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Retail Store


Are you having a hard time finding a replacement air filter or humidifier media? We stock hundreds of air filters and humidifier media in various brands. Chances are we have what you are looking forward.

We offer Fiberglass, extended surface, paper media, hogs hair and others. We also stock Aprilaire, Carrier, Herrmidifier and LAU humidifier water panels. Give us a call for that hard to find filter. Call 302-998-2257 for pricing & availability.


How about that little do-it-yourself project you have been meaning to finish. We also have numerous registers and return grilles in stock. So have you painted that register so many times that the air will not come out any more. Replace it with a new one. After all your system cannot breath if there is something blocking its mouth. We carry a full line of floor, wall and ceiling registers and grilles.

Call 302-998-2257 for pricing & availability

Helpful Hint: When measuring your register for proper size and fit, measure the part of the register that slips into the opening in the floor or wall.


Have you taken note of your dryer vent lately? Have the kids banged into it with their bike, or did you accidentally bump it while weeding the flowerbeds. No matter we can sell you a replacement. Have the kids been bored this past year with all the rain and cold. Did they try using the ductwork to hang a swing or make a fort. We sell prefab metal that the typical homeowner can replace himself or herself. We can also make you a custom piece in our sheetmetal shop.

So no matter what your needs are, give us a call and an experienced employee can help you with the information that you need.

Call 302-998-2257 for pricing & availability


Hentkowski, Inc. is dedicated to providing the best heating, air conditioning and electrical services and products to our customers in the Delaware, Southeastern Pennsylvania and Northeastern Maryland areas since 1968.

Service Areas in DE Include:
Wilmington, Hockessin, Newark, Yorklyn, Montchanin, Winterthur, Rockland, New Castle, Bear, Kirkwood, Delaware City, Saint Georges, Claymont, Port Penn, Middletown and Odessa

Service Areas in PA Include:
Landenberg, Toughkenamon, Avondale, Mendenhall, Kemblesville, Chadds Ford, Kennett Square, Lewisville, Pocopson, New London, Chatham, Unionville, Lincoln University, West Grove, Kelton, Concordville, Marcus Hook, West Chester, Thornton, Westtown, Chester Heights and Glen Mills

Service Areas in MD Include:
Elk Mills, Childs, Elkton and Chesapeake City

We service all brands:
Carrier, Trane, Lennox, York, Mitsubishi, Sanyo, Fujitsu, Bosch, Florida Heat Pump, SpacePak, Unico, Payne, Bryant, Armstrong, Rheem, Ruud, Janitrol, Honeywell, April Aire, Weil McLain, Peerless, Buderus, Crown, HB Smith, State, Bradford White and others

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Hentkowski, Inc. - 3420 Old Capital Trail - Wilmington, Delaware 19808 - Phone (302) 998-2257

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