Low Profile AC Unit Recommendation for 2018 Keystone Cougar
Updated 02/03/2026 | Published 06/25/2024
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Question:
We just bought a 2018 keystone cougar and are looking to put a second air conditioning unit on the 5th wheel. Was looking for a low profile unit with possible heat pump with a wired thermostat. Do you sell any units like this?
asked by: Steven S
Expert Reply:
Hey Steven, so we have the Dometic Penguin Ii High Capacity 15k btu RV AC unit part # DMC33ZR which has a heat pump built into it like you are wanting. You will also need the air box part # DMC43ZR.
If you were looking for something a little easier on the ole wallet we have the Advent Air low profile unit part # ADV79FR as well. To add a heat strip you'd need the # ACMHD. You'll also need the Air Distribution Box w/ Built-In Thermostat for Advent Air RV Air Conditioners # ACDB.
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Jameson C.
2/3/2026
Hey Steven, how did things go with adding the second AC to your Cougar? Did the Dometic Penguin II or the Advent Air setup end up being the better fit for your needs? Your update could make it easier for the next person planning a similar upgrade.