Termite Heat Treatment Cost in 2026

Termite heat treatment relies on a well-established biological threshold. Termites die when their tissue temperature reaches roughly 120 F for sustained periods. Field protocols target 130 F wood-core temperature for at least 35 minutes to ensure all life stages, including the most thermally tolerant eggs and the deepest gallery dwellers, exceed the lethal threshold by a safety margin. This target was established in entomology research from the late 1980s and 1990s and is now standard practice in commercial heat treatment.

The mechanism is straightforward: protein denaturation in the termite cells. At elevated temperatures, the proteins in cell membranes, mitochondria, and enzymes unfold and lose function. The termite essentially cooks at the cellular level. Unlike chemical pesticides, there is no biological pathway for termite resistance to develop against heat; protein denaturation is a fundamental physics constraint, not a chemical interaction.

The operator's challenge is uniformity. The wood members deepest inside the structure, particularly thick beams, joists buried under insulation, and wood encased in stucco or brick, take longest to reach lethal temperature. The crew uses wood-core temperature probes (typically 12 to 24 probes for a whole-home treatment) inserted into the deepest accessible wood members and monitored continuously throughout the heat-up and dwell phases. Treatment continues until every probe registers above 130 F for the full 35-minute dwell period. On well-accessible structures, this typically takes 6 to 10 hours from crew arrival to safe shut-down. On harder structures it can run 12 to 16 hours.

The equipment is propane-fired direct-fired heaters or indirect-fired heat exchangers, paired with high-volume ducting that distributes hot air into every room, the attic, and any accessible crawlspace. A whole-home treatment typically uses 2 to 6 heaters depending on structure size, each consuming roughly 5 to 15 gallons of propane during the treatment. Industrial fans circulate the heated air to prevent stratification. Doors and windows are kept closed but not sealed in the way a fumigation requires; mild air exchange is acceptable as long as the heaters can keep up.

Two emerging variants are worth knowing. Localized electric heat blankets (the same equipment used for bedbug heat treatment in hotels) can be wrapped around individual wood members for spot treatment of $300 to $900 per spot, but the application is rare for termite work because it does not address the rest of the structure. Microwave heat treatment (a directed microwave applicator that heats specific wall sections) is a niche method, $400 to $1,200 per wall section, occasionally used for confined infestations where chemical treatment is undesirable.

Heat treatment prep is significantly simpler than Vikane fumigation prep, but not zero. Items the homeowner must remove before treatment day: any candles (wax melts at 130 to 140 F), lipstick and similar cosmetic items, vinyl records (warp at 130 F+), pressure-sensitive packaging (some adhesives release at elevated temperatures), photographs (especially older film prints), pets (any living creatures including fish, reptiles, and insects in terraria), live plants (most houseplants tolerate brief 130 F exposure but florist plants will wilt permanently), refrigerated and frozen food, medication that requires temperature control, and any heat-sensitive electronics flagged by the manufacturer (most consumer electronics are fine, but a few rare items have specific limits).

Items that stay in place without issue: furniture, carpets, hardwood floors (wood is dimensionally stable through 150 F as long as humidity is controlled), books, clothing, kitchen cookware, dishes, sealed pantry items, mattresses (no requirement to unseal vapor-impermeable covers, unlike Vikane), framed art (oil paintings tolerate 140 F; some museum-grade conservation may want to confirm), and most household decor.

The crew arrives mid-morning. Setup takes 1 to 2 hours: heaters positioned at the home perimeter or in the driveway, ducting routed through doors and windows, temperature probes inserted into wood members, fans deployed. The heat-up phase runs 2 to 4 hours. The dwell phase (sustained 130 F+ wood core) runs the required 35-minute minimum plus an operator-determined safety margin, typically 60 to 90 minutes total. Cool-down takes 2 to 4 hours.

The homeowner returns once the structure is below 100 F and the crew has packed up. No certificate of re-entry is required (unlike Vikane). The wood may smell faintly of warm pine for a day, particularly in older homes. Indoor humidity may be lower than normal for a day or two as residual moisture evaporates during cool-down. No surface cleaning is required.

The single biggest reason heat treatments fail is operator inexperience. A crew that does not place enough temperature probes, or that mis-routes ducting and leaves a structural cavity unheated, can complete the protocol on paper while leaving live termites in a thermal cold spot. Reputable operators will provide the wood-core temperature log as part of the treatment certificate. If the operator declines to provide that log, find a different operator.