Is it OK to cover air vents?

Is it OK to cover air vents?

Is it OK to cover air vents?

You could mess with the air flow. Just because you cover the vent, it doesn't mean your HVAC system knows that. It will keep pushing air to those vents, and if they're closed, you could cause a buildup of air pressure and insufficient airflow which could damage your system.

Is blocking air vents bad?

Sure, you know you shouldn't block the supply vents — the ones you feel the cold (or warm air) blowing out of — or you'll diminish the supply of cool or warm air in the home. You may also know that closing a supply vent can create negative pressure and make the system run inefficiently.

Can an air vent cause a fire?

Fire Hazard Perhaps the most obvious (and most dangerous) result of a blocked vent is that it will cause a fire. ... When you're forcing your system to overwork, as mentioned in our first point, you put your furnace at high risk of setting on fire.

Can I cover a heating vent?

The short answer is that blocking or covering a heating vent is generally safe if it's done adequately. A good heating system of any kind will have enough leeway to account for one blocked vent and adjust the heat levels and airflow among its other vents.

Is it bad to cover a return vent?

Keeping your cold air returns clear is the key to keeping your A/C system in great shape. ... Avoid covering your cold air return vents with curtains, drapes or rugs. Always check your air filters and replace them when needed. Clogged air filters can also cause cold air return blockages.

Is it OK to cover a vent with furniture?

It is best practice not to cover vents with furniture. If you place furniture atop a vent, it may dry out the wood and damage your expensive sofa or armoire. You may also cause your furnace or air conditioner to work harder, resulting in a higher utility bill or premature wear to your system.

Is it safe to put furniture over a floor vent?

The short answer to this question is "No." Vents are there to provide for a necessary free flow of air. Block that flow, and your home will run sub-optimally, and you could even cause damage to your HVAC system.

What happens if I block a vent?

Blocking air return vents causes your system to work harder, as there is less air flow to move the air back to the furnace. This continued strain on the HVAC system can lead to a decrease in performance and more HVAC repairs down the road.

Is it bad to sleep next to a vent?

Furniture Damages: Although the safety of your baby is most important, putting a crib near a heating vent can be dangerous for the furniture too. If your crib is made of wood, dry heat can cause the wood to dry out and possibly crack.

What happens if you drop something down a vent?

A lost item can potentially block airflow, collect dust and debris, or even cause a smell of burning material if the object gets too close to the furnace.

Is it safe to cover a floor vent?

Covering the floor registers in your home is potentially dangerous if you cover them when using the heating or cooling system. The air pushes through the grates, but the covers block the air from escaping. When you turn the heat up, you push more air through, which raises your heating bill.

What causes a dryer vent to catch on fire?

When it comes to fire hazards in the home, your laundry probably isn’t one of the first things to come to mind. Dryer vent fires, however, are second only to stoves in causing house fires. The main cause for dryer vent fires is a buildup of lint in the dryer duct. A lint trap often does not stop all lint from entering ductwork.

Is it safe to put furniture over a heating vent?

It's unlikely but not impossible that blocking a heating vent and causing the furnace apparatus to overheat could cause a fire. Put the furniture over the vent in summertime, and you decrease the overall air flow from a central air-conditioning system.

What happens if you block a vent in Your House?

Blocking a vent or vents creates a pressure imbalance that causes the system to work harder, produce less cool air, use more expensive energy, and potentially results in a frozen coil -- a very expensive repair and replacement job. The house temperature and the replacement charge will have you breaking out in a sweat.


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