Dual capacitors have a lifespan of heating 10 to 10 years. This is also why 3kV film capacitors are worth the investment. 3kV film capacitors can have a lifespan of heating 10 to 10 years, while itors have a life of 5 to 10 years.
The price of a film capacitor depends on whether it is for a cooler cap or humidity. However, a cooling cap is more expensive than a 3kV film capacitor.