This has to be hands down the best company I have ever hired to do any kind of work. From speaking with William and him coming out for a quote, to the install day with the 3 guys, super professional crew. Worked with William over the corse of a few days getting a quote and making adjustments and seeing options, very accommodating and responds quick. And then install day the guys very early and got right to business, very respectful of the property, laid drop clothes though out their walking path. They all knew what their jobs were and got right to it. Windows were being installed within the first hour! The final product looks amazing, I had 6 retrofit windows and a sliding door (in place of a big window) installed. Very reasonable pricing, best of the 6 company's I got quotes from. I feel like I have a whole new house. 5 stars, already recommending to 2 other people . Thanks again! read more

Within one hour of requesting a quote, I had a phone call from Jeff and a home visit within a week! He was knowledgeable and friendly and I had my extremely affordable quote that same day. Today the installers arrived on time, were professional and kind, and their efficient, full-house window installation process moved along smoothly. Before leaving, they cleaned my home inside and out in the locations where they had worked. My windows look beautiful, and I will be recommending this company to all of my friends and family members! read more

This company subcontracted an installation of solar panels. This went fine, but several months later the subcontractor called and came out to fix a problem they were monitoring ... a plug was not connected. I get my PG&E True Up bill and it's a whopping $2,400. The subcontractor says I needed to talk with Efficient Solutions (after many a a half dozen phone messages left with them). It took several voicemail messages and finally I spoke with a rep at EES. After a month of no more contact, when I finally reach her after several more messages, she tells me the owner, Bill, will talk with me. That was two months ago. I finally reached Bill just now after several messages, and things got heated because he said I had been talking with the wrong person. He then hung up on me. Maybe this company is a scam, maybe not. Whatever is going on, Bill needs some help. And I need an attorney. read more

On time with my appointment, Daniel my energy consultant was courteous and informative . He took his time with my wife and I and even joked with my 6 year old. He went over different options for A new heating and air system for our home. I highly recommend Dan and his team for all your home energy needs! By the way install went great and we are warm and cozy! Thanks guys read more

If you want your home remodeled for a very affordable price get in contact with Michael Vanhoute he will make it happen and on top of that you will see the savings in your energy bill. read more

When these people called me I refused their services and asked that they not call me again. They then called me several racially biased profanities. I hung up. They called again, and again and again. Do not do business with this company read more

This company has phenomenal customer service and they do great quality work for very fair prices I would recommend efficient Energy Solution to anyone of my family and friends read more

I don't know exactly what sort of scam they are running, but I'm pretty sure it is a scam. The guy who came over to give me an estimate on replacing some windows in my apartment building only spent a couple of minutes preparing an estimate, and then he tried to get me to agree to a loan with someone he called on his cell phone. When I said I wouldn't agree to a loan unless I saw the details in writing he got out of here real fast. Very fishy. read more

Great company does high quality products for a reasonable price. BILL the owner is a really nice guy he has a lot of expierance and can help you figure out what will work best for your home. read more

Doug Kueppl is the guy you need to talk to at Efficient Energy Solutions . He is a 5 stars all around. Thank you Efficient Energy Solutions for your service . read more

Wonderful job done by these guys they came in and got the job done. We had an mini split put in our home for heating and cooling.. So far it's the best thing going when it comes to heating and cooling... Energy saver a plus read more

This company installed solar panels on my home. They told me that this system would completely offset my energy usage. It does not. They told me I would be making more energy than I use, and would be selling the excess back to the electric company. They lied. My first true up with SMUD was over $700. They told me that instead of paying an energy bill, I would be paying for my solar panels. I am currently paying a large electric bill, and also paying for the solar panels. They never determined my energy usage, so how could they correctly size my system? They couldn't, and they didn't. This company installed a very small system on my home for a very big price. When I questioned the salesman about the small number of panels, I was told that these are the new high efficiency panels and I won't need as many panels as my neighbors home. This system cost me 26,400.00, and three weeks after it was installed I found the materials they used on the internet for 5,777.00. This company told me that the tax rebate that I get would cover part of the cost for this system. The amount I received did not even come close to the figure they quoted. A $920. difference out of my pocket. I have written two letters to this company, and none of these issues were addressed. They simply sent me copies of the forms I signed, (in good faith). I trusted this company at their word, and nothing they told me was true. Nothing. read more

Just got a telemarketing call from these guys. They insinuated that they were authorized by PG&E and Property Assessed Clean Energy (PACE) Programs. I pressed her on what these meant, and she said the PG&E 'authorized' meant they could work on homes serviced by PG&E - but of course there is no such restriction placed on any contractor. The PACE program is something any homeowner can seek - so both these claims were 'come-ons'. I then informed her that the number she called was on the national do-not-call list and she quickly hung up. Deceptive, dishonest, and misleading. Run away from these kinds of businesses. read more

Received a call from a tele-marketer for this company, and when I asked questions about the program he was only interested in setting up an appointment... when I refused, he called me an a**hole and hung up. So, maybe customer service isn't really what they're in business for? read more

I got a call today (10.23.2015) from this company, the woman I spoke to was reluctant to give her name, finally gave it as Shelayne (I'm not sure of spelling) and hung up almost right away when I insisted on getting her name. The stuff she said at the beginning of my conversation with her sounded legit (about energy upgrades to my home, etc) but I don't think so. I am also pretty sure this is a scam because the Caller ID phone number was faked I'm pretty sure ... looked like a local number but I am pretty sure it was not. She did give me the name of the company, allowing me to verify that this is not a company I want to do business with. read more

They called three times in 5 minutes. It seems to be yet another contractor engaging in mass illegal telemarketing.