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HVAC Services in Sunnyvale, CA

32 HVAC contractors found

Need emergency service? 10 HVAC providers in Sunnyvale offer 24/7 availability→
HVAC ServiceAC RepairHVAC RepairAC InstallationHVAC MaintenanceCommercial HVACEmergency HVACAC Replacement

Same Day Air Conditioning & Heating

4.7(551)
24/7

“Of six named technicians across reviews, three received 5-star mentions for skill and speed. Positive reviews…”

1212 W McKinley Ave #4, Sunnyvale, CA 94086
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United Plumbing & Water Heaters

5.0(134)
Highly Rated

“All 133 reviews award perfect 5-star ratings, with multiple customers specifically naming Alton for faucet…”

1159 Sonora Ct, Sunnyvale, CA 94086
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Green Tree Household Services

4.9(51)
24/7

“Every one of the 51 reviews assigns 5 stars, an unusually consistent pattern indicating strong customer…”

1363 Lillian Ave, Sunnyvale, CA 94087
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Around the Clock Service, Inc.

4.5(35)
24/7

“Among documented reviews, three of four positive ratings commend specific technicians (TJ, Dylan) and swift…”

1180 Miraloma Way suite b, Sunnyvale, CA 94085
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Precision Air Conditioning & Heating

5.0(24)

“Three of eight reviews specifically name individual technicians who provided service, with Felix highlighted…”

1055 Manet Dr, Sunnyvale, CA 94087
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All Appliance & HVAC Service Inc

4.6(29)

“All six available reviews award five stars, with Frank specifically mentioned in three reviews for same-day…”

1385 La Bella Ave, Sunnyvale, CA 94087
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Pureflow Air Duct and Chimney Cleaning Inc

5.0(20)
24/7

“Every reviewer rated Pureflow a perfect 5 stars, with 6 of 8 reviewers specifically mentioning chimney…”

1219 Townsend Terrace, Sunnyvale, CA 94087
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ClearVent HVAC Solutions

5.0(19)

“Every reviewer awarded a 5-star rating, with customer narratives consistently praising fair pricing and…”

535 E Duane Ave, Sunnyvale, CA 94085
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Balcom Heating & Air

5.0(19)

“Eight of eight reviewers awarded 5 stars, with Carlos specifically named in four reviews as the technician…”

848 W Evelyn Ave suite A, Sunnyvale, CA 94086
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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
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Visionary Air Duct Cleaning

5.0(13)
24/7

“Eight reviewers each awarded 5-star ratings, with three specifically mentioning on-time arrival and…”

870 Elmira Dr, Sunnyvale, CA 94087
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A & A Plumbing

4.4(15)

“Fourteen of fifteen reviewers awarded 5 stars, praising efficiency, same-hour response times, and diagnostic…”

924 E Fremont Ave, Sunnyvale, CA 94087

Spark Heating & Cooling

5.0(10)
24/7

“Eight of eight reviews award five-star ratings, with no lower scores present to balance the feedback. Common…”

760 Peach Ave, Sunnyvale, CA 94087
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Pacific Coast Trane + Specialty A/C Products

4.4(9)

“Four of six reviewers gave five-star ratings, with particular praise for the team's chiller expertise and…”

310 Soquel Way, Sunnyvale, CA 94085
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TWFG Air Duct Services

5.0(5)

“All four client reviews award five stars, citing improved airflow balance, effective allergen reduction, and…”

830 Stewart Dr #270, Sunnyvale, CA 94085
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SwiftBreeze HVAC Solutions

5.0(5)

“All five published reviews award the maximum five-star rating, with customers specifically mentioning…”

1119 Blazingwood Dr, Sunnyvale, CA 94089

HVAC All Seasons

5.0(4)

“All four reviews award five stars, with two clients specifically naming technicians who exceeded…”

1225 Vienna Dr, Sunnyvale, CA 94089
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Jim's Air Conditioning Services

5.0(4)

“All 4 published reviewers awarded 5 stars, with each describing specific service outcomes rather than general…”

917 Quercus Ct, Sunnyvale, CA 94086
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I&C Air Duct Cleaning Service

5.0(4)

“All three reviews award five stars, with universal praise for improved air quality, stronger airflow, and…”

150 Mathilda Pl UNIT 208, Sunnyvale, CA 94086
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Convectek Heating and Cooling

5.0(3)

“All three reviews award five stars, indicating consistent client satisfaction. Both named reviewers, The HVAC…”

100 S Murphy Ave Suite 200, Sunnyvale, CA 94086
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Way Air Duct Service

5.0(1)
1018 E El Camino Real, Sunnyvale, CA 94087
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The Air Cleaning HVAC Experts

5.0(1)
24/7

“All three client reviews award a 5-star rating, with unanimous positive sentiment citing the vent cleaning…”

137 Chestnut Ave, Sunnyvale, CA 94085
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Electrical & Mechanical Solution

5.0(1)
24/7

“The sole client review awards 5 stars and emphasizes timely arrival during an emergency situation,…”

1235 Ayala Dr, Sunnyvale, CA 94086
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Precision AC Repair Sunnyvale

3.0(2)
24/7

“The sole published review assigns one star and notes that work was performed but the problem remained…”

961 Bermuda Ct, Sunnyvale, CA 94086

Trane - Heating & Cooling Services

1.0(1)

“A single 1-star review cites concerns about proprietary equipment pricing and post-purchase service costs,…”

310 Soquel Way, Sunnyvale, CA 94085
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Y.g.a Consulting

0.0

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

1370 Fisherhawk Dr, Sunnyvale, CA 94087
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AC Services

0.0
714 Manzanita Ave, Sunnyvale, CA 94085
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A-1 Air & Heating Sunnyvale

0.0

“This business currently shows zero reviews, indicating it is either newly established or has not yet…”

112 S, Sunnyvale, CA 94086
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RapidCool HVAC Services

0.0
24/7
131 Chestnut Ave, Sunnyvale, CA 94085
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Quick Heating Cooling

0.0

“This contractor has not yet received customer reviews on this directory. Prospective clients seeking feedback…”

396 S Bernardo Ave, Sunnyvale, CA 94086
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HVAC Service Costs in Sunnyvale, CA

Pricing ranges across all HVAC services offered in Sunnyvale.

ServiceTypical RangePrice Points
AC Repair$71–$2,6607 items →
AC Installation$138–$18,4008 items →
AC Replacement$1,932–$14,7205 items →
HVAC Maintenance$15–$7847 items →
HVAC Repair$74–$3,4307 items →
HVAC Service$67–$13,3956 items →
Emergency HVAC$143–$3,3256 items →
Commercial HVAC$2–$76,0007 items →

Prices reflect Pacific coast metro averages based on HomeAdvisor and Angi published cost data. Last updated: April 2026.

HVAC in Sunnyvale, CA: What Homeowners Should Know

Sunnyvale’s mild Mediterranean weather — dry summers averaging about 82°F and cool winters near 42°F, with South Bay heat pockets occasionally pushing past 100°F — creates steady but uneven seasonal demand. That pattern keeps a modest need for both cooling and heating services, and explains why a small pool of five local contractors maintains a strong reputation: average rating 4.8 from 645 reviews and three firms offering 24/7 response. If you search for hvac Sunnyvale options, you’ll find a compact market focused on reliability.

Citywide pricing spans a wide spectrum, from minimal service calls up to full system replacements, ranging roughly $2 to $76,000 depending on scope, equipment and installation complexity. Major projects and high-efficiency retrofits drive the top end of that scale, while routine maintenance and emergency repairs sit near the bottom. Contractors must hold the C-20 Warm-Air Heating, Ventilating, and Air-Conditioning license issued by the California Contractors State License Board, which requires four years of HVAC experience within the past ten years.

Customer highlights were not provided in detail, so observable patterns matter more: competition centers on quick response and seasonal tuning, with several companies promoting 24/7 availability and strong online ratings. That concentrated field encourages firms to specialize in energy-efficient upgrades and fast turnarounds, which shapes how locals evaluate the best hvac Sunnyvale providers.

Frequently Asked Questions

Among 32 HVAC contractors serving Sunnyvale, the top-rated providers average 3.6★ across 977 reviews. The highest-ranked companies on this page are sorted by a combination of rating and review volume, so established contractors with consistent quality appear first. Check reviews, licensing, and response time to pick the right fit for your situation.

All HVAC Contractors in Sunnyvale, CA

Complete directory of 32 contractors — browse alphabetically

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