Heise's Plumbing recently completed a professional undercounter ice machine repair and descaling service for a residence in the Pacific Heights neighborhood of San Francisco.
The Problem
The homeowner reported that their Sub-Zero ice maker had completely stopped producing ice, while their secondary U-Line ice maker was operating at a significantly reduced capacity due to severe scale buildup.
Our Inspection
Our expert technician diagnosed a misaligned curtain and control switch issue on the Sub-Zero unit, resolving it after consulting manufacturer technical support and restarting the system.
Our Solution
Additionally, we initiated a comprehensive descaling and maintenance schedule for both machines, ordering specialized cleaning solutions to clear mineral scale from the evaporator plates and water lines.
Final Results
The entire ice production system was thoroughly tested, safety-cleared, and verified for safe, reliable, and hygienic operation.
Signs of Hidden Plumbing Leaks
Hidden water leaks can cause serious structural damage before they are discovered:
- Utility Bill Spikes: Sudden, unexplained increases in your monthly water bills.
- Musty Odors: Persistent musty smells in basements, bathrooms, or near cabinets.
- Wall or Floor Discoloration: Damp, bubbling paint, warped baseboards, or soft spots on flooring.
- Low Water Pressure: Sudden drop in pressure throughout the home or at specific fixtures.
Why Prompt Professional Repair is Crucial
Unresolved water leaks lead to structural wood rot, paint failure, ruined subfloors, and toxic black mold growth. Seeking professional diagnosis and repair prevents minor issues from turning into catastrophic home damage.
Plumbing Considerations in Pacific Heights
Pacific Heights features hilly topography and historic estates with older plumbing infrastructures, where regular inspections can prevent sudden water line or sewer issues.


