RV Air Conditioner and Return Vent
In another article, I wrote about the rv air conditioner and how you could locate it on the external part of the RV. I also had an article with a picture of the roof with the air conditioner clearly showing.
In this article, you can see the INSIDE of the RV, looking up at the ceiling, where the rv air conditioner is located along with its return vent.
On almost every RV with an air conditioner, you’ll see a very large rectangular GRID on the roof of your RV. On every one of these, the air conditioner return vent is located there. Why? Well for one reason, it is the direct input to the air conditioner and the return vents are located so that the conditioners can get air. You can’t very well get outside air since the air conditioner has to suck in and cool the air and the outside air would be too hot. The idea would be that you cool air that is already cooler so your air conditioner doesn’t have to work so hard. Since the air conditioner blows air, it stands to reason that it has to suck in air from somewhere so that it has air to cool and blow out. So that is why you need a air return vent.
Some RV air conditioners will also just blow their chilled or cooled air out from a vent right next to the air return vent. The advantage to this is that is is cheap and simple – the RV manufacturer doesn’t have to put in an ductwork. Another advantage is that the air conditioner has to work less since it doesn’t have to push air into ductwork. The disadvantage is that the cool air is located mostly in one spot.
Our Open Range 399BHS has ductwork. Honestly, I would recommend against an RV with ductwork and encourage you to get one that has a straight dump out. In our Open Range, the ducts are very small and I think make it very difficult to route the air efficiently. With two $20 fans from Walmart you could just as effectively get the cool air where you want it – with the added advantage that air would always be moving on those warm days.
I thought I would list just a small handful of RV air conditioners from Amazon (disclosure) for your convenience.
- Brisk Air Dometic Duo Therm RV Air Conditioner Shroud (New Style)
- Dometic A/C Brisk Air Roof Top Air Conditioner 13,500 BTU Upper Unit Polar White 457915.XX1C0
- Dometic Brisk Air 457915 13,500 BTU Upper Unit Polar White RV Rooftop A/C Unit
- Dometic A/C Penguin II 13,500 BTU Roof Top Air Conditioner Upper Unit White 640315CXX1C0
- RV Motorhome Solar Battery 12-Volt Evaporative Swamp Air Conditioning Cooler
CURRENT eBay listings for RV Air Conditioner items:
- Dometic 3313199.014 Replacement Air Conditioner Module Board – New RV Part
- Dometic Duo-Therm 3100248.321 Run Capacitor 20+10 mfd RV Camper Air Conditioner
- Dometic Duo-Therm 3311541.000 Run Capacitor 60+10 mfd RV Camper Air Conditioner
- Dometic Duo-Therm 3100248.701 Run Capacitor 45+10 mfd RV Camper Air Conditioner
- 5 NEW BLACK RV POP UP CAMPER EXTERIOR AIR CONDITIONER POWER CORDS ABOUT 14' LONG
- Hard Start Capacitor Compressor Boost Dometic DuoTherm Air Conditioner RV Camper
- Coleman 1499-5671 1499-567 Run Capacitor 30 mfd Camper RV Air Conditioner
- Dometic Duo therm RV Air Conditioner Control IR0101
- Dometic Duo-Therm 3313182.000 Run Capacitor 45+10 mfd RV Camper Air Conditioner
- Coleman 1499-5721 1499-572 Run Capacitor 40 mfd Camper RV Air Conditioner
- Coleman 1499-5731 1499-573 Run Capacitor 45 mfd Camper RV Air Conditioner
- Dometic Duo-Therm 3100248.362 Run Capacitor 35+5 mfd RV Camper Air Conditioner
- Dometic Duo-Therm 3100248.339 Run Capacitor 25+5 uF Camper RV Air Conditioner
- Dometic Duo-Therm 3310711.001 Run Capacitor 45+5 mfd RV Camper Air Conditioner
- Coleman 1497-1081 Start Capacitor 108-130 mfd Camper RV Air Conditioner