Harry Clark Heating and Air Conditioning
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About Harry Clark Heating and Air Conditioning
Harry Clark Heating and Air Conditioning serves residential and light commercial clients throughout Oakland and the East Bay with a 4.7-star rating drawn from 18 customer reviews. The company handles air conditioning, heating, heat pumps, mini splits, and indoor air quality systems, operating Monday through Friday from 7:30 AM to 4:30 PM. Their team provides installation, repair, and maintenance services for all major HVAC brands.
This contractor distinguishes itself through specialized offerings including PlasmaAir indoor air quality products, ductless mini split systems, and heat pump retrofits for older homes. They also serve light commercial properties with design-build capabilities for new construction and system replacements. Their service menu includes server room air conditioning and green building consultation.
Multiple reviewers highlight the team's approach to complex installations. Jeff Adams, a licensed mechanical engineer, described a heat pump retrofit on his 1908 home where technician Armando Hernandez completed the install in one week. Another reviewer, Anthony Fernando, noted the company's honesty about options when adding AC to a property with an existing gas furnace. A reviewer named Pathy Lakshmipathy mentioned receiving zoning control with their heat pump replacement.
What Customers Say
Three of four named reviewers specifically praised individual technicians, with Armando Hernandez receiving commendation for installation quality and Don Marshall noted for detailed assessments. Positive reviews consistently cite responsiveness and clear communication about options, with no negative feedback present in available reviews.
Working Hours
| Sunday | Closed |
| MondayToday | 7:30 AM–4:30 PM |
| Tuesday | 7:30 AM–4:30 PM |
| Wednesday | 7:30 AM–4:30 PM |
| Thursday | 7:30 AM–4:30 PM |
| Friday | 7:30 AM–4:30 PM |
| Saturday | Closed |
Services
Air Conditioning Installation, Repair & Maintenance
Full-service AC coverage including new installs, repairs, and routine maintenance for all major brands.
Heat Pump Installation & Repair
Heat pump systems including ductless mini splits and hybrid setups that integrate with existing gas furnaces.
Furnace Installation, Repair & Maintenance
Central heating services covering furnace replacement, new installation, repairs, and annual maintenance.
Ductless Mini Split Systems
Zone-specific heating and cooling without ductwork, ideal for older homes or room additions.
Indoor Air Quality Solutions
PlasmaAir products and other IAQ systems designed to reduce airborne contaminants.
Thermostats & Zoning
Smart thermostat installation and multi-zone control systems for personalized comfort.
Light Commercial HVAC
Design-build and replacement services for commercial properties including rooftop units.