DPF Cleaning
DPF Cleaning Services for Emergency Vehicles
A clogged or degraded Diesel Particulate Filter doesn't just trigger a warning light. It robs your apparatus of power, increases fuel consumption, and can put a critical vehicle out of service at the worst possible time. At Allegiance Fire & Rescue, we provide professional DPF cleaning services specifically for emergency vehicles, performed by certified technicians who understand the demands placed on fire apparatus and ambulances every day.
DPF Maintenance Matters
Modern diesel engines in fire apparatus and ambulances are equipped with Diesel Particulate Filters (DPF) to capture soot and exhaust particulates. Over time, those filters become loaded with ash and debris that cannot be burned off through normal regeneration cycles alone. When that happens, your apparatus pays the price.
Neglected DPFs lead to:
- Reduced engine power and throttle response
- Increased fuel consumption
- Forced regeneration cycles that take apparatus out of service
- Potential engine damage from excessive backpressure
- Costly filter replacements that regular cleaning could have prevented
For emergency vehicles, these aren't just maintenance inconveniences. They are operational risks. A fire truck or ambulance that is down for unplanned repairs is a gap in your community's protection.


How Often Should a DPF Be Cleaned?
Most emergency vehicle manufacturers recommend DPF cleaning on a scheduled interval, typically after 100,000 to 150,000 miles, 1,500 - 2,000 hours or annually, depending on duty cycle and operating conditions. However, vehicles that spend significant time idling, such as apparatus on extended scene standby or ambulances running extended calls, may require more frequent service.
Signs that your DPF may need attention sooner include:
- Illuminated DPF warning or check engine light
- Noticeable loss of power under load
- Increased frequency of active regeneration cycles
- Elevated exhaust temperatures
- Decreased fuel efficiency
If you're seeing any of these, don't wait for your next scheduled interval. Bring it in and we'll assess the filter's condition.
Certified Technicians. Emergency Vehicle Experience.
DPF cleaning is only as good as the technicians performing it. Our service team holds EVT and ASE certifications and works exclusively on emergency vehicles. We understand how fire apparatus and ambulances are built, how they're operated, and what clean, properly functioning emissions equipment means to the crews who depend on them.
When you bring your apparatus to Allegiance Fire & Rescue, you're not handing it off to a general diesel shop. You're working with a team that specializes in emergency vehicles and treats every piece of apparatus with the same urgency you do.

MissionReady Maintenance
MissionReady brings full-service fire apparatus maintenance directly to your firehouse, covering pump testing, aerial inspections, chassis service, and more so your fleet stays compliant, mission-ready, and out of the shop. Enrolled departments get discounted rates, priority scheduling, and hands-off PM tracking that keeps every unit on cycle without the paperwork.
Enroll Your Fleet Today
Enroll your fleet today and get 15% off your first service on every truck.


Find Your Nearest Location
Allegiance Fire & Rescue - Boston North
109 Lindberg Ave, Methuen, MA 01844
(978) 686-1800
Allegiance Fire & Rescue - Foxboro
2181 Providence Hwy. Walpole, MA 02081
(800) 225-4808
Allegiance Fire & Rescue - Fort Kent
130 Market Street, Fort Kent, ME 04743
(207) 834-6186
