5 AC Repair Contractors in Sunnyvale, CA

4.8 avg rating
645 total reviews3 offer 24/7 service

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Top-Rated AC Repair Contractors in Sunnyvale

#1

Same Day Air Conditioning & Heating

4.7(551 reviews)
24/7

Of six named technicians across reviews, three received 5-star mentions for skill and speed. Positive reviews cite rapid response and diagnostic expertise,…

1212 W McKinley Ave #4, Sunnyvale, CA 94086
#2

Around the Clock Service, Inc.

4.5(35 reviews)
24/7

Among documented reviews, three of four positive ratings commend specific technicians (TJ, Dylan) and swift service timelines, while negative feedback cites…

1180 Miraloma Way suite b, Sunnyvale, CA 94085
#3

All Appliance & HVAC Service Inc

4.6(29 reviews)

All six available reviews award five stars, with Frank specifically mentioned in three reviews for same-day commercial refrigeration response and for sourcing…

1385 La Bella Ave, Sunnyvale, CA 94087

All AC Repair Contractors (5 total)

Grumpy's HVAC

5.0(17)

All four featured reviewers award 5 stars, with three specifically naming David and praising his honesty,…

493 Vine Ave, Sunnyvale, CA 94086

Express Heating & AC Repair

5.0(13)
24/7

All 8 reviewers with written feedback awarded 5 stars, with 4 explicitly mentioning same-day or immediate…

1370 Fisherhawk Dr, Sunnyvale, CA 94087

AC Repair Costs in Sunnyvale

Typical repair costs for Sunnyvale homeowners, by problem type.

ServiceLowAverageHigh
Diagnostic / service call
Usually credited toward repair
$71$114$190
Refrigerant recharge (R-410A)
$143$333$665
Capacitor replacement
$114$238$428
Fan motor replacement
$238$428$665
Compressor replacement
$760$1,710$2,660
Evaporator coil repair
$380$855$1,425
Labor (hourly rate)
Per hour during business hours
$71$105$143

Prices reflect Pacific coast metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.

AC Repair in Sunnyvale, CA: What to Expect

Sunnyvale sits inside the San Jose metro area with a mild Mediterranean climate—dry summers averaging about 82°F and winters near 42°F—but South Bay heat pockets can surge past 100°F during heat waves, which spikes demand for prompt maintenance and fixes. Local homeowners and businesses searching for ac-repair Sunnyvale find five contractors serving the city, averaging a 4.8 rating from 645 reviews, and three firms advertise 24/7 availability.

Concrete cost figures for specific repairs aren’t provided here, and pricing in Sunnyvale varies with parts, refrigerant type, system age and labor. Typical top-cost items include compressor replacement, refrigerant recharge and major control-board work, but final estimates should come from on-site diagnostics. Installers working in the area must hold the California C-20 license from the Contractors State License Board, which is a useful credential to confirm before accepting a quote.

Customer highlight data wasn’t supplied, so look instead for consistent themes in reviews: response time, clarity of estimates, warranty terms and post-service follow-up. Prioritize technicians who document diagnostic findings, show licensing and insurance, and can explain options for repair versus replacement. Given the region’s occasional extreme heat, verify emergency response capability and parts availability before scheduling work.

Frequently Asked Questions

AC repair in Sunnyvale typically costs $71-$2,660 depending on the problem. Diagnostic calls run around $75-$200, refrigerant recharges $150-$700, capacitor replacement $120-$450, and compressor replacement $800-$2,800. Most contractors apply the diagnostic fee toward the final repair cost if you proceed.