Ductwork Repair and Sealing in Hamilton, NJ

Ductwork Repair and Sealing in Hamilton

Much of Hamilton's housing was built before central cooling was normal and often before ductwork was, so heating and cooling arrived separately and at different times. That is why so many houses here run a boiler for heat and something entirely different for cooling.

About 64% of homes in Hamilton predate 1970, so the original heating system has usually been replaced at least once and cooling added afterward; 78% of them heat with natural gas, so furnace and boiler work is the bulk of what comes up here. (US Census ACS 2022)

How to tell it is the ducts and not the furnace

Three symptoms point at distribution rather than equipment, and all three are commonly misdiagnosed as a system too small for the house.

One or two rooms that never match

If the rest of the house is comfortable and the back bedroom is not, capacity is fine — the air is not getting there. Long runs, crushed flex duct, a damper closed years ago and forgotten, or a run added during a conversion that the trunk was never sized for.

High bills with equipment that tests healthy

A system in good order that runs constantly and costs a lot is usually losing conditioned air before it reaches the rooms. In a New Jersey house with ducts through an unconditioned attic, that loss can be substantial.

Dust that returns within days of cleaning

This one is nearly diagnostic. Leaks on the return side put the ductwork under negative pressure and draw air out of the attic, crawl space or wall cavities — along with everything in it. Cleaning the house does not help because the source is structural.

What repair actually involves

Less dramatic than it sounds, and usually a day or two.

Sealing joints properly

Mastic — a brushed-on compound — at every joint, boot and plenum connection. Cloth duct tape, despite the name, dries out and releases within a few years, and finding it hanging off a joint in an attic is routine. Foil tape is acceptable; mastic is better.

Insulating what runs through unconditioned space

A duct crossing a 130-degree attic in July, or a 20-degree crawl space in January, is losing energy through its walls even where it does not leak. Insulating those runs is cheap and immediately effective.

Fixing the flex duct problems

Flexible duct is fine installed properly and terrible installed badly. Sags, sharp bends and compression where it passes a joist all restrict airflow substantially. Supporting and straightening runs is unglamorous work that frequently solves the complaint on its own.

Balancing

Adjusting dampers so each branch gets its intended share. Free, if the dampers exist and someone takes the time.

The full guide: everything about ductwork repair and sealing — how the job works, what decides the price, and the questions worth asking before you book — is on the service page. This page covers what is different about it in Hamilton.

Areas we cover in Hamilton

That includes properties near Berkeley Square, Cadwalader Park, Colonial Lake Park and Douglass House Historic Site, and everywhere else in Hamilton.