#House creaks install#
#House creaks plus#
#House creaks professional#

That's a nice perk.īut hold on! This isn't as simple as grabbing some duct wrap some tape and setting aside an afternoon.īefore you insulate the ducts, you should air seal them to plug all the leaks. During warmer months, it also reduces the likelihood that condensation will form on the ducts. Wrapping your ducts in insulation should solve your 'cold winter morning' heating duct popping noise. Here are two ways to solve the problem: 1. Ok, now you know why your ducts might be making these sounds.

#House creaks plus#

You'll get that signature furnace knocking sound whenever the system kicks on after sitting idle plus additional noise from the wimpy ducts. Oh, and the scenario above about warm air on cold metal? All of that applies in this situation as well. Yeah, you bet they're gonna pop and bang when the system turns on! So now you've got ducts that are too small for the large amount of air being pushed through them and they're made out of thin, flimsy metal. When they don't, they'll usually undersize the ductwork and/or oversize your HVAC system.

#House creaks install#

It's also that many contractors don't bother to install ductwork that's the right size. If the metal is thin, any given section of it is likely to pop inward or outward if placed under enough pressure.īut wait! It's not just that the ducts are made out of thin sheet metal. One of the ways they cheap out (other than not insulating your hard pipe ducts) is to use really thin sheet metal that really shouldn't be used for duct material. So do HVAC companies, but that's a whole other blog. Cheap, thin, undersized sheet metal ducts It doesn't mean anything is broken, but it's definitely irritating! 2. When this happens, an air duct popping noise may result from the rapid expansion of the cold metal.

Ever touched a bare metal handrail on a frigid winter morning? That's basically the condition of your ducts at 6:00 AM in January.Īs soon as the hot air from the furnace hits the cold ducts, the metal starts to expand really quickly. If the furnace is in your crawlspace, both the furnace and the ductwork coming off the unit are very cold. That's especially true when your ducts aren't insulated, which they aren't in many older homes.Ĭonsider a cold winter morning when your furnace or heat pump starts up after being idle for an hour or more. Sheet metal ducts with no insulationĭuring the hottest and coldest times of year, the temperature on one side of your ducts is dramatically different from the temperature on the other side. With that caveat out of the way, these are perhaps the two most common reasons you'll have this problem: 1.

#House creaks professional#

The only way to really know why you're hearing what you're hearing is to have an HVAC professional diagnose the problem. Why are you hearing a furnace popping noise?īefore we get into the weeds here, keep this in mind: The specific cause of your heating duct popping noise might be unique, different, or outside the norm. Until you address it, the furnace knocking sound probably won't go away. The bad news is that there's an issue with your ductwork. In other words, it's unlikely that your furnace or heat pump is broken or that there's some kind of loose part you need to be worried about. The good news is that nothing is probably 'wrong,' per se.

If you hear an air duct popping noise or a furnace banging noise, there's good news and bad news. And when they're coming from your air ducts, you might be worried there's something wrong with your HVAC system.