Why Is My House Making That Noise?
Pennant Real Estate
Why Is My House Making That Noise?
October is the month for things that go bump in the night. Most of the time, though, the bump has a very ordinary explanation! As the nights get cooler and the heat starts running, houses get a little more talkative.
Before you start tracking down a sound, take a moment to notice the details:
- When does it happen?
- Where does it seem to come from?
- What else was going on, like the heat turning on or a faucet shutting off?
Those notes will help you understand the sound. They’ll also help if you decide to call a pro. No ghost-hunting equipment required!
Here in Greater Baton Rouge, from Prairieville to St. George to West Baton Rouge, fall brings big swings between warm afternoons and cool nights. That’s exactly when homes like to speak up. Let’s go through the most common sounds, what they usually mean, and when it’s smart to call for help.
Why Do Homes Creak and Pop?
Short answer: Building materials grow and shrink with changes in temperature and moisture, and that movement can make noise.
Wood, drywall, and metal fasteners all expand and contract. As they shift against each other, they can creak, tick, or pop.
Fall makes this easier to notice:
- A house warms up on a sunny afternoon, then cools down overnight.
- Roof framing and siding may pop as they cool and shrink.
- Floors can creak more when indoor air gets drier during heating season.
- Nights are quieter, so every small sound seems louder.
A few creaks here and there are part of how most homes behave. But new cracks in walls or ceilings, doors that suddenly stick, or floors that feel soft or bouncy are worth having a professional look at.
What’s Making Noise in the Pipes?
Short answer: Banging is often water hammer, ticking is usually warm pipes expanding, and running water when nothing is on needs a closer look.
Banging or knocking after a faucet or appliance shuts off. This is often called water hammer. When a valve closes fast, the moving water stops all at once, and the pressure change can make pipes thump or shake. Washing machines and dishwashers are common causes because their valves close quickly. A plumber can check your water pressure and pipe supports and suggest ways to quiet things down.
Ticking when hot water runs. Pipes expand as they warm up and can rub against framing or straps. The ticking usually stops once the pipe reaches full temperature.
Running water when nothing is on. This one deserves attention. A toilet that refills on its own every so often may have a worn flapper. If you can’t find the source, turn off everything that uses water and check your water meter. If the meter is moving, you could have a leak. That’s a good time to call a plumber.
What Are Those Sounds From Heating Systems and Appliances?
Short answer: Clicks, hums, and whooshes are normal. New grinding, squealing, or loud banging is not.
Heating equipment makes a whole range of regular sounds:
- Furnaces click when they ignite, hum while running, and whoosh as the blower moves air.
- Metal ductwork may pop or tick as it heats up and cools down.
- Boilers and radiators can gurgle or knock when air is trapped inside.
- Heat pumps may whoosh or hiss when they switch into defrost mode on cold days.
- Refrigerators and water heaters buzz, hum, and click as they cycle on and off.
What matters most is change. If you hear new grinding, squealing, rattling, or loud banging when your system starts, call a heating technician.
Safety first: If you ever smell gas, leave the home right away and call your gas utility or emergency services from outside. If a carbon monoxide alarm sounds, get everyone outside and call for help.
Why Does My House Whistle or Rattle When It’s Windy?
Short answer: Wind pushing through small gaps causes whistling, and loose outdoor parts cause rattling.
On a breezy fall evening, a house can make sounds that seem way bigger than their cause.
- Whistling: Air forced through a small gap around a window, door, or attic hatch can make a high-pitched whistle. Worn or shifted weatherstripping is a common culprit.
- Rattling and tapping: These often come from outside parts moving in the wind, like dryer vent flaps, bathroom exhaust dampers, loose gutters, or branches brushing the roof or siding.
Take a walk outside the next day, near where the sound seemed to come from. That often solves the mystery! If the cause is on the roof or out of reach, leave it to a professional.
What’s That Scratching or Scurrying in the Walls?
Short answer: Repeated scratching in one area can mean mice, squirrels, or other animals have found a way inside.
As the weather cools, animals look for warm spots. Timing can give you a clue: mice are often more active at night, while squirrels tend to move around during the day.
Look for other signs:
- Droppings
- Chewed materials
- Small openings around the foundation, roofline, or where utility lines enter the house
If the sounds keep coming back, call a pest control or wildlife service to find out what’s there and how it’s getting in. Some areas have specific rules about removing wildlife, and a licensed professional will know them.
What Should I Tell the Professional?
Remember those notes you took at the start? Now they come in handy! When you call, share:
- What the sound is like (banging, ticking, scratching, whistling)
- Where you hear it
- When it happens
- What else is going on at the time
- How long it’s been happening, and whether it has changed
A short recording on your phone can help, too.
For example, “The pipes bang every time the washing machine finishes filling” gives a plumber much more to work with than “the pipes are loud.”
Quick Answers to Common Questions
Is it normal for my house to make noise at night?
Yes, very often. Temperature changes cause materials to shift, and the quiet of night makes small sounds easier to hear.
Why are my pipes banging when the washing machine stops?
That’s likely water hammer, caused by a fast-closing valve. A plumber can check your water pressure and pipe supports.
When should I worry about a noise?
Call a professional for new cracks, sticking doors, soft or bouncy floors, grinding or squealing from heating equipment, or a water meter that moves when everything is off. If you smell gas or a carbon monoxide alarm sounds, get outside and call for help right away.
Questions About Your Home? I’m Here to Help!
Whether you’re settling into your home or thinking about your next move, we’d love to chat. Reach out to Pennant Real Estate anytime!
Pennant Real Estate, serving Greater Baton Rouge, including Prairieville, St. George, and West Baton Rouge.
Equal Housing Opportunity.