need longer trips (>10 miles) for cold engine,

[Project84]

I use block heaters on my fleet of vehicles at my job... Napa tank style 15000 W heaters PUT OUT SOME HEAT in a hurry.

15000W is a bit much of a standard duty car, my application is heavy duty F700 box trucks.

Napa sells a 7500W tank style heater and for a good price. I'd install one in my car but I live in an apartment and have no way of having an electrical connection in the parking lot.