Recommended AC Replacement for a Dometic Blizzard on a 2018 Keystone Montana High Country

Question

Question:

Any compatible replacement for Dometic A/C H551916AXX1J0 2018 Keystone Montana High Country 362RD?

asked by: Lili K

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Expert Reply:

I did some research and it doesn't look like there are any direct plug in replacement to replace your Dometic Blizzard AC, so you'd have to replace everything.

A great replacement is Advent Air RV Air Conditioner System # ACM150CH. This AC is compatible with ducted and ductless systems, has a 15K BTU cooling capacity, and also includes the wiring harness and mounting hardware.

expert reply by: Bryce D

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Answer 1

Correct, the Advent Air RV Air Conditioner System #ACM150CH is a brand new install, so it won't use any of the original stuff. There is a built in thermostat, but there is not a remote so if you needed to change the temperature you'd need to…

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Answer 2

Yes, the Advent Air RV Air Conditioner #ACM135 will replace your current Dometic Duo Therm Quick Cool. This unit is designed to replace an existing Advent Air, Dometic, Coleman Mach, or Carrier air distribution box and thermostat.

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Answer 3

I checked with our manufacturers and there is not a direct plug-in replacement for your Dometic Blizzard 15,000 Btu air conditioner, so what that means is to replace your Blizzard you will need a new unit and wire it in. For a great option that will…

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Answer 4

If you're not getting any heat from your Advent Air RV Air Conditioner #ACM150CH, I suggest loosening the screws on the side to access the components of the unit. Then, turn the heat setting on and see if the heat strip is getting hot. I…

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Answer 5

I did some research and it doesn't look like there are any direct plug in replacement to replace your Dometic Blizzard AC, so you'd have to replace everything. A great replacement is Advent Air RV Air Conditioner System #ACM150CH. This AC is…

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Answer 6

In order to determine the correct roof vent, measure where the vent opens. The standard trailer roof vent opening is roughly 14-1/4" x 14-1/4" and have roof vents that measure 14" x 14". To pick the correct cover, you will also…

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Answer 7

Hey William, so the Advent Air AC unit part #ADV64FR would be a solid 15k BTU rated replaced for your setup. It is designed for ducted applications like you'd need as well. This also will wire right up to Advent and Dometic setups but if you have…

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Answer 8

Actually the type of roof vent cover you need to attach to the vent cover brackets of your Maxxair 4951KS like part #MA00-04500K is the part #MA00-955003 which uses those brackets with the included cotter pins of the cover.

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Answer 9

Yes you are correct the Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid #MA00-04751KSX is the right replacement and measures 18 1/8" long and 16 1/2" wide, which is the same measurements as your current MaxxFan Plus Roof Vent w/…

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Answer 10

Thanks for the pictures of your roof vent lid Marty! Based on that the correct replacement is the Ventline part #BVD0449-A01 that you referenced if you wanted white or the part #BVD0449-A03 for the same smoke color you have now.

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Answer 11

The Advent Air RV Air Conditioner System #ADV64FR is a complete system and would replace all of your Dometic equipment so you wouldn't have any compatibility issues with this unit. Increasing the BTU rating from 13,500 to 15,000 will give you a…

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Answer 12

To add a in-bed 7-way to your 2024 Chevy Silverado 2500 to make towing with a 5th wheel easier, I recommend adding the Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 7' Long item #C58FV. This harness puts a 4-way and 7-way…

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