I love my 2021 3100. My chief complaint is the loud noise of the roof air systems. I would highly recommend that PC look into ways or systems to reduce this noise. Different types of units? Ducted systems?Curious to know thoughts of others on this. Thanks and happy travels.
Hello PhilDon't let Donc13 scare you off, the price of the Houghton A/C's has dropped and became available through RecPro.com as Jim Godfrey pointed out in a post previous to this one (Any issue running Houghton AC while driving?). The install is very easy, actually the mounting of the Houghton A/C's in my opinion is much more robust and offers a better seal to the roof than the Dometic units. Donc13 mentions that the thermostat for the heater needs to be rewired that is correct, but it is a very easy process if you just replace the Dometic thermostat with a standard mechanical one. The Houghton A/C units are self contained and don't require a external thermostat to operate and also come with a remote control. My PC has 2 of them one was installed by Advanced RV and the other by me. Advanced RV had installed a control box that allowed the heater to use the original Dometic thermostat to operate just the heater. I removed this control box because Advanced RV installed it inside of the Houghton A/C blocking the air flow from the forward vents. So I just installed a mechanical thermostat for the heater for $15 and it works excellent plus it makes troubleshooting very simple for the heater. I used a drywall lift to get my A/C up to the roof, and installed it in the vent opening just forward of the bathroom. The first Houghton A/C is installed where the original Dometic was. I just looked at the price for the Houghton 13.5K heat pump A/C from RecPro and they are selling it for $1449.95. or the straight cool for $1049.95. These A/C's are quiet, nothing like the loud wind tunnel of the Dometic units. Plus these A/C's will fit the same opening with no modification as the Dometic unit. FYI my Houghton A/C's are straight cool and cost $2500 without installation when they were purchased. So Donc13's $4000.00 price would be correct if you let Advanced RV do your install. I however would say that the hardest part is just getting the A/C on the roof, Houghton has made these A/C's extremely easy to install and if you have the ability to get the old one down and new one up on your roof your good to go. Here are a couple pictures of my A/C's on the roof and how the second A/C operates as I don't have a 50amp service. If you have any questions or want some more pictures feel free to just ask. I believe that the upgrade to these Houghton A/C's is well worth the time and money. Very RespectfullyLance