Home / Heat Treatment
Heat Treatment for Termites — Chemical-Free
Heat treatment for drywood termites in Southern California costs $1,200 to $3,500 for a typical home in 2026 — a chemical-free whole-structure treatment completed in 6-8 hours with same-day return. Industrial heaters raise interior wood temperatures to 135-150°F, killing all drywood termite life stages without fumigants, residue, or overnight lodging. Ultimate Termite Control (CA SPCB License #PR7791) provides free pre-treatment inspection, custom heat protocol, and clearance documentation across Southern California.
Get a Free Heat Treatment Quote
How Heat Treatment Works
Pre-Treatment Preparation
Remove plants, pets, candles, aerosols, and heat-sensitive items. Unlock all interior doors. The home is sealed for heating.
Heating Phase
Propane-fired heaters raise the internal temperature to 135–150°F. Heat penetrates wall voids, attic framing, and areas chemical treatments can't reach.
Lethal Temperature Hold
Sensors placed throughout the structure confirm all areas reach and hold lethal temperature. All termite life stages — eggs through adults — are eliminated.
Cool-Down and Re-Entry
The structure cools naturally. The entire process takes 6–8 hours for most homes. Re-entry is same-day — no overnight lodging required.
What to Remove Before Heat Treatment
Heat Treatment vs. Fumigation
| Factor | Heat Treatment | Tent Fumigation |
|---|---|---|
| Chemicals used | None | Vikane (sulfuryl fluoride) |
| Tenting required | No | Yes |
| Re-entry wait | Same day | ~3 days |
| Whole-house coverage | Yes | Yes |
| Works on subterranean | No | No |
| Residue | None | None |
| Cost range | $1,200–$3,500 | $1,500–$4,000 |
Frequently Asked Questions
How long does heat treatment take?
6–8 hours for most homes. You can return the same day once the structure has cooled.
Can heat treatment damage my home?
Properly monitored heat treatment is safe. Technicians use temperature sensors throughout the structure to ensure wood reaches lethal temperature without exceeding safe limits for the home.
Does heat treatment work on subterranean termites?
No — heat treats only inside the structure. Subterranean termites live in underground soil colonies and require a soil-applied liquid barrier treatment such as Termidor.
Is there any residue after heat treatment?
No — heat treatment uses no chemicals whatsoever. There is no residue of any kind. You can re-enter the same day.
How does heat compare to fumigation in cost?
Heat treatment is typically similar in cost to fumigation, ranging from $1,200–$3,500 for a whole home.
About the author
Written by Ryan Berry. Licensed California termite control operator (CA SPCB #PR7791), Anaheim, CA. Founded Ultimate Termite Control in 2007. 250,000+ inspections and 12,000+ residential customers across Southern California.
Last reviewed: June 19, 2026
Get a Free Heat Treatment Quote
Chemical-free termite elimination in Southern California. Contact us for a same-week inspection.