Grandmark Service Company - Visalia's Best HVAC Services

We offer comprehensive HVAC services including installation or replacement of systems, repairs for issues like refrigerant leaks or faulty components, and regular maintenance to keep your system running efficiently. With over 25 years of experience, our licensed professionals ensure your home stays comfortable year-round.

For refrigerant leaks, our technicians perform thorough diagnostics to locate and seal leaks, then recharge the system to restore cooling efficiency. For clogged air filters—a frequent issue in Visalia's dusty climate—we replace them during maintenance visits and advise on proper filter care to improve air quality and prevent system strain.

Yes, we provide HVAC system maintenance to help extend the life of your equipment and prevent costly repairs. Our maintenance includes cleaning, inspections, and tune-ups tailored to Visalia's seasonal needs, ensuring your system operates reliably. We also offer transparent communication and free estimates for all services.