online. Lowest Prices and Top Quality Products. New Forged Steel Handhole Plates Ship Same Day.

“Building Value for Wholesalers” available now from Benfield Consulting 06/18/2013

“Building Value for Wholesalers” available now from Benfield Consulting

A little helpful information

“Building Value for Wholesalers” available now from Benfield Consulting After five years of combined research and field experience, Benfield Consulting offers its latest book.

Cast Iron Age 04/12/2013

Those days are not over! Many boilers out there are still fired with coal and wood. Here are some interesting images we pulled from old literature.

Keeping it OLD SCHOOL! 04/12/2013

We still make em', cast iron boiler grates. We designed these grates for a Wood-Fired Smith 450 Mills Boiler. The plans were drawn up in the 50's by the previous owner of Oswald Supply, Harold Oswald. These ones are being shipped up to a prison in Vermont.

Trash Chute Hopper Doors 04/12/2013

Popular selections from our stock of Trash Chute Doors and Parts,

Timeline photos 04/11/2013

We are launching our site in only a few weeks!

The Personality of OSCO 04/11/2013

Some of what makes up Oswald Supply

Boiler Handhole Plates! 04/11/2013

Everything is always available at Oswald Supply!



Smith Cast Iron Boilers > Tech Talkhttp://www.smithboiler.com/html/news.asp...Attached is the first of several installments of Heating & Cooling Technology, a publication of Mestek.  The publication is designed to inform our customers of the possible conditions that may contribute to factors detrimental to the operation of their equipment.   




725 Whittier St
New York, NY

Opening Hours

Monday 7:30am - 5pm
Tuesday 7:30am - 5pm
Wednesday 7:30am - 5pm
Thursday 7:30am - 5pm
Friday 7:30am - 5pm

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