What are the opening hours?

Monday 7am - 4pm Tuesday 7am - 5pm Wednesday 7am - 4pm Thursday 7am - 4pm Friday 7am - 4pm

Rennert's Fire Equipment Service, Inc.

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Markesan, WI
Rennert's Fire Equipment Service, Inc.

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Fire and EMS Apparatus Maintenance and Repair Facility. Rennert's specializes in all Fire Apparatus Repair, Refurbishment, Maintenance, and NFPA Testing.

Rennert's Fire Equipment Service Inc. is Wisconsin's premier Fire and EMS apparatus maintenance, testing, repair, and refurbishment facility. Rennert's Fire Equipment Service can perform this work on any Make/Model. In business for over 50 years, Rennert's has the knowledge and certifications to get you back in service. Located in Markesan, WI. Rennert's employ's 10 full time and 1 part time employees. Rennert's can provide on-site service, as well as in shop service. On-site service can be scheduled in Wisconsin and surrounding states. EVT Certified Technician's
OEM Certified
Hale, Waterous, Darley Certified and many other's. Service
Pump Testing
Aerial Testing
Dot Inspection
Refurbishment
Lighting
Crash work
Skid Unit's
Fabrication
Part's sales
Pump sales

Service is in our name! Owner Manuel Ortiz

10/30/2026

Beautiful Friday morning!

On-site City of Wausau Fire Department for NFPA Annual Pump Testing.

10/29/2026

On-site Port Washington Fire Department for annual Maintenance and Pump Testing.

10/28/2026

🇺🇸 HAPPY FIRST RESPONDER DAY! 🚒🚑

Today, Rennert’s Fire Equipment Service Inc. honors the brave men and women who run toward danger when others run to safety.

To our firefighters, EMTs, paramedics, police officers, and all first responders — thank you for your courage, sacrifice, and unwavering commitment to protecting our communities.

We’re proud to support those who answer the call, keeping emergency vehicles ready when every second counts.

Thank you for your service. We’ve got your back! 🇺🇸

🚒 Fire Truck Repair and Refurbishment
🚑 Ambulance Repair and Remount
🔧 Parts Sales
💧 Fire Pump Testing and Service

📍 Serving Wisconsin and surrounding states
📞 920-398-1033

10/27/2026

On-site Marinette Fire Department for NFPA annual Inspections, Maintenance, and Pump Testing.

In house Arlington Fire Department
-Multiple Repairs

Lodi Fire Department
-Multiple Repairs

Cleveland Fire Department
-Refurbishment

VanDyne Fire Department
-Maintenance and Pump Testing

Rennert's Fire Equipment Service, Inc. Wisconsin's Premier Fire Apparatus Repair Facility.

Contact us today 920-398-1033 or [email protected]

10/23/2026

Its been another great week doing what we do best!

Apparatus Repair all day everyday!

Need service today? Contact the experts!

920-398-1033 or [email protected]

10/23/2026

EVT Austin Davis and Steven Williams on-site Oak Creek Fire Department on this beautiful Friday morning.

***Hoping to beat the World Series Traffic and get Home***

GO Brewers!

Thanks Boys!

10/22/2026

On-Site Lawrence Fire Department performing Carwell Rust Inhibitor Applications.

Tired of premature rust and corrosion on your Apparatus? Contact us today, on-site application available.

920-398-1033 or [email protected]

10/21/2026

EVT Austin Davis and Kyle Henning On-site Portage Fire Department for NFPA annual Pump Testing.

Still need 2026 Pump Testing completed? Multiple PT Trailer's give us the flexibility to get that done yet this year!

[email protected] or 920-398-1033

10/20/2026

Busy Tuesday

On-site Sheboygan Alliant Energy
On-site Town of Delavan Fire Department
On-site Menomonee Falls Fire Department

In-house Briggsville Volunteer Fire Company for a Pump Repack, and Transmission Overhaul.

In-house Cuba City Fire Department for a Harrison Generator Replacement.

In-house Harrison Fire Department for Emissions and Turbo Repair.

In-house Kohlsville Fire Department Ambulance Electrical Diagnostics and Repair.

Contact us today for assistance with keeping your fleet in service!

920-398-1033 or [email protected]

10/19/2026

Get on the schedule for 2027!

920-398-1033 or [email protected]

Fire and EMS Apparatus Maintenance and Repair Facility. Rennert's specializes in all Fire Apparatus Repair, Refurbishment, Maintenance, and NFPA Testing.

Address

615 E John Street
Markesan, WI
53946

Opening Hours

Monday	7am - 4pm
Tuesday	7am - 5pm
Wednesday	7am - 4pm
Thursday	7am - 4pm
Friday	7am - 4pm

Telephone

+19203981033

Website

http://www.rennerts.com/

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