Ductwork Done Right for Long Island Homes

Most Long Island homes lose 20 to 30 percent of their heated and cooled air through duct leaks, especially when ducts run through unconditioned attics and crawlspaces. Sealing the joints with mastic and proper tape is one of the best dollars-per-comfort upgrades available. If your bills feel high or some rooms never get warm, leaky ducts are usually a big part of the story.

We do a visual inspection of every accessible run, look for telltale signs like dust stains around joints and disconnected boots in the attic, and feel for air escaping at seams when the system is running. On bigger jobs we can do a pressurization test that quantifies leakage. Most of the time a careful walkthrough is enough to find the problem spots.

Sometimes. Whistling vents, popping sheet metal, and the rumble of a return-air leak all go away once joints are sealed and the duct is sized correctly. If noise was your reason for calling, mention it on the first visit so we can listen for the specific issue while the system is running.

Often, yes. Heat pumps move more air at lower temperature differentials than gas furnaces, which means undersized or leaky ducts that were fine with the old equipment may not be fine with the new system. During every heat pump conversion estimate we look at the existing duct layout and flag what should be modified, sealed, or replaced.

A typical Long Island home with accessible ductwork takes one full day to seal properly. Bigger homes or attics with limited access can run into a second day. Modifications and partial replacements depend entirely on scope. We give you a clear timeline at the estimate.

If your ducts are noticeably leaky, yes. Homeowners we have sealed for typically report a 10 to 20 percent drop in heating and cooling costs, plus more even temperatures from room to room. Savings depend on how bad the ducts were to start, how well-insulated the rest of the home is, and the equipment you are running.