Skip to content
ContractorsRanked

Blue Diamond Heating and AirHVAC contractor in El Cajon, CA

Blue Diamond Heating and Air is an HVAC contractor at 405 Vernon Way, El Cajon, CA 92020, ranked #12 of 482 HVAC contractors in El Cajon and rated 5.0 from 801 Google reviews. Open Monday to Saturday.

El Cajon, CAUpdated 0 paid placements in any rankingHow we rank

Call (619) 903-6401Website ↗

Key facts

Key facts about Blue Diamond Heating and Air
Address405 Vernon Way, El Cajon, CA 92020Get directions
Phone(619) 903-6401
Websitebluediamond.tech
HoursMonday to Saturday: open 24 hours
Google rating5.0 from 801 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves El Cajon and 11 towns within 25 miles: Bostonia, Santee, Winter Gardens, Casa de Oro-Mount Helix, Lakeside, La Mesa, Eucalyptus Hills, Rancho San Diego, Spring Valley, Lemon Grove and La Presa.

Based in El Cajon, CAView on map

Opening hours

Opening hours for Blue Diamond Heating and Air
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayClosed
  • Open evenings — no
  • Open Saturdays
  • Open Sundays — no
  • Emergency service

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range$3,887$5,978$8,073
Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range$2,823$4,814$6,896

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby HVAC contractors

Blue Diamond Heating and Air compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Blue Diamond Heating and Air (this business)—915.0 (801)—YesNo
Same Day Heating, Cooling, Plumbing#10914.8 (1,658)—YesYes8.8 mi
Comfort Bros Heating Air Plumbing & Electrical#11914.9 (424)—YesYes4.2 mi
United Plumbing Heating Air & Electric#13904.9 (1,612)—YesYes13.3 mi

See all 482 ranked HVAC contractors in El Cajon

Questions about Blue Diamond Heating and Air

How is Blue Diamond Heating and Air ranked in El Cajon?

Blue Diamond Heating and Air is ranked #12 of 482 HVAC contractors in El Cajon by CR Score, with 91 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity and profile completeness. No business can pay to change its rank.

What are Blue Diamond Heating and Air’s hours?

Blue Diamond Heating and Air is open Monday to Saturday. Its listed hours are Monday to Saturday, open 24 hours. On Saturdays it is open Open 24 hours and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Blue Diamond Heating and Air serve?

Serves El Cajon and 11 towns within 25 miles: Bostonia, Santee, Winter Gardens, Casa de Oro-Mount Helix, Lakeside, La Mesa, Eucalyptus Hills, Rancho San Diego, Spring Valley, Lemon Grove and La Presa. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.

What do Google reviews say about Blue Diamond Heating and Air?

Blue Diamond Heating and Air has a rating of 5.0 from 801 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Blue Diamond Heating and Air?

Call Blue Diamond Heating and Air on (619) 903-6401. The business is at 405 Vernon Way, El Cajon, CA 92020. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

Own Blue Diamond Heating and Air? Claim this profile.

Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.

Claim this profile