HVAC Contractor in Petaluma, CA
A home that feels right starts with clear answers and careful work. Get upfront pricing and heating and cooling help from our Petaluma team, serving Novato, Rohnert Park, and the North Bay.
- HVAC repair
- Air conditioning repair
- Heating repair
- HVAC installation
Comfort starts with
the right service.
From a system that needs attention to a fresh start with new equipment, find the help you need.
HVAC Repair
Get to the source of heating and cooling problems.
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HVAC Installation
A new system planned around your space and comfort.
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HVAC Maintenance
Care that keeps your equipment working at its best.
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Air Conditioning Repair
Help with warm air, weak airflow, and cooling issues.
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Ductless Mini Split Installation
Heating and cooling, right where you need it.
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Heat Pump Installation
Efficient heating and cooling in one system.
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Need help choosing your next step?
Heating Contractor in Petaluma, CA
Cold rooms, uneven temperatures, or a system that won’t start? We help you understand the problem and your options for getting comfortable again.
From heating repairs to heat pump and ductless installations, we care for homes and businesses in Petaluma, Marin County, Napa County, San Francisco, and the entire North Bay.
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Furnace Repair Service in Petaluma, CA
When the furnace stops heating, makes unfamiliar sounds, or struggles to keep up, a clear diagnosis is the first step.
We troubleshoot gas and electric furnaces and explain your repair or replacement options. Our team serves Petaluma, Marin County, Napa County, San Francisco, and the entire North Bay.
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Air Conditioning Contractor in Petaluma, CA
Stay comfortable when the temperature climbs. We repair existing air conditioners and install cooling systems that suit your home, business, or new addition.
From central air to ductless mini splits, we help homes and businesses in Petaluma, Marin County, San Francisco, and the entire North Bay stay cool.
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Comfort you can count on.
Diamond HVAC Services Inc. is a Latino-owned business based on Petaluma Boulevard North. We help homeowners and businesses across the North Bay, with service available in English and Spanish.
Whether it’s a repair, routine maintenance, or a new installation, our approach is simple: understand what you need, explain the options, and take care with the work.
- Clear answersUnderstand your system and the next step.
- Upfront pricingKnow what to expect before work begins.
- Respect for your spaceCare for your home, business, and time.
Good service.
Happy neighbors.
Hear from the people who have trusted Diamond HVAC with their comfort.
Read more reviewsThe latest from Diamond.
Recent work, helpful updates, and offers from your local HVAC team.
Proudly serving
the North Bay.
Based in Petaluma, we serve Sonoma County, the entire North Bay, Marin County, Napa County, and San Francisco.
Nearby, but don’t see your town? Give us a call.
Explore our service areasQuestions?
We’re here to help.
Find answers to common heating and cooling questions, or talk with our team about your system.
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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.