Who is Waldron of Maryland, Inc.?

Established in 1980, we are a stocking manufacturers' representatives firm specializing in air distribution, ventilation, heating, and air purification equipment. We offer all the benefits of a manufacturer's authorized local representative combined with the advantages of our local fully stocked warehouses of our popular products.

What does Waldron of Maryland, Inc. do?

As manufacturers representatives, we provide sales support, application engineering and design assistance to mechanical & sheet metal contractors, installers, and to consulting engineers, architects, & other designers.
We also stock popular products for many of the nationwide manufacturers we represent; and we also are direct factory distributors for many related products.

We publish our own Local Stock Air Products Catalog.
Our website www.engineeringair.com is owned and operated by Waldron of Maryland, Inc.
As direct factory reps and distributors we also drop-ship a wide variety of custom equipment and products made to order.

Does Waldron of Maryland, Inc. offer design assistance?

You can rely on our 30 years plus experience to provide all the assistance you need as a consulting engineer or designer to correctly identify, evaluate, and apply our products.
We provide design and engineering support for all the products we sell; backed by the expertise and the experience of the manufacturers themselves. Please contact us for assistance.

Does Waldron of Maryland, Inc. quote on bid projects?

We offer complete take off and pricing services across all of our product lines for virtually all projects, whether publicly bid or negotiated work.
Please see our Waldron Bid Calendar or contact us for a quote on your project.

How do I order?

All orders are subject to the Waldron of Maryland, Inc. Terms and Conditions of Sale.

 - Order online 24/7 on our site with secure checkout provided by Shopify. -

You can also call your order in during normal business hours at 410.574.9200, toll-free at 1.800.466.3828, or contact us to provide a quote.

Does Waldron of Maryland, Inc. accept credit cards?

We accept all valid major credit cards including Visa, MasterCard, and American Express and others.
Please see our Terms and Conditions of Sale.

How can I open an account?

To open a wholesale account, you must first contact us to complete and submit our credit application form for approval.
Please see our Terms and Conditions of Sale.

What are the Waldron of Maryland, Inc. business hours?

Our warehouses are open Monday through Friday, 7:00am – 4:00pm.
Our office hours are Monday through Friday, 7:00am - 4:00pm.
We are closed Saturday, Sunday, and on major holidays.
Visit our website 24/7.

As Manufacturers' Representatives since 1980, we do what it takes to stock the quality air products you need.

Rely on us get product to you, on-time and on-budget.


Our Baltimore warehouses have almost 2,000 different air distribution, ventilation, heating, and air purification products in stock: on the floor, on our shelves and in our racks; ready to go.

Multiple loading docks serving you from walk-in pick-ups to 18-wheeler truckloads -makes stock pickups easier and faster.

Call ahead and we'll have your order waiting on our dock.


We have our own trucks on the road everyday delivering our air products direct from our own warehouses to mechanical & sheet metal shops and job sites all over the Mid-Atlantic; Maryland, Delaware, D.C and Northern Virginia.

Local, regular scheduled delivery is free to qualified accounts. You pay a shipping charge for orders beyond our standard local delivery radius.

All of your available options for shipping your order including cost is shown at check out.


We ship products via UPS Ground, FedEx, and LTL common carrier direct to your shop or job site directly from our warehouses. Fast and easy: this may be a cost saving alternative to having your personnel/equipment tied up picking up small orders or orders too big for your own trucks.

All of your available options for shipping your order including cost is shown at check out..

Drop-ship Direct

We are one of the largest drop-ship manufacturers' reps in the Mid-Atlantic region with over 30 years experience working with top-tier national manufacturers from all over the United States.

Need a large bill of materials of spiral duct and fittings along with air devices and fans? We can get the products you need shipped direct from the factories to your job site or shop.

LTL to multiple truckloads; we get first quality air products to you; on time and on-budget.

  • Need a job take-off? We have been taking off airside components for over 30 years. Send us your prints and get a quote for your project requirements.*
  • Need non-stock models, configurations, or finish? Contact us for price and availability.
  • Need that item yesterday? Call us to see if we can help you get it fast!

* Please note we are independent manufacturers representatives under contracts that have territorial restrictions that may prevent us from quoting certain projects or equipment. We require customer location, project location and specifiers to present a quotation on plan & spec projects. If we can't quote you, we'll be happy to advise you who covers your location.

We reserve the right to refuse any request for quotation.

Please refer to the Waldron of Maryland, Inc. Terms and Conditions of Sale.