Serving Petaluma & the North Bay

Windsor · Sonoma County

HVAC Contractor in Windsor, CA

Heating, cooling, and a clear next step for your home or business. Serving Windsor from our Petaluma base.

Compact outdoor HVAC unit installed beside a stone wall
Serving Windsor

HVAC service in Windsor

We provide HVAC service throughout Windsor, including homes near Foothill Regional Park and properties around the Town Green, Windsor River Road, and Old Redwood Highway. Call us for help with an existing system or to discuss new heating and cooling equipment.

An outdoor-unit replacement, a ductless installation, and a recurring heating fault are different projects. We discuss your current equipment, the rooms it serves, and what you want to improve. That keeps the estimate tied to a specific comfort goal rather than an equipment list alone.

How we can help

HVAC services in Windsor

Explore repair, installation, and maintenance options for your Windsor property. You can also contact us directly if you are not sure which service to request.

Repair & diagnosis

When heating or cooling changes unexpectedly, start with an evaluation of the symptoms, equipment, and controls.

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Installation & replacement

Compare system options with attention to the rooms, existing distribution, placement, and project goals.

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Maintenance & tune-ups

Plan care around the actual equipment and its instructions, with repairs explained separately when needed.

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Plan for the existing layout and the next upgrade

For a Windsor home near Foothill Regional Park, explain which rooms need attention and how the current system reaches them. Outdoor placement should leave room for service and fit with the way you use the side yard or patio. A replacement proposal should identify the equipment and any supporting changes together.

A business around the Town Green or Windsor River Road may need different settings across customer and staff spaces. Share operating hours and the contact who can authorize work. We can discuss repair, scheduled care, or a multi-zone design without assuming that every room needs its own new system.

Discuss your Windsor service request
Planning your visit

Think through equipment placement early

For a new system, tell us about narrow side yards, deck access, and the rooms closest to possible outdoor-unit locations. We can discuss routing and future maintenance access before installation. If you belong to an association or need property-owner approval, bring those requirements into the planning conversation.

Our coverage also includes the broader North Bay, Marin County, Napa County, and San Francisco. If your property is outside Windsor, call with the address to discuss service.

Can you help compare a heat pump with my existing system?

Yes. We can review the installed equipment, distribution, controls, and project goals. The comparison should explain supporting work and suitability for the property, not just the name or efficiency rating of a new unit.

Can an existing Windsor system be adapted for an addition?

Sometimes. We review system capacity, the available distribution route, and how the addition will be used. Extending central equipment and adding a separate ductless zone are options to compare rather than assumptions to make from floor area alone.

Compact outdoor unit beside a wooden deck
Equipment location considered alongside the usable outdoor space.
Wall-mounted outdoor unit with lines routed down an exterior wall
Wall mounting and line routing suited to the available exterior space.

Explore Diamond HVAC’s project photos

Explore all service areas
Repairs · New systems · Maintenance

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.

Get a Free Estimate (707) 762-7260 Based in Petaluma. Serving the North Bay.