Light Commercial HVAC Services
DG Heating & Air Conditioning provides professional commercial HVAC solutions for businesses throughout San Jose and the Bay Area. From installation and system upgrades to repairs and maintenance, we keep your building comfortable and operating efficiently.
HVAC Solutions Designed for Businesses
Reliable Heating and Cooling for Commercial Spaces
Businesses rely on dependable heating and cooling to keep employees comfortable, customers happy, and operations running smoothly. DG Heating & Air Conditioning provides commercial HVAC services tailored to offices, retail spaces, multi-unit residential buildings, and light industrial facilities throughout San Jose. Our experienced technicians install, repair, and maintain commercial-grade HVAC systems capable of handling larger spaces and complex building layouts. Whether you manage a boutique storefront or a multi-tenant commercial property, we deliver dependable solutions that ensure consistent comfort and efficiency.
A Trusted Commercial HVAC Partner
Expertise for Complex HVAC Systems
Experience With Commercial Systems
We install and service rooftop units, multi-zone systems, and advanced commercial HVAC equipment.
Proven Project Experience
Our portfolio includes large-scale residential and commercial projects, including multi-unit building installations with dozens of HVAC systems.
Energy-Efficient System Upgrades
We help businesses improve efficiency and reduce operating costs with modern HVAC equipment and smart control systems.



Prevent unexpected system failures with professional HVAC maintenance. Our seasonal service helps keep commercial heating and cooling systems operating efficiently.
Air Conditioning Repair & Installation
Our technicians repair, install, and upgrade commercial air conditioning systems to ensure consistent cooling for offices, retail spaces, and multi-unit buildings.
Heating Repair & Installation
From furnace repairs to complete heating system installations, our team ensures reliable warmth and efficient heating performance for commercial buildings.
Indoor Air Quality Systems
Improve workplace comfort and health with whole-building air purification, filtration systems, and ventilation upgrades designed for commercial HVAC systems.
Duct Removal & Replacement
We inspect, and replace aging commercial duct systems to improve airflow, efficiency, and indoor air quality throughout your building.
Ductless Mini-Split Systems
Ductless mini-split systems provide flexible heating and cooling for offices, server rooms, additions, or commercial spaces without ductwork.
Looking for a reliable commercial HVAC contractor?
DG Heating & Air Conditioning provides professional commercial HVAC services for offices, retail spaces, and multi-unit buildings across the Bay Area.
Do you provide commercial HVAC maintenance plans?
Yes. We offer preventative maintenance programs designed to reduce downtime and ensure commercial HVAC systems operate reliably throughout the year.
Can you replace older commercial HVAC systems?
Yes. We upgrade outdated systems with modern high-efficiency equipment designed to improve comfort while reducing energy costs.
Do commercial HVAC systems require permits in California?
Many installations and system replacements require permits. Our team can guide you through this process."


