HVAC Installation in Walnut Creek
Full-System Installation & Replacement, Backed by 50+ Years of Experience
When your HVAC system needs to be replaced, the decisions don’t stop at one piece of equipment. Connolly Heating & Air Conditioning handles the full scope: furnaces, heat pumps, air conditioners, ductless mini-splits, air handlers, and ductwork. Since 1971, our family-owned company has served Walnut Creek and Contra Costa County with hands-on experience across every system type. We’re a Carrier® Factory Authorized Dealer, a BPI®-certified company, and our technicians hold NATE certification, the industry’s leading credential for HVAC competency. We service all makes and models, so whatever system is in your home or building, we can assess it, replace it, and help get it running right.
Ready to move forward? Call us at (925) 281-3462 to schedule your free HVAC installation estimate in Walnut Creek.
Why Walnut Creek Homeowners Choose Connolly Heating & Air Conditioning
A new HVAC system is a significant investment. We’ve built our reputation around making that process as straightforward as possible, starting with a free estimate so you know what to expect before any work begins.
What we bring to every installation:
- Free estimates on all installation and replacement projects
- Flexible financing options to fit a range of budgets
- Installation warranty for long-lasting performance and peace of mind
- Satisfaction guarantee backing every job we complete
- Carrier® Factory Authorized Dealer status, meeting Carrier’s standards for technical training, business practices, and customer service
Our five-star reviewers consistently describe our technicians as helpful, knowledgeable, professional, prompt, and courteous. That reputation shapes how we approach every installation.
HVAC Equipment We Install & Replace
Rather than sending you to separate pages for each system type, here’s the full picture of what our HVAC installation company in Walnut Creek can handle.
Furnaces
We install and replace gas and electric furnaces, with the new unit properly sized and connected for reliable heating performance.
Heat Pumps
Heat pump installation provides year-round comfort by handling both heating and cooling from a single system, a practical fit for Walnut Creek’s mild winters.
Air Conditioners
We install cooling systems, including Carrier equipment, and installed AC units meet or exceed California Energy Commission efficiency standards.
Ductless Mini-Split Systems
For spaces without existing ductwork, a ductless mini-split delivers zone-controlled heating and cooling in a compact, energy-efficient package.
Air Handlers
We install air handlers that distribute conditioned air evenly throughout your home or business, supporting consistent comfort in every room.
Ductwork Replacement
Deteriorated or improperly sized ducts undermine even the best equipment. We replace air ducts to improve airflow, system efficiency, and indoor air quality.
As a BPI®-certified company, we’re also qualified to assess how your property uses energy and can offer recommendations alongside your installation to improve overall efficiency.
Neighborhoods We Serve for Heat Pump Service in Concord
Downtown Concord and Todos Santos Plaza: The older homes around Todos Santos Plaza
and downtown Concord often run aging HVAC systems that struggle through inland summer
heat. Many of these houses are prime candidates to convert an old furnace and AC
combo into a single efficient heat pump. We help downtown Concord homeowners upgrade
without disrupting the character of their home.
Ygnacio Valley: Established Ygnacio Valley neighborhoods sit in some of the hottest
inland pockets of Concord, where a heat pump earns its keep every summer. Homes here
frequently need replacement units once their original systems pass the fifteen-year
mark. We size and install high-efficiency heat pumps built for this area's demanding
cooling load.
Clayton Valley and Dana Estates: Larger homes in the Clayton Valley and Dana Estates
areas often deal with rooms that never cool evenly on a single-zone system. A properly
sized heat pump with the right airflow design fixes those hot and cold spots. We
assess each home individually and recommend zoning where it makes sense.
Willow Pass and Sun Terrace: The mid-century homes near Willow Pass Road and Sun
Terrace were built for a different era of heating and cooling, and many still run
original ductwork and aging equipment. These are the homes where switching to an
efficient heat pump makes the biggest difference in comfort and monthly bills. We
handle the full conversion, from load calculation to final startup.
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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.
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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.
Pacheco Trusted Family-Owned Heat Pump Company Since 1992
Connolly Heating and Air Conditioning has served Concord and the surrounding East Bay for more than three decades. We are family-owned, and the same values that built our reputation still run the business: honest diagnostics, straight pricing, and work we stand behind. Concord homeowners who were burned by a previous contractor come to us because we tell them the truth about what their system needs, even when that means a smaller repair instead of a bigger sale.
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Licensed & Insured HVAC Contractor
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Family-Owned Since 1992
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Free Estimates Available
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Financing Options Available
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We Service All Makes and Brands