1. Coast Mechanical

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Atascadero, CA

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Coast Mechanical

5.0 (4 reviews)
Closed • 9:00 am - 4:00 pm

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8 years ago

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3 years ago

Aaron was very helpful in working with us to meet our needs. He was very prompt and his prices were fair.

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Rocksteady Plumbing - Pic is of Kitchen drain line, nearly 1/3 plugged up.

Rocksteady Plumbing

(98 reviews)

Efficient, as usual! Very reliable & informative. Our "go to" company for any plumbing issues. Ha,…read moretruly Rock Steady!

I hired Rock Steady Plumbing to install a Navien tankless water heater on August 10, 2026, at a…read morecost of approximately $6,900. At that price, I expected a professional installation that was completed correctly. Unfortunately, that was not my experience. After the installation, I discovered significant deficiencies that required correction. The tankless water heater had been powered using an extension cord running across attic floor, rather than a permanent electrical connection, and the condensate line had been routed underneath the house, where it was draining into the crawl space rather than being properly terminated outside. I contacted Rock Steady and gave them the opportunity to correct the issues themselves. When the necessary corrections were not completed in a timely manner, I ultimately had to hire another licensed plumber and an electrician to complete and correct the work. The electrician corrected the electrical connection. The second plumbing company rerouted the condensate line from underneath the house and properly terminated it outside. Their invoice specifically documented that they had to plumb the condensate line from where the prior plumber had left it under the house and terminate it outside. To Rock Steady's credit, after I submitted the invoices for this corrective work, they reimbursed me in full for both the plumbing and electrical expenses. I believe that is important to include. However, reimbursement does not change the quality of the original installation or the considerable amount of time and effort required on my part to get the situation resolved. The original installation occurred on August 10, and I did not receive final reimbursement until September 17--more than five weeks later. During that time, I had to identify and document the problems, communicate repeatedly with Rock Steady, arrange for other licensed professionals to evaluate and correct the installation, pay those expenses myself, and then seek reimbursement. I paid approximately $6,900--a premium price for a professional tankless water heater installation. Instead, portions of the installation were substandard and ultimately had to be corrected by other professionals. I appreciate that Rock Steady ultimately reimbursed me for those corrective expenses. But for a $6,900 professional installation, I expected the work to be done correctly the first time. It wasn't.

Advanced Water Solutions - Our great new water system.

Advanced Water Solutions

(167 reviews)

I'll do this review in chronological order. It started with the owner, Jay, coming to my house…read morepersonally to inspect the site and give a quote. He is a very personable guy and you can tell he is a complete water nerd, and that is a HUGE compliment. The man clearly does something that he loves for work. His family heritage is in water business too going back to Wisconsin, anyone from there knows the last name immediately. Fast forward to yesterday morning. Dan comes out to do the install. As you can see in the picture, Dan had to get fancy with the piping because of the requirement to be able to access the fire sprinkler system in the garage. This dude was an absolute artist with his soldering skills. He's definitely a measure twice - cut once, type of guy. Just a master at his craft and nothing less. Additionally, Dan installed a RO system for drinking water under my kitchen sink. We had one but it was from 2007 and we mainly used it for coffee water and dog bowl water because it didn't really taste the best but was safe for consumption so this upgrade was very much needed. My wife got home from work to two cups of water on the dining room table, I didn't tell her which one was which. One was a cup of arrowhead spring mineral water and the other was fron the new system. She was able to tell which one was the new system HOWEVER she said it tasted great and not like the previous system. So now, going forward, we will no longer be buying arrowhead jugs and consuming micro plastics on the daily. Wrapping up: A solid 10 star if I could review of a company. Pricing was fair and customer service through the roof. Very happy they're local too. Highly Recommend.

We recently had a whole house water softner with filtration and reverse osmosis water system…read moreinstalled by Advanced Water Solutions, and we are extremely pleased with the entire experience. Before making our decision, we interviewed three different companies, and Advanced Water Solutions clearly provided the most value for the money. It was absolutely well worth it. Alonso was our installer, and he did a fabulous job from start to finish. He was professional, knowledgeable, efficient, and took the time to make sure everything was installed properly. About a week later, I contacted the main office regarding an issue with the reverse osmosis system. I was very impressed with how quickly Advanced Water Solutions responded. Alonso returned promptly, quickly troubleshot the issue, and repaired the problem efficiently. I would like to commend Advanced Water Solutions for their expedited customer service, efficient response, and excellent repair support. It's refreshing to work with a company that truly stands behind their service and values their customers. This is truly a FIVE STAR Company and I would not hesitate to recommend them if you are looking for water solutions for your home.

4G's Plumbing

4G's Plumbing

(16 reviews)

I had a great experience with 4G Plumbing. Julian arrived right in the scheduled window, was very…read moreprofessional. When he found an issue that needed to be corrected. I appreciated that he explained what needed to be done without putting down anyone else's work. But explaining why it was incorrect. Great communication and a job well done. He even discounted the quoted price after a hidden issue was found that he felt he should have shared prior to quoting. Highly recommended 4 G's.

Summary: An inexperienced technician, followed by an…read moreaggressive technician, followed by an owner who ordered the wrong part and refused to fix the error until it was too late. I still have the original problem, plus a new leak and I'm $1,300 out of pocket. Not recommended. Detail: I hired 4 G's to replace the anode rod in our water heater to deal with a persistent sulfur smell. The first technician didn't have the expertise to install a powered anode, which is the purpose built solution for this problem, and instead asked me to order a conventional rod from a supplier myself. We ordered it together on the phone. When the part arrived, 4Gs sent a different technician, who seemed more competent but was incredibly angry and aggressive from the moment he arrived (swearing, throwing parts around, ragefully hitting his tools, storming around etc). He later explained he was trying to leave town for a long weekend and hadn't expected to be sent to my job but the kid who was supposed to do it hadn't shown up for work. I understand his frustration but it was unprofessional to be so visibly angry in front of a paying customer. Making matters worse, we discovered the supplier had shipped the wrong anode that was ordered with the first technician, so we called the supplier together to resolve it. During the call, the 4Gs technician decided he didn't trust the supplier to get it right and insisted 4 G's order the part directly. I agreed on one condition: the rod had to be zinc or zinc-aluminum, because that is the entire point of the exercise. He told me his boss had "100%" ordered the correct part. Given how many errors there had already been, I spoke with the owner myself, explained exactly what was needed, and texted him afterwards to confirm. He never replied to the text, but the technician assured me it had been handled. The same technician later returned and installed the rod. A week on, the smell was still there and a leak had appeared. I called the office to confirm what had actually been installed: no answer. I called the technician: no answer. I texted him: no answer. Every call, voicemail and text over the next two weeks went ignored. So I held payment until someone would speak to me. The invoice didn't arrive for another three months. 34 days after it finally reached me, they got in touch, and I explained I was happy to pay but needed to confirm the right part was in the tank. By their own documentation, it was a 100% aluminum rod. Not what the job required, and more importantly, not what I explicitly asked for. Rather than offer to put it right, the owner produced one claim after another that none of this was their fault, against invoices, emails and texts that say otherwise. He had even recalled my zinc request himself on the phone when he called about his check. After many rounds of emails he did eventually agree to send someone out, by which point another contractor had already offered to sort it out for me, having heard the story and agreed it was unacceptable. The work was billed in full and paid in full ($1300) because in a dispute like this I'd rather take the high road and keep uncompromised grounds to leave an honest and objective review warning others about how companies like this operate.

Coast Mechanical - plumbing - Updated October 2026

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