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Small Cabin Forum / Off-Grid Living / Generac 15KW EcoGen - Model 7163
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Cephus91
Member
# Posted: 10 Mar 2019 10:36
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Greetings. I am about to start a build of an off grid solar system in central GA to support a 1450 sq ft manufactured home. SolArk 48v 8K inverter, 20 6kW panels, 19.2 kWh PCC batteries. I am looking at the Generac 15KW EcoGen Model 7163 to backup and support the batteries if they get too low. Per Generac’s website, this model is designed to work in this application.

I was hoping to hear from someone who has experience with this model. I saw some bad reviews online, but this seems to be the best fit for what we are looking for. I searched the forum and did not see anything specific to this particular model. Thanks in advance.

ICC
Member
# Posted: 10 Mar 2019 12:09
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Generac has had some problems over the past decade. I have a friend who has had one of the Generac's that are rated for off grid use. (Many of their models are for standby use--- backup for when the grid goes down. If used off grid Generac voids those warranties).

He got an extended warranty and all the problems have been repaired. I think they even replaced the entire engine.

Brettny
Member
# Posted: 10 Mar 2019 14:56
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If you read the fine print i bet that generac says "not for primary source of power" even if you have solar thats what you will be doing with it. Kiss your warrenty good by.

Buy a cummins diesel or other good diesel brand.

Cephus91
Member
# Posted: 10 Mar 2019 15:16
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This is directly from the Generac website -

"Whether the off-grid lifestyle is a choice or a necessity, you are responsible for producing the energy you consume – even when there’s no sun or wind. Ensure you never have dead batteries with the Generac EcoGen–the only automatic standby generator designed and warrantied specifically for off-grid use with an alternative energy system"

http://www.generac.com/all-products/generators/home-backup-generators/ecogen/15kw-703 4-wifi-enabled

Brettny
Member
# Posted: 12 Mar 2019 13:19
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Thats new by me. I would be still intrested to see what a "limited warrenty" includes.

Did you read the first few reviews?

hamish
Member
# Posted: 12 Mar 2019 16:19
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What are you powering that you require a 15KW generator?
Natural gas or propane? Either way I would cringe at the cost of it running.
If you want to get serious about things get yourself a diesel genset, Cummins and MEP come to mind.

Cephus91
Member
# Posted: 13 Mar 2019 08:00
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15 KW is admittedly more than we need, but that is the only one they are selling that is designed to work on an off the grid system. AC will be the biggest draw in the summer. We are using propane for heat, so want to use propane for the generator as well.

Brettny
Member
# Posted: 13 Mar 2019 10:56
Reply 


I dont really see how its designed for off grid. They dont really go into the specifics of what rhey changed even when someone asked that on the site.

I own a MEP at my house. I bought it and seval others a few years ago before the price went way up. I would look into something more like a yanmar or other japanese diesel now.

You may need to weigh how many days you need to run the AC and the fuel savings by having a small more fuel efficient generator for the rest of the year. Mabe even just buy a used 15k for far less.

ICC
Member
# Posted: 13 Mar 2019 14:37
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Quoting: Brettny
I dont really see how its designed for off grid. They dont really go into the specifics of what rhey changed even when someone asked that on the site.


It doesn't matter at all what they do. The warranty is void for those generators they rate as standby use only if you use it off grid. If they come out to service and see power grid lines, the warranty is void.

I messed up my post above.... I have a friend who has one of the off grid approved models from about 2008. He did need warranty service several times. His engine had an oil leak and I think they ended up replacing the engine power unit. The control module went wonky and was replaced. They serviced the claims okay He did buy an extended warranty I believe, but am not sure about that. Another acquaintance also had some warranty claims with the same model. His problems were repaired at no cost to him too.

Both off grid and both had an approved for off grid version.

ICC
Member
# Posted: 13 Mar 2019 14:48 - Edited by: ICC
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That said, it is possible to run A/C on solar. First you need to build with energy conservation in mind and air seal and insulate well. Shade the windows. You might need an air-to-air heat/energy recovery system as well. I have one to keep the air fresh inside without wasting energy. Then use split mini A/C and buy the most efficient you can get. They are also very good at supplying heat when needed. I have a Mitsubishi system that has zones so I don't have to heat or cool the spaces to the same level or leave some areas unconditioned if they are not used. All run off one compressor unit that is extremely quiet.

The main reason I run the generator is solely to keep it in shape. I use an old generator I already had. No warranty on it for many years now.

Brettny
Member
# Posted: 14 Mar 2019 12:19
Reply 


Quoting: ICC
doesn't matter at all what they do. The warranty is void for those generators they rate as standby use only if you use it off grid. If they come out to service and see power grid lines, the warranty is void.

I messed up my post above.... I have a friend who has one of the off grid approved models from about 2008. He did need warranty service several times. His engine had an oil leak and I think they ended up replacing the engine power unit. The control module went wonky and was replaced. They serviced the claims okay He did buy an extended warranty I believe, but am not sure about that. Another acquaintance also had some warranty claims with the same model. His problems were repaired at no cost to him too


I would think being off grid you would want a more reliable generator or at least if your going to rely on the warrenty one that is portable with a close by repair center.

Most of these stand by generstors are useing air cooled lawn mower engines. There poor chinese quality. This is why i say Japanese or cummins.

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