Your CaliforniaAir Care Specialists
HEATING
Is your Furnace acting up, blowing cold air, or making too much noise? Don’t get left in the cold! Our experienced team of professionals is here to keep your home or business warm and cozy.
COOLING
Connolly Heating and Air Conditioning is the leading company for all of your air conditioning and cooling needs. Our technicians are qualified professionals who will get the job done right for your home or business.
MAINTENANCE
Regular HVAC maintenance not only increases the reliability and efficiency of your equipment, it also extends its lifetime. Protect your investment with a maintenance agreement.
INDOOR AIR QUALITY
Did you know, indoor air can be two to five times more polluted than outside air? Breathe easy, knowing you have a trusted partner in Connolly Heating and Air Conditioning.
SOLAR
Designed to help you lower your home’s overall energy consumption as well as its effect on the environment, solar energy systems utilize the energy of the sun and convert it to lower electricity usage for you.
Industry-Leading HVAC Experts
ESTABLISHED IN 1992, Connolly Heating and Air Conditioning is an air care specialist that serves communities in Contra Costa County with superior heating and air conditioning services and products. Our team’s goal is to provide outstanding professionalism, premier solutions, and long-lasting results for residential and commercial customers. At Connolly Heating and Air Conditioning, we strive for 100 percent satisfaction in everything we do. Choose Connolly as your trusted HVAC provider!
Leading our industry in air care comfort
We Have Financing Options Available!
Special Offers
Proudly Serving These California Communities
Walnut Creek, CA • Concord, CA • Martinez, CA
We Service All Makes and Brands!
We’re a Carrier Factory Authorized Dealer
Carrier Authorized Dealers work hard for this designation. And all their experience and work is for one purpose—to create comfortable homes and satisfied customers. So when you need a new system, or it’s time to service or repair your current equipment, you can trust you’re working with the best in the business.
The Connolly Blog
Why Is a Home Dehumidifier Important?
Although most Walnut Creek homeowners understand the importance of having a working heating, ventilation, and air conditioning (HVAC) system to provide heating and cooling throughout the year, some people don’t realize the equally important factor of controlling a home’s humidity levels as well.
Why Ductless Is the Way to Go
You deserve the most comfort at the best price in your California home or business. You want reliable heating, ventilation, and air conditioning (HVAC) at reasonable prices. You want fresh, clean air so you and your loved ones can enjoy a healthy home.
How to Properly Size an AC System
In the heat of the summer, it’s easy to assume that bigger is better when it comes to air conditioning (AC) systems. Obviously, if you have an air conditioner that’s too small in your Concord home, you will not be able to keep your temperatures consistently low even if the unit is running constantly.
Awards and Certifications
Our Maintenance Plans
Peace of mind with year-round protection!