Vibe 33rk is too hot inside

[Injun]

2019 vibe 33rk. 106 degrees outside and 91 inside. 50 Amp. Bedroom ac barely blowing I think freezing up. Main ac can't cool it off. Main on hi cool and 65 degrees. Runs constantly. No window tinting. Recharge ac's? Ceramic tint all windows? Way too hot indoors. Help!!!

[NMWildcat]

The a/c will usually only cool the inside air down 20° from outside temp. To help when temps are over 100° we cover windows, use the awning when it provides shade to the RV, and try to park where you get a little shade in the evening. Then if we need to stay inside we sit directly under a vent. When it gets over 115° in AZ, we will usually opt for a motel room
If your A/C is freezing up, try running it in a dump mode instead of through the central vent system.
Lots of articles that detail how to get the most from your RV A/C and prevent freeze up.

[jeff64]

Usually 23* difference between inlet air temp and outlet temp is about normal. Put foam blocks in skylights and vent boxes. Run circulating fans to move the air around. Get a compressor type dehumidifier, the Ivation 14.7 works very well for us. Low Amp draw, compact package. In addition to previous comments

[NMWildcat]

Just to share a 'trick' we use. When traveling in temps over 100° frequently the temp inside the RV is 120°+ when we open it up. At that temp our thermostat gives an out of range error and will not turn on the A/C. So we spray it with compressed air (in a can) to cool it off until the A/C kicks on. Fun facts in the desert
Also, never turn off your A/C when you leave your RV for a day trip as you will then have to start all over. Usually takes about 24 hours to where it might start turning off at night

[Injun]

The one that I think is freezing up is a unit only. No piping through the camper. Heat of the day, barely blows. Turn it off for an hour, blows better but not great.

[NMWildcat]

Originally Posted by Injun

The one that I think is freezing up is a unit only. No piping through the camper. Heat of the day, barely blows. Turn it off for an hour, blows better but not great.

Sometimes, turning the fan to low/high instead of auto helps keep it from freezing up. Otherwise, you just have to turn it off when stops blowing cool air to let it defrost.

[Injun]

Ours runs continuously. Never turns off even at night.

[NMWildcat]

Originally Posted by Injun

Ours runs continuously. Never turns off even at night.

Been there done that in Phoenix and Scottsdale AZ mainly. RVs just aren't made for really hot places Where are you at?

[Injun]

West texas. We are going to tint windows and uv heat coat top and tops of slide outs. Gotta be better than what we got.

[DouglasReid]

Originally Posted by Injun

West texas. We are going to tint windows and uv heat coat top and tops of slide outs. Gotta be better than what we got.

We got a roll of that Mylar bubble reflective insulation. I cut it to a close tight fit the inside of the window frames so that it stays put in the frames when we install it, even when we drive over some bumpy roads it stays put. We use it on ALL the windows when it is really hot and humid (Typical Louisiana summers)

It works very well, though it does tend to make the inside of the camper dark, but that just gives the feel of it being cooler than it really is.

Since you are experiencing low air flow I suggest cleaning the evaporator coil on your AC unit. (several good You Tube vids to teach you how, it is quite easy) A clogged coil will freeze up because it cannot get the airflow it needs to operate properly.

You can try upgrading your 13,500 BTU ACs for 15,000 units but that will not really gain you much for the money. The 11% may make a slight difference but at a huge cost in equipment. That said, if one of ours goes out and I have to replace it, I will do so with a 15000 BTU unit, most likely the Furrion brand.

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[MCTroy]

Originally Posted by jeff64

Usually 23* difference between inlet air temp and outlet temp is about normal. Put foam blocks in skylights and vent boxes. Run circulating fans to move the air around. Get a compressor type dehumidifier, the Ivation 14.7 works very well for us. Low Amp draw, compact package. In addition to previous comments

2x especially on keeping the fan on.

[tomkatb]

Set fans to high.

Let it run a while.

Stick a meat thermometer in the nearest outlet. Should read 20+ degrees colder than the unit. Units are not really able to add Freon. Labor rates too high usually. Replacement up units are not terribly expensive.

First step is to clean the outside core of each unit. Dirt affects them.

I can tell you two ac units will not cool a 37’ fifth wheel much below 80 degrees in 106 degrees. Maybe after 24 hours. Maybe not.

When setting up we use the exhaust fans to get temps into a cooler range.

[Reverse_snowbird]

You mentioned that the fan runs all the time. I think you have the type of air conditioner where the fan will run all the time for air circulation. The compressor will cycle on and off, but the fan stays on. Those a/c's cannot be recharged, only replaced. Make certain you've cleaned the filters (usually foam at the bottom of the cover) and checked for anything interior blocking the vents.
Reflectix foil bubble insulation can help with window insulation. It's easy to cut and install and remove when things cool down. A separate fan inside the rig will help make it 'feel' cooler (but not much, unfortunately)

It really sounds like something is wrong with that second a/c and you may need to replace it or call someone to check it out. Unfortunately, you're camped in dry west Texas and air conditioners don't work as well out there. They work by taking humidity out of the air and it's dry out there. There's a reason why people in Arizona use swamp coolers that put humidity back into the air.

[NMWildcat]

Originally Posted by Reverse_snowbird

.....There's a reason why people in Arizona use swamp coolers that put humidity back into the air.

There are very few folks in the desert SW that still run swamp coolers. They really don't work in temps over 100°. Kinda like A/Cs in RVs, they only cool the air down to a certain point from ambient.

[Injun]

We have decided to go with nano ceramic tinting. 98% heat blockage. Expensive but this is step one.

[tomkatb]

Read post 12

If the units are not 20 degrees or more then the unit must be serviced or replaced. You should have two 15,000 btu units.

Tinting is costly. Very little value. A new ac unit costs less likely.

My unit is 37' long and has bigger and more windows.

Summer in Houston often. The grand babys are there.

[Volvodriver]

Don't own a Vibe but live full time in a 42 foot Sandpiper. As I type this it is 99 degrees and feels like 106 in rv park 50 mile east of Austin. We have reflectix on two windows that draw heat but also have shades and heavy drapes on all windows. We run the upstairs ac on 78 and the main ac on 82. We have a small fan that we set in the bedroom doorway floor and its pointed to the thermostat on the wall on the stairs. When the upstairs kicks on it blows across the thermostat and fools it so it at this moment saying its 83 in main and cutting off and on staying 78 upstairs. Today the main has run steady sense 11:30 and upper kicks on and off. About 7:00 or so the main starts to kick off and on and when go up to bed we take the small fan and put it on the dresser and set the bedroom ac to 76. Good for the night. It kicks on and off . Main stops running completely over night. Full disclosure, ceiling fan in main area runs 24/7.

So I also agree that 12-15-18 degree difference is about what you can achieve.

[dcheatwood]

Shade is number helper for cooling down. If you can park under trees it'll make a big difference.
The air coming out your vents should be about 20° cooler than the air going into your intake. So, as the rv cools dows inside, the vent air will get cooler and cooler when ACs are working correctly.
On one occasion I had to go outside and water down the sunny side with running water to cool down roof and side walls. Took a couple hours to get comfortable.

[Oaklevel]

When we are in Myrtle Beach in the summer and over 90 degrees the AC compressor rarely or never turns off. As others have said it takes a long time to cool down and keeping the doors closed and shade helps ......

As mother used to say stay inside or outside keep the doors closed.....