How a Bed Bug Heat Treatment Works

The numbers that matter

Extension research gives two thresholds. Virginia Tech’s 2024 fact sheet: “the thermal death point for bed bug adults and nymphs is 118°F, but the thermal death point for bed bug eggs is 122°F.” A peer-reviewed study of commercial heat treatments (Kells & Goblirsch, University of Minnesota, 2011) measured the temperature that kills 99% at 48.3°C (118.9°F) for adults and 54.8°C (130.6°F) for eggs, with eggs needing far longer at lower temperatures. We treat to the stricter reading: every probe, including the ones in the coldest cracks, at or above 130°F for a sustained hold.

Why the room temperature is not the test

Virginia Tech again: “ambient temperature (the temperature of the heated air in the home) is not relevant! Bed bugs are not flying in the air, and the ambient temperature is no predictor of the temperature at floor-wall junctions, or the spaces underneath baseboards.” Technicians commonly run the air to about 135°F for four to five hours precisely so the slow spots catch up. The report you get shows probe readings from those spots, not a thermostat.

The day, start to finish

• Inspection first. We confirm it is bed bugs and map where they are. Heat is overkill for a single bug that hitchhiked in a suitcase; we will say so.
• Prep is light. Remove what heat damages — houseplants, pets, candles, lipstick, aerosols, lighters — and unplug electronics. Do not deep-clean or move clutter around; it scatters bugs. The list →
• Heat-up and hold. Electric heaters and air movers; we rotate furniture and lift mattresses mid-treatment so no side stays cool. Probes logged throughout.
• Residual, optionally. Virginia Tech’s advice: because even a good heat treatment cannot be guaranteed 100%, “ask your technician to apply a residual insecticide after the heat treatment is completed.” We offer it; you choose.
• Report. Probe readings, hold time, what was found, what to watch for. Useful to a landlord, a property manager, or you.

What heat does not do

It does not treat the neighbor’s unit, and in a multi-family building that is where the re-infestation comes from. It does not protect you from bringing bugs home again. And not every heat system is equal — the extension sheet says exactly that. Ask any vendor how many probes they place and where. If the answer is “we watch the thermostat,” keep calling.