Highly Rated by Our Customers

We’ve built our reputation one happy customer at a time, and it shows! With a near 5-star rating on Yelp and Google Reviews, homeowners across our area consistently rely on us for honest, reliable, and professional service. From quick emergency repairs to full tankless water heater installations, our clients rave about our punctuality, expertise, and attention to detail. See what your neighbors are saying — check out our reviews here:

Tinnie Feng
Tinnie Feng
04:55 09 Jul 25
Daniel is very nice and responsible. He gave us a good deal for the parts replacement. And he has it fixed right after he got the new parts for us.... Very professional and fast! Finally, we get hot water again! Thank you so much! Highly Recommend his help to all of you.read more
Jess L
Jess L
04:23 29 Apr 25
My old tankless water heater had reached the end of its life. The company was able to send out a technician the day after I called. Daniel was great.... The new unit works perfectly. I will definitely recommend this company to others.read more
Danielle H.
Danielle H.
02:30 24 Feb 25
Family was in need of emergent services as I have small children and hot water is a priority. Our tankless water heater was not igniting and needed... to have a part replaced and service, unbeknownst to me. I contacted Rheem and was referred multiple references. The first one I called, auto rejected the call, however, a text was received. I responded and the conversation generated from there. I was informed service would transpire on Tuesday, but I stressed the desperation in my daughter’s care and my toddler’s needs. With that being said, same day appointment was scheduled. It took a bit of time and that was fine. Job completed and I could NOT be more elated! Highly recommend! The tech they sent out was astounding! His attitude, demeanor, his courtesy, knowledge, and professionalism was expertise. I’m known for leaving bad reviews when they’re deserved. This business deserves all of the kudos! Keep up the good work! Be sure to inform your employees how good they are. The tech that was sent out put the icing on the cake with my experience here. I’ll be having annual services as long as I remain a tenant in this home. Thanks for coming out to help my family!read more
Donald DeFazio
Donald DeFazio
05:31 16 Nov 24
Review for: Installation of the Noritz NRCR111DV by TANKLESS WATER HEATER REPAIR & PLUMBING Co. (owners Daniel and Saray)

We reviewed TANKLESS... WATER HEATER REPAIR & PLUMBING Co. a few years back when Daniel was called to service our generation 1 Noritz tankless water heater (8 y/o). Since the first visit we have used him exclusively to perform maintenance and repair. We decided his year we needed to upgrade to the Noritz second-generation unit, which is better built, better quality parts, better manufacturing quality control plus added features. Daniel’s bid was very competitive plus we knew we would be getting a quality installation and reliable follow-up. Like in the past, Daniel WILL NOT disappoint.

Look back at my previous posts about the company. Everything I have said about him remains true to now. There is nothing more I can say. The picture of the installation says it all.
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Perla Morales
Perla Morales
21:29 04 Nov 24
Jimmy Brewer
Jimmy Brewer
23:52 11 Oct 24
Daniel and Jose just fixed my Noritz tankless water heater - they were professional, efficient, quick to assess my problem and a joy to work with. ... They not only fixed my error, but they were creative in directing water away from my house. I highly recommend this company!read more
B. Shin
B. Shin
23:31 26 Sep 24
My Noritz tankless water heater showed code 66 with nukewarm temperature. I called this company and Daniel and his assistant came out and diagnosed... it on the spot. He even contacted Noritz on speaker phone and verified the needed parts. He is the owner and gave me great price much better than other large company. The job was done three days later after the parts arrived to his company and I watched the whole process. They really knew what they were doing and the heater is now working good as new. I highly recommend this owner operated company for all your tankless water heater needs.read more
Jose Carlos
Jose Carlos
17:17 07 Aug 24
Our tankless water heater was acting up, randomly going on and off. I called tankless out of their normal business hours around 9pm Sunday with the... intention of just leaving a message on their answering machine to my surprise someone answered and was able to schedule an appointment.
Daniel knew exactly what was wrong and explained in detail what needs to be done to fix the issue. Daniel was not only detailed and informative but he treats you like family. Overall rating exceeds excellence / expectations.
Highly recommended and super worth in this day and age there are a few to find service that equates to trust and reliability.
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Dean B.
Dean B.
01:50 21 May 24
We’re extremely happy with the professionalism, responsiveness and quality of work. They dealt with the manufacturer for the warranty directly on our... behalf and confirmed the installation date when the parts arrived. They were prompt and completes the job fairly quickly. We’d recommend this company to anyone.read more
Tammy Genzer
Tammy Genzer
20:53 20 Jan 24
I found this company on Yelp & contacted them based on their reviews. We were quoted by another company to replace our current tankless water heater... & I wanted a second opinion. Jessica took my info over the phone, had me text her pics of our tankless hookup & emailed a quote that came in over a $1000 less than we were quoted. We’d been without hot water for 4 days.. They scheduled us for the following day after 4:00. The technician was running late due to traffic but they assured me he was coming, I just knew they’d be calling to tell me it was going to be postponed to the next day, but instead Jessica told me he was still on his way. He showed up after 6:00 & worked until after 9:30 to have us up & running with hot water again!!!! We were so grateful we were not charged any additional fees for the late hour & how they treated our situation as a priority! So professional & all had a great attitude, even at that late hour! I HIGHLY recommend them!!read more
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Heather B.
Heather B.
00:05 23 Jan 26
Very yes! I am so glad I found these guys! I needed a flush for my tankless water heater; which let's be honest has become one of these... pseudo-niche...read more
Harry S.
Harry S.
16:52 08 Nov 25
I wanted to wait a little before writing this review and it has now been over 60 days since the service. My Rheem tankless water heater was installed... by the...read more
Melanie B.
Melanie B.
20:07 06 Oct 25
Got my 30 year old water heater upgraded to a new tankless water heater thanks to a so cal gas program that I qualified for at no cost to me. I spoke... with...read more
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Tankless Water Heater Repair & Plumbing

Lic# 1048143

office@tanklesswhplumbing.com

(626) 493-3019
(909) 913-2630
(714) 951-8771

10050 Bessie Ave,
El Monte, CA 91731

10040 Placer St. #B,
Rancho Cucamonga, CA 91730

5715 W Olympics Blvd, #105,
Los Angeles, CA 90036

325 Verdugo Way
Upland, CA 91786

14148 Mountain  Ave
Chino, CA 91710

4005 E Heritage  Ln
Ontario, CA 91761