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What size generator do you use to run the AC in your toy hauler?

This is a discussion on What size generator do you use to run the AC in your toy hauler? within the Trucks, Tow Rigs, RV's and Camping forums, part of the Other Off-Road, UTV, and Watersports Discussion category; Hello group, I just ordered a new Toy Hauler. I'm curious what size generator to use to be able to run the AC on the ...


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Old 05-30-2010, 09:00 AM
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What size generator do you use to run the AC in your toy hauler?

Hello group,

I just ordered a new Toy Hauler. I'm curious what size generator to use to be able to run the AC on the hauler? I'm hearing lots of things,,anywhere from 2k up to 4500 is needed.
What have some of you used to make yours run? I'm trying to stay away from the Honda and Yamaha due to their price. I also want a quiet running one. I see some chinese knock offs for around 500 bucks. I've heard from a few people that they work well. I also want it to be the digital style inverter generator.

Any input??

Thanks.
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Old 05-30-2010, 10:07 AM
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If you want quiet and inverter you will have to spend the money. You get what you pay fOr. I use a Yamaha 4500 on my 25ft hauler with no problems. They better ones have remote start stop systems that can be added also.
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Old 05-30-2010, 11:51 AM
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Quote: Originally Posted by Don308 View Post
Hello group,

I just ordered a new Toy Hauler. I'm curious what size generator to use to be able to run the AC on the hauler? I'm hearing lots of things,,anywhere from 2k up to 4500 is needed.
What have some of you used to make yours run? I'm trying to stay away from the Honda and Yamaha due to their price. I also want a quiet running one. I see some chinese knock offs for around 500 bucks. I've heard from a few people that they work well. I also want it to be the digital style inverter generator.

Any input??

Thanks.

You need to add up the appliances you want to run then buy accordingly.

Normally RV campgrounds provide either a 15a or a 30a hooked.
Calculate into wattages and you get 15*120= 1800watts or 3600w for 30a service.

Anything with a heating element takes a wicked amount of power.
an average AC take 1800 watts +/- alone when running and maybe 3600watts on startup depending on quality and condition of the AC.
Anything that takes a startup draw > running wattage needs to be considered so a 1800w electric motor may need 3600w to fire up so if you need to keep some wattage in reserve if you are firing up stuff with a higher startup draw.

So the math is wattage = amps * volts
(wattage = amps * 120)

So do a survey of what you want to run. They will almost have an amp or wattage numbers on them then IMHO add 50% for startup concerns.


Some typical RV stuff
Air Compressor (1hp) 1500-2000 watts 9-20 amps
Air Conditioner 1400-2400 9-20
Battery Charger Up to 3000 6-28
Blender 600 5.5
Broiler 1350 12
Broom/Vacuum 200-500 1.5-4
Coffeepot 550-1000 4-8
Compact Disc Player & Speakers 50-100 0.5-0.9
Computer 50-100 0.5-0.9
Converter 500-1000 4-8
Curling Iron 20-50 0.2-0.5
Dishwasher 1400 12
Drill 250-750 2-6
Electric Blanket 50-200 0.5-1.5
Fan 25-100 0.2-0.9
Frying Pan/Wok 1000-1350 8-11
Hair Dryer 350-1500 3-13
Iron 500-1200 4-10
Lightbulbs 40-100 ea. 0.36-0.9
Microwave/Convection Oven 700-1500 6-13
Radio 50-200 0.5-1.5
Refrigerator 400-1000 3-8
Space Heater 1000-1500 8-13
Stove (per element) 350-1000 3-8
Television 200-600 1.5-4
Toaster 750-1200 6.5-10
VCR 150-200 1.15
Washer/Dryer 2000-2250 16
Water Heater 1000-1500 8-13
Water Pump 500-600 4-5
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Old 05-30-2010, 02:29 PM
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I have an Onan 4000 Microquiet and it runs the ac and microwave at the same time. I parked next to a guy had a chineese outfit that ran his ac i could hear a mile away.
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Old 05-30-2010, 02:40 PM
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If your looking for a portable gen get a honda eu3000i off the craigslist for arount a G. super quite and they can be setup for remote key fob start.
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Old 05-30-2010, 05:23 PM
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Save your money and buy a honda 3000. You will regret buying a cheap noisey piece of crap trust me. Put that money towards a nice honda.
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Old 05-30-2010, 07:08 PM
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4000 ONAN...best generator by far...super quiet, very reliable and it has more than enough power to operate everything I have in my toy hauler. Don't go cheap on the generator...or you will have some pissed off camping neighbors to deal with. I have the remote start button in my hauler.No one likes to be the one to go out in the freezing ass cold to start it up.
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Old 05-30-2010, 08:37 PM
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I bought one of those chinese knock off and it was the biggest POS. It work for about 20 hours and crapped out know i have been waiting over a year to get it fixed. I bought a used Honda 3000eu and it has worked flawlessly, so I wouldn't cheap out on the gen
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Old 05-31-2010, 02:55 PM
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Quote: Originally Posted by Mike Hunt View Post
I bought one of those chinese knock off and it was the biggest POS. It work for about 20 hours and crapped out know i have been waiting over a year to get it fixed. I bought a used Honda 3000eu and it has worked flawlessly, so I wouldn't cheap out on the gen


...not to kick you when you're down...but goes to show you get what you pay for. The Chinese make ****TY products PERIOD!
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Old 06-02-2010, 09:36 PM
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I've got a 5500watt Onan super quiet to run everything. I also have a honda 2kinverter for when we're just hanging out watching tv or listening the radio. I've used the chinese crap with terrible results. You get what you pay for. I don't care who tells you otherwise. Honda generators are not just quiet because of their exhaust systems. They are balanced soundwise from the intake, to the cyl. to the housing it sits in. They are built for reliable quiet sound power.

If you are looking for a main type genny, then I would say the honda 3000. That should do everything you want it to do. But that's on the lower end side. If you want A/C and want to run the oven, and run a blow dryer.... you may want to step into sticking with a qty of 2 (two) 2000watt honda inverters that tie into each other to get you good 4000watt power. Again, these two will run very quietly too!

I don't know about the Yamahas, but I bet they're good too.....well they could never be as good as the hondas though! (ride red!!!)
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Old 06-02-2010, 09:53 PM
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Go with Honda or Yami 3000. I've seen them on CL for $1,150.
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Old 06-03-2010, 10:24 AM
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1. Don't buy the Chinese junk!

2. Honda EU2000i will only run the A/C in cooler weather. In warmer temps it will overload and shut down. Ask me how I know.

3. The Honda EU3000i will run it without breaking a sweat. Plus it will run forever, and sip on fuel.

4. If you are thinking of a permanent install, go with an Onan. 4KW would be the minimum. If you could get something around 6KW that would be even better.
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Old 06-03-2010, 10:31 AM
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Honda or Yamaha for a portable is the best option. There is a make called Kipor that is pretty quiet but it is a chino brand (seems to be a little better then the pep boys ones though).

If you have an option for an on board- Onan 4000 for a little TH and 5500 for a big one
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Old 06-03-2010, 01:34 PM
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onan microquiet 7500 diesel lol runs everything, even a welder!

I agree with the portable honda 3000 eu, my EU2000 is 4 years old, uses a 3/4 gallon every 8-9 hours, been flawless, but won't run your AC.
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Old 06-03-2010, 03:58 PM
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I had a Yamaha 2400is Inverted for use on my Travel Trailer. Down here in Phoenix it ran the 13,500 AC fine. But if I went higher in altitude it would overload until I put a really big Hard Start Capacitor on the AC. Sometimes on really hot days it would take a couple of cycles to get it running especially at Lake Powell.

So if your Toy Hauler has a 15,000 BTU AC, you'll need at least a 3000 or you'll need two smaller inverters that can be paired. Both the Yamaha 2400si and the 2000eu from Honda can be run with a coupling kit that pairs the output. The one nice thing about dual gensets is that the big Honda or Yamaha generators weight about 150 lbs or more so they take at least two to move them in and out of a truck bed.

Most Toy Hauler are designed to take a generator even if one isn't installed. If that is the case you'll definately want to look at either an Onan or a Generac and install it on-board.
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