I can't say enough about the service from Mark. He showed up at the appointed time, he diagnosed…read morethe problem quickly. He needed a part and quoted me a price. The next day he fixed the problem and I was surprised at the very fair price I was charged. Great service and a wonderful personality.

Mark is great! This is the only place to call for HVAC assistance of any kind. Installed a…read moremini-split in my home. Fantastic job, affordable, professional.

Our AC went out on Saturday 10/21. The technician came out, diagnosed our issue, charged the…read moreservice charge, and told us he would call us Monday morning right after he contacted the warehouse at 7:30am. We did not receive a call and had to call twice on Monday just to be told that the part was on back order. We called again on Tuesday morning and were told we would receive a call back as soon as the technician came back from doing an estimate. We finally called them back at 2pm and were told there was nothing they could do and they couldn't make any decisions on fixing our unit. The person was very uncaring and very rude. We requested a call back by noon on Wednesday, 10/25, and it is now Friday, 10/27, and we have not been called back. Thankfully, we talked to another company, they called the same warehouse, the part was in stock, they fixed our AC this morning, and charged us less than what All Weather was going to gouge us for. We feel we were jerked around and lied to. Terrible experience with a company that obviously has no customer service skills and can't make any decisions on their own. We will not recommend them to anyone.

My 91 year old mother in law's furnace went out this morning. I called All Weather this morning and…read moreleft a message. My message was returned promptly. A technician service call was set for somewhere between 12 and 4. Well, they called at 11:30 to tell me they were on the way. When they arrived, within 5 minutes had determined the problems. They fixed everything in 15 minutes. This was one of the best experiences I've ever had with a repair. Very reasonable cost. I'm planning to arrange a service contract with these guys. And, most importantly, I got major kudos from my sweet mother in law.

KC has performed 2 plumbing jobs and 1 major HVAC job for us…read more They are the most professional and friendly company I have ever worked with. Every single technician is polished, polite, communicative and knowledgeable about everything they do. I will always call them for any issues. I strongly recommend them.

This time, KC installed a ductless heating and cooling system for me. Now that it's installed, I…read morehonestly don't know how I ever lived without it. A very worthwhile investment. KC service was stellar as always. The system is so beautifully installed, i could swear that the side of my house where the outside unit and various hidden cables and pipes are looks better now than it did before. A work of art! Many sincere thanks to Mike Anderson and Caden Hutman. The project manager Virginia was wonderful to work with as always and very easy to contact when needed. I couldn't be more pleased.

Hulbert had our furnace up and running in no time. I also didn't feel like I was getting any…read morepressure to buy a new one. Very positive experience.

If I could give this company 10 stars, I would. Doug replaced my furnace system a couple years ago,…read moreand I was delighted with the furnace, his recommendations for what I needed for my house, and the quality of work for the installation. It was a difficult site, and other companies were reluctant to install, but he did it with ease, good humor, and with great efficiency. On another occasion, I wrote to him about another furnace issue and he was responsive and gave me detailed advice, even redirecting me from paying him for a service he felt wouldn't actually solve my problem. In this day and age, when finding high quality and ETHICAL, RESPONSIVE and PERSONAL service is so rare, this company stands high above the rest.

This company is the best in the business, truly. They treated me like nothing less than family and…read morefixed my heating system that hadn't worked in over 3 years at a very affordable price. I made the mistake of paying an unlicensed guy to do my Install initially, a friend of a friend. And he didn't know what he was doing. Wasn't sure they'd ever work and didn't trust anyone else to repair it with the prices I was being quoted (literally thousands). They're not out there charging an arm and a leg like every other HVAC company in Sonoma County. They're taking care of people first and foremost. I'd also like to add that they came out almost right away and made my repair a priority. Financing was very easy too! God bless them. Thank you Jerome and the whole team there. Can't thank you all enough and can't recommend you enough either

I'd highly recommend HVAC Essentials. We turned on the gas furnace a few weeks ago all we got was…read morecold air and it wouldn't shut off. HVAC Essentials came out immediately and checked it out. The first thing they found out was the insulation was installed right up next to the furnace creating a fire hazard. Since the problem was intermittent, it took a couple of visits for them to figure out the problem. They came out promptly every time and figured out the issue, which was an electrical short. I will call them again if I ever have a problem.

NorthBay replaced my furnace and hot water heater with new heat pump versions. They were very…read moreprofessional, on time, and over delivered on what they promised. I whole heartedly recommend them!

I hired Edgar to re-install an AC unit after it had been disconnected. Edgar did a great job and it…read morewas affordable. I would definitely hire him again.

June 3, 2026 Today, Lucas came out to do a routine maintenance check on the heat pump that Henry…read moreMechanical installed several years ago. We have been super impressed with the excellence of the units they've installed for us, as well as the diligent, expert technicians they have sent to us over the years. Lucas spent a lot of time with us, explaining various things we asked about. Unexpectedly, he really helped us out by installing a new laundry room fan we had picked up to replace the old one that had fallen from the ceiling. Helpfully, Lucas pointed out that our attic has no fan to pump out excess heat (and it gets hot in the summer!!) He promised to send a quote immediately. We were delighted with his service and awesome communication skills. Lucas is a super star!!

It was expensive. However, the crew that installed everything was professional and efficient…read more They finished on schedule, kept me updated, consulted me regarding all changes, and -- awesomely -- cleaned up after themselves. The end result was a beautifully installed, high end system, that works far better than it's predecessor. Pleased with the quality of work, the furnace, A/C, and new ducting.

This one is a bit late. After dealing with non stop unprofessionalism and nonsense from our…read moreuseless warranty trying to get our furnace fixed in the coldest months of winter freezing in our house. Once they attempted to install the wrong one twice enough was enough. We finally had the pleasure of meeting Michael and his team as we needed a solution. He not only told us exactly what we needed and super friendly and beyond professional the entire way. His dedication, care, and love for his craft was shown in more than words. He was on time, got us what we needed and did an absolutely outstanding job. By far the best contractor I have worked with since owning a home. They not only did the work properly he pointed out all the errors the other company made and educated us along the way with absolutely zero pressure and just what we needed and could afford. You don't find contractors like this everyday, our house now has a proper heating system that works perfectly. Once we can, gonna have him do our AC as well. If you need any HVAC work done, look no further he is the best in Sonoma County. He and his team truly go above and beyond for his customers and it shows. I would give him and his team the highest recommendation for anyone needing any HVAC work done. 10/10.

At first, when I saw this company had only (1) five star overall rating, I was a bit hesitant to…read moremake contact. Although, his timely response is what encouraged me to follow through with my gut feeling and gave a response to schedule. I'm truly glad I did. Michael (owner) communicates well, gave me an honest upfront explantion of the most common causes for a Carrier system that was only 6 years old. I felt very comfortable with his assessment and he did not try to add any unnecessary services He conducted an entire inspection for our HVAC system (heating/cooling/indoor/outdoor) and diagnosed the issue to a faulty disconnect fuses. The repair price was reasonable and within my budget. That was greatly appreciated. I highly recommend Michael w/NorCal as someone who operated with honesty and integrity. I will see you in December 2025 for the semi-annual pm as we discussed. Thanks, again.