HVAC Calculators & Tools
Free calculators, sizing guides, and checklists to help Southern California homeowners and business owners understand their HVAC needs. Developed by HVAC professionals serving the Korean-American community since 1989.
Use these tools to estimate costs, make informed decisions, and maintain your heating and cooling systems. 한국어 상담 가능 - 궁금한 점이 있으시면 전화나 문자로 연락 주세요.
Choose Your HVAC Tool
All tools provide estimates based on industry standards and Southern California pricing. Actual costs depend on your specific home, equipment, and installation conditions.
HVAC Installation Cost Estimator
Estimate replacement cost based on home size, system type, and installation complexity
AC Repair vs Replace Calculator
Determine whether repair or replacement makes sense for your AC system
Mini Split Sizing Guide
Calculate BTU needs based on room size, insulation, and usage
SEER Savings Calculator
See how higher-efficiency systems affect your electric bills
Pre-Heatwave AC Checklist
Prepare your AC before Southern California's first 100°F week
Monthly HVAC Maintenance
Simple homeowner maintenance tracker for year-round comfort
Filter Replacement Reminder
Find the right filter replacement schedule for your home
Commercial HVAC Checklist
For restaurants, salons, cafes, churches, and retail businesses
Why Use Sun Tech's HVAC Tools?
Based on Real Experience
These calculators and checklists are based on 35+ years of HVAC service in Southern California. We see the real costs, common issues, and typical scenarios Korean-American homeowners and business owners face.
Honest Estimates
Our tools provide realistic cost ranges and honest recommendations. We don't inflate numbers to create fake urgency, and we don't lowball to get you to call. These are the real numbers.
Local to Southern California
Pricing and recommendations reflect Southern California's climate, building codes, energy costs, and typical home construction. Tools designed for national audiences don't account for our specific needs.
Korean & English Support
After using any tool, call or text us in Korean or English if you have questions. We'll explain the results and help you understand your options without pressure. 한국어로 편하게 상담하세요.
When to Skip the Tool and Just Call
These tools are great for learning and planning, but sometimes you just need to talk to a professional. Call us directly if:
- •Your AC or heating stopped working and you need service today
- •You smell gas or detect unusual odors from your HVAC system
- •You're not sure what service you need and want a diagnosis
- •You have a specific question about your existing system
- •You want an installation estimate for your home, church, restaurant, or business
- •You prefer to discuss options in Korean rather than reading online
Questions After Using a Tool?
Call or text for honest HVAC guidance in Korean or English. 한국어 상담 가능합니다.
Call (626) 704-0540