Best Mini Split / Ductless AC Installations in Diamond Bar, CA (2026)

5 verified businesses · Sorted by rating & reviews

Also in Diamond Bar

Air Duct CleaningHVAC InstallationHVAC Repair
1

Southwest Heating & Air Conditioning

Google★★★★½4.9339 reviews
Yelp4.5 stars4.5544 reviews
→ Stable·3 mo: 5★ (7)·6 mo: 5★ (30)
Staff:+Bobby (2)owner (2)
622 Alpine St, Los Angeles, CA 90012
+1310-867-0703
HVAC contractor
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Southwest Heating & Air Conditioning photo 1Southwest Heating & Air Conditioning photo 2Southwest Heating & Air Conditioning photo 3Southwest Heating & Air Conditioning photo 4Southwest Heating & Air Conditioning photo 5Southwest Heating & Air Conditioning photo 6
2

Manny's Heating & Air Conditioning

Google★★★★½4.8210 reviews
↑ Improving·3 mo: 5★ (5)·6 mo: 5★ (10)
2761 E Slauson Ave, Huntington Park, CA 90255
+1323-774-4032
HVAC contractor
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3

GR Air Conditioning

Google★★★★★546 reviews
→ Stable·3 mo: 5★ (1)·6 mo: 5★ (1)
2440 Chelsea St, Los Angeles, CA 90033
+1213-469-8632
HVAC contractor
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4

Top Air Conditoning

Google★★★★½4.866 reviews
940 E 12th St, Los Angeles, CA 90021
+1213-649-2460
HVAC contractor
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5

Covac Ductless Mini-Split Air Conditioning

Google★★★★★513 reviews
→ Stable·3 mo: 5★ (1)·6 mo: 5★ (1)
2954 W Valley Blvd, Alhambra, CA 91803
+1626-823-2267
HVAC contractor
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