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07-22-2021, 11:44 AM
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#1
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Member
Brand: Thor Motor Coach
Model: ACE 27.2
State: Florida
Posts: 78
THOR #11144
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A/C in hot weather
In hot weather is it better to have A/C in auto where the fan cycles on and off or better to leave the fan running for circulation? Interested in what others have experienced.
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07-22-2021, 11:56 AM
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#2
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Senior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 2,324
THOR #6903
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Auto
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07-22-2021, 11:58 AM
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#3
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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X 2!
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"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-22-2021, 12:40 PM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: Miramar 37.1
State: California
Posts: 2,460
THOR #12698
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I leave mine in the auto position and turn on a fan for extra circulation if needed.
Paul
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07-22-2021, 02:28 PM
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#5
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,117
THOR #7035
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"Better" in what way? And you're assuming the compressor would even cycle in HOT weather.
We leave ours in AUTO during the day but turn the fan ON at night for continuous white noise rather than having the whole thing cycle while sleeping.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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07-22-2021, 02:56 PM
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#6
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Senior Member
Brand: Still Looking
State: Texas
Posts: 6,187
THOR #2121
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What Ace said above.
In “hot” weather I set thermostat cold enough that air conditioner won’t cycle so both compressor and fan stay on. I have never owned or rented an RV where temperature got uncomfortably cool when it was really hot outside. I prefer RV stay a little cooler just in case it can’t keep up later if conditions change.
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07-22-2021, 03:18 PM
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#7
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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We just run a small fan in order to get some air circulation.
It's much quieter than running the A/C unit's fan...
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-23-2021, 03:04 PM
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#8
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Senior Member
Model: 25.2 Axis
State: Arizona
Posts: 839
THOR #3471
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Everywhere I’ve traveled this summer I’ve heard the same thing from new owners. It’s too hot. I suggest they travel in cooler months but the answer is the kids will be in school. I’ve got mother for that. Maybe someone else has the answer or I believe we are going to see a lot of used rvs on the market.
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07-23-2021, 03:22 PM
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#9
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Senior Member
Brand: Redwood
Model: 36FB
State: Arizona
Posts: 1,766
THOR #3610
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Quote:
Originally Posted by Hugh.vines@att.net
Everywhere I’ve traveled this summer I’ve heard the same thing from new owners. It’s too hot. I suggest they travel in cooler months but the answer is the kids will be in school. I’ve got mother for that. Maybe someone else has the answer or I believe we are going to see a lot of used rvs on the market.
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I would have to agree, there's going to be a flood of barely used RVs of all shapes/sizes/types in the very near future!
Most didn't have a clue of what to buy or what they bought, how much work it can be, all the routine maintenance required to keep it up, if not properly equipped they can't run everything they want parked in the middle of nowhere with only batteries & in the towables they can't tow it with their Prius like the salesman said
__________________
Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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08-01-2021, 02:53 AM
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#10
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Member
Brand: Thor Motor Coach
Model: Freedom Elite 24HE (24F)
State: Michigan
Posts: 64
THOR #17874
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My theory on the AC fan is the roof of your coach where those ducts are routed is being baked by the hot sun. When the AC compressor isn't running you're basically operating a solar heater with the fan running so it'll actually heat your coach up faster than if you left it in auto and the fan stopped if/when it reached the set point.
My exception to this is when I'm visiting family and I can only get a 15 amp outlet. I set the fan on low speed constant to reduce the amp draw and avoid the extra in-rush current when the compressor starts having to also start the fan. The compressor runs more often because of the heating effect but I haven't tripped a breaker yet.
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08-01-2021, 04:07 AM
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#11
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Senior Member
Brand: Thor Motor Coach
Model: A.C.E. 27.2
State: Indiana
Posts: 1,842
THOR #14698
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IDK we leave the the fan on. A/C rarely cycles off anyway during the day. We prefer the fan running at night to circulate the air and as ACE stated we also like the white noise.
__________________
2018 ACE 27.2
Toad 2019 Jeep Cherokee Trailhawk
Roadmaster Falcon All Terrain Towbar
Roadmaster Invisibrake
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08-01-2021, 02:52 PM
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#12
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Senior Member
Brand: Still Looking
Model: Sunstar 29VE Winnebago
State: Texas
Posts: 5,584
THOR #13058
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Do any of you have thermostats with a mode in between Fan On and Auto?
i.e. on Air Excel Thermostat model we have Cool Lo & Cool Hi, but if we are boondocking near others we don't run the AC at all during the quiet time. If we have shorepower, then at night we have FRONT AC on AUTO with temperature set. It is ducted to the bedroom. It is not so much to avoid the noise, but to control the volume of air blowing down on us because it is not as strong coming from FRONT unit in Main cabin to the Bedroom as if it was coming from the unit directly above in the bedroom.
I can't think of when we used FAN on ON either Hi or Low; for either unit? If Generator is running then white noise is none factor, if on shore power, I just assume have the ACs running. From this thread, I may try to put both units on COOL LO one night to see what happens. I think we would freeze
__________________
2019 Sunstar 29ve; Toad Lincoln Navigator; RVi Brake 3 & Command Center; Roadmaster Nighthawk Tow bar & Baseplate; Sumo Springs; Safe T Plus; Onan EC-30 AGS; Vmax 250ah AGM; T-Mobile Internet; H/W Heater / Chassis Disconnect Switches; Southwire Surge Guard 44270 & 34951 w/Monitor 40301; Jet Flo Macerator; Alpine SPE500 Speakers; Visio M21D-H8R
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08-01-2021, 03:45 PM
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#13
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Senior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 2,324
THOR #6903
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Quote:
Originally Posted by Bob Denman
We just run a small fan in order to get some air circulation.
It's much quieter than running the A/C unit's fan...
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We run the ceiling fan on low or high also both for comfort and a slight amount of white noise
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08-01-2021, 07:51 PM
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#14
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Senior Member
Brand: Thor Motor Coach
Model: Vegas 25.6
State: New Mexico
Posts: 5,100
THOR #20220
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Any small fan to push air recommendation?
__________________
LAS CRUCES 2020 Thor Vegas 25.6
Lora & George. Golden Retriever & Multi-Gen Australian labradoodle & new ALD in March. Happy Campers!! E Biking, Hiking, Tennis, Scuba,Fishing,Cross Country Skiing, Snowshoeing. Retired H.S. Principal, Sr. IT Engineer, Life & Health Insurance Agent
"Today is a Gift and Why it is called the Present"
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08-01-2021, 11:22 PM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: Miramar 37.1
State: California
Posts: 2,460
THOR #12698
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I use a table top model called Vornado that I bought at Costco for around $40.00. It pushes a lot of air for it's size. I believe it is about a 12" fan. It has 3 speeds.
Paul
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08-01-2021, 11:46 PM
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#16
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,117
THOR #7035
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Quote:
Originally Posted by dkoldman
Do any of you have thermostats with a mode in between Fan On and Auto?
i.e. on Air Excel Thermostat model we have Cool Lo & Cool Hi, but if we are boondocking near others we don't run the AC at all during the quiet time. If we have shorepower, then at night we have FRONT AC on AUTO with temperature set. It is ducted to the bedroom. It is not so much to avoid the noise, but to control the volume of air blowing down on us because it is not as strong coming from FRONT unit in Main cabin to the Bedroom as if it was coming from the unit directly above in the bedroom.
I can't think of when we used FAN on ON either Hi or Low; for either unit? If Generator is running then white noise is none factor, if on shore power, I just assume have the ACs running. From this thread, I may try to put both units on COOL LO one night to see what happens. I think we would freeze
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Our OEM thermostat had HEAT OFF COOL on one switch
FAN AUTO ON on another switch, and
FAN HIGH LOW on a third switch.
So the fan could be run in either ON or AUTO modes in either HIGH or LOW speeds.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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08-02-2021, 02:25 AM
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#17
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Senior Member
Brand: Still Looking
Model: Sunstar 29VE Winnebago
State: Texas
Posts: 5,584
THOR #13058
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Quote:
Originally Posted by 16ACE27
Our OEM thermostat had HEAT OFF COOL on one switch
FAN AUTO ON on another switch, and
FAN HIGH LOW on a third switch.
So the fan could be run in either ON or AUTO modes in either HIGH or LOW speeds.
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You made me go get my manual... basically my Digital Thermostats do the same thing as you have described.
I did learn something that I didn't know. Say I have my Thermostat set at 78 degrees
When I set Unit for Cool Lo, or Cool High, the Fan will run continuously. If the Coach temperature hit 79 or higher, the Compressor will kick on I had incorrectly assumed that the Compressor would come on and stay on continuously not knowing that once temperature has been satisfied the Compressor will kick off; but Fan stay on
I will try that, especially if I am hooked up to only 20/30 amps power. It may be a more efficient way to save energy because when set to AUTO and temperature is met, everything shuts down and it gets hot faster inside the coach and it restarts the cycle; it also goes from loud to quiet. When Cool Lo or Cool Hi; the fan is always running so you do have some white noise, but if it gets warm, it will also turn AC compressor back on to which I like.
__________________
2019 Sunstar 29ve; Toad Lincoln Navigator; RVi Brake 3 & Command Center; Roadmaster Nighthawk Tow bar & Baseplate; Sumo Springs; Safe T Plus; Onan EC-30 AGS; Vmax 250ah AGM; T-Mobile Internet; H/W Heater / Chassis Disconnect Switches; Southwire Surge Guard 44270 & 34951 w/Monitor 40301; Jet Flo Macerator; Alpine SPE500 Speakers; Visio M21D-H8R
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08-02-2021, 04:18 AM
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#18
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Senior Member
Brand: Thor Motor Coach
Model: XG 32 Omni
State: Missouri
Posts: 842
THOR #4243
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Quote:
Originally Posted by paulwadley
I use a table top model called Vornado that I bought at Costco for around $40.00. It pushes a lot of air for it's size. I believe it is about a 12" fan. It has 3 speeds.
Paul
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We have been using this same fan for several years, it makes a difference.
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08-03-2021, 02:27 PM
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#19
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Junior Member
Brand: Thor Motor Coach
Model: Freedom Traveler 30 A
State: Texas
Posts: 19
THOR #21497
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Quote:
Originally Posted by RBard48
In hot weather is it better to have A/C in auto where the fan cycles on and off or better to leave the fan running for circulation? Interested in what others have experienced.
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I leave mine on auto. I always turn on both A/c units. The glass in the front end of my unit radiates heat. Colorado, Utah, Idaho and Washington were all above 100 in July.
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