Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 08-11-2022, 03:37 PM   #1
Member
 
Moniki's Avatar
 
Join Date: Aug 2018
Location: Austin, TX
Posts: 31
How much gas…

First time boondocking. We have a gas generator, 4000 watts, and a 15,000 btu A/C unit, any idea how much gas it uses per hour?

The Mo-Rons
__________________
The Mo-Rons
2019 Lance 2375 TT
2017 Dodge Ram 1500 Hemi
Moniki is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 08-11-2022, 03:40 PM   #2
Senior Member
 
PJStough's Avatar
 
Winnebago Owners Club
Workhorse Chassis Owner
Join Date: Oct 2015
Posts: 1,608
If on the AC is running, I would say about .8 gallon per hour.
__________________
Paul J Stough Iowa
2005 Winnebago Voyage 38J
PJStough is offline   Reply With Quote
Old 08-11-2022, 08:04 PM   #3
Senior Member
 
hedhunter9's Avatar
 
Join Date: Feb 2015
Location: Indiana
Posts: 158
Our Onan gold, uses about .4 an hour with 2 13,000 units running..
Bob
__________________
2008 Damon Thor Outlaw
hedhunter9 is offline   Reply With Quote
Old 08-12-2022, 05:00 AM   #4
Senior Member
 
BigEvi's Avatar
 
Join Date: Jun 2019
Posts: 245
Top off your tank before you park.
And remember the gen will stop running at approximately 1/4 tank.

If you want to know your generator burn rate...keep track of the hours the gen runs. Then top your tank again right after you pack up and leave the boondock.
BigEvi is offline   Reply With Quote
Old 08-13-2022, 12:18 AM   #5
Senior Member
 
153stars's Avatar
 
Join Date: Mar 2019
Location: Braidwood Il.
Posts: 6,155
Pretty sure onan provides estimated fuel burn based on percentage of load for all models.
https://www.google.com/url?sa=t&sour...lzmzN5iCMf9rnc
__________________
95 Monaco Crown Royale
M11 400hp, 4060 trans.
Aquahot, Generac Guardian7.5k
153stars is offline   Reply With Quote
Old 08-13-2022, 03:47 PM   #6
Senior Member
 
SuperGewl's Avatar
 
Winnebago Owners Club
Ford Super Duty Owner
Join Date: Aug 2004
Location: Oregon
Posts: 2,663
Yo have to remember, that if the generator is running , then it is running everything in there, not just the AC.
__________________
Retired Navy Submariner
2014 Itasca Sunstar 35F; 5 Star tuned; 2014 Jeep Cherokee TrailHawk
SuperGewl is offline   Reply With Quote
Old 08-13-2022, 04:41 PM   #7
Senior Member
 
vroom_vroom's Avatar
 
Join Date: May 2020
Location: Vegas
Posts: 304
Quote:
Originally Posted by PJStough View Post
If on the AC is running, I would say about .8 gallon per hour.

This is a pretty good estimate,
Granted ours 3500 on our last trip ours averaged .7-.8 per hour with the ac running.
vroom_vroom is online now   Reply With Quote
Old 08-13-2022, 05:14 PM   #8
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 25,314
As a rule of thumb, Onan's use about 0.5 gal/hr at 50% load. A bit more for the larger ones, a bit less for the smallest sizes, but that's a pretty solid guestimate. A late model 15,000 btu a/c uses about 1200 watts, which is 1200/4000 (30%) of the generators full load capacity. That works out to be about 0.3 gal/hr for the a/c alone, but it's never alone. Your converter/charger runs whenever the genset is running, and the fridge auto-switches to electric mode too, so a good estimate would be about 0.4 gal/hr.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
Gary RVRoamer is offline   Reply With Quote
Old 08-14-2022, 10:58 AM   #9
Senior Member
 
Join Date: Nov 2008
Location: Kennewick, Washington
Posts: 406
Quote:
Originally Posted by hedhunter9 View Post
Our Onan gold, uses about .4 an hour with 2 13,000 units running..
Bob
I believe I would have kept that unit! Our 5.5 uses .9 at full load.
__________________
2004 Flair 33R, 336 watts solar, Dometic Sidewise frig. Pan hard bars, front and rear, CHF, Timbrens front and rear, Roadmaster reflex steering dampener. Doug Thorley Tri-y headers, Ultra RV tune.
wildmanbaker is offline   Reply With Quote
Old 08-14-2022, 02:55 PM   #10
Moderator Emeritus
 
TXiceman's Avatar


 
Ford Super Duty Owner
Join Date: Aug 2000
Location: Full Time, TX Home Base
Posts: 22,091
Blog Entries: 21
What is the fuel usage that the owner's manual shows for your generator.?

Ken
__________________
Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
TXiceman is offline   Reply With Quote
Old 08-14-2022, 09:58 PM   #11
Senior Member
 
Join Date: Apr 2017
Location: Vista, Ca
Posts: 449
Plan for 3/4 gallon per hour of use.
__________________
1992 Dodge D250, 18cm housing, getrag 5sp, 4" straight pipe
2015 Pacific Coachworks Sand sport 18SLE
1320Fastback is offline   Reply With Quote
Old 08-14-2022, 10:29 PM   #12
Senior Member
 
Join Date: Apr 2005
Posts: 3,643
It’s been awhile but I seem to recall about 1/2 a gallon per hour with one AC and the fridge etc.
radar is offline   Reply With Quote
Reply

Tags
gas



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
How much, how much, how much,is it enough? rvethereyet Going Green 38 11-22-2017 09:48 PM
How Much is Too Much? dcarver Trailer Towing and Tow Vehicles Discussion 60 07-29-2015 08:18 PM
How much wind is to much... Buckola MH-General Discussions & Problems 11 04-17-2013 07:12 AM
How much is too much - mileage osgoor Class A Motorhome Discussions 3 11-25-2012 08:45 PM
How much play is too much? Mbl Cndo Monaco Owner's Forum 8 11-28-2007 12:47 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 04:59 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.