Not the company they used to be. It's been 6 months and they have failed to return (as promised) to caulk the floor around the new toilet I paid them $1,400 to install in November. Called. Last email to manager Bradley not even replied read more

We hired Harry Clark Plumbing in June of 2026, to completely re-pipe our 4000 square foot Oakland Hills home with Copper tubing after experiencing a series of leaks from the Uponor PEX domestic water tubing which previously comprised our domestic water delivery system. It was a big job. The Harry Clark team completed the project on time and on budget. We obtained 4 estimates before deciding to go with Clark. Their bid was reasonable and significantly less than the highest bid we received. The Clark representative, Brad Marshall, was knowledgeable and a pleasure to work with. I liked the fact that Clark is a long-time family owned operation. I highly recommend Harry Clark Plumbing. read more

We had a pretty large plumbing/sewer job which was a bit of an emergency. We called another well rated business first and received a quote that felt too high. I contacted a realtor friend and she highly recommended Harry Clark. Not only did they come out quickly, their quote was less than half of the other quote. We hired them and they did a fabulous job. Highly recommend. Honest, decent company. read more

Harry Clark recently did our full sewer lateral replacement and we found working with them an excellent experience! Their staff is very professional, organized, efficient and provided clear communication throughout the project. We will definitely consider working with them again in the future. read more

Ryan did terrific work installing a new Grohe kitchen faucet and soap dispenser in my home. He arrived on time, diagnosed the problem with my old leaking faucet, recommended a great place (Rubenstein's) to purchase new products, returned promptly to do the installation, and checked everything else (hot water dispenser, garbage disposal, etc) to be sure it was functioning properly. He was a great problem-solver when one of the parts of the new faucet didn't work as expected, addressing the issue efficiently to save me money. He was kind, thoughtful, and cleaned up the area thoroughly. I rarely write reviews, but Ryan deserves recognition. Start to finish -- Excellent work! I highly recommend Ryan. read more

I have been using Harry Clark for various heating or plumbing issues since 2014. I have always been happy with my experience and the high quality of work that they do. But yesterday's interaction, when I called to make an appt for a leaking water heater, really rubbed me the wrong way. I called to make an appt to have a plumber come out and look at the leaking unit. Whichever woman answered the phone was adamant about the unit needing to be replaced and they would send someone out to give me a replacement quote. It just felt like a sale push out the gate, when no one had even been out yet to assess or diagnose why it's leaking. I am also pretty sure whoever answered the phone is not a plumber! From my vantage point, I could not describe why it was leaking since the water heater is outdoors in a locked cabinet that I cannot open easily. In any case, not a smart way for whoever fielded my appt call to maintain or establish trust by pushing for a new unit sale without even sending someone out to look at it first. I am not sure if this woman went a little off the call script, but wanted to flag this to the business since customers like myself need to trust their advisors to help us figure out what is actually going on, versus looking to push a pricey new unit sale out the gate. Once that trust is gone, it makes me hesitant to engage further. Don't lose a customer of 12 years due to behaviors like this. All my previous interactions kept your business as my default go-to when I had home issues. But once trust is lost, it's hard to get back. Thank you. read more

Grateful for how HCP made my full sewer lateral replacement easy and breezy. I needed extensive documentation for reimbursement purposes, and their staff was quick and responsive. Thanks all! read more

Called about a heat pump issue. After inspection I was told the unit was old, unlikely parts are available, needed it replaced. When the quote came in at just under $15k (well more than expected) I called with questions. Luckily Brian screened my call for the guy that did the quote, and was... not cool. So I called a different company for a second opinion. Turns out the unit is not old (2021) and there is no sign of the issue they diagnosed. Thanks Brian. read more

Wow! Not a big Yelp reviewer but Harry Clark Plumbing is worth it. I had a 10-year old water heater making booming noises so after some online research I filled out an inquiry on the website and was contacted within an hour and had an in-depth and non-rushed conversation with a specialist about my issue. We decided it was time for a new water heater and they were very prompt and efficient with installation. Definitely a five star business. Recommend! Thank you! read more

We had a low pressure issue with the cold supply line to a new washing machine. Ryan came out and quickly discovered the cause and fixed it. Ryan is professional, extremely efficient and a friendly and courteous person. He also replaced a kitchen faucet a couple of days earlier, which was done efficiently as well. read more

Was very impressed with the work Harry Clark did on my massive drainage repair/install in the East Bay. From day 1, they were easy to communicate with, and the entire project went so smoothly. All told they were here 5-weeks digging deep and installing drains - the guys showed up every day on time, and did just a fantastic job on a major operation. I highly recommend Harry Clark and plan to make them my first call for all my future plumbing/HVAC needs....just a top notch organization top to bottom. read more

Harry Clark Plumbing came out and an estimator gave me an estimate to replace gas my furnace. I compared the price to a couple of other companies on Yelp and their price looked good and they answered my questions. We made an appointment and their team came out and replaced my furnace in just a couple of hours. I got a building inspector myself to come out to give me a permit for the new furnace. The inspector took just a few seconds before signing off on the permit. read more

My condo recently had HC Plumbing out to do a repair in a unit and the HC plumber accidentally cut a pipe. This caused $18K of water damage that impacted multiple units. HC plumbing admitted to cutting the pipe but refused to pay for the remediation and repairs. They apparently have a "condo exclusion" in their insurance. Beware if you are a condo owner that apparently any mistakes they may make are not covered. My building and others managed by the same company will no longer work with HC Plumbing. read more

I want to send a huge thanks to Karen for reaching out to us in regards to our previous experience with Harry Clark Plumbing. She was very apologetic about how the plumbers handled the situation and very eager to help us resolve our leaking faucet issue. She was quick to respond back to us after I posted my review, and she was able to send Brad out from the management team to personally stop by to take a look at our bathroom sink. He was very quick, pleasant, and professional. He sent us a quote for the replacement of the faucet right away, and we are now in the process of scheduling the install. Thank you Karen and Brad for not only reading my review, but for taking immediate action to resolve our issue. I can tell that you really care about your customers and your business reputation. This is a vital trait of a great business. Thank you for reaching out and making things right. Looking forward to continuing our business relationship. read more

I so appreciate Harry Clark Plumbing & Heating. In fixing my ancient gas floor furnace, the serviceman (Ronnie) was knowledgeable, skilled, efficient, communicative, and friendly. Thank you! Andy in Oakland's Dimond District. read more

Harry Clark provided the most responsive, professional and quality services for both a recent gas leak, and failure of a water heater. Almost immediately upon my call, Bradley dispatched a crew to come and shut off the gas, pending the repairs promptly thereafter. Jose and Ryan were very efficient and thorough not only repairing the specific leak, but testing all the gas pipes. New water heaters were needed, and they secured, delivered, and installed them the very next day. Thanks to Harry Clark, we were able once again to enjoy our gas appliances, and lots of hot water. We highly recommend their expertise and services. Virginia O. read more

There was a time when Harry Clark was a top notch ethical company and I would have rated them with a 5 star review. Sadly, that is no longer true. The single star is required. I have used Harry Clark for many years. Unfortunately, something has significantly changed...outrageous price gouging! I called them to snake my clean out, and they informed me that the clean-out needed replacing. They did not provide a written estimate, and I woefully assumed the price would be reasonable. When I asked the sewer foreman how much it would be, he said "3,000.00. But let's keep our fingers crossed." I thought he was joking. He then went on to say that I needed sewer lateral work, at an astonishing 15,000.00 above and beyond the outrageous 3K for the clean-out .When I told the sewer foreman that that was too much, he then stated " how about 11,500.00. ?" Something wasn't right here. So, I immediately, stopped them from doing any further work, and promptly secured several estimates from other reputable companies. All of the other plumbing & sewer companies came in with estimates between 9,000 - 9,200 for the sewer lateral work. And they all provided quotes for the clean out replacement that ranged from 1200.00 - 1500.00. A significant disparity in pricing. When I called Harry Clark to negotiate a lower rate based on the market and what other companies are charging, and a longstanding 20 year relationship, the manager (Brad) became hostile, raising his voice, and argumentative. I was taken aback by his unprofessional conduct. I am not quite sure what to make of all of this. But this isn't the Harry Clark that I've done business with for 20 years. I will never use them again, ever. The price gouging leads me to suspect that commissions or some other unethical practice is taking place. Take it from me, get other estimates before letting this company rob you. read more

I've given my review below. I was pleasantly surprised to get outreach from customer service to "make it right" and I planned to follow up and possibly change my review. But after seeing Don's response to my review, not only completely opposite the apologetic tone of the voicemail I received but also flat out LYING about the unskilled plumber they sent who did mishandle the repair, there is no way I would change my review. "Small business" or not, you screwed up and you should have just owned it. This company can lose my number and I'll lose theirs. read more

Harry Clark relocated and replaced two on demand Navien water heaters as we moved into our new house. The previous install had been amateur hour, and the crew at Harry Clark were clearly professionals and were able to tackle a challenge. Brad Jr. was responsive and helped come up with a plan that everyone was happy with, and Nick and everyone else did an amazing job making the exposed copper pipes into a work of art in our garage. The crew did amazing work but we would have appreciated if they're done a better job cleaning up at the end of each day and at the end of the project. When one water heater started acting up a few months later they came out quickly and swapped out a faulty circuit board under warranty. We would certainly hire Harry Clark again! Be read more

Harry Clark Plumbing & Heating - 2 new on demand water heaters with artistic copper piping by special request - Plumbing Near Me - Oakland, California

Called Harry Clark Plumbing when my gas was shut off when my earthquake shutoff valve was faulty and PG&E was unable to re-start my gas. Having no heat and hot water on a cold November morning was not a fun way to start the day. I called Harry Clark around noon and Kevin called back and showed up about an hour later. Very impressed with the quick response time, even more impressed by his due diligence in fabricating the new earthquake shut off valve in tight quarters. Kevin then walked me through the process to relight the hot water heater, and the need to bleed the gas line before relighting. This is why PG&E is typically called to re-light them. Appreciated his explaining the process to me as he did it. Great job, Kevin, thank you! Highly recommend Harry Clark Plumbing! read more

Harry Clark plumbing and heating is one of the best companies I've ever worked with for home-improvement projects. Reliable, kind, skilled, and willing to go the extra mile. Highly recommended. read more

I called them in crisis, during the atmospheric river we were going through in early Jan. I had 4 feet of standing water in my sub basement, due to a power outage. unfortunately the water heater was in the sub basement, submerged--- the sump pump quit when the power went out during the storm. I called Harry Clarke in crisis mode. they were able to come out w/in a day or two, and create a practical sump pump solution. my new sump pump has a device on it that works by water flow, and will kick in when electricity goes out, leaving my sub basement high and dry, yay!!! as you know this winter has been abnormally wet, and my sub basement has been dry. Everytime it rains I give thanks to Harry Clarke, for their fast respond to my plight. they also put in as tankless water heater, and did a great job. they were on time, professional, and responsive. I will definitely muse them again. read more

As I freeze for the 5th year in my home, I once again think about how much I hate this company and how long this review is overdue. Let me count the ways: 1. Lying. When it was clear I needed a new furnace I called three companies for three bids, and Don from HC came out first. He asked me who else was going to come to bid, and when I said who, he claimed "we'll be 15-20% less, and when you get their bids, you'll call me and say, Don, put me on the schedule." [Truth? I was definitely in a hurry. I had an ancient furnace resulting in $400+ gas bills undisclosed by the sellers of my house and wanted to do some kitchen remodeling work, so time was of the essence. Simply because of when they could come (soonest) and trusting his word they were so much cheaper than competitors, I booked them. A week later I got my Atlas bid for ~$500 (5%) more that also included an extra duct for COMFORT as well as a better-model furnace. So in essence same $. 2. Lying, part 2--not accepting responsibility. One of their people cut an electrical line under my house, and my electrician confirmed this. I had two light sockets and one outlet go out due to their install. When I came back to them later to mention/ask for repair, they denied responsibility completely and pointed to a previous note I had sent re: PG&E complimenting their install. Sure, some PG&E guy who also claimed not to smell the gas leak (along with my spouse and everyone at Harry Clark) said the furnace looked great. All new furnaces can. We still had a gas leak, and the outlet/sockets affected were far away and not looked at by PG&E. Don (see above--lying) again dug his heels in and refused to take responsibility, referring to "multiple others" in my house. Well, actually the other underneath the house was my electrician who ID'd that someone else cut this line, and the only other was above the house simply installing cabinets and not dealing with electrical/plumbing/systems. HC refused responsibility and I paid my electrician $225 to correct THEIR error. 3. HC rec'd some crappy Honeywell thermostat, and it broke about 2-3 years later, during its warranty. I called Honeywell, under warranty, but they insisted I could only get the replacement therm through my furnace dealer, so I called HC, because Honeywell made me, and I thought it would be gratis due to warranty. Since our house remains FREEZING ALWAYS due to HC's duct work design, I asked that as long as they were here to take a look at that. (We have hot or freezing but nothing between.) Turns out, this was NOT gratis, and I had to pay $145 to replace one crappy therm with another BRANDED to HC, so every time I adjust it I have to look at their liar brand name. And the servicer who came YELLED at me for balking at the $145 because they can't "go around offering free labor" and sure that's fine but why not inform me first because a therm replacement is SO NOT HARD and easy DIY. No one TOLD ME UP FRONT. 4. Horrible, incompetent drywall work. (Please refer to photos, which will tell ALLL.) 5. My friend had to sue them in small claims after they refused to take responsibility for illegally connecting their sewer line to the neighbor's. I mean, sure, the city inspectors never should have let this fly, but it makes one wonder about the integrity of both. 6. Other friends and their horror stories, too, but not anything they felt comfortable with me posting. Also hearsay among tradespeople about other lawsuits but nothing I can speak to; I can only speak to the fact that I soooooooo regret forever hiring them based on #1--Don's original lie. Do yourself a favor and avoid these crooks. read more

Harry Clark Plumbing & Heating - Really shoddy unprofessional duct/drywall (my ceiling was pristine before meeting Harry Clark) - Plumbing Near Me - Oakland, California

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Harry Clark Plumbing wanted to charge me $7,000 for a standard water heater (not tankless) . I think that's all I need to say.

When the pilot light on a tenant's water heater failed I called Harry Clark and they had someone at the unit the next day. The new water heater was installed by the time the tenant came home with a minimum of hassle. It's not an inexpensive job but the price was reasonable. read more

We had a new furnace installed after many estimates, much research and long conversations about best furnace models etc. We chose Harry Clark because their estimate was right in the middle of all the estimates received and they were very responsive with answering questions etc. The installation team was awesome and had our new furnace installed quickly. The York multi-phase furnace is everything we wanted - super quiet, highly efficient and well priced. I am glad that I listened to Brian's advice and went with the York. The York has a bad rep as its initial rollout was rocky. Those issues have been rectified and as I looked at the dates of all the bad reviews I could see that they all matched the initial 1-3/4 years that the model rolled out. We got the York multi-phase furnace (read more quiet and more energy efficient) for the same price as a Bryant 2 phase. We couldn't be happier. A few months later we had Harry Clark install a new instant hot water heater. We went with their recommendation to replace our non-condensing model that was 16 years old, with an AO Smith condensing model that we ended up hating. The noise and vibration from the condenser sounded like a small airplane in the house - and after some tweeks by the manufacturer the plane was reduced to a motor boat taking off whenever we turned on the hot water. When the dishwasher was running at night the vibrations from the hot water tank would vibrate through the bed... It was not a happy situation at all. Brad (the owner) at Harry Clark listened to our concerns, came out himself, sent the company rep twice, and when all of that ultimately did not resolve the noise/vibration issue, they swapped out the condensing heater for an AO Smith non condensing hot water heater and voila! The noise is gone! The vibrations are gone! It is heaven to turn on the hot water and not hear any thing but... well, water! While the situation was not ideal, Harry Clark was committed to getting it right and they did. For anyone looking into instant hot water heaters, if you have a smaller wood frame home I would strongly recommend going with a non-condensing model. It is literally silent while running. As a hot water heater should be. Thanks Harry Clark for sticking with us! We will absolutely use you again - great customer service and thank you for truly backed up your commitment to providing customer satisfaction. read more

The technicians are great, but they are very predatory and will try to milk you for all you've got. I've re-iterated my issues to the operator and she confirmed that they will have all the tools necessary. Needless to say, they sent a person without the necessary equipment and had the audacity to charge me because they sent someone out, and afterwards proceeded to gaslight me into feeling like I am trying to stiff them. read more

We were replacing a very old furnace and were unsure what type of furnace to choose. The store manager explained to us the pluses and minuses of each choice. We reached our decision, got a fair quote and the installers did a fine job of doing the work and cleaning up afterwards. 10 months later, we are very happy with the results. read more

The company is either the most incompetent or most unethical or both. We had a problem with a very noisy water heater. They sent a guy out the first time to assess the situation. He was convinced the pressure valve outside the house needed to be replaced, so he came back a week later and replaced it. Did not fix the problem. He came back a week later and installed a brand new pressure valve right next to the water heater. Did not fix the problem. They had no idea how to fix the problem. I called a Roto Rooter guy who came out and fixed the water heater noise problem in 15 minutes. Then these idiots try to charge me for solving nothing. Fast forward a month and I try to turn on my front yard irrigation system - there is no water supply. So another irrigation guy comes out and explains to me that the outside pressure valve that these dummy's replaced (a) did not lead to the water heater and had nothing to do with the water heater, it was for the outside irrigation system, (b) was installed upside down so it shut off water to the irrigation system, and (c) was not needed for the irrigation system either because the irrigation system has its own pressure valves. Use this company at your own peril. What a nightmare. read more

I needed to replace the tub drain assembly in my bathroom. While replacing the assembly the Harry Clark technician chipped the bathtub enamel. He was apologetic and immediately called the company, didn't make me pay right away, etc. But when I spoke to the main office at HC they refused to take responsibility and said they couldn't possibly predict what would happen with such an old tub (each time I spoke with them their estimate of the age of my tub went up 10 years). I argued that I should have at least been warned there would be a possibility of this damage happening, but they made it seem like it was my fault for not knowing and refused to pay (even partly) to get the enamel fixed. The repair cost was $350 so not break the bank but also not negligible. Harry Clark made me feel like this was par for the course, so imagine my surprise when I called a different company to get the enamel fixed and that company immediately asked, "are you paying for this or is the plumber?" I also told them what Harry Clark said about my tub being really old and they responded, "your tub is not that old." I understand mishaps happen unexpectedly but feeling like I have been lied to and taken advantage of is completely unacceptable. read more

We've had Harry Clark do several jobs for us -- the biggest being a retrofit on a very problematic sewer lateral. They've always been very fast to respond -- the office staff have always been friendly and professional -- and their work has been excellent. Our latest experience was just this week. We had a new range ready to install, but needed our natural-gas plumbing evaluated. Harry Clark managed to get someone out to us despite the holiday rush. The plumber, Weston, was very helpful and completed the range installation for us. (Thank you.) read more

Made appointment to have kitchen faucet installed. They brought. A great replacement and installed it with no fuss. Good service. Good people. read more

It was during a big storm and Harry Clark was slammed. A huge tree had fallen and broken a water pipe and was flooding underneath the house. Electricity was out, tree was covering the valve to turn off water and East Bay Mud evaluated and could do nothing until the tree was removed. This could be days. Bradley managed to gather a crew with a generator and pump and was at the site within 30 minutes of the call. The guy pumped all the water out from under the house and with unbelievable ingenuity managed to get access to the water source and identify the broken pipe and clamped it down stopping all the water from rushing under house. It was a Superman moment!!! Thank you Harry Clark for responding to a 911 situation with all that was going on and being better than anyone expected!!! read more

I have had great results with Harry Clark Plumbing. They did such a great job from the 2000's until present day (yesterday- my old sump pump finally gave out) The sump pump well they installed has gotten compliments from drainage consultant to electrician working in that area of the crawl space- anyone who happens to be working in that area of my house has commented that "they did a very nice job on that pump well". Yes, it's true I'm sump pump proud. Thank you Harry Clark! On time, responsive, communicative, dependable, great work! read more

I really like the folks at Harry Clark. So helpful, pleasant and skilled! I've used them a couple of times and I was happy both times. I called up 2 days before thanksgiving when they were booked but they went out of there way to make sure I had a working sink for the holiday. They sent over Dahymel who was just amazing. So kind, helpful, instructive and pleasant. He is a gem. Everyone at Harry Clark has been great. I usually don't write reviews but I was so happy with them and good plumbers are hard to come by. I've referred many neighbors to them and they too have been happy. read more

we just moved to Bay area and working with Harry clark team was a good experience.Every one in their team is responsible and efficient. David lee is very professional and prompt.Armando and his brother are competent .Daniel is energetic and inspiring , Brian is prompt and professional. I would recomend Harry clark to anyone . read more

They recently installed a Mitsubishi split air system in my Oakland loft. The service has been friendly, professional and competent. The quote I received was more than reasonable, the installation was very clean/looks great, and they stand by their work if you have any issues. These guys have experience installing this great technology, and it being slow to catch on here in the US it's hard to find a lot of folks like this. Plus--I have AC in the summer and heat in the winter in a home that is difficult for temperature control. I recommend looking into a ductless split air system if you have trouble keeping your home comfortable, and I highly recommend Harry Clark Heating and Plumbing to do the job. read more

Harry Clark Plumbing & Heating installed my furnace over 20 years ago and they have done the maintenance on it since then, and they've always been responsive and helpful, including on the rare occasion minor repairs were needed. A couple of weeks ago, my water heater started leaking suddenly and needed immediate replacement. I called at 9:00 am and Harry Clark had a new water heater installed and everything cleaned up before 3:00 p.m. that day. All with very friendly, good service at a reasonable price. I'ver appreciated the great service over the years, and so glad I knew who to call in an emergency! read more

I waited four days for them to try to fix my sink. I told them I had to come from work before getting home and it would take me 20 minutes to get there.. The day the work was to be done they didn't call me because they wrote the phone number wrong, assumed I was supposed to be at home exactly on the hour, did not contact me beforehand, like a day or two before, and took off before I got home. This really upset me. It was over the weekend as to why I waited so long without water. Then after I told them I work in the mornings, they could only schedule in the morning. I would not recommend them if you work and can't be home before three. I will never use them again. read more

The Harry Clark team did a great job! We have central heating installed. We have a cozy Oakland bungalow with a small attic. Don came to give a competitive quote. They were available for quick scheduling in the spring. Armando and his team worked very clean, were prompt and finished on time. Customer service from both operations and the home office team were great. We will book again for our heating and or plumbing needs. Thanks! read more