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Question DetailsAsked on 5/28/2013

I am looking for someone to do video air duct inspection on a heat pump system. Who does this?

Allentown, PA area. There seems to be very little air flow out the ducts and my mom says there is a lot of dust coming from the vents. I did change the filter. The duct work right above the air handler is coming apart and I have fixed it a few times, but my fear is the duct work in the crawl space between the first and second floors is coming apart too. This area is non-accessible and the only way to check the ducts would be to run a camera though the ducts. I cannot find anyone that does this. Many companies say they will clean the ducts, but without a visual check how do they know what they are doing or that they did anything at all? How do they know they are not damaging anything?

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4 Answers


Commercial HVAC companies, as opposed to homeowner ones, commonly have cameras, sometimes steerable to go around sharp bends and intersections. If there is no HVAC contractor within reasonable driving distance of your location, Drain and sewer companies can do this also as their cameras (require a color one - little added cost, and make a WORLD of difference in actually seeing what is going on) can typically run 100 feet or more - though you might want to be sure they clean the cable well before running it through your ducts. Obviously, an HVAC contractor can better interpret what you are seeing.

You have hit the nail on the head - if you have flex duct as opposed to galvanized metal ducting, cleaning can cause hidden damage, with resultant mold and lint buildup problems.

One other possibility is to run a static airflow test on the ducting - where it is blocked at one end, and pressured up with low air pressure, then checked for leakage rate, which would show any significant holes, loose seams or tears, although it would not tell you exactly where they are, which would be nice to know for repair purposes.

Answered 7 years ago by LCD


Duct leakage can be tested and sealed, even inbetween floors by and their independent contractors. All the information you need is on the website.

That said, dirty coils,filters and blowers , will cause low air flow too. Any AC contractor that is highly rated on Angie's List, can handle that.


Answered 7 years ago by BayAreaAC


I believe the main trunk is ductboard, not metal, so I do not think Aeroseal will work. The tape on the ductboard in the hall closet completely let go and the gaps were 2 or 3" not something a spray will seal. I taped it up several times with duct tape and last time I used the special UL listed aluminum duct tape. I have one person coming out Friday from PROAC Corp. to look at it. They do video inspections. I'll see what they say cost will be.

Answered 7 years ago by Guest_9508049


A gap that large in ductboard would be unusual inbetween floors,as the duct has to "move" to open that far.

Here in Floridawe seal ductboard with Aeroseal, all the time, haven't found one yet that we can't seal.


Answered 7 years ago by BayAreaAC

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