CastleWorks Home Services

★★★★☆ 3.8 / 5 (27)
: 3193 Diablo Ave, Hayward, CA 94545
: (833) 921-9006
: https://castleworks.com/san-francisco/

Company Overview

Established in 1995, CastleWorks Home Services (formerly Affordable Water Heater & Plumbing) has been a trusted name in the Greater San Francisco Bay area. Our offerings include a wide range of services, including installation and repair of tankless and tanked water heaters for homes and businesses, plumbing, leak detection, HVAC services, furnace repair and installation, air conditioning solutions, and heat pump services.

We deliver no-cost in-home estimates for installation and comprehensive diagnostics for any water heater problems. Expect clear pricing from our friendly dispatchers, and rest easy knowing our certified and insured technicians back their work with a 100% Satisfaction Guarantee. Trust us to identify the optimal and affordable solutions for your household.

We provide repair and replacement services for water heaters, plumbing, drains, heating and cooling (HVAC), leak detection, rooter services, and much more. CastleWorks is part of an expanding family of home service businesses. Our journey began with a group of motivated entrepreneurs. Each of these companies emerged from modest beginnings, building their family-owned businesses from the ground up in their respective areas of expertise. Throughout the years, these successful companies have provided expert plumbing, air conditioning, heating, and water heater services throughout California. Through their dedication to quality and customer satisfaction, each company has created specialized training and job opportunities for their technicians and team members.

Our story at CastleWorks evolves as we bring tranquility back to homeowners by delivering outstanding home service solutions with unmatched expertise, integrity, and respect.

Business Services

  • Hot water recirculation pump installation
  • Hot water recirculation pump repair
  • Plumbing inspection
  • Plumbing installation or replacement
  • Plumbing repair
  • Water heater installation
  • Water heater repair
  • Water purification system cleaning and maintenance
  • Water purification system installation
  • Water purification system repair
  • Salt delivery

Business Location & Hours



Mon:Open 24 hours
Tue:Open 24 hours
Wed:Open 24 hours
Thu:Open 24 hours
Fri:Open 24 hours
Sat:Open 24 hours
Sun:Open 24 hours

Recommended Customer Reviews

Bernetta W.
★★★★★

Had my water heater replaced today by Christian Nevin. He was very friendly and did an excellent job!

Mekarie R.
★☆☆☆☆

Samantha, no confusion. It's quite simple. What Castleworks tried to do isn't legal. You can't void or alter a warranty that you did not issue.

Shiva B.
★★☆☆☆

After seeing my Yelp review they asked me to call to discuss my concern and I did but the person who answered did not recognize the person who had responded to my review and said she'll relay my message to their marketing team and someone would call but again, no one called back.

Donna F.
★★★★★

Our hot water heat started gushing out of the blue; called Castleworks & they had a tech come same day. Christian was courteous and after examining our heater determined it needed to be replaced. He explained our options with clarity and answered all of our questions. Once we decided, he had everything with him & got to work; he reviewed the unit with us after it was installed. Our day started with panic & ended in calm. Thank you Christian and Castleworks!

Mike S.
★☆☆☆☆

My water heater has leakage and stop working, I called Castle for help.

1, They charged 3094$(material cost ~ 1100$) for water tank replacement. they claimed their job has high standard.
2, After I agreed they do the Job. They asked to sign a agreement that I acknowledge they do the job urgently and waive my right to cancel the contract.
3, Later they told me that they need turn off the main water valve on the street and any potential water pipe clog indued by water flow back and forth will be customer's responsibility as my house use galvanic water pipe, which are commonly used in old house. (I feel surprised by this statement, If they tell me this before I sign the agreement, I would not let them do this job).
4, After Job done they left. I found the PVC tube extension out side the wall block the ventilation window from the washer/dryer. I usually access to the window to clean the ventilation chamber every two years. Now I can not open that window.
5, I also found the power cable from washer/dryer unplugged without putting it back. Front yard hose was taken off from the faucet without putting it back. I have to put it back with some teflon tape to prevent leakage.
6, Last I found one of my back yard water pipe clogged, No water flow from the faucet. It happen just after this water tank replacement done. I never had this water pipe clog issue in the past 10 years. I talked to them, and they refused to fix this issue as they said it is customer's responsibility due to the galvanic metal water pipe. I feel frustrated and have to spend more money to find plumbers to fix this issue.

Yuna S.
★★★★★

Our water heater broke, and CastleWorks was prompt in getting someone to our house. Luis V was thorough in explaining what the issue was, what possible options I had, and answered all my questions patiently. Replaced the part and fixed the water heater in just about an hour. Thanks Luis!

Craig M.
★★★★☆

Luis saved us. Thankful we were at home when it happened. Called an about our water heater. Luis came out assessed and installed the same day (and on his day off). Luis was so nice, honest, professional, informative and did a fantastic job. Thank you Castleworks and Luis.

Cold Fried C.
★★★★★

Our water heater was old and leaking although one of their servicemen Luis V. helped us out by replacing the water heater quickly giving us all the information we needed. He was very kind and helpful!

Pat M.
★★★★★

My service person, Christian, was friendly and prompt. He did an excellent job of explaining why my water heater was malfunctioning and my options for repairing it. He was able to get the parts and finish the service in just 2 1/2 hours.

Veronica D.
★★★★★

We just had to replace our old water heater today. Christian was very knowledgeable, thorough, and explained everything that was going on with our old water heater, and was able to replace it with a better upgraded one. Thank you Christian for being awesome!

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