Keeping Korean-American Homes Comfortable Across Southern California
남가주 한인 가정과 비즈니스를 위한 믿을 수 있는 냉난방 서비스
Family-owned HVAC service with Korean and English support for AC repair, mini split installation, heating, and full system replacement.
Built on trust, service, and word-of-mouth.
A Korean-American Family Business Serving Our Community
For over 35 years, Sun Tech Air Conditioning has been the HVAC company Korean-American families trust when their air conditioning breaks down, their heating stops working, or they need expert advice about system replacement.
We understand that HVAC repairs can feel confusing and stressful - especially when technical terms are explained in a language that's not your first. That's why our technicians explain everything clearly in both Korean and English, so you and your family can make confident decisions.
We don't pressure you into unnecessary upgrades. We give you honest options, clear pricing, and the same service we'd want for our own families. That's why so many customers find us through church recommendations, neighbor referrals, and family connections.
SoCal
Support
Service
How Families Find Sun Tech
We're grateful to serve families who find us through trusted community connections
Our HVAC Services
Complete heating and cooling solutions explained clearly in Korean and English
AC Repair
Fast, honest AC repair when your family needs cooling most. We explain everything clearly in Korean and English.
Mini Split Installation
Perfect for room additions, garages, and homes without ductwork. We help you choose the right size and brand.
AC Replacement
When it's time to replace, we provide clear options and honest recommendations your family can trust.
Heating Repair
Keep your family warm all winter with reliable furnace and heating system repair and maintenance.
Commercial HVAC
Supporting Korean restaurants, salons, churches, and small businesses throughout Southern California.
Pre-Heatwave Check
Schedule your AC tune-up before the first 100°F week. Prevent breakdowns when you need cooling most.
When Your AC Stops Cooling
Start with safe homeowner checks, then call for repair if the system needs professional diagnosis.
Why Is My AC Not Blowing Cold Air?
A calm homeowner guide for Southern California homes when the AC is running but the air from the vents is not cold.
Read guideAC Running But Not Cooling the House
Use this guide when the AC seems to run all day but the temperature in the home barely drops.
Read guideAC Not Turning On? Safe Troubleshooting
A safe first-pass checklist for homeowners when the AC does not start at all.
Read guideAC Leaking Water Inside
Use this guide when water is dripping near the indoor unit, ceiling, closet, attic, or furnace area.
Read guideTop HVAC Service Pages
Direct links for urgent repairs, cost estimates, installation questions, and local service pages.
Serving Korean-American Neighborhoods Across Southern California
From Koreatown to Fullerton, Rowland Heights, Diamond Bar, Chino Hills, Irvine, Anaheim, Brea, Riverside, and beyond
HVAC explanations should not feel confusing
냉난방 설명, 한국어로 편하게 들으세요
Many homeowners feel pressure or confusion when dealing with HVAC repairs. Sun Tech explains options clearly in Korean and English so families can make confident decisions. No technical jargon, no pressure - just honest advice you can understand.
한국어 서비스 자세히 보기Why Korean-speaking families choose us:
- 설명을 한국어로 들을 수 있어요
- Parents can understand all options clearly
- No confusion about technical terms
- 가격과 옵션을 투명하게 설명해요
- Honest advice, never pushy sales
- 커뮤니티 신뢰와 입소문
Before the first 100°F week, check your AC
폭염 전에 에어컨을 미리 점검하세요
When summer heatwaves hit Southern California, HVAC companies are overwhelmed with emergency calls. Wait times can be days. Protect your family by scheduling your AC check before everyone else's breaks down.
Schedule Pre-Heatwave CheckHVAC Support for the Small Businesses That Hold Our Community Together
We understand Korean restaurants, salons, cafes, churches, and small businesses
Clear HVAC Help Before You Commit
Sun Tech focuses on clear estimates, Korean/English communication, and honest repair-versus-replacement guidance for homes, churches, restaurants, and commercial spaces.
Text photos of the indoor unit, outdoor unit, thermostat, and equipment labels for faster estimate guidance.
Discuss repair, replacement, rooftop unit, mini split, or multi-zone options before approving work.
Cash, check, and major credit cards are accepted through Square.
Need HVAC service for your family or business?
Call or text for Korean/English support • 한국어 상담 가능