What is Start Up and Running Amps of Advent Air AC Unit

Updated 01/19/2026 | Published 08/10/2024

Products Featured in This Question

Start Capacitor for Advent Air RV Air Conditioners

(338)

$18.85

Firman 3,300-Watt Portable RV Dual Fuel Inverter Generator - Propane or Gas - Electric Start

(5)

$1159.99

Question:

What is the total start up amps on the Advent ACM135 and then the running amps ? What size generator will I need?

asked by: Albert T

Expert Reply:

Hey Albert, the Advent Air AC Unit part # ACM135 has a start up amperage draw of 45 amps and a run amp rating of 15 amps. When using a start capacitor like the part # ACMSCKIT though the start up amps drop to 15 amps.

For a generator that would work great with this we have the Firman 3,300 watt generator part # FIR54FR.

expert reply by: Jameson C

Jameson C.

1/19/2026

Hey Albert, how did things work out with the Advent AC and the Firman 3,300-watt generator? Did the start capacitor help lower the startup amps as expected? Your update could make it easier for the next person setting up a similar system.