Best AC Unit For 28' Enclosed Trailer And How Do I Get Power To It?

Updated 08/07/2026 | Published 08/04/2026

Question:

I want to add an a/c unit to a 2021 28 foot enclosed trailer. What do u recommend and how do I run the power to it

asked by: Joshua D

Expert Reply:

Hey Joshua, thanks for reaching out. What I recommend for you is the Furrion Chill HE RV Air Conditioner System # FR95TD. This is a complete AC system so everything you need to add an AC unit and wall thermostat to your enclosed trailer. This AC unit is also approved for use on an enclosed trailer. Just keep in mind will only fit roofs 3-1/2" to 6" thick so you will need to build out the roof of your trailer to meet this specification. Also make sure the roof is strong enough to support an AC unit weighing about 100 lbs total.

As far as getting power to it, I'd start by installing a 30-amp RV power inlet on the outside of the trailer. From there, run 10/2 with ground to a 30-amp breaker panel inside the trailer. Then run a dedicated 20-amp breaker and 12/2 with ground from the panel directly to the A/C unit. Most 13.5K and 15K RV air conditioners are designed to run on a dedicated 120V, 20-amp circuit.

If you also want lights and receptacles inside the trailer, feed those from additional breakers in the same panel. That gives you a complete 120V electrical system that works exactly like an RV when you plug into shore power or a generator.

How will you be using the enclosed trailer?

expert reply by: Jesse M