Serving Petaluma & the North Bay

Plan your HVAC project

Specials & financing.

Current updates, project conversations, and financing information from your local Diamond HVAC team.

From the team

The latest from Diamond.

Our live updates include recent work, company news, and offers when available. Contact us to confirm the current details and whether an offer applies to your project.

Plan your project

Free estimates.

Tell us about the installation or service you are considering. We will discuss the scope and next step without assuming you already know which equipment you need.

Request an estimate
Financing available

Ask about FTL Finance.

Diamond HVAC partners with FTL Finance. Contact our team for the available financing options, application process, eligibility, and current terms for your project.

Start with the equipment and installation scope, then compare payment options. Ask about the application process and any applicable lender terms; financing approval and terms come from the lender. Our general service form does not collect financial application information.

Discuss your options
Ongoing system care

Diamond Thermostat memberships

Compare Silver and Gold membership options for annual heating and air conditioning tune-ups, system monitoring, and member benefits.

Compare membership plans
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.