Next Day Air & Heating

From first phone call to final walkthrough, Next Day Air & Heating treats every comfort challenge with careful workmanship and clear communication. Our team handles full-system HVAC assessments, AC Repair & Installation tuned to your space and budget, and Heating Repair & Installation that prioritizes reliability when temperatures dip. If your system needs an upgrade, we plan and execute heating installation with attention to airflow, duct condition, and energy efficiency goals. We also improve Indoor Air Quality with filtration and ventilation solutions designed to reduce dust, odors, and allergens, and we service Water Heaters to restore steady hot water and dependable performance. Whether you’re dealing with uneven cooling, rising energy bills, or a unit that won’t start, we diagnose the issue and explain options before work begins. Proud to support homes and small businesses in Cotati, California, we show up prepared, respect your schedule, and stand behind the work so your system runs smoothly season after season.