Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Thread Tools Display Modes
Old 10-08-2019, 01:47 PM   #1
Junior Member
Brand: Thor Motor Coach
Model: Citation 24ST
State: Pennsylvania
Posts: 9
THOR #14979
Winterizing a 2017 Citation

Hello All,

I realize there have been many post about winterizing. However, I cannot seem to find one specific to winterizing a Citation/Siesta. We have a 2017 Citation with a Girard tankless water heater.

The previous owner bypassed the water heater and the copper tubing split. I do not plan to bypass the water heater, but I am curious how to get the anti-freeze into/through the system efficiently.

Your help and feedback is appreciated...

Citation Chap is offline   Reply With Quote
Old 10-16-2019, 01:19 AM   #2
Brand: Still Looking
Model: Newmar Ventana LE
State: Tennessee
Posts: 76
THOR #16834
I have a 2017 Citation, but not the tankless WH. Mine has a drain plug, that I open and drain out the water. Manual says that should be sufficient. I don't like getting RV antifreeze in the WH. I use an air compressor attached to the "winterize" fitting in the left rear water bay and blow out all the lines (all sink faucets, etc open). I put a gallon of RV antifreeze in the toilet and flush leaving a little in the bowl. I pour some in each of the sink & shower drains and make sure I get plenty into the grey tank.

I pull the chassis battery disconnect (by the accelerator pedal). I take a picture of the 2 house batteries under the step, then remove them and take them home to keep the warm and charged. (I park my MH 2.5 miles away.)

That's it. We get some January & February temps down into the teens. I haven't had any problems in 3 years.

Formerly 2017 Citation Sprinter
2019 Newmar Ventana LE 3412
2014 Honda CR-V
Mr.Goodbar is offline   Reply With Quote
Old 10-16-2019, 01:42 PM   #3
Junior Member
Brand: Thor Motor Coach
Model: Citation 24SS
State: Arkansas
Posts: 3
THOR #16991
Winterizing 24SS 2017

I had seen all sorts of threads like you.
1. I bought a garden hose to air hose connector on amazon.
2. In Water Tank Compartment open drain valve at bottom of tank to drain the holding tank, with tank dry I do not put anti-freeze in it (right or wrong, it's not that cold in Arkansas inside my shop)
3. I connect the new connector to the water inlet and set the switch to 'Normal'
4. Open the Kitchen Sink Cold water (furthest away from supply) and drain till air comes through.
5. Open the Kitchen Sink Hot Water, drain till air comes through.
6. Open Bathroom Sink (cold then hot)
7. Open Bathroom Shower (Cold then hot)
8. Open Outside Shower (cold then hot)
9. To put Anti-Freeze in I have a short piece of tubing I slide over the connector and put the other end in Anti-Freeze bottle.
10. I go to the Kitchen Sink and Open cold and use shopvac to pull the anti-freeze into the lines and repeat for all sinks and shower.

This usually takes me about 15-20 minutes, I know some people like to disconnect the batteries but I like to periodically discharge them by leaving something on then letting the inverter charge them again, I leave a 20amp connection for fridge all winter. We use throughout the winter though to go watch our son play basketball in college so we forgo the anti-freeze now and just blow out the lines, takes only a few minutes and don't have to drain the anti-freeze each time.

Good Luck, hope you enjoy your rig.
bjones62 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.

All times are GMT. The time now is 08:09 PM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2