Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Guardsman Register & Grille Cleaning: The Brooklyn Owner’s Guide
Register and grille cleaning for Guardsman systems typically runs $12 to $28 per vent in Brooklyn when done as part of a full air duct cleaning, or $85 to $180 as a standalone service call that includes removal, degreasing, sanitizing, and reinstallation. We keep Guardsman-compatible grille fasteners and replacement registers on the truck, so most jobs finish the same visit. You’ll usually notice the problem when a grille won’t sit flush, the paint has yellowed and flaked, or a vent that used to close quietly now grinds against its frame.
Most Guardsman registers in Brooklyn homes are stamped steel or aluminum with a multi-blade damper behind them. The damper is the first thing to go. In pre-war buildings near Prospect Park especially, we pull registers that haven’t been removed in decades, and the damper linkage has seized from decades of cooking grease, plaster dust, and the particular grit that settles out of steam-heat air.
Which Guardsman Models This Applies To
Guardsman registers and grilles are universal-fit in most cases, but the compatibility gotcha is the damper style, not the brand. Guardsman floor registers come in 2×10, 4×10, 4×12, and 6×12 inch standard openings, and the damper behind them is either a multi-blade steel unit or a single-blade cast aluminum unit. You cannot swap the grille and keep a mismatched damper; the blade profile won’t match and the register will bind the first time you try to adjust it.
For ceiling and wall grilles, Guardsman’s return-air grilles use a different frame depth than supply registers. A supply register has damper blades, a return grille does not. If someone installed a supply register on a return opening before you bought the place, the register is why the return whistles. Measure the rough opening, not the visible face plate, then call us with that number. We will match it to the right Guardsman-compatible part rather than selling you a face that covers the hole but fights the airflow. OEM Guardsman registers are worth the price if you care about color match on older brass or oil-rubbed bronze finishes; quality aftermarket equivalents in plain white or satin nickel are often indistinguishable once installed and run about 40% less. We stock both and will tell you which makes sense for your vents before we touch a screwdriver.
Styles & brands we work with




Signs Your Guardsman Register & Grille Cleaning Is Failing
- Grille will not sit flush against the floor or wall. This is almost always debris packed into the register shoe, the metal collar between the grille and the duct. Forcing the grille down bends the frame, and once a steel frame is bent, it will never seat properly again.
- The damper wheel spins but the blades do not move. The linkage pin between the wheel and the blade bar has sheared off or rusted through. We see this constantly in Brooklyn bathrooms where shower steam has been hitting the same register for fifteen years.
- Visible rust blossom or peeling paint on the register face. Once moisture gets under factory powder coating, the steel under it goes fast. Cleaning will stop the spread but will not restore the finish; this is usually the point where replacement costs less than continuing to fight it.
- A clattering or rattle coming from the vent when the system runs. The damper blade has come loose from its tension spring and is vibrating in the airstream. It sounds like the register itself is loose, but tightening the face screws won’t fix a flapping damper.
- Airflow from one vent has dropped noticeably while the room stays comfortable. This is usually a damper that has collapsed into the closed position, not a duct problem. Pull the register, look behind it, and you’ll see the blade folded down like a closed garage door.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
In Brooklyn, you should expect to pay between $12 and $28 per register for cleaning as part of a full system service, or $85 to $180 for a dedicated register and grille call that includes removal, ultrasonic or hand cleaning, lubrication of the damper linkage, and reinstallation. Replacement registers add $15 to $65 per unit depending on finish and whether you want OEM Guardsman or an aftermarket match. We quote the full system, not per task, and the written price covers everything down to the drop cloths, so the number you approve is the number on the invoice.
What drives the range: how many registers, how seized the dampers are, whether we are matching an old finish, and whether the register shoes themselves need cleaning back to the duct. Buildings with steam heat and original register work, which is half of Brooklyn, usually land at the higher end because the dampers have been stuck since the Clinton administration.
DIY or Call Us?
A register cleaning is one of the few tasks where careful DIY is fine. Lift the grille, vacuum the register shoe, wipe the blades with a degreaser, and dry everything before it goes back. The risk is the damper linkage. If the wheel turns but the blades do not follow, do not force it. That linkage is a stamped metal pin under spring tension, and when it lets go, it takes a chunk out of the blade bar with it. A broken dampers linkage inside the register shoe can also slice a finger when the blade snaps back. If yours is fighting you, stop.
If the register itself is bent, rusted through, or the damper will not hold position, the repair is replacement, and that is a $35 part, not a $500 project. Call us at (607) 536-9605 and we will tell you over the phone whether a cleaning will bring yours back or whether you are better off putting that money toward a new register. Either way, you will know the price before we walk in the door.
FAQs
Guardsman registers and grilles last 15 to 25 years in Brooklyn homes, with bathroom and kitchen registers failing sooner because steam and cooking grease attack the damper linkage and powder coating. If your registers are original to a pre-war building, assume they are at the end of their service life and budget for replacement rather than endless cleaning.
A bent steel frame or rusted-through face cannot be repaired to look or seat correctly, and the cost of labor to rebuild a damper linkage usually exceeds the price of a new register. Cleaning and lubrication can save a register that is dirty but structurally sound. Call (607) 536-9605 and we will tell you which one you have before we quote anything.
For a typical Brooklyn home with 8 to 12 registers, cleaning takes 45 to 90 minutes as part of a full air duct service, and replacement adds about 10 minutes per register. We photograph each register before and after so you can see exactly what was done without pulling a single grille yourself.
Yes, we stock common Guardsman-compatible sizes in white, satin nickel, and oil-rubbed bronze, plus OEM Guardsman replacements we can order for older finishes. If we do not have your exact size or finish, we will measure it on the first visit and return with the right part, never a close-enough substitute. Mortons Air Duct Brooklyn is an independent service provider and not affiliated with Lennox, Trane, Carrier, or Guardsman.
Call Mortons Air Duct Brooklyn at (607) 536-9605. Paul Adeyemi will tell you what he sees, what it costs, and what he plans to do about it, in that order.
Written by Paul Adeyemi, Owner, Mortons Air Duct Brooklyn at Mortons Air Duct Brooklyn, serving Brooklyn and nearby areas.