Found this company At House thru Yelp and they responded quickly and scheduled an initial consultation the following day. Within one more day they fixed an incorrect installation of a Rinnai tankless hot water heater and added in a condensate neutralizer and expansion tank. The service was so prompt and the price was so reasonable (it was much better than some overpriced service quotes I received from other companies) that I recommended the company At House for two more properties that needed correct installation and maintenance for tankless hot water heaters. I highly recommend this company for any hot water heater installs, maintenance, and repairs. read more

Great business... At House serviced our tankless and took care of a warranty repair. They were quick and efficient and clean. And they are honest with fair pricing. Really appreciate Hiro and Ken! read more

Absolutely wonderful service. We used At House to install our water softener and RO system at our prior home. When we needed to move, At House was able to uninstall the water softener system and reinstall it in our new home. They also installed our new RO system. Additionally, we've used them to service our tankless water heater for maintenance. They are reasonably priced and their pipe work is amazingly organized and not an eye sore. Very professional and experienced, and just a great experience every single time. read more

After doing plenty of research and getting recommendations from neighbors, we decided to go with At House to install a water softener system and reverse osmosis. Communication via email was quick and I was able to schedule an installation with ease. Installation took about half a day. We had a minor issue a few month later, but Hiro came out to fix it quickly. Almost two years later, the system continues to work great -- minimal hard water stains on the shower glass or sinks, RO water is amazing, and our skin feels so much softer! read more

Water softener and filter. Prompt response, friendly, professional. Great price. Would highly recommend! Got the hybrid, water feels great! Clean as pipe job for my no knowledge eyes! read more

At House - Water Heater Installation/Repair Near Me - Irvine, California

We had our tankless water heater inspected, flushed and descaled. Very professional. Very thorough. Great price! Definitely will use At House again! read more

Excellent service. Very prompt in responding to questions. Professional service . Started and finished installation exactly as specified. Waited after installation until we could make sure everything worked . Best price of the several quotes we got. Highly recommend them to anyone looking to install a tankless water heater system. Very clean work. Thanks Hiro . Your team is wonderful. read more

These folks are the real deal! Hiro is extremely knowledgeable. He diagnosed an issue with my water pressure regulator and replaced it. The price was very fair. I would highly recommend this company. read more

Imagine you have a problem and there's people who can solve it for you, and do it right the first time. I called them on a Friday and it was installed on Tuesday. My old gas water tank heater ( GE ) was 22 years old, not yet broken but it was time to say goodbye. I bought the gas tankless Rinnai from Home Depot. Rinnai is a Japanese brand, and At House is a Japanese-American contractor Initial in-home visit with At House was very efficient with run down of items needed to be addressed. Contractor ( Hiro, my hero ) very responsive and pro active in accommodating to my concerns: install location, gas pressure. Lucky, I didn't need to do ( 1/2" to 3/4" pipe for Rinnai ) gas line modifications. Cost estimate was accurate and very reasonable. Very quick to schedule appointment and job done very neatly, methodically, promptly and professionally. This is not their first rodeo. ( Thank you " M, " You're the Best ! , the mirror said ) The end result is a masterpiece of " art, " with all the piping beautifully lined up. Not sure if anyone can put a monetary value on happiness. I was thrilled with the installation. I had been dreaming of this Rinnai ( RXP 199iN ) for the past decade and finally dream came true. Hot water came on fast. Machine is in a closet so not much noise when it runs. At House has the Big-city experience and know-how with kindness / honesty of small town feel that really puts my mind at ease. Am a very Happy and thankful that I found them on Rinnai's website as an ACE Pro Rinnai certified contractor, and reading Yelp reviews like what you are doing right now. read more

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Moved into a new house and the water heater broke. Contacted them during thanksgiving via Yelp and they came out the next day to replace our old tank unit to a new tankless Rinnai. Communication was easy and fast. The finished job looks great. read more

These people are the real deal. Highly recommend. We had a problem with our tankless water heater. I called them in the morning, and they fixed it by 3 p.m. I called another company and they said I had to replace, costing me several thousand dollars. read more

Hiro went out of his way to cater to my schedule and did a fantastic job installing the water softener and filtration unit at a very reasonable price. Perfect experience! read more

All services were explained and done as promised. Prices were fair and service requests were answered and responded to in a VERY timely fashion. We are completely satisfied with this company and will definitely use them in the future! read more

These guys are ROCKSTARS! Every interaction, from the initial contact with the owner (Hiro), to the techs that came out to my house, this business operated like a WELL-OILED MACHINE! With WORLD CLASS service experience and friendly techs who treated the installation job like they were working on their own house. I'm super happy. Clean install job, cleaned up after their job and best of all their pricing is super competitive. ALL the right reasons to HIRE "AT HOUSE". They took care of my warranty registration and gave me guidance on proper maintenance read more

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Hiro and team were prompt and competitively priced for removal and installation of Rinnai Gas Tankless water heater. They came out to inspect after providing preliminary quote via yelp, explained the benefits of tank vs tankless, and did a great job installing the unit. The instant hot water is a step up from the old water tank. They also helped to coordinate a rebate for the tankless unit on our behalf, it's only been a week since installation but we are very happy customers. Thank you much, I would recommend At House for your plumbing and electrical needs. They are also a local small business in the community which is an added bonus. read more

We Just replaced our old water heater with a tankless Rinnai and we love it. Hiro was very easy to communicate with, transparent with pricing and service. Great value, competitive price, amazing service and product. Highly recommend this business read more

At House - tankless water heater - Water Heater Installation/Repair Near Me - Irvine, California

If you have to maintain or replace your tankless water heater then they should be able to do a great job 5 stars. But for other plumbing needs not so much. The technician was not able to put the tub fixture back together after replacing the mixing cartridge so just left it as is for me to figure out. I had to call out a different plumber for that so 1 star. (He actually switched out one of the screws from the other bathroom so that's why it was not fitting right) read more

Specialist for the Tankless Water heater! Best in towns!! They are very familiar with most of tankless water heaters and others. Takagi, Paloma, Noritsu, etc.... read more

I have used At-House for many years, Kevin used to service it, installed a new Norwitz in 2020 at a very competitive price, and was outstanding. Today, we had a different technician (didn't get his name) and he was on time, did a great performance in the time he said it would take. I highly recommend At House. They deserve the 5-star rating. read more

I had my water softener installed by Hiro and his crew previously. Sunday my Noritz tankless water heater went on the blink and stopped working. I called "At House " and spoke with Hiro since he installed my water softener previously. The unit wasn't in stock , however, Hiro committed to have the unit and installed Tuesday. As promised Hiro's assistant arrived on time and started the installation. Both Hiro and his assistant were professional , friendly and patient when I asked questions . The Rennai tankless water heater is working perfectly and the water is even hotter than the previous unit. Hiro replaced all of the hardware fittings and lines to the new unit. When they were finished they thoroughly cleaned up the area and took the old unit with them . I highly recommend "At House" if you need a tankless water heater or water softener installed. Great job guys! Thank you ! read more

At House - Water Heater Installation/Repair Near Me - Irvine, California

The installation of our new tankless water heater was absolutely spectacular. The team was professional in all respects. Arrived early after we had lost our conventional water heater the night before, and had it all installed by 3:30. I cannot say enough good things about At House. You will be thrilled with your selection. Competitively priced and worth every penny I spent. read more

Quick work, prompt appointment and have had no issues with my water heater error codes since they came. I have a Rinnai dual setup and they were knowledgeable about what needed to be done. Recommend! read more

Hiro at "At House" will offer you the best price in the market yet not to mention they have a lot of experience for any type of installation. (relocation from inside the house to the garage or the outside exterior wall)   I had a great communication with Hiro and Makito and received the quotation for replace the storage tank water heater in the hallway closet to the tankless water heater relocate to the garage. Price of the unit and labor are very reasonable. Result was great, I am so happy to have a tankless water heater and used At House for installation. Thank you Hiro and Makito! At House is the best! read more

At House - NORITZ EZ SERIES EZ98 - Water Heater Installation/Repair Near Me - Irvine, California

Been using them for years to service my tankless water heater. Always great service and reasonable. Highly recommend.

At House does an impeccable job, and understands their product from inception to ending. I am so happy with my installed tankless water heater. They were efficient, experienced, and polite. I could not recommend this company more. Hiro and Naomi are very communicative and helpful. Pricing is competitive. Workmanship is superb. read more

It was a pleasure working with Hiro and his team! We decide to replace our tank water heater with tankless, primarily to free up the big obnoxious space that the tank occupied in the corner of our garage. It was a challenging job because we chose to relocate the water heater to the outside, which meant retrofitting the pipes and gas line. Also, we have an existing recirculating hot water system which involves extra piping. We chose the top of the line Navien, as that seemed the obvious choice for recirculating systems. The gas company and federal tax credit total $1600, which covers a significant part of the installation. Not only was the price very competitive, but he didn't charge extra for the difficulties in relocating the unit to the outside of the house. With the other estimates I got, they made it seem like a huge hassle and wanted to charge accordingly. Hiro said it was no problem and knew exactly what to do! We are very happy with the results, including the valuable space that was recovered! read more

This is by far the best plumber I have ever had since the day I was born. I don't know what to do if I did not meet Hiro. So long story short my tankless water heater failed again and the culprit was the hard water in our area. Knowing that Rinnai had a bad track record providing qualified plumbers, I was not too keen calling one from Rinnai. But I had to, so I called At House and talked to Hiro. I was smart this time, I yelped At House and I was in disbelieve with the 5 stars review. I had to make sure that these 5 stars review were real. It did not take that long for At House to prove its worth. I spoke with Hiro who explained everything so clearly and Hiro did not took advantage of me like many other plumbers before him who saw me as "free meat". So, I scheduled with At House to replace my water heater the following Monday. On Monday, Makito came and completely replaced my water heater in less than 2 hours. YES, you heard me right, less than 2 hours. I was skeptical at first, but after I looked at the installation quality, Makito's courtesy and customer service (Makito registered my water heater, thank you!), and At House honesty and transparent pricing, I am now a believer. I immediately scheduled At House to install water softener the following week. I did not check around about the pricing, however 2 days after I did check around and I was more impressed with Hiro, he was right, if not lower than most of the market price in my area for water softener. Thank you Hiro for your courtesy and honesty. I would refer more business to you for sure if anyone needs help for any plumbing needs. Again, Makito came and took about 3 hours to install the water softener. I am very happy with the installations and I think Makito did an artistic installation, could not be happier than this. For any plumbing need, I would in a heart beat to recommend At House (Hiro) to you. If you also need referral (prior choosing your plumber, I did) or questions to ask, feel free to message me. Hiro is exceptional. read more

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We just had our maintenance service on the tankless system that was installed by At House in 2019. Once again, the service was outstanding! On-time, efficient, and achieved the desired result. Our tankless water system has been operating smoothly now for 5 years. Thank you At House for recommending this system to us, and for maintaining it as well! Highly recommend!! read more

Hiro and his team are top notch. Back in 2019 (prior to covid ) They came over for a detailed estimate for a tankless. Model quoted was a Rinnai Tankless water heater. Remove old water heater to install new tankless water heater. Very detailed and priced accordingly. Money was spent instead on backyard landscaping/remodeling. Project was put on hold. We are back in 2021 and the Tankless Water Heater was on my TODo list. Hiro came out for the detailed estimate. Model quoted Navian condensing unit Retrofit existing old exhaust line to accommodate new line Repair replace drywall In-line decalcifying filter New condensation line At House is the ONLY company to retrofit existing old water heater exhaust line. All Other contractors want to cut through Drywall to vent to the side of the house. Not a pleasant look plus the smell of the exhaust vent. All priced accordingly and even better qualifying rebate from the Gas Company. This time I chose the Navien unit over the Rinnai wifi unit Pros Cons dependent on wifi At House notified me in the past Rinnai units had issues with their Wifi module not staying connected. I verified this researching on the internet. Install was CLEAN and professional. I do not regret hiring At House....Hiro and their team. Will be a repeat customer when it comes to annual maintenance until I am confident I can do the maintenance myself. At House gets 5star review from me. Thankyou for your attention to detail/quality of work. All other contractors flaked out on the house visit for estimate quotes. They would rather the customer send pictures and communicate by email. At House gives personalized service and knowledge on the products. read more

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No complaints here. Hiro was very communicative, helpful and easy to work with. Got a good deal on the highest efficiency noritz tankless water heater. Getting a $1300 rebate from so cal gas and $600 tax credit. Very glad we went ahead with AT HOUSE. Replaced our tank heater from our attic and came out to less than their estimate. Very satisfied. Thank you! Would recommend 100% read more

Water heater broke Saturday night. Hiro called me back Sunday AM and squeezed me in for afternoon water heater replacement. Beat everyone else's quote and speed. read more

At House - Water Heater Installation/Repair Near Me - Irvine, California

At House is the ONLY plumber you need to call! They are very prompt in returning your call, clear, precise and accommodating. We have had our Noritz tankless water heater since 2008 - it has been a great water heater with very few problems. At House has done some routine maintenance since its installation, but admittedly our lack of "routine" maintenance (neglect) led to its demise. Our local water is "hard" and without flushing the system at least once a year just cluttered the inside with deposits causing it to leak. Hiro came by our house just a few hours after our call to diagnose the problem. He called me to explain his findings and was able to fit us in for a removal and new installation the very next morning. We were without hot water for a very short period and even actually enjoyed our cool showers, thankfully it's summertime. Hiro was early to install, through, and left without a trace, other than a new shiny replacement tankless water heater. Their prices are very fair and he even let me know of a rebate that may be available for the system installed. He doesn't stop there - he emailed me a receipt and the link to apply for the rebate. That's amazing customer service! Because of our experiences we've had with At House, we ONLY need one plumbing company and will ONLY need to recommend one to everyone we know! Thank you for your help and the amazing way you conduct business! read more

A friend of mine recommended At House to install my tankless water heater. I couldn't be happier with the results. Hiro and his guys were friendly, knowledgeable, and efficient. On top of that, they were very reasonably priced. I'd highly recommend them and will probably use them to install my water softening system in the future. read more

Hiro and his team are probably the best kept secret in Orange County. They managed to quickly and SAFELY install my Rinnai tankless that I purchased on my own, and do so without causing any damage to the garage structure. The install was complex due some ventilation challenges. Every other plumber I talked to wanted to punch all kinds of holes in the façade of my house, which would've definitely upset my HOA. The guys came on time and managed to be done by the early afternoon. Their craftsmanship is superb and the installation passed city inspection easily. If you're looking around for someone to install a tankless, please look no further. read more

HIRO IS A HERO!! After several calls and quotes from companies to install a tankless water heater in my small condo, the easy decision was to go with At House. Hiro was very thorough & knowledgable. He was also on top of everything with getting the work permitted through the City of Laguna Niguel and the final inspection. The work area was clean, quick and efficient and I never once felt uneasy about any aspect of the work! Recently, late Friday the day after Thanksgiving, my heater stopped working. It didn't seem to be the electric connection because anything else plugged in would work but when the heater was plugged in it would trip the breaker. I called Hiro and he suggested that I plug it into another outlet just to test whether it was the outlet or the heater. I didn't have a 3-prong extension cord - in a fit of cleaning out closets of things I never use, I had given them all away literally 2 weeks before! Hiro didn't suggest that I go buy one, he didn't tell me it would be inconvenient, he didn't sound put out, he didn't ask if I could wait, nope! Instead he professionally & cheerfully told me he would be on his way in an hour or so. I did feel terrible about it and decided to scour my garage and luckily found one & was able to not waste his time. Turns out, it was the outlet. Also, the when speaking with the City Inspectors separately, they too were very impressed with Hiro. I wanted a tankless to squeeze in some extra room in my tiny, awkwardly shaped laundry 'room' and this did the trick for some much needed storage. One final thing, Hiro is PEX Certified which is important if you've had your plumbing redone with PEX. read more

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I was so impressed with the installation of tankless water heater and softener, I had them install new toilets and angle stop valves. The team was professional and courteous and the pricing was more than fair. I will continue to use Hiro and refer anybody who is looking for their services. read more

The first time I called them there was an error message on our tankless water heater. I had one previous consultation and they said I needed a new tankless water heater, at $3,500/$4,000. At House said over the phone it might just need a cleaning, otherwise new tankless water heater same brand at less. Hiro came out and did a thorough cleaning and said that was all that was needed. $100 all done. And informed me that at least once a year to get it cleaned for longevity. At House has come out a few times since over the years to inspect, and clean our waterless heater. Always very prompt and professional. read more

I needed a water softener unit installed in my townhomes. Went to Yelp to receive multiple quotes. After receiving 4 quotes, I decided to go with At House. Their price was very reasonable, and Hiro was very easy to work with. No pressure sales, and very up front with what I was getting. I'm very happy with the installation, as it was a clean install and was done on time. read more

Their work was good, charge was good. I will use them again. They changed a reverse osmosis water filter. Their price was about half of what the other place quoted for the same work. (The person I used to use for the past 10 years for the filter system became ill and I was looking for a new person.) read more

Hiro was super fast , came on time , and did a great job installing our Navien tankless water heater. Highly recommend At House and will reach out them for all our plumbing needs. read more