This was such a positive investment and experience. Professionalism from the start of the process…read morethrough finish. Alfredo and his assistant came to my home in Willow Glen and performed a full evaluation of where the energy loss was coming from and what options I had to mitigate it. His report was thorough and I liked that he prioritized what I need to do right away and what can wait. Alfredo had a call with me to go over the results of the various tests that were run and made sure I understood every detail. Very happy I engaged them and I am looking forward to having warmer winters and lower energy bills

Several years ago, we had our first HERS test performed by Elem3nts - and no surprise, our 40 year…read moreold ducts were leaking badly. Fast forward to the present, the HVAC company we selected for a new heat pump and ducts uses Elem3nts to do the required HERS testing AND handle applying for the homeowner's rebates from Silicon Valley Clean Energy and TECH Clean (very convenient). The entire process was smooth - quick and painless. The Elem3nts team was on time, professional, and left the house just as it was after they were finished. They're very experienced and knowledgeable about HERS testing. Communication around scheduling was excellent, and one rebate has already been received and the other is on its way. Elem3nts has been great!

We highly recommend Innovative Energy Solutions HERS Testing. They were referred to us as the best…read morein the industry. From the start, we experienced and felt valued as a customer. We were impressed with Bryan's outstanding professionalism and excellent skills. We immediately noticed his sincere interest, dedication and integrity with regards to resolving any concerns that we had. He was also punctual and very neat and clean. So, it is with sincere pleasure that we would like to acknowledge and commend Bryan for providing us with the very best service. His work is impeccable and exemplary. Katie, at the office, also kept us informed every step of the way. She has impeccable business etiquette, listening skills and professional decorum. We continue to be very grateful to both Bryan and Katie for their time and assistance. You can rest assured that they are a refreshing asset to their industry.

Even 100 stars could not do the justice to what a professional, efficient and caring service that…read moreKatie and Bryan provided: 1. Katie immediately answered my first phone call, explained HERS and the entire process to me, with a super reasonable quote; 2. From the moment I decided to work with them, Katie sent me texts and emails with appointment schedule, and straight forward guidance of CalCERTS registration and reports; 3. The certified validator Bryan arrived on time, with needed equipments and tools, and was VERY POLITE and RESPECTFUL of our property. Just as much as Katie does, he cares about his customers. The HERS testing went so smoothly and professionally. Bryan explained the policy limit of inflow/outflow efficiency ratio must be less than 5%, and we passed. Bryan left passed 12pm, by 4pm the same day we received CalCERTS official report and certificate in our email from Katie. From my first confirmation with Katie, this HERS testing project was done in less than 3 business days! It could be done in 24 hours but I would not be home that time so Katie coordinated per my schedule! After 1.5 years working on a (still ongoing) house addition&renovation project and experiencing so many headaches caused from unprofessional (and/or greedy) contractors, Katie and Bryan are definitely THE BEST. If you ever need HERS testing in Bay Area, please, support honest and great people like Katie and Bryan!

I can't recommend these guys enough. Huge thanks to…read moreAlberto's team for doing a very thorough job.

Earlier this year I hired Eco Performance Builders install a new heat pump system, remove my old…read moregas furnace, relocate equipment into the attic, replace all ductwork, remove existing attic insulation, air-seal the attic, and eventually reinstall insulation. The experience was outstanding from start to finish. What really set this company apart is that they actually performed proper Manual J load calculations to size the system--something almost no other contractor I contacted was willing to do (load calculations are code required by the way). Every other quote I received assumed a system size based purely on square footage and would have resulted in a dramatically oversized system. Instead, this team took the time to measure, assess, and design a system tailored specifically to my home's demand. They even performed a blower door test to quantify air leakage--another thing no one else offered. As a result, I ended up with a 2.5-ton heat pump. Meanwhile, all other companies wanted to replace what was there (4-ton) or go even higher (5-ton). One company wanted to put in a 100k BTU furnace which is absurd. Their design work was thoughtful and meticulous. The Manual J and Manual S calculations they did ensured that the system was sized properly including duct sizes and lengths. They showed attention to detail with locating and aiming registers to reduce duct lengths (less energy loss due to being in the unconditioned attic) and to improve comfort (limiting air blowing on you in bed). They also took care to locate the ducts so they can bury them in the future attic insulation as much as possible. The on-site crew was excellent--friendly, respectful, and professional every day. They kept the workspace clean, coordinated work around my partner's daytime sleep schedule, and were incredibly flexible with scheduling overall. I've had to push back adding attic insulation multiple times so I can do a few attic projects first, and they've never complained or made it an issue (I still am not ready and they are fine with it). The resulting system has been working great since they installed the heat pump and air sealed in May. The system is basically silent and my house has been quite comfortable. I'm pretty sure the system has been more efficient than my old furnace based on my energy monitoring system that measures current to the unit and PG&E bills from last year, and this is without attic insulation. Regarding cost, you would think that EPB would be significantly more expensive especially considering they will do the proper design work. However, I got a few quotes additional quotes and EPB actually end up significantly cheaper than all other companies that didn't include any real design work! In short, this is the only company I found that actually does things the right way, prioritizing proper design and customer satisfaction. I thought this would hurt the bank but it didn't. I'm extremely happy with the results and would recommend them without hesitation.

I needed a HERS test for SJ permits. Revolution Energy was easy to schedule, fair price and great…read morework. Highly recommend!

Louis was so kind to schedule my duct pressure test on Saturday since I work 2 jobs. He arrived on…read moretime and was so professional. He inspected my system then said he didn't think his test would find anything but I wanted him to do it just for peace of mind because the result would help me know next steps toward solving my issues. He confirmed that my duct pressure was excellent then recommended that all of the duct openings be sealed with duct tape, a proper drain be installed under my home for the condensation that was just leaking onto the plastic liner under my manufactured home creating a stagnant pond under my home and I was smelling it because it was leaking into the open gaps around each of my vents. I have contacted an HVAC company who can complete the work for me. I would most certainly recommend Louis to my friends and family in a heart beat.

Kevin Estigoy came out to do maintenance on my mini-split air conditioner. He was a famiiar face,…read morebecause he had done the maintenance check on my wall heater last Fall. He is very personable, and asked if I had any questions. I mentioned that when I first got the mini-split, I thought I could feel cooler air in the back of the house, even though the mini-split is in the living room, in the front of the house. He showed me how to manipulate the vanes, and set them for me, and while he was doing his tests, I could feel the air flowing in a back bedroom, so that was a real plus for me. He also showed me how I could manipulate the vanes and make changes if I wanted to. So I considered him an excellent service provider. I like that AIS has a maintenance program, which you pay for annually, to get service on both heat and air -- They always contact me when it's time for my prepaid service, which is great, because I would probably forget about it without that reminder. I also appreciate the fact that they text and email to confirm your appointment, and also to let you know when the tech is on his way. This is very helpful...

They came gave a great and thorough Diagnosis. Turns out…read morethat the my AC fan motor was bad. They asked if it was still under warranty and offered to either replace it themselves or go with the manufacturer's warranty which i did and it saved me alot of money, even though it meant they wouldn't get the job. So I appreciate them being honest and doing a great diagnosis.

Brandon spent 30min of his time explaining the details of the HERS testing, what is in the scope…read moreand not in scope. Also he took time to listen to my problem (concern about condensation and moisture) in the HVAC in a brand new home. Based on that he gave me concrete advice to 1/ get the HERS data from the builder 2/ work with an HVAC contractor to inspect select areas (joints, metals, drainage). I had earlier made up my mind on doing the HERS testing, so really appreciated Brandon's time and advice to focus on the right areas. Thank you, Brandon!

Brandon was helpful and considerate with his time explaining HERS testing to me, a prospective…read morecustomer. He is very knowledgeable and eager to share his knowledge when asked. Brandon is a solid professional and a good choice for a HERS rater.

First off this a a very professional company and they are very straight forward. Clearly explained…read morethe process and used quality equipment. They were efficient and knew their craft. I got quotes from many companies and they were ready to work and no nonsense.

This company is a full on SCAM! The owner is a lier and so…read morenot professional. I would not recommend. Not honest workers and very unreliable. Deserves 0 stars Other companies are honest and truth telling but this guy is scammer

We were referred to this company by multiple HVAC contractors because they supposedly offered…read moreblower door testing. We paid for a Manual J calculation and a Blower Door test to determine the correct heat pump size for our home. Two technicians came on December 16, 2024, and the inspection lasted about 30 minutes. During the visit, they were courteous and professional and promised to provide: * A list of heat pump vendors * The proper heat pump size * Recommended installers On January 4, 2025, they sent us a BayREN Home Energy Audit report, but it wasn't even for our house. The report falsely stated that we had solar panels, which we do not. We immediately reached out to correct the discrepancies and request the Manual J calculation and heat pump recommendations we paid for. Since then, they have given us nothing but the runaround. It is now March 28, 2025, and we still have not received the services we paid for. Despite multiple follow-up emails (at least six or seven over the past few months), they continue to delay and have not provided our Manual J calculation, heat pump size, or vendor recommendations. I'm giving two stars because the technicians who came out were friendly and professional. However, the company's follow-through has been terrible. I agree with the other reviewer who warned not to pay them upfront--as soon as they cashed our check, they disappeared. Avoid this company unless you want to waste your time and money.

Mickey was able to handle our inspection very quickly and professionally. Very highly recommended…read more Thank you Mickey!

I have had to deal with a number of people during my home remodeling project. John was far and away…read moreone of the most pleasant experiences I had. He is on time, very fairly priced, competent at his work, will patiently explain what he is doing and why if you ask him. We had a slightly sticky situation in that the contractor who did the ducting was not familiar with the new HERS process and how to navigate the online forms. John worked with him to take care of everything. Not just an super-competent inspector but a very decent person.

I had my heating ducts replaced by a heating company not Simple Home Energy. The the new ducts were…read moretested by Simple Home Energy. I highly recommend this company. Very professional and polite. I felt from the moment he (John) arrived that he was very honest. His testing equipment is very high tech and provides very useful data. The first test failed the code and as a result the heating duct company came in a fixed the problem. John (of Simple Home Energy) contacted the company and suggested to them what was wrong with their installation. Then he suggested that the repair person be there when he retested the system. It passed the second time.

Our HVAC contractor set us up with Calraters to inspect our newly installed system. We worked with…read moreAbdul who was great throughout the process. He was friendly, prompt, and helped to explain what he was checking during the inspection. Would highly recommend.

Jon from CalRATERS did our duct testing and energy audit after we installed new HVAC systems. He…read morewas professional, efficient and friendly. He kept us informed all along the way. I would highly recommend CalRATERS. Good job.