I have a Rigmaster and had a Carrier roof top A/C that I just took off. I couldn't stop it from leaking and they just don't put out enough air. The roof really isn't strong enough to support it. It bounces the roof up and down. I ended up putting a 15,000 btu house A/C in and it really throws out the air. That's the way to go.
I didn't have my pony pack long enough to really test it out. The one day I had it that it hit 97 in ABQ I stayed nice and comfy. Truck was a W900L with the 86" sleeper. If I remember right the fan was only about 50%. I too like it nice and cold when its hot.
WOW 15,000 btu can cool a house LOL How much does that weigh? I think a trip to home depot or lowes is in order tomorrow for me to do some research.
15,000 isn't that much. Many cars and SUV's have 35,000. The Comfort Master APU is 33,000 btu. My Rigmaster has 15,000 btu and will run that also when the temp gets up there. I can close the cab curtains but I like to use a curtain around the windows instead for the extra room. That's where a lot of the heat comes from.
My friend ran a window a/c unit in the back of his sleeper wall in place of a window. He had to replace them every 6 months on average due to the fragile nature of the tubing that would crack due to vibrations. He finally surrendered and installed a Carrier roof top unit. No problems to date. I have a Coleman Polar Cub 9500 BTU roof unit that puked after 6 months due to improper assembly at the factory according to a local RV unit specialist. Coleman won't warranty it because it is installed on a Class 8 truck. They should say that before selling it for installation on one. Anyway, I'm replacing it tomorrow with a Coleman Roughneck 13500 BTU which is what I should have bought to begin with because it is built for this type of use. I didn't know about it before. The 9500 was plenty big enough so the 13500 should be overkill. My Honda EU3000IS quiet generator works like a charm with little vibration and weighs only 114 pounds I think. I Have it set up for shore power and my next move is to install a battery charger to keep my batteries topped off.
Over the last weekend my buddy and I cut a Idle-Aire window template to fit a 5000 btu window a/c. It worked perfect. 5000 btu is plenty good if it's in the window. Those units are about $100 bucks and small. Usually they're small enough for under the bunk. For 100 bucks you can't go wrong. Toss and replace when it wears out. The Idle-Aire template works really slick as it already locks into the window -just use tape if you need to around the edges if it's really hot out or you have skeeters/flies coming in. I have a Pro-Heat apu. The a/c unit they supply with that unit is a total POS and waste of money and space. Mine never worked well if it worked at all. I am going to try to rid myself of that and get my under bunk space back and store the $100 a/c unit there. My generator unit on the apu is also shot. I am thinking of using the kubota to run 2 160 amp alternators into a 3Kw inverter since alternators are about $150 each on sale. Carrier wants about $2000 to replace the generator and most say they won't try to rebuild them. I might take the unit to an electric motor rebuilder and get an idea. I want to stick with a diesel setup. The kubota motor is in very good shape still.
This is the way to go. I made a mistake above. This unit is 18,100 btu, not 15,000. I had a Carrier roof top unit and they just don't put out the air flow. This thing will blow your head off. I've done all the experimenting and there is no better solution then this.
If you insulate the cooler with some styrofoam it won't use as much ice.... I want to get one since I'm cheap and can't see paying $7-8K for a genset. My son uses a Honda generator ( in a frame mounted box) and a home a/c unit that is mounted under his bunk and ducted into the sleeper...