Local HVAC Solutions Designed for Comfort and Efficiency
Los Altos is a city that values the balance of small-town charm and Silicon Valley innovation, historic apricot orchards and modern, energy-conscious homes. With its mild climate and tree-lined neighborhoods, comfort here often depends on having an HVAC system that quietly does its job, keeping your home efficient and your air fresh year-round.
At Sandium Heating & Air Conditioning, we’re proud to be the HVAC company in Los Altos, CA, that homeowners rely on for reliable, high-performance systems. Since 2001, we’ve served the greater Bay Area with engineering-driven HVAC solutions designed for real comfort and sustainability. Whether you need AC repairs, a furnace upgrade, or advanced indoor air quality services, our licensed and factory-trained technicians deliver precise results that last.
Our HVAC Service Processes
At Sandium, we combine technical precision with customer-first HVAC services in Los Altos, CA. Every system we repair, install, or maintain follows a proven process designed to deliver lasting comfort, energy efficiency, and peace of mind for your Los Altos home.
Cooling Services
AC Repair – Our Process
- Initial Diagnosis
- System Testing
- Clear Recommendations
- Precision Repairs
- Post-Repair Testing
AC Replacement – Our Process
- Home Assessment
- System Sizing & Selection
- Proposal & Financing Options
- Professional Installation
- System Start-Up & Demo
AC Maintenance – Our Process
- Filter Check & Replacement
- Coil & Condensate Cleaning
- Refrigerant & Thermostat Testing
- Electrical Inspection
- System Performance Report
Ductless Mini Splits – Our Process
- Zoning Consultation
- Unit Selection
- Installation
- Remote & Smart Controls Setup
- System Test & Walkthrough
Heating Services
Furnace Repair – Our Process
- System Inspection
- Component Testing
- Quote & Explanation
- Repair Execution
- Full Function Test
Furnace Installation – Our Process
- Load Calculation & Sizing
- Product Recommendations
- Old System Removal
- Installation & Connection
- System Testing & Walkthrough
Furnace Maintenance – Our Process
- Burner & Ignition Inspection
- Airflow Testing
- Safety Controls Review
- Filter Cleaning/Replacement
- Final Report
Heat Pumps – Our Process
- Consultation & Load Analysis
- System Recommendation
- Old System Removal (if applicable)
- Installation & Smart Setup
- Performance Testing
Indoor Air Quality Services
Indoor Air Quality Testing – Our Process
- Initial Assessment
- Air Sampling & Monitoring
- Report & Recommendations
- Optional Equipment Pairing
- Follow-Up Testing (optional)
Home Energy Audit – Our Process
- Exterior & Attic Inspection
- Duct & Ventilation Testing
- Blower Door Test (if applicable)
- System Efficiency Review
- Report & Upgrade Plan
Air Duct Repair – Our Process
- System Evaluation
- Leak Detection
- Sealing & Insulation
- Post-Repair Testing
Air Duct Installation – Our Process
- Duct Design & Planning
- Material Selection
- Installation
- Insulation & Sealing
- Testing & Balancing
Frequently Asked Cooling, Heating, & Indoor Air Quality Services
What are the most common problems that cause AC systems to stop working?
Common issues include refrigerant leaks, dirty filters, and electrical failures. Scheduling regular maintenance helps prevent these from escalating into larger repairs.
How frequently should HVAC maintenance be done?
For the best performance, schedule maintenance from an expert HVAC company in Los Altos, CA, at least once per year, ideally in spring for cooling systems and fall for heating.
What are the warning signs that something’s wrong with my HVAC system?
Rising utility bills, uneven temperatures, or unusual noises often indicate system inefficiency or mechanical issues that require attention.
What can I do to boost indoor air quality at home?
Installing high-efficiency filters, scheduling duct cleaning, and using air purifiers can all improve IAQ, especially during Los Altos’ pollen season.
Why are my energy costs high if my HVAC system is working?
Leaks, poor insulation, and older equipment can waste energy even when systems run normally. Our home performance audits identify and correct these inefficiencies.
How do I figure out the right HVAC system size for my home?
Our engineers calculate the correct system size using precise load calculations based on your home’s square footage, layout, and insulation levels.
Schedule Your HVAC Services Today!
When it comes to reliable HVAC services in Los Altos, CA, homeowners trust Sandium Heating & Air Conditioning for transparent pricing, certified expertise, and advanced system design. From fast AC repairs to long-term comfort solutions, we deliver quality that’s built to last.
Contact our friendly team today for free estimates, flexible financing options, and expert guidance on improving your home’s comfort and energy efficiency. Sandium Heating & Air Conditioning, where technology, craftsmanship, and care come together to create the perfect indoor environment for every Los Altos home.
