This is not something I will do on my own...I will hire a licensed contractor.Our motor home is in a shed about 60 feet from our house/500 gallon LP tank. We don't use this tank as it only hooks up to our pool heater.Motor home has a 24 gallon tank.In the event of a serious, long term, hacked power grid outage, we would like to move into the m/h. 24 gallon tank won't last but a month or so in the winter. I will assume no electricity means no propane refill at a gas station or elsewhere.We have a gasoline generator and 2000w inverter/charger. I would like to a)...buy two $500.00 LP tanks, hook together outside the RV shed and pipe inside. Or b)...hook into our 500 gallon tank, trench over to the RV shed and pipe inside.As I understand, it is not possible to fill our 24 gallon tank from our 500 gallon tank...and so it will be hooked up some way directly into the RV stove, furnace lines.Sound reasonable...any better ideas ?

Google "Extend-A-Stay." You permanently install it between the propane tank and the regulator. It allows you to hook an external tank straight to your existing LP system.

Your propane supply company should be able to do the work for you. I would connect to the 500 gal tank unless the length of the hose offsets the cost of the tanks you are talking about purchasing.

If your 500 has a liquid out connection you most certainly can fill the RV tank.Otherwise yes you can run propane into the shed and connect to the RV. Probably need a regulator outside so you only have low pressure in the building. Your contractor should know the local rules. By all means get a city permit and inspection.

If it’s only for a ‘what if’ type situation put the ‘Extenda-Stay’ on the M/H and a quick disconnect on the tank then buy a line long enough to reach that will just lay on the ground if & when needed. Be aware though the 60’ you mention is likely moot since you can’t run things like your furnace inside an enclosed building unless you leave all the doors wide open.

JaxDad wrote:you can’t run things like your furnace inside an enclosed building unless you leave all the doors wide open.Excellent point, that I had completely missed. Carbon Monoxide poisoning is NOT your friend.

Best approach for more LP into our RV...? | Good Sam Community

17 Replies

Bobbo
Explorer III
Feb 17, 2019
1. CO (not CO2) is heavier than air so vents near the roof won't help. You need vents at floor level.

2. You remove the regulator from the 24 gallon tank, attach the extend-a-stay to the tank, then attach the regulator to the extend-a-stay. Under normal conditions, you pull propane from the 24 gallon tank through the extend-a-stay to the regulator. When you attach an external tank, you pull propane from the external tank through the extend-a-stay to the regulator. The extend-a-stay is, itself, a "T" with a shut-off valve to keep propane from the 24 gallon tank from exiting the "T."
akaPedro
Explorer
Feb 17, 2019
Thanks for your replies. RV shed is metal and has many vents in the wall near the ceiling. Can always leave the 12 foot door up. I have run the furnace for a few hours, off and on, and CO2 detector did not act us. When I run the generator, I have a ABS pipe going from the exhaust to outside the shed.

I went to the Marshall extend-a-stay site but for the life of me I cannot figure out, exactly, how to get from our 500 gallon tank to inside our RV. Does it connect to our 24 gallon tank...or is there a tee or something to by-pass the tank and go directly into the coach for the stove, fridge water heater and furnace ?
Bobbo
Explorer III
Feb 16, 2019
JaxDad wrote:
you can’t run things like your furnace inside an enclosed building unless you leave all the doors wide open.

Excellent point, that I had completely missed. Carbon Monoxide poisoning is NOT your friend.
JaxDad
Explorer III
Feb 16, 2019
If it’s only for a ‘what if’ type situation put the ‘Extenda-Stay’ on the M/H and a quick disconnect on the tank then buy a line long enough to reach that will just lay on the ground if & when needed.

Be aware though the 60’ you mention is likely moot since you can’t run things like your furnace inside an enclosed building unless you leave all the doors wide open.
time2roll
Nomad
Feb 15, 2019
If your 500 has a liquid out connection you most certainly can fill the RV tank.

Otherwise yes you can run propane into the shed and connect to the RV. Probably need a regulator outside so you only have low pressure in the building. Your contractor should know the local rules. By all means get a city permit and inspection.
TenOC
Nomad
Feb 15, 2019
Your propane supply company should be able to do the work for you. I would connect to the 500 gal tank unless the length of the hose offsets the cost of the tanks you are talking about purchasing.
Bobbo
Explorer III
Feb 15, 2019
Google "Extend-A-Stay." You permanently install it between the propane tank and the regulator. It allows you to hook an external tank straight to your existing LP system.

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Best approach for more LP into our RV...?

17 Replies

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