Repairs and diagnostics
Describe the loss of heat, weak cooling, unusual sound, or control problem. We evaluate the system and explain the work needed to address the findings.
HVAC repair
Serving San Rafael
Service for homes and occupied workplaces
For a dependable heating and cooling service in San Rafael, residents trust Diamond HVAC Services Inc. We provide expert solutions to keep your home comfortable year-round, from summer heat to winter chill. Schedule your service with our expert team today!
A San Rafael service request may involve a home, a storefront, or equipment supporting several occupied rooms. Tell us whether the failure is continuous or only appears during busy hours. The equipment type and how the building is used help define a useful first visit.
Our team serves your property from Petaluma. Meet Diamond HVAC and learn about our approach to heating, cooling, and ongoing equipment care.
How we can help
HVAC services in San Rafael
For commercial work, one thermostat can serve spaces with very different loads. We can discuss the layout, recent equipment changes, and operating schedule. For a home, it is equally useful to know whether the whole system is affected or only a particular room.
Installation and replacement
Compare equipment with the rooms, distribution, placement, and supporting work included. Discuss both heating and cooling goals before settling on a system.
HVAC installationMaintenance and controls
Plan equipment care around the system and its instructions. Ask about filter care, thermostat use, and issues that need separate repair rather than routine maintenance.
HVAC maintenanceExplore options for your property
Request service in San RafaelPlanning a visit
Tell us about the equipment and access
Identify shared roof or mechanical-room access and the authorized building contact. If you manage several systems, label which unit serves the affected space so a visit starts with the correct equipment.
We explain the proposed scope before work begins. If you are planning an upgrade, ask about FTL Finance options, applicable equipment warranties, and what the installation includes. Availability and terms depend on the project and provider.
For recurring care, our Diamond Thermostat membership plans provide another way to discuss heating and cooling maintenance with the team.
What information helps when several HVAC units serve one San Rafael building?
Share the affected room or tenant space, the thermostat location, and any unit labels or prior service records. We can then discuss the equipment involved and the access needed for diagnosis.
How do I request heating or cooling service in San Rafael?
Call (707) 762-7260 or use our contact form with the address, equipment type, and symptoms. Our Petaluma team will discuss the scope and confirm scheduling. A request does not automatically reserve an appointment.
More ways we can help
Air quality and specialty equipment
Our service range also includes the air distribution and specialty systems in your home. Identify the equipment and the concern when you request a visit so we can confirm the right scope.
- Air purifier installation
- Filter maintenance and replacement
- Duct cleaning
- Duct sanitizing
- Dryer vent cleaning
- Wine cooler maintenance and repair
- Sauna repairs and replacements
Browse our heating, furnace, and air conditioning services, or view the complete service directory.
Looking beyond San Rafael? See Marin County coverage and all areas we serve. We also accept requests across the North Bay, Napa County, and San Francisco.
Repairs · New systems · MaintenanceNeed a repair?
Need a repair?
Planning a new system?
Tell us what’s happening with your heating or cooling. We’ll help you understand the next step and put together a clear estimate.