Trust & Licensing
72/100
Licensing, insurance, bonding, BBB record, and verified credentials.
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Blue Diamond Heating And AirHVAC in El Cajon · Reviews & Verification
El Cajon, CA
Scored Jun 9, 2026
C
392/700
CSLB licensed, bondedTradeScore measures verifiable business health, not workmanship.
HVAC$Worth It53 / 91 checks
TradeScore™
Grade Breakdown
How the TradeScore works
We score this contractor out of 700 across 7 categories using public data: licensing, reviews, their website, and more. Higher is better. Each bar below is that category out of 100. Open a card to see the checks behind it.
Online Presence
44/100
Website quality, page speed, structured data, and Google profile completeness.
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Reputation
100/100
Ratings, review volume, recency, owner responsiveness, and sentiment.
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Pricing & Value
75/100
Transparency, financing options, and what customers say about cost.
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Service Quality
36/100
Warranties, guarantees, emergency service, certifications, and customer care.
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Website Health
65/100
Technical site fundamentals, Core Web Vitals, semantic HTML, sitemap, canonical URLs, Open Graph + Twitter Card metadata, content freshness, named services.
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Smart Search
0/100
How well your site is structured for AI search engines to read and recommend, LocalBusiness + Review + FAQ + Service/Product schemas, llms.txt, NAP consistency.
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What Customers Say
Reviews
Review summary
Blue Diamond Heating And Air is viewed as fair and competitive on pricing. Reviewers consistently highlight strong recommendations. A few mention scheduling delays. Several reviewers note the quality of work justifies the cost.
The themes below are summarized from the actual text of those reviews.
Summarized from 850 Google and 101 Yelp reviews
What customers love
- Strong recommendations35Google 4 · Yelp 31
- Professional technicians30Google 6 · Yelp 24
- Clear communication19Google 3 · Yelp 16
- Fast response times18Google 6 · Yelp 12
- Clean work areas17Google 2 · Yelp 15
Common concerns
- Scheduling delays5Yelp 5
- Upselling on some visits2Yelp 2
- Quality concerns2Yelp 2
2 months ago
Huge shoutout to Blue Diamond Heating & Air Conditioning and their amazing team, Junior and Eddie! ⭐⭐⭐⭐⭐ They replaced our thermostat wire and installed a new thermostat, and the whole experience was fantastic from st…
Rich Cvia Google
2 months ago
The Blue Diamond team is great & really helpful. Alecko came out as scheduled for a maintenance call & he was kind enough to clean our exterior unit as well. This sort of service is above & beyond and we really appre…
Will Healeyvia Google
2 months ago
Mario was my Rep and he was EXCELLENT! Full of many years of work technical experience & expertise and the BEST Customer Service that was awe-inspiring. He was professional, courteous, constantly communicated to me a…
Marcivia Google
6 months ago
Junior and Eddie did an excellent job removing my dead dyi install and replacing it with a new mini split. Great work and great communication. It’s really worth it to have a professional do your installation.
Kurt Megertvia Google
2 months ago
I had a little AC leak which cause the unit to stop working. I had Ozzy come by on time and prompt. He was quick to diagnose the issue, had some recommendations, and trusted his advice. Ozzy understood my dilemma w…
Jamie Schroer Culbertvia Google
From Their Google Profile
Photos
What They Do
Services, specialties, and brands
Services
HVACAC RepairIndoor Air QualityHeatingMini SplitDuctlessHeat Pump
Specialties
What they're known for.
Indoor Air Quality
Works With
Daikin
TradeScore ratings are generated algorithmically from publicly available data including California CSLB license records, Better Business Bureau filings, Google Business Profile data, and automated website analysis. Scores reflect the data available at the time of scoring (see date above) and are updated periodically. Scores are informational tools designed to help homeowners research contractors. They are not endorsements, guarantees of work quality, or recommendations to hire or avoid any contractor. Data accuracy depends on public sources and may not reflect recent changes. If you are a contractor and believe your information is inaccurate, visit tradesadvisory.com/dispute to request a review. See our full Terms of Service for details.