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Claim This BusinessDerek Sawyer's Heating, Furnace & Air Conditioning repair has served Modesto area homeowners for over two decades, building a reputation on reliable installations and responsive service calls. The company holds California state licensing and maintains an A+ rating with the Better Business Bureau, with 1,770 verified customer reviews averaging 4.8 stars. Operating from their Modesto headquarters, the team handles residential heating and cooling needs across Stanislaus County, including nearby communities such as Turlock and Salida. Their fleet of service vehicles responds to calls Monday through Saturday, with Sunday availability for emergency appointments.
What distinguishes Derek Sawyer's from neighboring contractors is their commitment to transparent pricing and customer education. During service calls, technicians take time to explain system operations, maintenance requirements, and repair options, practices that multiple reviewers specifically commend. The company offers financing programs for new equipment purchases, allowing homeowners to manage replacement costs without upfront payment. Their installation teams maintain clean work areas and protect homeowner property during central heat and AC installations.
Customer reviews repeatedly name individual technicians who deliver exceptional service. Mario frequently receives praise for taking time to educate homeowners on system components and maintenance practices. Isaac and Francisco handled a recent central heat and AC installation, with the customer noting their professionalism and careful work habits. Roy serviced a heater unit and earned commendation for his expertise and communication skills. These named technician experiences illustrate the company's emphasis on trained, customer-focused service professionals.
Of 1,770 reviews, customers frequently mention technician knowledge and thorough explanations, with Mario, Isaac, Francisco, and Roy named across multiple five-star ratings. One negative review from 2025 cites a tankless water heater installation issue and communication lapses, while positive reviews consistently highlight professional conduct, clean installations, and financing assistance.
| Sunday | 8 AM–4 PM |
| Monday | 7 AM–7 PM |
| Tuesday | 7 AM–7 PM |
| Wednesday | 7 AM–7 PM |
| ThursdayToday | 7 AM–7 PM |
| Friday | 7 AM–6 PM |
| Saturday | 8 AM–5 PM |
Diagnose and repair cooling system issues, perform annual tune-ups to maintain efficiency and extend equipment life.
Heating system repairs, emergency heater service, and preventive maintenance to ensure reliable winter performance.
Professional installation of new air conditioning systems with proper sizing, setup, and post-installation testing.
Complete heating system installation including furnace replacement with financing options available.
Comprehensive system evaluations to identify issues, explain problems, and recommend repair or replacement options.