Keeping the cool in and the heat out of the RV can be very important in the scorching summertime heat. Where I’m writing this it is 98 degrees – humid and HOT. Our inside RV thermostat reads 99 degrees, and I don’t know if it can even read triple digits! Sometimes it seems cooler outside than in the RV. Wait… sometimes it is cooler outside.
Tips to keep the cool in and the heat out
- Start the AC early in the morning. An AC unit doesn’t instantly cool down the RV. When the thermostat hits 99, it is long past time to crank it up. Check the weather and get a jump on cooling the RV. If you’re going to be away for the day, you can always set the temp a bit higher than normal to keep it reasonably cool, then lower the temp when you return to the RV.
- Close off vents in unused areas and close the doors to those areas. That keeps the cool air focused where you are. I have closed off the bedroom, open vents and run AC before going to bed.
- Park in the shade if at all possible. It can feel 20 degrees cooler in the shade. (Hint: Here’s how you can find shade at your next campsite.)
- Use your awnings. Window awnings and shade awnings all help immensely. Our ice maker in the freezer starts to melt and make one giant cylinder of ice in extreme heat and sun. Shade and awnings help.
- Pull down interior sunshades and night blinds to reduce the heat from the sun.
- Insulate the back and top of cabinets. Adding Reflectix foil insulation to cabinets can reduce heat transmission. Reflectix can be purchased by the roll. We used it on our RV windows in the cold and in extreme heat in the past. There are several varieties of foil insulation available, this is what we used. (Here’s more on how to insulate your cabinets.)
- Add more insulation. In some motorhomes, there is little to no insulation in the cab area. Some people even remove the back of their cabinets and add insulation. If doing that, be careful of the existing wiring and make sure you can easily access the wires and cables when needed.