CastleWorks Home Services

★★★★☆ 3.8 / 5 (27)
Emergency Call


: 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. We specialize in numerous services, from tankless and tanked water heater installation and repair for residential and commercial clients to plumbing, leak detection, HVAC services, furnace installation and repair, air conditioning, and heat pump services.

We offer free in-home estimates for installation costs and thorough diagnostics for any water heater issues. Our approachable dispatchers will share transparent pricing, and our certified, insured technicians will ensure your peace of mind with our 100% Satisfaction Guarantee. Rely on us to suggest the best and most cost-effective options for your residence.

Our services include repair and replacement for water heaters, plumbing, drains, HVAC, leak detection, rooter services, and additional offerings. The CastleWorks family consists of a growing network of home service companies. We started with a collective of inspired entrepreneurs. Each of these companies emerged from modest beginnings, building their family-owned businesses from the ground up in their respective areas of expertise. Over the years, their successful ventures have delivered expert plumbing, air conditioning, heating, and water heater services across California. Their commitment to quality and customer care has led each company to develop specialized training and employment opportunities for their technicians and staff.

CastleWorks' journey progresses as we help homeowners regain their peace of mind through exceptional home service solutions characterized by unmatched skill, 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

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!

Nell B.
★★★★★

On 12/20/2023, in the evening, I phoned Castleworks Home Services because my water heater was leaking and we were getting ready to leave for vacation in a few days...it was an emergency and they gave me their first appointment at 9am the next day. The technician that came to my home was Luis Valencia and my husband and I cannot say enough about the time he took to explain what he was doing (we're senior citizens). He was efficient and did an extraordinary neat job. He cleaned everything up before leaving, answered all of our questions and left his card for reference. We love the water heater and especially the automatic shutoff feature. Your company is very fortunate to have such a customer-focused team member.

Thank you so much...and the water heater works great!
N&J

Michael S.
★★★★★

I called the number on my water heater ('Affordable Water Heaters' the last time I called) to schedule a service visit. Nothing was wrong, and I wasn't in a rush, so we scheduled a time for someone to come out a few days later.

""Rafa"" (Raphael) came by on time, as promised, and performed the water heater flush and inspection. He was friendly, courteous, and clean. He advised me on some minor issues he found but didn't try to sell me anything--just a super nice guy.

Great service for a fair price from a friendly professional. What more could you ask for?

j w.
★★★★★

I called them to replace a water heater. The technician was Luis Valencia. He was knowledgeable and very professional. He installed the new water heater and got the job done.

eric o.
★★★★★

We originally called for an emergency water heater replacement. The install was smooth and they were very fast and efficient. We found out they also have a separate plumbing crew and set up an appointment for them to check our clogged washing machine drain. They sent Johnny out who was thorough with his explanations of the possibilities of the job. I know nothing about plumbing but could tell Johnny was confident in he's assessment of what needed to be done. He was quick and efficient, and even came earlier than the scheduled time which worked out perfect. I highly recommend them and would definitely use there services again if/when needed.

Brenda G.
★★☆☆☆

I made contact through the website. I got an immediate return call and an appointment with a 4 hour window. After a four and a half hour wait I got a call saying the technician was on his way. He came in looked at the hot water heater. It was really difficult to understand what he was saying. His Englush was not proficient at all. He really couldn't explain to me what he needed to do but he managed to let me know how much the repairs would cost.

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