These are good guys. They are fully capable of repairing my a/c and heating systems, and since they've been performing my annual service on them, nothing has gone wrong! I highly recommend them. read more

It seems as though every visit from All Phase sends me back to Yelp to sing their praises. They are the model of the perfect local business: efficient, trustworthy0 and ethical, and loyal to their customers. We're lucky to have them in our community. read more

We have worked with All Phase Heat & Air Conditioning on several projects over the past year, and we are pleased to give them our highest recommendation. Each project was completed on schedule and exactly as agreed upon. Their team consistently demonstrates professionalism -- they are respectful of our homes, communicate clearly, and take care to clean up thoroughly after each job. Most importantly, the quality of their work has been exemplary. The systems they've installed have performed reliably and efficiently, meeting or exceeding our expectations every time. It has been a pleasure working with All Phase, and we look forward to continuing our partnership in the future. Sincerely, Theresa Tilly R & D Holdings Nevada LP read more

Efficient, professional and personal installation of my new HVAC system. And I appreciate the regular biannual maintenance program.

This company deserves 5 stars. From getting a quote to the final inspection of the heat pump, everything went smoothly. They are very professional, efficient and reliable. They are knowledgeable about the Heehra and Clean Tech rebates. I highly recommend them. A shout out to Brad for giving us a quote and helping with the rebates, and Craig and Tristan for the hassle-free installation. read more

We used to go with these folks for all of our seasonal ac/heating maintenance, but as of recently, they have nearly doubled their prices! I can't justify paying more for the same service, so I DON'Trecommend them and suggest one of the several other options around town that come in at a far better price. You have lost this long-time customer, and I'm sure many others will follow due to your heavy price increase. read more

Great communication and service! They followed through in all areas. Highly recommend!

Singing The Praises of All Phase Heating and Air Conditioning ! I scheduled the required five year deep clean and maintenance on my Fujitsu air unit. All Phase sent out a new hire technician who thoroughly acted it up. He ruined the main circuit boards and damaged the closet door that was right below the unit with excess water. Anyway, the unit was broken. I called All Phase this morning and they sent out their best guy, Chris, who worked here all afternoon. He purchased a floor air conditioner for Hill Top, so I can remain comfortable until the replacement parts arrive. All Phase is refunding me the maintenance fee, paying for the parts, and replacing my damaged door. Full apologies and no questions asked....BTW the new technician has been let go. It's going to cost All Ohase over a thousand dollars to get it all back in order. Just want everyone to know that the company had someone out first thing and stood behind their work. And Chris is a most skilled and delightful man! read more

I continue to use them because they are simply the best From Sarah the office person to the technicians they send - to me the next local HVAC company around read more

Our A/C started going off and on, trying to put out cool air but no luck. We decided it was best to shut it down and place a service call to All Phase. We were having triple digit heat and were in real need of service. I called at 1:04 pm on Tuesday and had the technicians show up at 1 pm that Thursday! Sheldon the lead tech had been here before and I was feeling good. He and his partner got right on it and had the issue resolved in less than an hour! No parts were needed and the charge for the service was more than reasonable, especially for 2024. I highly recommend All Phase and should another issue arise I will gladly call them again for service read more

Found out that there was a leaky valve in our indoor heater. All phase was able to come out and repair it 2 days later! They were honest, courteous, and communicative. They even sent us a video showing where the problem was. So thankful for them! Thank you Rich! Great technician! read more

I can't say enough good things about my entire experience with All Phase. From the quote process all the way through the demo of my old system and installation of the shiny new one. And clean up? Wow. Tremendous! I write a lot of reviews on Yelp. I can't speak technically about this sort of thing but I did my research to know that the equipment is top notch. Then to me I need to have a good feeling about the company before I hire them. You'll get that with All Phase. I didn't mind writing the check at the end. read more

See all

I hired All Phase nearly two years ago for 2x per year maintenance of HVAC systems. Their service people are sharp, prompt and friendly. They offer tips so I can help with maintenance between their trips. To date they have not generated ANY recommendations for additional services -- i.e. additional billing - which is so common (think about your recent oil change and what other services were suddenly 'needed!' lol) Highly recommended. read more

Excellent experience with All Phase. Jacob and Colin just completed the install of a heat pump to replace our old Furnace/AC combo unit. System was fully tested and is working perfectly. The initial Sales experience with Brad was extremely professional and enlightening. The Installers (Jacob & Colin) were on time, friendly, courteous and well prepared. Fantastic company and employees, I highly recommend !! read more

We have had two contracts with All Phase. They installed a mini-split heat pump system in our guest house. Fair price and pristine installation. Also, they came today to troubleshoot a noisy HVAC motor. It is an old-fashioned electric motor with unsealed bearings. After inspection the tech determined that all that was needed was oil lubrication of the motor bearings. Another contractor wanted over $10,000 to pull the unit and repair. All Phase will now be our only source for service. read more

After getting proposals from local vendors, we hired All Phase to replace our propane house heater. They did an excellent job prepared the most complete proposal in a timely manner. They were very professional and the installation went according to plan. We have since contracted them for annual inspection and maintenance of both our heater and our evaporative cooler. We are very satisfied with this work as well. We would recommend All Phase for heating and air conditioning without reservation. read more

Brad arrived to give us an estimate. He took considerable time looking at our old units and when finished handed the paperwork to us, then and there. My husband and I looked at it, looked at each other, and without hesitation accepted All Phase's offer for two new furnaces and two AC units. The installation crew arrived in approximately one week. The technicians took great care while working in our home and were respectful at all times. Not to mention friendly, considerate and obviously very competent at their job. My husband is an engineer, machinist and lifelong do-it-yourselfer. He built his own home, from bottom to top, before I met him. This is the first time he hired someone else to do the job. We both were very impressed by the quality of the workmanship. They could have used some of the old sheet metal and insulation, but decided to replace it all. The final result was excellent, and beautiful, I might add! One of the old furnaces had failed during cold weather and we were concerned being without heat for an extended time. But, they got the job done very quickly. The new installation was completed in 2 1/2 days. We would like to thank Brad, Craig, Tristan, Chuck and the office staff for their support - their paperwork was spontaneous, and, we had our final inspection signed-off a day or two after the job was completed. All Phase surpassed our expectations. They are true professionals. We could not be happier! read more

All phase was suggested to me and I'm very happy I went with them. They were able to schedule my checkup on new house quickly. Gave me a fair price and schedule for a new A/C unit. When some vibration noise creeped in, after install, they came out twice (one to investigate and one to solve) with zero pushback or issues. The install crew was very friendly and made a long day easier, as have been all the rest of the crew that I've met. I would happily recommend them and happy to discuss further, should All phase want a call. read more

After having All Phase out for a few service calls for our old HVAC unit, we were expecting nothing but the best for our new unit sale and installation. And we were not disappointed. Efficient, friendly, clear instructions, a beautiful unit, and everyone involved in the installation were fantastic. We couldn't be happier. Thank you!!! read more

I had a home with central heat but no air. All Phase sent out two technicians and they put the unit in with an hour! They also did a follow up and maintenance. It has saved me so much during the heat of the summer. I recommend them highly! read more

Simply the best. The most competitive bid (factoring in cash discount, same $ without) and literally 1/2 the amount of the high bid who I consider crooks. All Phase from start to finish shined and their front office is a dream to work with. The team that did the work was phenomenal. You just can't go wrong with All Phase, I referred some friends, and they completely agree with me after their install. read more

Brad organized the replacement of our old 1980's unit into a beautiful new energy efficient unit. He reviewed every detail from beginning to end making sure we were happy with the results. We were hesitate about purchasing the higher end model, looking back we are so glad we did! Jacob and Brett installed everything and went above and beyond. They found things which needed to be repaired with our outdated venting and fixed promptly. The air in our home during the past smoky fire seasons have been unbearable and now I have peace of mind knowing my family can breath with our new system filtering everything and keeping us safe and healthy. My family can't say enough about this group. My only regret is that we should have used All Phase years ago. read more

All Phase Heating & Air Conditioning - All Phase removed our old 1980's unit which took up an entire concrete block, replaced with a energy efficient top of the line unit. - Heating & Air Conditioning/HVAC Near Me - Grass Valley, California

We had them out a few times to service our old system and finally got a new HVAC system. After two different bids from others, All Phase came out on top for the following reasons. Their professionalism, explaining and addressing all our questions going from a 25 yr. old system to a new Bryant Evolution furnace including an Aprilaire air cleaner and their price. We are amazed at how quiet the system operates. A few months ago, we had them out re water on the platform which shares a hot water heater. Jacob and Brad came out, did a thorough inspection, worried something was going on with the condenser. Discovered the water heater was the culprit. They went beyond the call of duty and helped us discharge the water heater, made sure everything was safe and in working order. Thank you, Brad and Matt for your attention to customer service. A rare commodity. read more

My house was built in 2005 and All Phase installed the heating and air back then. I bought in 2015 and have used them for maintenance ever since. Then just recently our air went out and we needed to replace the whole unit. Their service was excellent and pricing was very reasonable. Would use them again and again. read more

We are big fans of All Phase, they have been the go to company for many years. Honest and efficient. Thank you, All Phase read more

We had our annual furnace inspection in November 2021 and our furnace and AC were declared dead. We had several companies come out to take a look at the system and give us a replacement quote. All of the companies that came out were credible, but after speaking with a friend who installs HVAC in another state we decided on the Bryant system installed by All Phase. We were happy with every aspect of All Phase from the initial sales call to the onsite visit and through the installation. The price was exactly what was quoted and everyone showed up when they said they would. We highly recommend! read more

They're good people and the service people are on top of their game. I've been very happy with the HVAC system they installed for me 7 1/2 years ago. However at start of the triple digit heatwave, they could not get to me for 2 weeks plus. I wish they would have told me they had Saturday techs available when I originally called the week before so I wouldn't have have sweltered for an extra week. I wouldn't have minded paying extra for Saturday work under those circumstances. But having waited that extra week I'm not feeling so good about it. I had you in for preventative maintenance in May, 2020. Can you apply the 15% repair discount you show in your website? I listed four stars but maybe kind of four star minus (3.8) because I sweltered for a week and I have health issues. read more

All Phase maintains my heat pump air conditioner twice a year. They change filters and check ducting. It has worked perfect every since they started maintaining it. I highly recommend them. read more

The technician did an excellent job of checking our system over and identified that we might have a leak. The office kept us informed of arrival time and scheduled a revisit to see if they can find any leakage using a bluelight with the previously injected dye. He did find one connection that was slightly loose which he tightened. So far a positive job. read more

The air conditioner in my parent's house stopped working and I was able to make an appointment to meet with a technician on a day that I was in town. He arrived exactly at the stated time. I explained what I thought might be wrong. He said "Let's take a look" and did a few tests. When I told him that the unit had been covered and possibly turned on with the cover on, he located a button to restart the air conditioner and it started up. He checked the freon and said it was slightly low but the cost to fill up such an old unit wasn't really worth the cost. Just charged me a service charge and we have been good since. Will definitely use All Phase again for any heating or air conditioning needs. Great service! read more

I have used All Phase Heating and Air Conditioning for many years now. They are extremely reliable, know their business well and have THE MOST courteous repair people. I cannot recommend them enough. We have had nothing but great experiences with this company!! read more

Wonderful customer service, professional responsive repair/replacement quotes and highly trained staff that explain what is happening with your system and what they can do to get you working home heating and refrigerated air conditioning. If you purchase a replacement system, I recommend that you include a winter/summer on-site maintenance contract to prioritize the All Phase Repair Team response, providing factory OEM replacement parts carried on their trucks and reduced parts replacement costs. Don't delay..they are honest and a local Grass Valley Business that really cares!! read more

All phase is my go-to for my bi-annual heating and air maintenance at Ember Salon in Grass Valley. They are so good about scheduling me in advance for the following season, coming when they say. They are efficient, professional and reliable. Thanks for keeping my business and my clients warm in the winter and cool in the summer. read more

Great technician, very friendly, on time and affordable. I will definitely be scheduling them for all my hvac needs.

Unbelievable and wonderful experience. Exceeded our expectations. After a bad home warranty company experience who couldn't fix our a/c unit and cancelled all the time we called All Phase. They provided a same day appointment, troubleshot and repaired the unit in 3 hours. Service call, parts and labor $368. Done. A/C working after 6 weeks of frustration with the home warranty company's contractor. Highly recommend All Phase. Nice people too. read more

So they came out to my Mom's house and left a HUGE hole in the side of her house. And now she has a huge rat problem And then on top of her grand bill she has to pay for an exterminator to come out. So unprofessional and totally out of line. A well deserved one star. read more

We had an outstanding bill with All Phase and there was a mix up as to should be paying the bill, the landlord or us. Then we had a propane smell. I was very concerned about it and call All Phase. They refused to come out because of the unpaid bill. I was shocked that a safety issue was ignored. They have always be great before. Maybe it was someone new who answered the phone. We have been a customer of theirs for over 10 years. With that being said, I cannot provide a great review as requested. The issue did turn out to be our propane ran out which was discovered by Suburban, who quickly pay attention to our call. It is not a trivial question when you smell propane inside your place of business when considering the safety of your employees. read more

After recently moving to Nevada County from San Francisco, we were thrilled to enjoy our first summer in the foothills and bask in the heat of the days. What we weren't ready for were relentless scorching nuclear rays that decimate all carbon-based material from June-August and parts of September. In a nutshell, we weren't ready for the heat! But we had a monster A/C unit in the house which would definitely keep us comfortable, right? Wrong. For starters, our AC unit is medium-sized and serves our home of roughly 3,300 square feet. It functions normally, was built installed in 2014, and for all intents and purposes is OK. When it kicks on, our property experiences a dramatic home-dimming draw of electricity before banging on to loudly forcing air all over the place. It sends dust flying and ensures to suck all of the animal hair and dust near the intake vents to clog the air filter and send throughout the rest of the home. At roughly 33 amps, it's either ON or OFF and when it's ON it's absolutely decimating our wallets, consuming nearly 7kw per hour. During the day at $0.47/kwh, the AC unit alone costs us over $3/hr to run. Want to stay cool all afternoon and into the evening? That'll be $20/day, please! Even when we were hyper-conservative with our use, we still had electric bills over $600. WTF. What's worse is that the HVAC blew cold air wonderfully near the main ducts close to the unit, but as one travels to the further reaches of the home, the air piddles out of the registers and only a faint temperature difference can be noticed. On most nights, our master bedroom remained over 80 degrees inside, without the ability to do more than move air around from a space fan. So we were paying to cool air ducts and unoccupied rooms. And for all the loss. The LOWEST our home was able to reach in the hot summer days was around 82 degrees. That's with all cylinders firing on the HVAC unit... After two months of this nonsense, being uncomfortable/angry, and sweating through our sheets each night, we decided to call All Phase Electric on a recommendation from Precision Electric (Thanks Rachael!). It was probably the best call we have made in 2018 and remains so to this day! Brad came over and assessed our situation within days, and was able to recommend an expandable system within weeks. In addition to the temperature difference being night/day, we no longer had earth-shattering kicks form the AC unit and flurries of blustery air all over the house. The units now maintain constant temperatures in each zone and run quietly. In terms of electrical load and efficiency, these things are a sea change from our old forced air system. Our current system is a three-zone setup which services 5 rooms but helps with other surrounding ones without the wall units. We've got some medium-sized units in the bedrooms and a larger unit in the common area connecting our kitchen, dining, and living rooms. The new system **actually cools and heats the home*** and the condenser outside runs much quieter than our old system, even at full blast. But most times of the day, the fan runs so quietly I don't hear it unless I'm outside and near it. The rooms each run very quietly as well. Which is great for young sleeping children. It also runs by zone and doesn't rely on one thermostat in the hallway. Each zone maintains itself and can "connect" with other zones simply by opening doors to rooms/bathrooms that aren't serviced directly by wall units. And through all this, the system is 100% electric. No propane, no natural gas. This means that when heating our home, we're not paying $1.50+ in propane to heat the house. Which means our tank lasts longer and doesn't need to be filled during the peak winter season (with peak prices). The electrical consumption? Incredibly low. Whereas our old system would run at ~7.9kw - ~9.5kw when cooling and ~1.8kw when heating, the new system averages ~800w - ~2.5kw for both. And when it runs like that, it runs for under 5min. Our old HVAC could take 15-45min to set the temperature for one cycle. Then, minutes later, it'd kick back on again for another 15-45 min! Never again... Clearly, these things have changed the way we look at HVAC systems and the fact that they're all-electric allows us to directly benefit from solar, home battery storage, and better overall efficiency (and comfort!). Thanks to Brad and his team at All Phase for their incredible recommendations. We'll be back if we ever expand our system! read more

We have had All Phase inspect our home HVAC twice yearly for 10 years. They are always on time and courteous. And, they always clean up after themselves. Our AC failed at the height of a recent heat wave. They got a tech out in three days... faster than I expected all things considered. The blower motor was replaced on the spot. The cost was more than I had hoped for but research showed it was reasonable. I highly recommend using All Phase. read more

After a power surge, rain and snowstorm, internet outage and Covid...our heater quit working. I asked a couple of friends who I should call and both of them said I should call 'All Phase'. I called and they were able to have a repair person to our cold home the very next day. The person who came to our house was very professional, knowledgeable and friendly. He wore booties so he didn't mess up our house. He fixed our problem within minutes and explained the benefits of their regular maintenance program. We signed up and he serviced our heater on the spot. Now we have peace of mind for our heating and cooling units for the next year's maintenance. I highly recommend All Phase. Tim Snellings read more