Heat kills bed bugs and their eggs when their bodies reach about 118°F for 90 minutes, or 122°F for a shorter time. Professional whole-room heat treatment raises room air to roughly 135°F to 145°F for several hours so that heat soaks into mattresses, furniture and wall gaps, and usually clears an infestation in one visit. It costs about $1 to $3 per square foot. DIY heat works for belongings in portable heat chambers and dryers, but heating a whole room with space heaters is unsafe and rarely works.
Table of Contents
What Temperature Kills Bed Bugs?
| Temperature | Effect |
|---|---|
| Below 113°F | Bed bugs survive, and many move away from the heat |
| 113°F | Kills adults only after long exposure (hours) |
| 118°F | Kills adults and eggs after about 90 minutes |
| 122°F | Kills all stages quickly, within minutes |
| 135°F to 145°F room air | Typical professional target, so hiding spots reach lethal temperature |
| Steam, 160°F+ at the tip | Kills bugs and eggs on contact in seams and cracks |
The lethal temperatures come from University of Minnesota research. The key point is that the heat must reach the bugs, not just the air. A mattress, a pile of clothes or a gap behind a baseboard heats up much more slowly than the room.
How Professional Heat Treatment Works
- Prep: you remove or protect heat-sensitive items (candles, crayons, medicines, aerosols, plants, pets, vinyl records, some electronics) and loosen clutter so air can move.
- Heating: technicians bring in electric or propane heaters and fans and raise the room to about 135°F to 145°F.
- Monitoring: wireless temperature probes go inside mattresses, couches, wall voids and piles to confirm every spot reaches lethal temperature.
- Hold: the heat is held for several hours; a typical home takes 6 to 8 hours.
- Follow-up: many companies add a residual insecticide at the edges to catch bugs that escape into cooler areas.
Pros and cons
| Pros | Cons |
|---|---|
| Kills all stages including eggs | Higher upfront cost than one chemical visit |
| Usually one visit | No lasting residual protection on its own |
| No chemical residue on beds and furniture | Heat-sensitive items must be removed |
| Works against insecticide-resistant bugs | Bugs can escape to cool spots if the job is rushed |
See prices by method in bed bug treatment cost.
DIY Bed Bug Heat Treatment
What works
- Clothes dryer: 30 minutes or more on high kills bed bugs in clothes, bedding, shoes and stuffed toys. See bed bugs in clothes.
- Portable heat chambers: fold-up heated boxes or bags (brands include PackTite and ZappBug) heat luggage, books, shoes, electronics and small furniture to lethal temperature. Use a probe thermometer inside the load.
- Steamers: dry-vapor steamers treat mattress seams, couch seams and bed frames directly. Move the nozzle slowly, about an inch every few seconds.
- Hot car in summer: unreliable; car interiors often don’t reach 120°F evenly.
What doesn’t work
Turning up the thermostat or running space heaters in a room won’t reach lethal temperatures inside furniture and walls, and the EPA warns it can start fires. It can also drive bugs into neighboring rooms. Whole-room heat needs professional equipment and monitoring.
Is Heat Treatment Worth It?
For established infestations across a bedroom or several rooms, heat is often the fastest and most complete option, especially where bugs resist sprays. For a very small, early infestation, encasements, interceptors, steaming and laundering may be enough. Confirm results after any treatment with how to know bed bugs are gone.
DIY heat tools
- PackTite portable heat chamber for luggage, shoes and books
- ZappBug heat chamber for larger loads and small furniture
- Dry-vapor steamer for mattress and couch seams
- Wireless probe thermometer to check the core of each load
Whole-room heat needs professional equipment. These tools treat belongings.
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FAQs
Bed bugs and their eggs die at about 118°F held for 90 minutes, or 122°F for a shorter time. Professionals heat rooms to about 135°F to 145°F so hiding spots reach those temperatures.
Yes. Heat kills bed bug eggs as well as nymphs and adults when the eggs reach lethal temperature, which is why heat often works in one visit.
A typical home heat treatment takes 6 to 8 hours, including heating up, holding the temperature and cooling down.
Professional heat treatment usually costs about $1 to $3 per square foot, or roughly $1,000 to $3,000 or more for many homes.
Not safely. Space heaters and thermostats don’t reach lethal temperatures inside furniture and walls and can cause fires. DIY heat works for belongings using a dryer, steamer or portable heat chamber.
Sources
- US EPA: Do-it-yourself bed bug control
- University of Minnesota Extension: Bed bugs
- Angi: Bed bug extermination cost (2026)
Facts in this guide are checked against the sources above and reviewed when they change. See how we research in our editorial policy.
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