Camping at 27 degrees.

Manuals are often generic so verify what they state and check that everything works. For 2 weeks out best to plan for lower temps. Open all cabinets and areas inside with water pipes. Doubtful that low wattage 1156 bulbs willl provide adequate heat. Consider 120V lights.

It sounds like you are doing everything right. One thing that can get you are air leaks. Go out at night and with the lights on in the basement, look for any light escaping. Get those holes blocked with rags or tape. If the air leak is close to a water line it can easily cause it to freeze.

Shannon62,

This thread has some excellent advice.

https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/24160748.cfm

Keeping your furnace at 70 will go through a lot of propane. We keep ours at 55 and use about 1/4 tank per night. As long as it heats up in the day, you won't have to worry about the pipes freezing.

Edit- i said 55 because we ran a test on how much propane would be used ifvwe ran the heater at night.

Last camping trip, it was 26 the first morning and 21 the next. We did not run the heater at night. First thing in the morning, we turned in tbe Heater Buddy. The daytime temps were 65, so we didn't have any issues.

You have nothing to worry about, looking at the Pittsburgh forecast through beginning of December. Except maybe the garden hose freezing at night, which is easy to unhook and run off your tank.
If the temp is getting well above freezing during the day and only into the mid 20s at night, unless you literally have a camper water line that is totally exposed to the atmosphere, AND the daytime temps are staying below freezing.

Think about it this way. Takes a few hours to make ice cubes in a freezer and that is around 0 deg F.

Turn off your luggage lights, they won't add enough heat to do anything.
Don't bother draining gray and black. Again, a HUGE ice cube isn't going to freeze up unless it's below freezing for days. No AF needed in the P traps either.

If you don't believe me, take a bottle of ambient temp water, the first day it is getting below 32 at night, put it on the outside step and see how frozen it isn't the next morning.

Note, what I'm saying is not applicable to just leaving the camper for days unattended and hoping it doesn't get colder than forecasted.

We camp down in the 20s all the time. The issue is how deep into the 20s and how long will it stay that way?

Dipping down that low overnight and freezing the dog's water bowl is no big deal. If it stays in the 20s all day though, then it's serious.

We just keep the living quarters warm enough to be comfortable, which keeps the underbelly warm enough to prevent freezing.

That sounds really excessive. I have camped with the daytime highs in the upper 30s and the lows about 20. I also turn the heat off at night and sleep under a couple of large blankets. I don't take any special precautions. It takes a long time to freeze tanks hard enough to do any damage. If you are worried try a half gallon of antifreeze in each tank.

Below freezing unhook water hose unless heated, fill fresh water and unhook any sewer hoses. store hose in heated storage. As long as your furnace is running and your underbelly is heated your good.....

Then theirs idiots like me that went into the mountains and used my TT as a ski hit! 0-15F night vs day at times.

Reality, do what you doing. I never turned the heater off, kept it around 70f. Then again, you do not appear to have 4 kids from 6 months-18yrs with you over the 10+ yrs I did this.
If you do this alot, find the manual drain lines in the main lines, remove them! Water will freeze up, and you will not have water beyond that point. For me it was bathroom and hot water heater at rear of trailer. The front kitchen had water.
If you have exposed gray and black tanks, the may freeze, if temps are lower than freezing for a few days. They usually have room to expand, not a big deal.
I found having door vent covers to be a good thing when it snowed. Even with 2-3' of snow on the roof, we had ventilation. With out we had none.
My 02

Marty

We have ducted heat,2 furnaces,with supposed basement heat so say's owners manual. I am going to disconnect from shore water and just use fresh tank,keep heat on 70,leave luggage lights on (1156) in wet storage,leave gray water open as always & empty black then shut and add antifreeze.Should that be good enough ?

My $0.02 is that will work, but it's WAY overkill. I'm basing my advice on what I do with our 36' Class A. You'll waste a ton of propane keeping the inside at 70*F. If you have electricity and electric heat as an option, I would use that, and only to keep it comfortable in your bedroom and bathroom overnight. During the day, you can put the furnace on to take the chill off, then use electric heaters during the day.

Disconnecting from shore water is a good idea. The fresh water tank will take A LONG time to freeze and won't do it at all at the temps you mentioned.

The 1156 luggage light bulbs do not put out enough heat to make any difference. IF you were going to be in colder temps (25*F or lower for 8 hours or more) I'd recommend a small 150W portable electric heater to put in the bay with the water pump. That'll keep things flowing down into the low 20's, and probably into the high to mid teens.

I NEVER leave my gray tank open. I think that's a bad practice as your rig now becomes a sewer vent for the campground septic/sewer system. But in cold weather, the gray water that flows into the drain hose will freeze. Plastic gets brittle as it is in cold temps, let alone having ice in it. If you go to move it with ice in it, you probably run a high risk of the hose cracking. Like someone else said, keep the drain hose in a bin, protected from the elements and ice.

I'd only dump the gray or black tanks when they need it. Let them fill until it's convenient to dump them. Convenient based upon your schedule and above freezing weather. The MORE liquid you have in the tank, the LONGER it will take to freeze the liquid in them at any given temperature.

Antifreeze won't be needed at all. UNLESS you're talking about winterizing the rig at the end of the camping trip. But I wouldn't add it in until you put the RV to bed for the winter. If you put the antifreeze in the traps before you leave, it might slosh out of the P-traps while you travel.

We've camped in our rig down into the single digits. For that, we went through about 20 lbs. of propane in less than 24 hours AND we used 3 electric heaters, 2 inside and 2 small (150W) outside (one in the bay with the water pump, one in a bay near the water tank). We were nice and cozy, the kids were comfy. The water kept flowing. But that was COLD for us, though I know there are those on here that have braved even lower temps.

Have fun & Good Luck,

~Rick