Auxiliary Power Units
Idle Elimination & Driver Comfort
Thermo King TriPac diesel and Envidia all-electric APUs deliver driver comfort, fuel savings, and idle elimination. The smart choice for modern fleets.
Auxiliary Power Units Lineup
Find the right unit for your operation — explore each model and request a quote.
Built for Performance. Backed by Sonsray Fleet Services.
Every Thermo King unit we sell is backed by the largest service network in North America — engineered to protect your cargo, reduce operating costs, and keep you compliant.
Idle Elimination
Eliminate main engine idling to comply with anti-idling regulations across all 50 states.
Fuel Savings
Save up to $4,000+ per truck per year — the APU pays for itself in operational savings.
Driver Comfort
Full HVAC comfort with heating, A/C, and 110V power for in-cab appliances.
DOE Verified
Department of Energy verified fuel savings and performance.
Regulatory Compliance
Meet CARB and state anti-idling regulations without compromising driver comfort.
Reduced Emissions
Significantly lower CO₂, NOx, and particulate emissions vs. main-engine idling.
The Sonsray Fleet Services Advantage
When you partner with Sonsray Fleet Services, you get more than equipment — you get North America's largest Thermo King dealer network.
Thermo King Authorized
Factory-authorized sales, service, parts, and warranty support nationwide.
13+ Locations
Coverage across the Western US with on-site and mobile service teams.
24/7 Emergency Service
Round-the-clock roadside support to keep your cold chain moving.
Genuine TK Parts
Massive in-stock inventory of Thermo King OEM parts ready to ship.
Request a Quote
Tell us what you're looking for and a local Sonsray representative will reach out to you promptly with pricing and availability.
- No obligation — just honest answers from equipment experts.
- Fast response from your nearest Sonsray location.
- Factory pricing, financing options, and trade-in evaluation available.
- We carry new, used, and demo equipment across all brands.
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