Originally Posted by episodic
How long does a 7lb propane tank last if you run the heater on 60-65 at night and cook a little? Just averages is what I'm looking for.
I know this is idiotic, but I've never even had a propane grill. When you bring a tank to someone do 'they' fill it?
First off congratulations, and welcome to the forums. There are many members here, who will always try to help. It may seem overwhelming at first, but you will learn and adapt. We were all in your situation at one time, so remember that you are not alone.
I'm just going to attempt to answer the propane question. The 7 pound comment was throwing me just a little, but I think I understand what is being confused. I looked up your Rockwood trailer model on the company website and it says it comes with two of the 30 pound propane cylinders.
Propane can be considered either by gallons or the weight of the propane. Propane usually weighs about 4.24 pounds per gallon at 60 degrees temp.
These common propane cylinders that you see in the exchange cages (they only EXCHANGE cylinders and do not refill them) in front of hardware stores, many drugstores, and a lot of convenience stores nowadays are what are called 20 pound tanks . They hold 4.7 gallons of propane, which equates to right at 20 pounds of propane.....not counting the empty (tare weight) of the cylinder itself.
Your cylinders on your RV are going to be the 30 pound variety, which equates to about 7.1 gallons of propane. This may be where you are getting the 7 from and are confusing pounds for gallons. Also, being you have 30 pound cylinders, you are not going to be able to do an exchange at most places, and will need to get them refilled.
The reason I am over explaining this, is when you go to check or even refill your cylinders, you need to understand this a little cause it will matter down the road.
You need to figure out where and who in your area will refill the cylinders. Being you have 30 pound cylinders, you can't just pop in on a Sunday and exchange the cylinders at the aforementioned places above. Yours are not the common 20 pound cylinders (like for BBQ grills).... so you may need to plan ahead a little.
Many RV'ers will not use the automatic cylinder changeover/regulator on their RV and always keep one full cylinder turned off (or closed). This way, if they do run out of propane in one cylinder, they have a full cylinder awaiting them, and know about how much time they have left to go get them refilled. They just open up the full cylinder and manually changeover to that cylinder. Running out of propane during a cold night or on a weekend, with no way of getting it refilled is not a fun proposition. You can also just remove the empty cylinder to get refilled, if you have the selector pointed to the full tank. This youtube video explains it in better detail:
Also by knowing weights, you can actually use bathroom or handheld luggage scales to measure how much propane you have in your cylinders. This is better explained in this post/thread. There is a lot more information in the whole thread, if you want to read the whole thing.
As far as how long the cylinders will last, is dependent on so many factors. Are you using your furnace (huge propane user), the outside temps, how much cooking on the stove and/or oven, are you using the water heater on propane (which actually uses very little propane, but it does use it)? I don't fulltime, so my answers wouldn't help there. Maybe someone who does, will come along and give you some estimates.
Also speaking of the water heater, do you know if you have the Atwood or Suburban brand water heater. If you have the Suburban, then this FAQ may be worth your time to read over, so you fully understand it's operation and don't make the common mistake of damaging your electric heating element.
Suburban's electric switch and much more
Like I stated, you are going to do just fine, You've already found the best place to get all of your questions answered, and have the best support group of anywhere.
Also, when I looked up your RV, your floor plan is identical to mine, except for the bathroom, as you can see in my sigline.