Ice Machine Repair in Los Altos

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Updated October 14, 2026

Ice machines on Cal Water in Los Altos

For Los Altos, the closest NOAA 1991-2020 normal is a 79.4°F average July high (Palo Alto (nearest NOAA normals station)).

Los Altos is served by Cal Water's Los Altos Suburban district, and its groundwater is among the hardest in the area. Cal Water's 2025 report lists groundwater hardness of 137 to 440 ppm, averaging 305 ppm, which is very hard. Its purchased Valley Water surface water was much softer, at 96 to 98 ppm. Cal Water has asked regulators for permission to study hardness mitigation.

Very hard water is hard on ice machines. Scale builds quickly on the evaporator plate, water distribution tubes and float or probe sensors, which lengthens freeze cycles and causes harvest problems. In Los Altos, descaling more often than the manual's minimum is usually justified.

A scale-inhibiting filter sized for the machine helps a lot, as long as cartridges are changed on time. We also check the water inlet valve screen, which can clog with scale and reduce water flow.

Cafes and restaurants downtown often have machines in tight spaces with little airflow. A clean condenser and enough clearance keep production up, especially on warm summer afternoons.

Ice machine problems we see in Los Altos

• Some of the hardest water nearby. Cal Water's Los Altos Suburban district reported groundwater from 137 to 440 ppm, averaging 305 ppm. Machines on that water scale fast, and descaling more often than the manual's minimum is usually needed.
• Inlet valve screens and probes. Scale collects on inlet screens and water-level probes as well as the evaporator. Slow fills and erratic harvests follow.
• Filters with scale inhibition. A scale-inhibiting filter sized to the machine slows buildup, but only when cartridges are changed on time.
• Tight cafe installations. Downtown cafes fit machines into small spaces with little airflow. A clean condenser and the right clearance keep production up on warm days.
• Surface water periods. When more purchased Valley Water reaches taps, hardness falls near 97 ppm and scale slows. The supply mix is why a fixed schedule may over- or under-clean.
• Bin hygiene. Santa Clara County inspectors check bins for slime and mold. A cleaning log near the machine helps.

What to check at a Los Altos ice machine before calling

1. Check the filter's change date.
2. Look for white crust on the evaporator and probes.
3. Make sure the machine has clearance on all sides.
4. Time one freeze cycle against the manual.

A year-round plan for a Los Altos ice machine

Because Los Altos groundwater is so hard, plan to descale every two months or so, and change scale-inhibiting filters on time. Check the inlet valve screen during each descale. Clean the condenser monthly in tight cafe spaces. Log every sanitizing for Santa Clara County inspectors, and time a freeze cycle each month as an early warning of scale.

At a glance: ice machine repair in Los Altos

• Who inspects a Los Altos ice machine: Santa Clara County Department of Environmental Health (green, yellow or red placards)
• Ice machine heat load in Los Altos: 79.4°F average July high, Palo Alto (nearest NOAA normals station), NOAA 1991-2020
• Los Altos ice machine water supply: Cal Water's Los Altos Suburban district; hardness groundwater 137-440 ppm, surface 96-98 ppm (2025)
• Ice machine calls in Los Altos: 8 AM-5 PM, emergency ice machine service until 9 PM
• Los Altos ice machine technicians: EPA 608 certified, CA Lic. #776244
• Ice machine repair warranty in Los Altos: 1 year, parts and labor
• Ice machine service near Los Altos: Mountain View, Palo Alto, Cupertino

Los Altos inspections and your ice machine

Routine visits by the Santa Clara County Department of Environmental Health cover every Los Altos ice machine. The Los Altos ice machine placard scale: green (Pass), yellow (Conditional Pass) or red (closed until corrected). For a Los Altos ice machine, ice counts as food, so the bin and food zone get checked.

About 1-800-Cool-Aid in Los Altos

Los Altos ice machine repair is handled by 1-800-Cool-Aid, CA Lic. #776244, a family company founded in 1966. Our Los Altos technicians are EPA 608 certified, and every ice machine repair carries a 1-year parts and labor warranty. Call about a Los Altos ice machine 8 AM-5 PM; emergency ice machine service runs until 9 PM, and our Vietnamese-speaking staff can help Los Altos owners.

While a ice machine visit in Los Altos is on the way, read about slow production, slime and mold, air-, water- and remote-cooled machines, or open the Ice Machine Guide.

Near Los Altos

Back to the Los Altos service page: Los Altos HVAC and refrigeration. Neighbors of Los Altos we also serve: Mountain View ice machine repair, Palo Alto ice machine repair, Cupertino ice machine repair.

Frequently asked questions

Sources

• Santa Clara County: consumer-friendly restaurant scoring system
• Santa Clara County restaurant grading (county PDF)
• NOAA 1991-2020 normals, Palo Alto (nearest NOAA normals station)
• Cal Water 2025 Water Quality Report, Los Altos Suburban
• EPA technology transitions: HFC restrictions by sector

Published by Cool Aid Air Conditioning & Refrigeration, a family business serving the Bay Area since 1966. Owner Jim McKinny holds California C-20 and C-38 contractor licenses and EPA Universal certification. Repairs we complete carry our 1-year parts & labor warranty.