Homeowners

Is Your House Haunted? 6 Spooky Noises and What They Really Mean

It’s the scratching in the walls after midnight and the footsteps you swear you heard upstairs. Or maybe it’s the sudden bang that makes you jump off the couch.

Is your home haunted? Probably not. But it might be trying to tell you something.

Homes make strange noises as temperatures change, pipes carry water, and heating and cooling systems cycle on and off. While most sounds have ordinary explanations, some can signal problems that homeowners shouldn’t ignore.

Jason Stom, owner of Clear the Air Cooling & Heating in Pearland, Texas, has encountered plenty of supposedly “supernatural” sounds.

“A lot of the ‘my house is haunted’ calls we get turn out to be the heating and air system,” said Stom.

Those with home warranties may be able to have much of the cost of the work covered. For more expensive projects, homeowners may want to explore a home equity loan.

Before calling a paranormal investigator, here’s what might really be going bump in the night.

1. Scratching inside the walls

If something sounds like it’s clawing through your walls after dark, the culprit may have four legs and a tail.

Mice and rats are especially active during witching hours. That’s when they search for food and move through hidden areas of a home.

“So, while you might occasionally see or hear them during the day, they are significantly more active in the late evening and throughout the night,” said David Joles, COO of PURCOR Pest Solutions, based in the Tampa Bay, Fla. area.

Rodents often shelter in attics, basements, and wall cavities. Homeowners should look for droppings, gnaw marks, or damaged food packaging. A pest control professional can identify an infestation and determine how animals are getting inside.

2. Loud bangs and mysterious footsteps

A sudden bang or what sounds like footsteps upstairs can be unnerving, especially when nobody else is home.

But the explanation may be hiding in the ceiling.

Michael Turner, co-founder of Green Cooling Solutions in Sarasota, Fla., said popping and banging is often from sheet-metal ductwork expanding and contracting as temperatures change.

Flat sections of ductwork can also flex when the blower starts, producing a startling bang.

Similarly, wood framing and pipes can contract as a home cools overnight. This can create creaks and knocks that resemble footsteps.

Occasional noises are generally harmless. However, a new or unusually loud bang may indicate restricted airflow or another problem worth investigating.

3. Whistling or howling from the vents

An eerie whistle coming from a bedroom might sound like something out of a horror movie.

More likely, it’s air struggling to pass through the heating or cooling system.

Stom said dirty filters, closed vents, and return grilles blocked by furniture are common culprits. Homeowners can try replacing the filter, opening vents, and moving furniture away from return grilles.

If the noise continues, the ductwork may be improperly sized or require professional attention.

4. Dripping or gurgling behind the walls

Hearing water when nobody is using a faucet can be particularly unsettling.

Sometimes the source is an air conditioner or high-efficiency furnace, both of which can produce condensation that drains through a pipe.

Stom said gurgling or dripping near the equipment may indicate a clogged drain line. If water backs up, it can overflow and damage ceilings or walls.

But persistent dripping inside a wall or ceiling could signal a hidden plumbing leak, according to Chad Herron, owner of Eversafe Restoration in St. Louis.

“That can be a slow leak, and slow leaks are the ones we find after the mold has already started,” said Herron.

He recommends turning off every faucet and water-using appliance, then watching the water meter for about 30 minutes. If it continues moving, water may be leaking somewhere in the home and a professional should investigate.

5. Banging pipes when the water shuts off

A loud thud immediately after turning off a faucet or running the washing machine may be caused by water hammer.

This happens when flowing water stops suddenly, creating a pressure surge that makes pipes bang or vibrate.

Herron said the force can cause loose pipes to strike the framing inside walls.

“One bang now and then is not an emergency, but pipes that bang every day can work a fitting loose over time,” said Herron.

A plumber can check for excessive water pressure, unsecured pipes, or the need for a water hammer arrestor.

6. Squealing or grinding from the basement

Some of the scariest sounds come from mechanical equipment.

A squeal, screech, or grinding noise when the heating or cooling system runs may indicate a worn blower motor bearing or another failing component.

Stom warns that motors making these noises can fail soon afterward.

Unlike occasional creaks or pops, mechanical grinding shouldn’t be ignored. Homeowners should arrange a service call before the equipment stops working altogether.

When should homeowners worry?

The key is recognizing what’s normal for your home and what’s changed.

Stom recommends paying particular attention to noises that become louder, happen more frequently, or appear alongside other warning signs.

“New noises, louder noises, or a noise paired with a smell, a water spot, or a jump in the power bill mean it’s time for a service call,” said Stom.

Buzzing or sizzling near electrical equipment requires prompt attention from an electrician. If you suspect a gas leak, leave the building immediately and contact your gas utility or emergency services from outside.

For less urgent mysteries, note when the sound occurs, where it originates, and whether it coincides with running water, an appliance, or the heating system.

Chances are that your home isn’t haunted. But figuring out what’s making those spooky sounds could save you from something considerably scarier: an expensive repair bill.