WARWICK, N.Y. — The Espar Heater Systems E-Guardian 5 engine pre-heater is available in the complete Trans Tech Bus product line, the school bus manufacturer announced on Friday.
Officials said Trans Tech is the first Type A school bus manufacturer to offer the E-Guardian 5 as a factory-installed option.
Some of the benefits of the Espar system include a warm engine start without plug-ins, reduced engine idling for fuel savings, less engine maintenance and use of the Multi-Max Digital Controller for ease of use.
The E-Guardian 5 is EPA verified and California Air Resources Board approved.
“We are really excited and feel that our dealers and customers will benefit greatly because of the Espar system,” said Brian Barrington, national sales manager for Trans Tech Bus. “Being able to install the E-Guardian 5 and eliminate excess idling, save on engine hours, and the safety of a warm defrost makes this a great option for our customers.”
Paula Bishop, Espar’s manager of transportation and environmental affairs, added that Espar is “very pleased to be chosen as a supplier to Trans Tech Bus."
Espar engine pre-heater available in Trans Tech buses
The company’s E-Guardian 5 engine pre-heater is available on the Type A school bus manufacturer’s buses immediately. The E-Guardian 5 is EPA verified and California Air Resources Board approved, and officials say some of the benefits of the system include a warm engine start without plug-ins, reduced engine idling for fuel savings, less engine maintenance and use of the Multi-Max Digital Controller for ease of use.
More Management

Nominations Open for 2026 Contractor of the Year
We're looking for an amazing school bus contractor executive who embodies dedication, excellence, and innovation. Nominate the greats you know for SBF's 2026 award! Nominations close March 31.
Read More →
Honoring Heroes Behind the Wheel: Award Nominations Open
Nominations are now open for the second annual 2026 School Bus Driver Hero Award. Help us honor the drivers who selflessly dedicate themselves to ensuring the safety, well-being, and success of the students they transport every day.
Read More →
A New Chapter for Tennessee Pupil Transportation: A Vision Grounded in Service, Partnership, and Purpose
Check in with Tennessee’s new state transportation manager, Josh Hinerman, as he reflects on his journey, path to leadership, and priorities for student-centered transportation.
Read More →
Bobit Business Media Launches B2X Rewards for School Transportation Professionals
The new program rewards B2B audience readers for engaging with trusted content and suppliers, earning them points toward events, travel, and more.
Read More →
8 Ways To Simplify and Streamline School Bus Fleet Operations
What if your fleet technology actually worked together? Learn eight practical strategies to integrate multiple systems into one platform, unlocking clearer insights, stronger safety standards, and smoother daily operations.
Read More →
NAPT Announces Two New 2026 Regional Directors
NAPT announced the results of its 2026 special election, naming new regional directors for Regions 3 and 6.
Read More →
Building Stronger Partnerships: How School Transportation Can Improve Relationships With School Boards
Strong communication and trust between transportation leaders and school boards are essential to safe, effective operations. Here’s how to build a better partnership.
Read More →
NAPT Releases 2026 Love the Bus Toolkit
Get ready to promote our industry's favorite month of the year! Gear up to recognize Love the Bus Month with these new resources.
Read More →
5 Questions: Inside Micro Bird’s Market Growth
Let’s check in with the Canadian manufacturer with a new U.S. presence! Hear first-hand about Micro Bird’s expansion and the company’s long-term North American vision.
Read More →
School Bus Business Briefs: Tech Updates & Industry Recognition
From software updates to AI video search, major contracts, and global ratings, here’s the latest school bus supplier and OEM news.
Read More →
