2014 Big Country AC Different than Whisper Quiet AC

[Theresau]

Our 2014 BC has the integrated ducting between the living and bedroom AC's. We've studied the Heating and Cooling manual and it references this method but calls it the Whisper Quiet system. I believe Landmarks have this.

Our bedroom AC is 13,500 but is full profile and again it is fully ducted.

We are having problems with the rear air not cooling and very easily freezing up. When at the rally, HL worked on it some because even when on low it would turn off - then go to high and then turn off again. They also replaced the living room thermostat.

After the rally we kept checking it at home and then began to wonder if maybe the living AC just wasn't getting enough amps (we knew enough not to run both AC's at the same time). Maybe that was even occurring at the rally as the electric was shared. However, we are at Traverse Bay RV resort and there's no sharing we should be getting good amps now.

Living AC is just not cold - bedroom is very cold. We're now concerned that it has something to do with the ducting? Could it be that the bedroom AC is affecting the living AC? (We even wondered if the two units got mixed up but the serial #'s indicate that the living is 15,000 and the bedroom is 13,500.)

Also, the Whisper Quiet system has a 15,000 bedroom AC per the heating and cooling guide - should ours have been such too - again, it's full profile? With this shared ducting does the bedroom have to be equal to the living?

We've put in a call to Dometic. Just wondered if anyone else is having this issue and if anyone has any thoughts on the matter.

When did they begin integrating the bedroom and living in the BH's and BC's? Do those that have 2013 models have this integration?

 

[danemayer]

Hi Joe and Theresa,

On the BC, I think they call the ducted A/C by the marketing name Cir-Q-Lair, rather than Whisper Quiet. When the Landmark Whisper Quiet was launched, I think there was some mention of a redesign of the A/C units and how they're mounted, as well as a duct redesign. I don't know if the A/C units on the BC are the same, or if the duct arrangement is the same on the Cir-Q-Lair. It might be the same and they're trying out a different marketing name; or it might be different.

With both Whisper Quiet and Cir-Q-Lair, the A/C units are intended to cooperate so some of the bedroom unit cooling gets directed to the living room registers, and similarly some of the living room capacity gets to the bedroom. As the Heating and Cooling Guide mentions, you can use the thermostat settings to provide better cooling with less noise in the room being occupied.

The problem you're having sounds more like the living room unit has a problem - perhaps there's leakage of air in the return duct causing the freezing and other issues.

A non-contact infrared thermometer like this might be useful in figuring out what's happening. In hot weather, I've found that even though the living room A/C doesn't always feel like it's pushing cold air, the thermometer shows the temperature of the registers is 55 degrees which is much colder than any A/C unit in my home.

I believe most of our cooling problems are at the windows. With the direct afternoon sun on our dual pane windows, the temp at the window pane may be 120. I may still go for window awnings to cut off the direct sun. But since we're spending 2/3 of the summer in the mountains, it's not a pressing issue for us.

 

[Theresau]

I don't think it is the cir q lair system that the gateway has. Gateway has a different roof system that supports it per my reading.