Air Duct Repair, Replacement and Installation in Jenkintown, PA
Almost all the ductwork we repair around Jenkintown went in long after the house was finished. These are large homes heated originally by radiators, and when cooling arrived somebody had to find a path for air where none had been designed. In this borough and across Elkins Park that path is usually the attic.
PJ MAC repairs, replaces and extends residential ductwork from the Greenwood Avenue office, and we take readings before recommending anything.
Flexible duct in an unconditioned attic
An attic retrofit puts the air handler and most of the branch runs into the hottest space in the building in July and the coldest in January. Flexible duct is easy to install up there and easy to install badly. It sags between joists, it is pulled around obstacles in long lazy curves, and the liner pinches at every collar where slack was left. Each of those costs airflow, and none of it shows from inside the house.
Ceiling stains that are not roof leaks
Cold duct sitting in humid attic air will sweat, exactly as a glass of iced water does. Where the outer jacket has torn or the insulation is squashed flat against a rafter, that condensation collects and eventually finds the plaster below. Homeowners reasonably call a roofer. If the mark appears in humid weather with the cooling running and stays dry through a storm, look at the duct above it.
Rooms the original retrofit skipped
Because these installations were awkward, whoever did them made choices. A back bedroom, a converted third floor, a sunroom or a kitchen addition often ended up with one undersized branch or with nothing at all. Fitting a properly sized run, or splitting an over-long branch in two, is duct installation rather than duct repair, and it is usually the only thing that will change that room.
Divided houses and older apartment buildings
Elkins Park and Cheltenham hold a good deal of big housing split into units, along with purpose-built apartment buildings of some age. Duct in those has been cut, re-routed and patched by several hands. Open ends abandoned in a ceiling cavity, branches still feeding a space that no longer exists, and returns drawing from a common hallway are all things we find.
What the work involves
- ✓Seams, plenum take-offs, collars and boot connections sealed with mastic rather than covered with tape
- ✓Sagging and kinked flexible runs pulled straight, re-supported and shortened where the route allows
- ✓Torn jackets and flattened insulation made good, so attic runs stop condensing onto the ceiling
- ✓Failed sections cut out and replaced in new insulated flex or in rigid metal, whichever the path suits
- ✓New branches added, and over-long branches split, for rooms the original retrofit under-served
- ✓Return capacity opened up where a room receives supply air but has no way to send it back
Measured, not guessed
The reading that settles most of these arguments is how hard the blower is working against the system attached to it, taken with a clean filter fitted. A high number alongside a healthy fan puts the restriction in the distribution, and no new equipment will move it. It is a short exercise, and it decides whether you are buying repair, replacement or nothing at all.
Jenkintown Duct Repair & Sealing — Questions We Get
Do you replace ductwork or only repair it?
Both, and what the run is made of decides which. Sealing and re-supporting an intact insulated branch is repair. A flexible run whose liner has collapsed, or a length of metal that has corroded through, gets cut out and replaced, because there is no longer anything there to seal against.
Can you add air conditioning ducts to a house that has radiators?
Yes, and it is a large share of the work here. The usual route is an air handler in the attic with insulated branches dropping to ceiling registers, though closet chases or narrow high-velocity tubing suit some buildings better. Where a room genuinely cannot be reached, a ductless head is the honest answer rather than a long, starved branch.
One bedroom is always several degrees warmer than the rest of the house.
In an attic retrofit that is normally the room at the end of the longest branch, and the air has been picking up heat the whole way there. Sealing and properly wrapping that single run, or splitting it into two shorter ones, changes the room. A new outdoor unit does not.
There is a brown mark on my bedroom ceiling, but only in summer.
That is far more often condensation from an attic duct than water from outside. The timing gives it away: roof leaks track storms, sweating duct tracks humid weather with the system running. The fix is to restore the vapor barrier and the insulation on the run above, and to check the branch is not lying against a rafter or buried in settled attic insulation.
My ducts are all in the attic. Should they be somewhere else?
In an ideal build, yes, since duct inside conditioned space always performs better. In practice, relocating it means opening ceilings and giving up closet space on every floor, which is rarely a sensible trade in an existing house. Sealing the runs properly and getting real insulation value around them recovers most of that difference for a fraction of the disruption.
Which areas does the Jenkintown office cover?
Jenkintown, Elkins Park, Abington, Cheltenham, Wyncote, Glenside, Rockledge, Ardsley, Oreland, Wyndmoor, Flourtown and Meadowbrook, along with the surrounding eastern Montgomery County communities.
Who serves Jenkintown
Jenkintown calls are handled out of our Jenkintown office at 814 Greenwood Ave #101, Jenkintown, PA 19046. Call (610) 672-3045 — we answer 24 hours a day.