EG4 Warranty and Support Issues – A Cautionary Experience

[sam711]

I wanted to share my experience with EG4 to help inform others in the DIY solar community who may be considering their products.


I purchased an EG4 6000XP inverter in November 2024. It failed in early May 2025, and since then I’ve been stuck in a frustrating loop trying to get warranty support. The inverter powers my entire home, and the failure has caused all of my appliances to emit a low humming noise. One appliance has already failed because of it.


I first contacted their distributor, Current Connected, who had me jump through hoops for over a week with no resolution. I then reached out to EG4 directly on May 5, and on May 13 was told by Jared that I’d receive an advance replacement unit. However, as of today, I still haven’t received a tracking number or any confirmation. I’ve called and emailed repeatedly with no response.


This experience has left me with serious concerns about EG4’s support and warranty process. I understand things can go wrong with any hardware, but the lack of communication and follow-through has been unacceptable—especially for a mission-critical system like a whole-house inverter.


If anyone has suggestions for getting through to EG4 or escalating a case, I’d be grateful. I have spoken to a manager, who promised me an update within an hour and then did not update me for well after an hour. Also with no commitment that a replacement unit can be shipped out today at this point. Otherwise, I hope this post helps others make a more informed decision before investing in their products.

 

[42OhmsPA]

Sorry you're having issues.

I wanted to share my experience with EG4 to help inform others in the DIY solar community who may be considering their products.


I purchased an EG4 6000XP inverter in November 2024. It failed in early May 2025, and since then I’ve been stuck in a frustrating loop trying to get warranty support. The inverter powers my entire home, and the failure has caused all of my appliances to emit a low humming noise. One appliance has already failed because of it.


I first contacted their distributor, Current Connected, who had me jump through hoops for over a week with no resolution. I then reached out to EG4 directly on May 5, and on May 13 was told by Jared that I’d receive an advance replacement unit. However, as of today, I still haven’t received a tracking number or any confirmation. I’ve called and emailed repeatedly with no response.


This experience has left me with serious concerns about EG4’s support and warranty process. I understand things can go wrong with any hardware, but the lack of communication and follow-through has been unacceptable—especially for a mission-critical system like a whole-house inverter.


If anyone has suggestions for getting through to EG4 or escalating a case, I’d be grateful. I have spoken to a manager, who promised me an update within an hour and then did not update me for well after an hour. Also with no commitment that a replacement unit can be shipped out today at this point. Otherwise, I hope this post helps others make a more informed decision before investing in their products.

@Will Prowse
@HighTechLab
@James Showalter

 

[aliarifat794]

I wanted to share my experience with EG4 to help inform others in the DIY solar community who may be considering their products.


I purchased an EG4 6000XP inverter in November 2024. It failed in early May 2025, and since then I’ve been stuck in a frustrating loop trying to get warranty support. The inverter powers my entire home, and the failure has caused all of my appliances to emit a low humming noise. One appliance has already failed because of it.


I first contacted their distributor, Current Connected, who had me jump through hoops for over a week with no resolution. I then reached out to EG4 directly on May 5, and on May 13 was told by Jared that I’d receive an advance replacement unit. However, as of today, I still haven’t received a tracking number or any confirmation. I’ve called and emailed repeatedly with no response.


This experience has left me with serious concerns about EG4’s support and warranty process. I understand things can go wrong with any hardware, but the lack of communication and follow-through has been unacceptable—especially for a mission-critical system like a whole-house inverter.


If anyone has suggestions for getting through to EG4 or escalating a case, I’d be grateful. I have spoken to a manager, who promised me an update within an hour and then did not update me for well after an hour. Also with no commitment that a replacement unit can be shipped out today at this point. Otherwise, I hope this post helps others make a more informed decision before investing in their products.

Compile all communication (emails, call logs, messages, and names of reps/managers). Take photos or videos of the inverter issue and any resulting damage (e.g., the failed appliance).

 

[Chuck2]

Your mileage may vary, but if my entire house was on it, and I only had one, I would buy another one now, swap it in and then keep whatever you receive as a result of the issue on the shelf for next time.

I intend to run a few more inverters at home soon and plan to run all Flexboss21's, even though some could technically be smaller, simply for redundancy. I can choose to swap them around, should one fail.

Often times, pump stations are designed this way, so that if 2 pumps are needed, 3 are in the design and the controller rotates them for equal wear and tear, and in the case of a failure, the other 2 handle business while maintenance is performed.

The less faith (nearly none for me anymore) you place into help and warranty in this world, the better. I just assume there is no warranty (or any that would actually matter) on anything anymore. What is your TIME worth....

This in no way belittles your point about how they should respond (assuming of course that you have been perfect on your end of this deal). People should stand behind their stuff, to the extent that they are responsible....... but in the meantime, while they figure all that out.... yank one out of a box behind you and slap it on the wall. Crisis over for the moment.

Everything is relative, but the 6kxp is probably affordable enough to sit on a shelf in many cases. Or use it for another area or building or project on site and again.... swap them out if needed, like say, the house inverter goes down, go grab the one running the shop and the shop can go without during the period of warranty swapping instead of the house.

Again, not in any way downplaying the need for prompt warranty....... just offering a solution for an alternative reality where prompt warranty is the exception, not the rule. The reality I believe we live in more and more each day.

 

[Brucey]

@SignatureSolarJess

 

[SignatureSolarJess]

@SignatureSolarJess

Hi Bruce! Thanks for the tag! Not much I can do myself as it's from another distributor, but I'll certainly send out a couple of messages to see if we can get some attention over here!

@EG4TechSolutionsTeam

 

[Dave911]

Hi Bruce! Thanks for the tag! Not much I can do myself as it's from another manufacturer, but I'll certainly send out a couple of messages to see if we can get some attention over here!

@EG4TechSolutionsTeam

Another manufacturer.... you mean the guys next door?
If only the guy that owned Signature Solar also owned EG4.....oh, wait! ....
James, where are you!

 

[SignatureSolarJess]

Another manufacturer.... you mean the guys next door?
If only the guy that owned Signature Solar also owned EG4.....oh, wait! ....
James, where are you!

Ooof, I'm sorry. I meant distributor! Correcting that!

 

[42OhmsPA]

Weren't there at least a couple threads with other reports of the same humming issue in the last few weeks?
I'm in between meetings at the moment or I'd search for them.

 

[42OhmsPA]

Here's one I was thinking of. There are other threads linked in the first few posts.

S

Thread 'Weird grid use spike and hum/rattle noise - EG4 6000xp'

May 11, 2025

@EG4TechSolutionsTeam

I had a couple of spikes of grid imports with a weird hum/rattle noise associated with them. Is there a reason for this?

I have only two types of loads that are short duration with fairly high power usage: Deep well pump starting and furnace blower cycling. Well pump power usage (blue down arrows) is higher than the blower. In the image below (from yesterday) of my system performance, there are two times where the well pump start seems to drive brief grid imports (red up arrows). This is NOT typical but it has happened rarely in the past. Strangely...

• Steelart99
• Replies: 25
• Forum: DIY Solar General Discussion

 

[EG4TechSolutionsTeam]

Thank you for your message. It appears this post is in reference to an email we received earlier this morning and also seems to be linked to the following thread on the DIY Solar Forum: https://diysolarforum.com/threads/6000xp-only-outputting-120v-not-240v-hardware-issue.104526/.

We wanted to take a moment to acknowledge and address your concerns directly:

First and foremost, I want to sincerely apologize for the support experience prior to contacting EG4. We understand how critical your power system is, and we truly appreciate the patience and persistence you’ve shown throughout this process.

After reviewing our records, it appears that May 12th was the first time this specific issue was brought directly to our technical support team, during your call with our technician Colton. From that point forward, our team actively worked to troubleshoot the inverter until May 14th, at which time our technician Jacob determined the unit to be defective and initiated the RMA process.

While our standard policy requires the defective unit to be returned before shipping a replacement, we are making an exception in this case by issuing an advanced replacement. Unfortunately, internal delays related to a Microsoft system migration affected our processing timeline, and we deeply regret the impact this had on your experience.

That said, I want to personally assure you that your replacement unit is being prioritized. The inventory has already been allocated, and we are actively working to ensure it is processed and shipped out today. You will receive a tracking number as soon as it becomes available.

Thank you again for your understanding, and please don’t hesitate to reach out if you have any further questions or concerns.

 

[42OhmsPA]

Thank you for your message. It appears this post is in reference to an email we received earlier this morning and also seems to be linked to the following thread on the DIY Solar Forum: https://diysolarforum.com/threads/6000xp-only-outputting-120v-not-240v-hardware-issue.104526/

I'm pretty sure @lane77 and @sam711 are different members. Interesting it appears they both have the same location in their profiles so maybe they are the same person. If that's the case and they made a new account to post the same issue something doesn't add up.

 

[42OhmsPA]

Update: I can’t believe I didn’t think of this sooner—it would have saved me days of troubleshooting, $200 in wire, and complete rewiring.

I ran an extension cord directly from the inverter to my range hood, completely bypassing my home wiring, and the humming sound is still there. At this point, I’m confident this is 100% an internal issue with the inverter.

I have an open ticket with Current Connected, and they’ve escalated it to EG4. Has anyone dealt with EG4 warranty support before? Do they send out techs, ship replacement parts, or expect you to do the repair yourself? Also, how long does the process usually take?

I’m pretty concerned about potential appliance damage, so I’m hoping to get this resolved as quickly as possible. Any insight would be appreciated!

View attachment 297629

Hmmm. It sure looks like the same person made a 2nd account and didn't give the full story about it working fine before an electrician did some work.
The original thread linked by @EG4TechSolutionsTeam above gives the full story....

@Will Prowse are you able to see if it's the same account (assuming a VPN wasn't used during registration)?

 

[Will Prowse]

I'm pretty sure @lane77 and @sam711 are different members. Interesting it appears they both have the same location in their profiles so maybe they are the same person. If that's the case and they made a new account to post the same issue something doesn't add up.

They are using same IP address. Obviously not allowed to share it. Good call.

 

[sam711]

The other account is my husbands. He was in training for most of the day for work so I created a new account to ask for any tips in dealing with the EG4. This thread is a totally seperate topic regarding warranty support while the referenceed thread was regarding a technical issue.

The callout by @42OhmsPA is quite silly and non productive. I can't help but think you may too much time on your hands my friend.

 

[42OhmsPA]

The other account is my husbands. He was in training for most of the day for work so I created a new account to ask for any tips in dealing with the EG4. This thread is a totally seperate topic regarding warranty support while the referenceed thread was regarding a technical issue.

The callout by @42OhmsPA is quite silly and non productive. I can't help but think you may too much time on your hands my friend.

It appears support was already being provided in the other thread and it was evident that the issues started after an electrical contractor made changes to your system.

How can you ask for support from a vendor when the issues started after a contractor performed work on your electrical system and it was stated everything was working fine before the contractor performed the work?

I feel that the call out was quite productive. I'm not a huge EG4 fan but have to give defense when it seems warranted.

I hope you are able to get your issues resolved.

Thanks for noticing I manage my time well.

 

[Will Prowse]

The other account is my husbands. He was in training for most of the day for work so I created a new account to ask for any tips in dealing with the EG4. This thread is a totally seperate topic regarding warranty support while the referenceed thread was regarding a technical issue.

The callout by @42OhmsPA is quite silly and non productive. I can't help but think you may too much time on your hands my friend.

There are a lot of claims not substantiated with evidence that we must sort through. It's good for posts to be called out so we can create a solution and ask for more information. I cannot do anything unless I have evidence of wrong doing.

 

[sam711]

The other thread is quite long, so maybe you missed it, but in the end the isues had nothing to do wiring or anything that the electrician did. (I was quick to blame him too) Even when I connected appliances directly to the 6000xp with an extension cord (bypassing the sub panel that the electrician worked on) the humming sound of my appliances was still present. The W108 error message "AC out of range" was still present, even when the grid connection was physically disconnected. There is simply something wrong with the inverter, which I have only had since November.

Also I didn't contact EG4 until I spent 2 weeks working day and night to resolve the issue on my side. This includes completely rewiring the entire system and hiring another electrician ( a larger company with solar experience) to rewire the sub panel and check that all wiring was correct.

Lastly, you have no additional context (and I find the insinuation offensive) relative to the amount of work the distributor had me complete to rule out issues on my side to include wiring. This included several firmware updates and sending photos and videos that were not posted on the forum. I originally sent this message out to get some customer service support so I will now take this offline as this is a waste of our time.

PS: the W108 error message started happening 2 days before the electrician arrived.

 

[ScrodusGargleRotten]

Thanks for noticing I manage my time well.

god forbid you have a good memory! lol, i smelled the same thing from the first "hum" and the green connected to neutrall

 

[DougL]

I wanted to share my experience with EG4 to help inform others in the DIY solar community who may be considering their products.


I purchased an EG4 6000XP inverter in November 2024. It failed in early May 2025, and since then I’ve been stuck in a frustrating loop trying to get warranty support. The inverter powers my entire home, and the failure has caused all of my appliances to emit a low humming noise. One appliance has already failed because of it.


I first contacted their distributor, Current Connected, who had me jump through hoops for over a week with no resolution. I then reached out to EG4 directly on May 5, and on May 13 was told by Jared that I’d receive an advance replacement unit. However, as of today, I still haven’t received a tracking number or any confirmation. I’ve called and emailed repeatedly with no response.


This experience has left me with serious concerns about EG4’s support and warranty process. I understand things can go wrong with any hardware, but the lack of communication and follow-through has been unacceptable—especially for a mission-critical system like a whole-house inverter.


If anyone has suggestions for getting through to EG4 or escalating a case, I’d be grateful. I have spoken to a manager, who promised me an update within an hour and then did not update me for well after an hour. Also with no commitment that a replacement unit can be shipped out today at this point. Otherwise, I hope this post helps others make a more informed decision before investing in their products.

Current Connected is your supplier of the equipment so once you failed with them and then EG4 tech support validated the issue was a failed inverter, why did you NOT contact Current Connected with that information and let them handle the replacement? You left out lots of information like who installed it since they too should be involved with the replacement process. $0.02

 

[aussiesam]

There are a lot of claims not substantiated with evidence that we must sort through. It's good for posts to be called out so we can create a solution and ask for more information. I cannot do anything unless I have evidence of wrong doing.

@42OhmsPA and the others who posted after you are 100% correct.

I called this individual out a week or so ago after we spent a lot of time going over his setup. I looked into his previous posts and there was a pattern of him continuously doing the wrong thing and blaming others. His own electrician walked out on him because of it.
We tried to help him, but it seemed like he was trying to make a case for why the product was faulty instead of acknowledging that he didn't know what he was doing. When we would ask questions to assist he would ignore the majority and continued building his case. It's abusive behavior and I ended up calling him out on it. I even tagged @HighTechLab and @EG4TechSolutionsTeam to get their attention.

And what did he do?.. He created a new account to smear them 6 days after they promised him a return.

 

[42OhmsPA]

I'll try to stay out of this thread after this.
I just don't want to see anyone getting screwed when they aren't at fault.

Weird thing is that the system had been working for a few months with zero issues. The electrician that originally hooked it up did temporarily disconnect it last week when he was doing some work on a new sub panel.

 

[EG4TechSolutionsTeam]

The customer has been updated. A replacement inverter will be shipping out today, and tracking information has been provided.

 

[Dave911]

A lot of back and forth here and EG4 has agreed to send out a replacement inverter. So it sure sounds like its a bad inverter. How could have the end user caused this humming issue?

 

[awoken]

@sam711 Thank you for bringing this to our attention. The lengthy process of deducing what is causing a problem can be frustrating, and I sincerely apologize.

Upon reviewing the case and details, we see that our support staff spent about a week troubleshooting the issue with daily updates when we deemed it necessary to RMA the unit.

On May 13, we sent out an email with the RMA paperwork so you could return the unit and we could get it sent in to EG4 for warranty work. Unfortunately, we have yet to receive a response to the RMA we issued.

We are happy to hear that you are receiving an expedited replacement unit and that this matter has been resolved. We want to see our customers taken care of, and we love working with manufacturers who share the same goal.

On behalf of @HighTechLab, if there is something you believe we could have done better, please send us the details so we can work with our team for any shortcomings. We take and consider all feedback we receive.