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Posted on 8/31/12 at 10:12 am to Dr Pepper
quote:
about to put in a 70kw whole home gen
Brag post? Your house must be at least 8,000 square feet to justify that large of a generator.
Posted on 8/31/12 at 10:18 am to Ziggy
quote:
Are any of the brands quieter than the others?
I've heard Kohler and Onan have much more expensive replacement parts than brands like Generac.
I put in a Kohler natural gas unit about 4 years ago (before Gustav). At that time it was considered to be much better (but was more expensive) than the Generacs. Briggs & Stratton is supposedly a good compromise in quality between the two.
The water-cooled units are the quiet ones. They run at half the RPM's of the air-cooled models.
This post was edited on 8/31/12 at 10:20 am
Posted on 8/31/12 at 10:21 am to msu202020
quote:
Brag post? Your house must be at least 8,000 square feet to justify that large of a generator.
didn't mean to make it sound that way. I am a contractor and am putting one in at someone else's home. the house is about 5400 sq ft but they have 4 ac units, and here in Florida you have to do permitted load calculations and have to buy a generator that will handle so much percentage over the calculated load. Hence the need for a 70 kw.
Posted on 8/31/12 at 10:29 am to msu202020
quote:
Between 200-300 cu/ft of natural gas per hour
Got any idea what that equates to in terms of dollars?
Posted on 8/31/12 at 10:31 am to poule deau
quote:
Got any idea what that equates to in terms of dollars?
A lot after Hurricane Ivan here in Pensacola I know someone that had to run their whole home gas generator for 2 weeks and his bill was north of $3,000
Posted on 8/31/12 at 10:35 am to poule deau
quote:
Got any idea what that equates to in terms of dollars?
At current rates, 1.00-1.52 per hour. Natural Gas is cheap in LA right now. .52 per CCF.
Posted on 8/31/12 at 11:08 am to msu202020
Thanks for all the info everyone. 
Posted on 8/31/12 at 11:16 am to meauxjeaux2
quote:
I've heard of $500 natural gas bills for a week of running one
Depends on the size. This is my 36KW Generac "QuietSource" (runs at a low 2400 rmps) series liquid cooled generator unit that I have at my house. You can expect a $1,000 per WEEK gas bill for running this big of a unit. That said, it runs everything electrical in the house at the same time just like I am hooked up to power. The 27KW would have had some limitations, so I upgraded to this one. A luxury, for sure, but damn nice to have this week.
quote:
I can't give you a number off the top of my head but I'll give you a recommendation: Do your homework before running a gas line. I know a few people that ran their own and didn't use large enough pipe so they can't get the minimum flow.
It may also be a good idea to upsize the unit a little bit so it's not running at full load. The upfront cost may be less than 1 week running it at 90% over a larger unit at 60%.
Yes, its not the gas line usually that it is inhibiting factor. It's the gas meter! I had to change my meter out to deliver the proper pounds of pressure that it needed. I had them put one size bigger than they recommended (no additional charge) because the installer said so many people in my neighborhood have these, that the up-sized unit would make sure I had plenty if the gas pressure got low due to so many on my street.
This post was edited on 8/31/12 at 11:21 am
Posted on 8/31/12 at 12:02 pm to Ziggy
look at the carrier 25kw. They aremore expensive but worth it. ITs quiet and realiable - low oil burn and very low maintanence.
However, there is no point in spending money on a quiet generator if the people next door have a loud one. Lesson learned
However, there is no point in spending money on a quiet generator if the people next door have a loud one. Lesson learned
Posted on 8/31/12 at 12:05 pm to Mako
Just FYI for a lot of you with exterior home generators... i'm about 99% sure they aren't covered by your flood policy, keep that in mind.
Posted on 8/31/12 at 12:40 pm to Howard Juneau
quote:
You can expect a $1,000 per WEEK gas bill for running this big of a unit.
During Gustav my Kohler ran for 10 days, 24 hours per day. We ran all three central A/C units (4300 sq. ft.) plus TVs, washer, dryer, ovens microwaves etc. All this stuff ran continually since we had kids & their families with us during the power outage.
My utility bill was significantly lower that month than it was for the previous months. I get electrical and gas service from Entergy. KWH dropped, and gas usage went up that month. Total bill was less than $400 for the month in which we ran the generator.
Gas and electricity rates change, and are probably different now. But as was pointed out, natural gas is still cheap. $1000 per week sounds awfully high, unless you have oversized your unit. An oversized unit will burn a lot more fuel at low loads (idle speed) than you would in a smaller generator at low loads.
This post was edited on 8/31/12 at 12:45 pm
Posted on 8/31/12 at 12:41 pm to Chad504boy
quote:
Just FYI for a lot of you with exterior home generators... i'm about 99% sure they aren't covered by your flood policy, keep that in mind.
NFIP covers standby generators as part of the house electrical system.
Posted on 8/31/12 at 1:42 pm to Ziggy
Carrier.
Posted on 8/31/12 at 2:02 pm to Ziggy
Generac without a fricking doubt 
Posted on 8/31/12 at 2:07 pm to Dr Pepper
quote:
about to put in a 70kw whole home gen
My parents have a 3500sq ft house and only need a 20kw. At full load, the house uses 16kwPosted on 8/31/12 at 2:14 pm to TigersSEC2010
I have a 27K Generac as others have said the BIGGEST thing is get a liquid cooled generator. I like my generac a lot, however Onan has likely the best reputation out of all of them.
Mine runs off Propane as NG isn't available where I live. My generator burns about 3gal/hr of LP, so about $60/day to run it, cheaper than a hotel and I don't have to evacuate. We loose power here at the farm on a very regular basis, so it's nice to have then on long stretches like this it's really nice. Of course just got power a few hours ago so we are happy again!
Mine runs off Propane as NG isn't available where I live. My generator burns about 3gal/hr of LP, so about $60/day to run it, cheaper than a hotel and I don't have to evacuate. We loose power here at the farm on a very regular basis, so it's nice to have then on long stretches like this it's really nice. Of course just got power a few hours ago so we are happy again!
Posted on 8/31/12 at 4:15 pm to Da Hammer
Is yours liquid cooled? What model number is your generator?
Posted on 8/31/12 at 5:28 pm to Ziggy
Generac is the only answer!!!!
Posted on 8/31/12 at 8:23 pm to Ziggy
quote:
s yours liquid cooled? What model number is your generator?
Yes it is liquid cooled. Not sure of the model number as I purchased it about six years ago. However it's a Generac 27 KW. I'll try and take a pic or something tomorrow.
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