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Top-Rated Tankless water heater repair pros in South Pasadena - Updated Nov 2026

Avatar for Payless Water Heaters & Plumbing
Payless Water Heaters & Plumbing
4.2(
132
)
Tankless Water Heater - Repair

Serving South Pasadena, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Perfectly. They cleaned everything up, explained how the system worked and how often it needs attention, and hauled away the old hot water heater. They arrived on time, worked steadily, and finished before dinner time."
New Tankless Water Heater Installation
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

Response time8 hrs
Response rate100%
Recommended by73%of homeowners
Avatar for Leon Plumbing
Leon Plumbing
4.8(
79
)
Tankless Water Heater - Repair

Serving South Pasadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1983

Free estimates

Emergency services offered

"This company responded quickly and provided excellent customer service. They were here in 24 hours, removed the old tank water heater and installed the new tankless water heater quickly and efficiently."
Tankless Installation (RUR199e with wifi)
Exterior Tankless Water Heater
Dual Tankless Water Heater Installation
Tankless water heater ACE PRO
Tankless Water Heater Service

+8

Response time8 hrs
Response rate94%
15 neighbors recently requested a quote
Avatar for G M C Plumbing, Inc.
G M C Plumbing, Inc.
4.9(
86
)
Tankless Water Heater - Repair

Serving South Pasadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Very professional. Prompt. Tankless water heater has been working fine ever since. Hired another plumbing company before calling G M C. They were half the price. But did not solve the problem. David with G M C diagnosed the problem. Completed the work. No problems ever since. Thank you Angi, thank you David and G M C Plumbing."
New Drainage
Old  shower Drainage
New kitchen faucet
New Drainage
New Drainage- SEWER LINE

+3

Response time5 hrs
Response rate97%
24 neighbors recently requested a quote
Avatar for L.A. Plumbing Pros
L.A. Plumbing Pros
4.7(
95
)
Tankless Water Heater - Repair

Serving South Pasadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"Vicâ s plumbing came to my rescue when I need them. They arrive on time and weâ re able to replace my water heater sooner then the other companies had quoted me. They are professionals and extremely friendly to work with. Vicâ s plumbing is my go to plumber."
Remodel
Reroute irrigation valves
50 gallon water heater
Water pressure regulator
Remodel

+25

Response time3 hrs
Response rate95%
4 neighbors recently requested a quote
Avatar for Ideal Plumbing Inc.
Ideal Plumbing Inc.
5.0(
21
)
Tankless Water Heater - Repair

Serving South Pasadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"Stop looking for a plumber! Sam is the man for you job. I can’t say enough about him and his team. He worked within our budget, did top notch service, and even offered free advice for our other bathroom. Sam installed a tankless hot water heater, ran plumbing out to a brand new Adu, and helped us complete a perfect compact bathroom. Sam is a master of his craft and priced well. Thanks again Sam!!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Response time7 hrs
Response rate100%
Recommended by66%of homeowners
Avatar for HARMONY ELECTRIC PLUMBING & AIR INC
HARMONY ELECTRIC PLUMBING & AIR INC
4.8(
36
)
Tankless Water Heater - Repair

Serving South Pasadena, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"They called us quickly and got a plumber out within a few days. Super thorough - tested all pipes and water sources to diagnose the problem. They were able to perform maintenance on most bathrooms the same day and improve the water temperature in our showers. Gave helpful, non-biased advice on potential further plumbing improvements. We will likely call this company again for any and all future plumbing needs."
826 neighbors recently requested a quote
Recommended by38%of homeowners
Avatar for Overland Plumbing
Overland Plumbing
4.1(
863
)
Tankless Water Heater - Repair

Serving South Pasadena, CA and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Overland was easy to deal with. Followed through on appointment immediately (even came early) and stayed until the job was done (flushing a tankless water heater) and then stayed to help with another problem that I asked about while he was here. Patrick was as nice as could be. When he didn't have the part for the extra job I asked about on the spot - he went to the store to get it and fixed the problem without hesitation. I will definitely use Overland again and will ask for Patrick!"
Plumbing for Bathroom Remodels
Plumbing for Bathroom Remodels
Plumbing for Bathroom Remodels
Plumbing for Bathroom Remodels
Plumbing for Bathroom Remodels

+30

Response time5 hrs
Response rate100%
448 neighbors recently requested a quote
Avatar for California Drains Incorporated
California Drains Incorporated
5.0(
30
)
Tankless Water Heater - Repair

Serving South Pasadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"This company is the best. They were upfront on the cost of the repairs and did a fantastic job. They will aways be our first choice for any future plumbing projects. Thank you, California Drains!"
Water Main Repair
Water Main Shut Off Valve
3/4" Pressure Regulator
Clean Out Installation
Sewer Spot Repair

+11

Response time10 hrs
Response rate97%
133 neighbors recently requested a quote
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