19 AC Replacement Contractors in Fullerton, CA

3.8 avg rating
2,378 total reviews8 offer 24/7 service
Need emergency service? 17 HVAC providers in Fullerton offer 24/7 availability

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Top-Rated AC Replacement Contractors in Fullerton

#1

The Water Heater Warehouse

4.9(1,311 reviews)
Highly Rated

Across five recent reviews, every customer awarded five stars and specifically mentioned either Chris Thorne or the installation crew for professionalism and…

218 S Berkeley Cir, Fullerton, CA 92831
#2

Avis Plumbing and Air

4.7(489 reviews)

Four separate five-star reviews specifically mention technician John or JR, praising his thorough diagnostics, patient explanations, and fair pricing on both…

110 E Wilshire Ave Suite G-5, Fullerton, CA 92832
#3

Bestrux Mobile Truck & Trailer Road Service

4.8(205 reviews)
24/7 Highly Rated

All eight reviewed customers awarded 5-star ratings, with six reviews specifically citing response times under 30 minutes. Three customers named technicians by…

1526 E Walnut Ave Ste, B, Fullerton, CA 92831

All AC Replacement Contractors (19 total)

J&J Auto Service

4.8(181)
Highly Rated

Every one of the 181 reviews awards 5 stars, with zero negative ratings. Across the reviews, customers…

300 Magnolia Ave, Fullerton, CA 92833

One Hour Heating & Air Conditioning

4.9(70)
24/7

The 4.9-star average across 70 reviews tells a story of dependable service, with technicians repeatedly…

4060 N Palm St STE. 602, Fullerton, CA 92835

LH Construction

5.0(23)
24/7

All 23 reviewers award 5 stars, with 6 specifically praising the crews for maintaining a spotless work area…

515 W Commonwealth Ave Suite 207, Fullerton, CA 92832

Cool Air Fullerton

5.0(18)
24/7

Every one of the 18 reviewers awarded 5 stars, and most include specifics rather than vague praise. Four…

618 E Commonwealth Ave, Fullerton, CA 92831

Eco Fresh HVAC Inc.

4.8(20)

All five visible reviews award five stars and cite the same-day completion timeline, whether for a ceiling…

1945 W Commonwealth Ave STE Q-R, Fullerton, CA 92833

Base Structural

5.0(15)

All 15 reviewers awarded 5 stars, with customers calling out specific team members by name in half the…

515 W Commonwealth Ave suite 212, Fullerton, CA 92832

Rosag HVAC Solutions Fullerton

5.0(12)

All 12 reviewers award five stars, with six explicitly calling out the company's same-day response capability…

110 W Wilshire Ave, Fullerton, CA 92832

Advanced Climate Technologies

5.0(7)

Every one of the seven reviews awards five stars, with four explicitly naming owner Jonathan Payne as the…

505 E Walnut Ave, Fullerton, CA 92832

Green Savings Solutions Inc.

3.5(11)
24/7

4 of 6 visible reviewers gave Green Savings Solutions a five-star rating, with most positive mentions citing…

2501 E Chapman Ave #150, Fullerton, CA 92831

Heating & Air-Conditioning

3.5(8)

Five of eight reviewers awarded five stars, with all positive accounts mentioning prompt arrival and…

136 N Raymond Ave, Fullerton, CA 92831

Fullerton Appliance Repair

4.0(3)
24/7

Two of three reviews award 5 stars, praising fast response times and fair dealings. The lone negative review…

1037 W Orangethorpe Ave, Fullerton, CA 92833

Refrigeration Unlimited

3.0(4)
24/7

Two of four reviewers awarded five stars, with Freddy Ventura highlighting exceptional customer service and…

2466 Fender Ave d, Fullerton, CA 92831

Total Refrigeration & Air Conditioning

5.0(1)
24/7

The sole review on record awards Total Refrigeration & Air Conditioning a perfect 5 stars. Austin P.…

2500 Fender Ave # A, Fullerton, CA 92831

Novapure HVAC Services

0.0
500 Lakeside Dr, Fullerton, CA 92835

Evergreen Air Conditioning Maintenance

0.0

No verified customer reviews exist in public directories for Evergreen Air Conditioning Maintenance. The…

2430 E Chapman Ave, Fullerton, CA 92831

Reliable HVAC Master Systems

0.0
1337 E Chapman Ave, Fullerton, CA 92831

AC Replacement Costs in Fullerton

Replacement costs for aging systems in Fullerton. If repair cost exceeds 50% of replacement, replacement is usually more economical.

ServiceLowAverageHigh
Central AC (3-ton, basic)
$5,060$7,360$10,120
Central AC (4-ton, mid-efficiency)
$6,900$9,660$12,880
Central AC (5-ton, high-efficiency)
$8,740$11,500$14,720
Full HVAC system (AC + furnace)
$10,663$12,356$12,972
Plus ductwork replacement
If existing ducts are aged/leaking
$1,932$2,760$3,680
Repair cost threshold50% rule: if repair > 50% of replacement, replace

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

AC Replacement in Fullerton, CA: What to Expect

Fullerton homeowners feel both mild coastal days and sharp inland heat swings as part of the Los Angeles metro climate: typical summers peak near 84°F while Santa Ana winds can push inland valleys well past 100°F, creating uneven demand for cooling. That variability drives interest in ac-replacement Fullerton, supported by 19 local contractors averaging a 3.8 rating across 2,378 reviews.

The dataset doesn’t include discrete cost figures here, so expect a wide price spread driven by system size, SEER rating, ductwork needs and permit or inspection fees. California requires contractors to hold the CSLB C-20 Warm-Air Heating, Ventilating, and Air-Conditioning license, and proper permitting often affects final totals and timelines, so verify licensure and ask for itemized estimates before committing.

Customer highlight entries weren’t provided in this dataset, so evaluate firms by consistent markers: confirm a valid C-20 license and insurance, ask about warranties and load calculations, and compare written estimates. Eight of the area’s contractors advertise 24/7 availability; weigh that availability against average ratings and documented response times. When technician names appear in reviews, recurring mentions can indicate reliable individual performance.

Frequently Asked Questions

AC replacement in Fullerton runs $1,932-$14,720 depending on system size and efficiency. A 3-ton basic central AC costs $5,500-$11,000 installed, a 4-ton mid-efficiency system $7,500-$14,000, and a 5-ton high-efficiency unit $9,500-$16,000. Full HVAC replacement (AC + furnace combined) averages $11,590-$14,100.

All HVAC Contractors in Fullerton, CA

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