Castleworks Water Heaters

Castleworks Water Heaters repairs, installs and maintains conventional and tankless water heaters, and also installs whole house water filtration systems. Customers can book service online or by phone, and the company has a long run of Google reviews praising its technicians for clear explanations and tidy work.

The company offers financing for larger installs and takes calls for after-hours emergencies, with reviewers describing same-day replacements outside regular business hours. The business is at Trinity Court in Dublin, California.