MENU
SEARCHEPA requested that manufacturers of fuel-operated heaters apply for validation of their products specifically for school bus applications. The new validation covers Espar heaters that were previously validated for Class 8 trucks.
On Feb. 4, Espar Heater Systems received notice of new EPA validation of E-Guardian heaters specifically for idle reduction in school buses.
The validation covers the following Espar models: E-Guardian 5 (Hydronic D5), E-Guardian 8 (Hydronic D8), E-Guardian 10 (Hydronic D10) and E-Guardian 12 (Hydronic D12); and the Espar Heater Systems Airtronic D2, Airtronic D4 and Airtronic D5.
The verification can be found on the EPA SmartWay Verified Technologies Web page listed as FOH (fuel-operated heaters).
Espar has been producing environmentally-friendly heater systems for idle reduction for many years and was an original EPA SmartWay partner. The company's fuel-operated heaters have previously earned EPA validation as well as CARB (California Air Resources Board) approval. EPA requested that manufacturers of fuel-operated heaters apply for validation of their products specifically for school bus applications.
This new validation covers Espar heaters that were previously validated for Class 8 trucks. E-Guardian heaters provide idle reduction, which reduces emissions and fuel consumption, reduces the frequency of oil changes and provides the added safety of defrosted windows for a clear view of the road and additional interior warmth for passenger comfort.
Check out some of the latest moves where alternative fuels and school buses intersect, including electric and propane bus deployments, new EV products, and an update from CARB.
Read More →
Keeping buses safe, reliable, and on schedule requires more than manual processes. This eBook explores how modern fleet software supports school transportation teams with automated maintenance scheduling, smarter video safety tools, and integrated data systems. Discover practical ways fleets are reducing breakdowns, improving safety, and saving valuable staff time.
Read More →
Check out some of the latest moves where alternative fuels and school buses intersect, including manufacturing expansions, major funding awards, and energy storage strategies.
Read More →
Electric school bus success hinges on long-term planning, which means smart financing, battery management, and service-based models that keep fleets reliable for years.
Read More →
Check out some of the latest moves where alternative fuels and school buses intersect, including new product announcements and bus deployments across the U.S.
Read More →
Nuvve’s latest partnership in New Mexico aims to help districts transition to electric school buses while strengthening local grid reliability.
Read More →
The push for electric school buses grows, but real-world hurdles mean districts are adopting EVs slowly and mixing them with diesel and propane.
Read More →
South Coast AQMD plans to replace 286 older buses with newer models, plus accompanying infrastructure, across 35 districts in the South Coast Air Basin.
Read More →
One program ends, another looks to be reimagined, and the Clean School Bus Program is in a holding pattern — here’s where each EPA program stands and what to expect moving forward.
Read More →
The Illinois district’s new electric bus fleet, supported by EPA grants, ComEd incentives, and Highland Electric Fleets, advances its commitment to sustainable school operations.
Read More →
