Connolly Heating and Air Conditioning

Connolly Heating and Air Conditioning We are heating and cooling professionals! We maintain a high level of quality among our staff. Proud to be family owned since 1971.

Service and installation of quality heating and air conditioning equipment, indoor air quality, duct design, duct replacement, solar electricity and Generac generators. All of our installers and technicians are trained on a regular, on-going basis. Bonded & Insured
Licensing Numbers: B 268327 | HVAC 658796

Performed maintenance on 6 year old Payne condensing unit. Everything is in good health!
06/05/2026

Performed maintenance on 6 year old Payne condensing unit. Everything is in good health!

Another home comfort upgrade completed! 🔧❄️☀️Our team installed a brand new Carrier 3-ton heat pump system along with a ...
06/05/2026

Another home comfort upgrade completed! 🔧❄️☀️

Our team installed a brand new Carrier 3-ton heat pump system along with a new air handler neatly installed in the closet for improved efficiency, reliability, and year-round comfort.

Clean installation, better airflow, and energy-efficient performance — ready for every season! 🙌

Thank you to our customer for trusting us with their HVAC installation needs.

📞 Contact us today to schedule your estimate!
925-217-0288

Performed service on 2 30 ton HVAC units
06/04/2026

Performed service on 2 30 ton HVAC units

AC maintenance was performed in Hercules by Connolly Heating and Air Conditioning. The technician conducted a thorough i...
06/03/2026

AC maintenance was performed in Hercules by Connolly Heating and Air Conditioning. The technician conducted a thorough inspection and tune-up of the air conditioning unit, ensuring optimal performance for the upcoming season. All components were checked, and necessary adjustments were made to enhance energy efficiency and reliability. This routine maintenance helps extend the lifespan of the system and improve the indoor air quality for the customer.

Another quality installation completed! 🔧❄️☀️Our team installed a brand new Carrier 4-ton 15 SEER AC system along with a...
06/02/2026

Another quality installation completed! 🔧❄️☀️

Our team installed a brand new Carrier 4-ton 15 SEER AC system along with a new cased coil to provide reliable cooling, improved efficiency, and dependable comfort for the home.

Ready just in time for the warmer weather ahead! 🙌 Thank you to our customer for trusting us with their HVAC upgrade.

Need a new AC system before summer hits? Contact us today for a free estimate!
925-217-0288

Comfort upgrade complete! 🔧❄️☀️Our team installed a brand new Mitsubishi ducted air handler paired with a new 3-ton heat...
05/31/2026

Comfort upgrade complete! 🔧❄️☀️

Our team installed a brand new Mitsubishi ducted air handler paired with a new 3-ton heat pump system to deliver efficient, reliable heating and cooling throughout the home.

This high-efficiency setup provides improved airflow, quieter performance, and year-round comfort for our customer. 🙌

Thank you for trusting us with your HVAC installation needs!

📞 Contact us today to schedule your estimate!
925-217-0288

Another custom comfort system installed! 🔧❄️☀️Our team completed the installation of a high-efficiency Mitsubishi variab...
05/29/2026

Another custom comfort system installed! 🔧❄️☀️

Our team completed the installation of a high-efficiency Mitsubishi variable speed mini split heat pump system featuring 36,000 BTUs, multiple fan coils, and Mitsubishi high wall/ceiling cassette units for precise comfort throughout the space.

Variable speed technology means quieter operation, improved energy efficiency, and consistent heating & cooling year-round. 🙌

Thank you to our customer for trusting us with this amazing upgrade!

Garage comfort upgrade complete! 🔧❄️☀️We installed a brand new mini split system to keep this garage comfortable year-ro...
05/27/2026

Garage comfort upgrade complete! 🔧❄️☀️

We installed a brand new mini split system to keep this garage comfortable year-round — perfect for working, working out, hobbies, or extra living space. Quiet, energy-efficient, and built for all-season comfort!

Thank you to our customer for trusting us with another quality installation. 🙌

Thinking about adding heating and cooling to your garage or workshop? Give us a call today!
925-217-0288

Next-level comfort installed 🔧❄️🔥We upgraded this home with a high-performance system featuring a Carrier 80% AFUE two-s...
05/26/2026

Next-level comfort installed 🔧❄️🔥

We upgraded this home with a high-performance system featuring a Carrier 80% AFUE two-stage gas furnace paired with a powerful Carrier 4 ton inverter-driven heat pump—delivering superior efficiency, precise temperature control, and reliable comfort year-round.

Smarter heating, stronger cooling, and built to last 💪

📞 Ready to upgrade your system? Contact us today for a free estimate!
925-217-0288

Another system upgrade done right 🔧❄️🔥We completed a full change-out with a new Carrier 95% AFUE single-stage gas furnac...
05/26/2026

Another system upgrade done right 🔧❄️🔥

We completed a full change-out with a new Carrier 95% AFUE single-stage gas furnace paired with a 3-ton condenser—bringing this home improved efficiency, reliable performance, and year-round comfort.

Out with the old, in with dependable comfort 💪

📞 Contact us today to schedule your free estimate!
925-217-0288

Address

428 N. Buchanan Circle #8
Pacheco, CA
94553

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

Telephone

+19252881408

Website

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