Electrical fires don’t only start inside walls. Sometimes, they begin with everyday devices, especially when wear and tear or hidden faults go unnoticed. From aging appliances to poorly made products, electrical hazards can develop quietly over time.
While every home is different, our Fire Safety Team frequently encounters the same handful of devices when responding to fire hazard alerts. Many of these are things families plug in — and leave plugged in — every day.
Ting is designed to help catch these hidden dangers by detecting the early warning signs of an electrical fire: micro-arcing. But no system can eliminate every risk. That’s why it’s just as important to recognize the most common devices with risks, and know how to use them safely.
Here are five everyday devices Ting often identifies as sources of fire hazards, and what you can do to reduce your risk.
But I have Ting, why do I need this information? Ting (the sensor and service) is statistically proven to prevent ~80% of electrical fires, significantly reducing electrical fire risk in homes. Ting alone cannot eliminate 100% of electrical fire risks. Trust your senses. If something looks, sounds, or smells off, trust your instincts and please contact us immediately.
1. Dehumidifiers
Dehumidifiers are helpful for managing moisture, but are often used in out-of-sight places like basements, attics, or crawlspaces, making it harder to notice any electrical warning signs. Age, dust buildup, poor airflow, and low-quality components can all contribute to internal electrical failures that spark fires, especially in older units or those running nonstop.
What you can do to help stay safe:
- Check for recalls on your specific model via the CPSC database.
- Only use Energy Star-certified, UL-listed dehumidifiers.
- Place the unit away from walls or drapes to allow airflow.
- Clean the filter and coils regularly based on the manufacturer’s recommendations.
- Avoid running continuously without breaks. Instead, use a timer or humidity sensor.
2. Water Heaters
Water heaters are essential for daily comfort and routines, but they’re rarely top of mind when thinking about electrical safety. Both tank and tankless electric water heaters rely on high voltage connections and heating elements that can fail over time, especially if the unit is aging or wasn’t installed correctly.
Because water heaters are typically tucked away in utility closets, garages, or basements, early warning signs like overheating, scorch marks, or unusual cycling can easily go unnoticed. If corrosion or moisture reaches internal wiring, it can also trigger arcing and increase fire risk.
What you can do to help stay safe:
- Have your water heater inspected regularly by a qualified plumber or electrician.
- Ensure the unit is properly grounded and connected to a dedicated circuit.
- Keep the area around it clear of clutter and flammable items.
- If your heater is over 10–15 years old, watch for signs of wear, including flickering power, breaker trips, or inconsistent water temps.
- Never ignore the smell of burning or buzzing sounds coming from the unit.
“Ting identified a fire hazard from arcing electrical equipment. Eventually, we narrowed it down to our water heater. Although it looked normal on the outside and still produced hot water, a plumber found that the lower heating element had burned out. The upper element was drawing extra current, doing double duty trying to heat water without the help of the lower element. We were able to have repairs done before losing hot water and before having flooding from a ruptured water heater.”
Todd J. | Pennsylvania
3. Air Conditioning Units
Air conditioners draw high power and often run for extended periods during peak heat, which can strain wiring, overload circuits, or reveal aging components. Improper installation, damaged power cords, blocked ventilation, or use with power strips and extension cords can all increase the chance of overheating or electrical arcing.
What you can do to help stay safe:
- Plug window units directly into a grounded wall outlet—never a power strip or extension cord.
- Inspect cords and plugs for damage before each season.
- Make sure central A/C systems are professionally serviced yearly.
- Keep filters clean and vents unobstructed to reduce strain on the system.
- If your unit trips the breaker or emits a burning smell, turn it off and have it inspected immediately.
4. Heating Pads and Electric Blankets
These cozy comfort items can be surprisingly dangerous. Ting regularly detects unsafe electrical arcing from heating pads, electric blankets, and even heated pet beds. Arcing can result from poor manufacturing, aging wires, or damage to the cord, putting loved ones and pets at serious risk.
What you can do to help stay safe:
- Use UL-certified products from trusted brands.
- Always unplug after use, and never leave one of these devices plugged in overnight or unattended.
- Inspect cords frequently for fraying or heat damage.
- Don’t fold, bunch, or place these items under heavy objects.
- Replace every 10 years, even if it still works!
“I’d received a fire hazard alert from Ting and received a call from the Fire Safety Team, who said that it appeared to be a pet heating pad. They asked me to unplug it and as soon as I did so, the arcing had stopped. I looked at the heating pad which was significantly hotter than it was supposed to be and sort of melting. I’m so thankful the issue was resolved and my cats weren’t harmed or worse.”
Allen P. | Wisconsin
5. Space Heaters
They may be small, but space heaters pack a lot of power. These high-powered devices draw significant electricity and generate intense heat, which can quickly become hazardous if they’re used improperly or show signs of wear.
Many space heater-related fires result from overheating cords, loose plugs, poor-quality components, or placement near flammable materials. Older units are especially risky, and even modern ones with safety features can become dangerous if damaged or misused.
What you can do to help stay safe:
- Plug directly into a wall outlet, never a power strip or extension cord.
- Keep at least 3 feet of space around the heater.
- Never leave it running unattended: always turn it off and unplug it when not in use.
- Choose models with tip-over shutoff and overheat protection.
- Check cords and plugs for damage before each use.
Bonus Tip: What You Plug Into Matters
Even the safest device can become a hazard if it’s plugged into an unsafe outlet or setup.
- Avoid using power strips or extension cords for high-powered appliances like space heaters or dehumidifiers.
- Always make sure the plug fits snugly and securely.
- If a plug is loose, wobbly, or pulling downward due to tension from the cord, it could lead to arcing or overheating (both serious fire risks).
- Replace any outlets that feel loose, warm, or show signs of wear.
- When in doubt, plug directly into the wall and check periodically for damage.
Even everyday devices can pose serious risks when they’re damaged, aging, or used improperly. A little awareness goes a long way in preventing electrical fires. Ting is here to help detect what you can’t see, but staying informed and keeping a close eye on high-risk appliances adds an extra layer of protection for your home and family.