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Claim This BusinessCore Heating & Air Conditioning has served Petaluma and surrounding Sonoma County communities for years, earning a spotless 5.0 rating across 80 verified reviews. Owner-operator John leads the team, bringing a commitment to repair over replacement that reviewers repeatedly praise. The company handles both heating and cooling systems, responding to calls throughout Petaluma with transparent pricing and professional service.
What distinguishes Core Heating from competitors is John's insistence on fixing existing equipment rather than automatically recommending costly replacements. Multiple reviewers specifically note he declined to upsell them on new furnaces, instead explaining each problem and demonstrating repairs that saved hundreds or thousands of dollars. The company maintains low overhead to keep rates competitive while still delivering thorough work, including cleaning components that previous contractors overlooked.
Russel P. experienced this firsthand when his 36-year-old furnace required attention. John arrived the same day, replaced the blower motor, and thoroughly cleaned dirt-encrusted elements that had accumulated over decades. Russel reported his furnace now performs better than it has in the 26 years he has owned his home. Lisa Jepsen needed a new Trane system and found John professional, personable, and offering the best deal in town. Ben Leroi received free furnace inspection alongside his AC repair, with John providing maintenance advice to reduce future service calls.
All 80 reviewers award 5 stars, with John specifically named in multiple reviews as the technician delivering honest assessments, same-day arrivals, and fair pricing. Reviewers consistently note John repairs rather than replaces, and several mention he declined upselling opportunities.
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| ThursdayToday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
Diagnosing issues, replacing components like blower motors, and cleaning accumulated debris to restore performance.
Fixing cooling systems and installing new equipment including Trane systems with professional results.
Servicing heating systems with same-day availability and thorough repairs rather than automatic replacement recommendations.
Evaluating existing equipment and providing maintenance guidance, with some inspections offered at no charge.
Addressing heating emergencies with honest assessments and transparent explanations of each problem found.