Heating & Air Conditioning in the Oakland Area

Air Conditioning & Heat Pump

Get quality heat pump, mini split, AC installation, repair & maintenance in Oakland, Berkeley & surrounding areas.

Heating Repair & Installation

We provide a wide range of central heating services including furnace repair, maintenance, replacement and new installation!

Indoor Air Quality

We carry a variety of IAQ products that will dramatically improve your indoor air quality including PlasmaAir.

Light Commercial

Our comprehensive range of light commercial HVAC services covers new construction design to replacement systems.

HVAC Services in Oakland & the East Bay

When customers call us, something has usually gone wrong—or they’re planning an upgrade or routine maintenance. Wouldn’t it be nice if a real person answered the phone, listened to the issue, and sent a knowledgeable technician who arrives on time and gets the job done right?

Call the trusted HVAC contractors in Oakland, CA for complete heating and air conditioning services, including air conditioning service, mini splits, heat pumps, and heating repair in Oakland. We proudly provide reliable residential and commercial HVAC services throughout the East Bay.

Complete HVAC Services for Homes & Businesses

Harry Clark Heating and Air Conditioning provides expert repair, maintenance, replacement, and installation services for residential and light commercial properties throughout Oakland and the East Bay. Whether your system is not cooling, your heater is unreliable, or you are planning an upgrade, we deliver honest recommendations and quality workmanship.

We service all major brands and work on air conditioners, furnaces, heat pumps, mini splits, rooftop units, and more. From fast repairs to high-efficiency system replacements, our team is ready to restore comfort and improve performance.

Welcome to Harry Clark Heating and Air Conditioning Inc.

Stay Cool This Summer with Professional AC Installation in Oakland, CA

Energy-efficient air conditioning, heat pumps, and ductless mini splits designed for Bay Area homes.

Air Conditioning Installation

Upgrade your home with a high-efficiency air conditioning system that keeps you cool and lowers energy costs.

Heat Pump Installation

Enjoy year-round comfort with a modern heat pump system that heats and cool your home efficiently.

Ductless Mini Split Installation

Perfect for zoned cooling, mini splits provide efficient comfort without the need for ductwork.

Proudly serving Oakland, Berkeley, Alameda, Piedmont, San Leandro, and surrounding Bay Area cities.

Save up to $2,600

in annual tax credits with higher-efficiency YORK® equipment!

Heat pump, Air Conditioner, Package & Furnace

HVAC Tips

Breathe Easier with York IAQ Products in Oakland, CA

Breathe Easier with York IAQ Products in Oakland, CA Improving indoor air quality starts at home with the right solutions from Harry Clark Heating &

- Read More -

Heat Pump Installation in Oakland & Berkeley

Heat Pump Installation in Oakland & Berkeley Upgrade your home’s heating and cooling system with the versatile and efficient heat pump installation from Harry Clark

- Read More -

Beat the Heat: The Ultimate Guide to Air Conditioning Maintenance in Oakland, CA

Beat the Heat: The Ultimate Guide to Air Conditioning Maintenance in Oakland, CA As temperatures rise in Oakland, CA, your air conditioner becomes your best

- Read More -

Upgrade Your Indoor Air Quality with YORK®

Upgrade Your Indoor Air Quality with YORK® Your HVAC system is more than just temperature control; it’s your ally in improving indoor air quality (IAQ).

- Read More -

Ingrid B

Highly recommend. Knowledgeable technicians, reasonable rates, reliable work. Friendly people.

Anthony F

Had Harry Clark add AC to our property (heat pump install integrated with a newer gas furnace) - they were super easy to work with and got through a relatively challenging install in good time. Felt like their pricing was reasonable as well, also like that they're a local East Bay company. They were very honest and open about options on how to add AC whereas others were pushing for a full replacement with heat pump. Will definitely be using them for any future work as well.

Jeff a

We took advantage of the free design services for a heat pump heating system offered by QuitCarbon. After completing their home assessment questionnaire they gave us sizing, pricing and rebate information. QC referred us to Harry Clark Heating and Air Conditioning for a complete upgrade to replace our gas furnace. HC owner Don Marshall spent an hour and a half assessing the existing heating system in our 1908 home, answering all our questions and providing a detailed quote for a two zone system the next day. After reviewing the quote with QuitCarbon, we decided the price was competitive and chose not to get other bids. I should mention that I’m a licensed mechanical engineer and have lots of experience working with contractors. Armando Hernandez and his crew completed the install in one week and we were up and running on day 5. The quality of the workmanship was excellent. Armando addressed my many questions and was a pleasure to work with. There was an issue with a defective part in the air handler. The project manager Matt Schwoyer was able to resolve it with their supplier, and the part was replaced the following week. Everyone at Harry Clark was professional and responsive throughout the whole project. We are pleasantly surprised with the improved and consistent comfort level in our home and would recommend HC to anyone considering a heat pump retrofit.

Thierry A

Always excellent work

Pathy L

Harry Clark did an excellent job of replacing my aging gas furnace with a hybrid heat pump. They also provided me with zoning which I didn't have before. Everything is working great and they did a good job.

Fred W

certain things like paying taxes, root canals and colonoscopies come with being a grown up. every adult has had to replace a furnace or air conditioning system. last week my heat wouldn’t come on and a repairman came out to fix it. he told me the unit needs to be replaced to the tune of $6,500. being a trusting individual, as i lowered my trousers so they could shove the hoses up my butt, i called Harry Clark for a second opinion. Harry agreed the furnace is old and will eventually need to be replaced but the reason it wasn’t working is the thermostat. he changed the filter and replaced the thermostat. thanks to Harry Clark, i feel like a kid again.

Tamara V

Super knowledgeable and on time! I will be calling them again!