If your duct joints are not sealed properly, you’re basically letting your hard-earned money just fly out through leaks, and that’s a total waste.

So, here’s the thing: sealing your duct joints right can seriously boost how well your heating and cooling system works. Start by checking all the visible duct joints for gaps or cracks. Use mastic sealant because it’s thick and sticky, perfect for filling in those gaps so no air slips out. If you’re not into mastic, metal foil tape is also solid . just don’t use regular duct tape since it breaks down fast. When applying sealant or tape, make sure the ducts are clean and dry, so it sticks better. Press the tape down firmly and smooth out any bubbles to avoid leaks. Also, don’t forget to check joints inside walls or ceilings because those hidden spots can be sneaky energy wasters. Doing this can cut your energy bills and keep your place comfy without cranking up the thermostat.

One of the biggest mistakes people make when dealing with duct joints is using regular duct tape instead of metal foil tape or mastic sealant . plain duct tape peels off quickly and causes leaks. Another common issue is skipping the cleaning step before sealing, which means the sealant or tape won’t stick properly, so you end up with leaks anyway. Lastly, some folks only seal the easy-to-see joints but ignore those hidden inside walls or crawlspaces, where most leaks happen; the fix here is to do a thorough inspection and seal all accessible joints to really stop air loss.

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