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About Us

Call (925) 281-3462 Today to Meet Our Experienced HVAC Team

In 1971, our Connolly HVAC company opened its doors to provide heating and cooling services throughout Contra Costa County.

Dedicated to providing industry-leading HVAC services, our team designs and installs HVAC systems, cleans air ducts, and provides other services that improve indoor air quality for residential and commercial clients. Our company is also qualified to assess how customers are using energy and offers various energy-saving solutions.

Owner Norman Grimes is proud of his family business, and understands that his highly skilled personnel have been an important aspect of the company’s success. Connolly’s handpicked team of installers, service technicians, and office staffers contribute to each client’s journey. Our employees understand the importance of HVAC system design and execution, as well as the high quality that is necessary to carry out each job.

Connolly Heating and Air Conditioning prioritizes quality control throughout each step of service, which Grimes believes is important for ensuring the best possible results. Since the inception of the business, Connolly has focused on taking care of customers and promptly addressing their concerns. When working with our team, your expectations will be exceeded!

Proudly Serving All of Contra Costa County
  • Customer Satisfaction Guaranteed
  • Industry Experts Established in 1971
  • Ask Us For A FREE Estimate
  • Financing Options Available
  • We Service All Makes and Brands

Why Choose Connolly Heating and Air Conditioning?

If you are looking for reliability and integrity, choose Connolly Heating and Air Conditioning as your trusted HVAC provider. For 5 years, we have provided our customers with outstanding service and have taken extra steps to improve our clients’ indoor comfort.

As a local HVAC company, we deliver our promises of ultimate customer satisfaction, highest industry quality, and helpful expertise. From the moment our NATE-certified technicians step into your home for detailed measurements, to the time that we leave after installing and testing your new equipment, Connolly Heating and Air Conditioning provides reliable and honest services that meet your specific needs.

Contact Us for Heating and Cooling Services in Contra Costa County Today

If you’re looking for high quality and helpful expertise, Connolly Heating and Air Conditioning is the HVAC company to choose! Call our team at (925) 281-3462 to schedule an appointment or submit an online request to get started immediately. Our Connolly Heating and Air Conditioning company looks forward to serving you!

We're Not Comfortable Until You Are

We provide quality HVAC services along with regular discounts and maintenance plans. Call Connolly Heating & Air Conditioning today for comfort you can count on.

  • Special Offers Priceless HVAC service that you can afford!
    Beat the heat or stay cozy warm without breaking the bank. Check out our coupons and make every breath at home a refreshing and budget-friendly experience.
  • The Connolly Blog Hear from industry experts with decades of experience!
    View our blog to learn about our tricks of the trade! We've gathered the best tips to share with you to help you keep your home comfortable, no matter the season.
  • Maintenance Plans Peace of mind with year-round protection!

    Keep your HVAC system protected with one of our maintenance plans! You'll score some exclusive savings and have the comfort of knowing that your HVAC systems are running smoothly.

Carrier Factory Authorized Dealer

Carrier Factory Authorized Dealers are the home heating and cooling experts to turn to. They are your single resource for everything you need — from tailoring your ideal comfort system to installation, service and beyond.

Look for the Carrier Factory Authorized Dealer seal of approval — it means your dealer has met our rigid criteria for quality. In fact, Carrier offers you a 100% satisfaction guarantee when you purchase your Carrier equipment from a Factory Authorized Dealer. It’s your sure sign of an air conditioning and heating system dealer that will provide you with superior products, intelligent insight and the ultimate service.

Becoming a Carrier Factory Authorized Dealer is no easy feat. Only those expert heating and air conditioning dealers who meet our highest standards and closest scrutiny — not only for their technical expertise, but also for their business practices and customer service quality — earn the Carrier Factory Authorized Dealers distinction.

North American Technician Excellence (NATE)

North American Technician Excellence (NATE) is an independent, third-party organization that develops and promotes excellence in the installation and service of heating, ventilation, air conditioning, and refrigeration equipment by recognizing high-quality industry technicians through voluntary testing and certification. Our technicians have passed the rigorous testing necessary to qualify as NATE Certified Technicians.


BPI is a national standards development organization for residential energy efficiency and weatherization retrofit work. As an independent, not-for-profit organization, we bring together leading building science experts from across North America to develop our standards using a consensus-based methodology.

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