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Find Central a/c installers in Knightsen

Avatar for HVAC Alliance Expert, Inc.

HVAC Alliance Expert, Inc.

23638 Lyons Avenue, Suite 148
3.50(
6
)
Approved Pro

HVAC Alliance Expert, Inc.

23638 Lyons Avenue, Suite 148
3.50(
6
)
Approved Pro
9 years of experience
Free onsite estimate

We are dedicated to providing our clients with the very best in service, installation, and repair for all phases of your HVAC needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We are known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee your satisfaction.

"HVAC Alliance Expert is a fantastic service provider! When I was stuck in the bitter cold with my furnace out of order, they came to help. Not only did their licensed technician promptly resolve the problem and repair my furnace, but he even went beyond that by generously explaining what happened and offering valuable advice on maintaining it. His demeanor was friendly yet professional throughout the service; you won't regret calling them for HVAC services! Highly recommend this company - don't look any further."

Charis D on March 2023

We are dedicated to providing our clients with the very best in service, installation, and repair for all phases of your HVAC needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We are known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee your satisfaction.

"HVAC Alliance Expert is a fantastic service provider! When I was stuck in the bitter cold with my furnace out of order, they came to help. Not only did their licensed technician promptly resolve the problem and repair my furnace, but he even went beyond that by generously explaining what happened and offering valuable advice on maintaining it. His demeanor was friendly yet professional throughout the service; you won't regret calling them for HVAC services! Highly recommend this company - don't look any further."

Charis D on March 2023


Avatar for Oakley Heating and Air

Oakley Heating and Air

400 Norcross Ln
5.00(
8
)
Approved Pro

Oakley Heating and Air

400 Norcross Ln
5.00(
8
)
Approved Pro
1 years of experience
Free onsite estimate

Oakley Heating and Air, LLC provides exceptional service to the surrounding areas. Always taking pride in all of our services, striving to execute with excellence, and putting our customers in the forefront, is our philosophy. Whatever your Heating and Air needs may be, you can count on our company to leave you satisfied and happy. Call today , you'll be pleased you did. Thank you

"Oakley heating and Air has been our go to for some time now. Terry is awesome and reliable. Hard to find now a days. Haven’t had an issue that he can’t solve. I Will continue to support and recommend him to all my friends. "

Ricardo c on July 2025

Oakley Heating and Air, LLC provides exceptional service to the surrounding areas. Always taking pride in all of our services, striving to execute with excellence, and putting our customers in the forefront, is our philosophy. Whatever your Heating and Air needs may be, you can count on our company to leave you satisfied and happy. Call today , you'll be pleased you did. Thank you

"Oakley heating and Air has been our go to for some time now. Terry is awesome and reliable. Hard to find now a days. Haven’t had an issue that he can’t solve. I Will continue to support and recommend him to all my friends. "

Ricardo c on July 2025


Avatar for Perfect Star Heating and Air Conditioning

Perfect Star Heating and Air Conditioning

4415 Cowell Road
4.91(
247
)
Approved Pro

Perfect Star Heating and Air Conditioning

4415 Cowell Road
4.91(
247
)
Approved Pro
Super Service Award
Customers say: Quick response
950 local quotes requested
9 years of experience

With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.

"Gio was an excellent service tech. He was knowledgeable, personable, and courteous. He solved all the issues with my A/C efficiently and cheerfully. We have used Perfect Star before and Gio reflected their excellence"

Olivia B on September 2025

With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.

"Gio was an excellent service tech. He was knowledgeable, personable, and courteous. He solved all the issues with my A/C efficiently and cheerfully. We have used Perfect Star before and Gio reflected their excellence"

Olivia B on September 2025


Avatar for Tyndall HVAC, Inc.

Tyndall HVAC, Inc.

2825 Mayflower Drive
4.62(
91
)
Approved Pro

Tyndall HVAC, Inc.

2825 Mayflower Drive
4.62(
91
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
22 years of experience

Tyndall HVAC is founded on principles of quality and integrity, boasting an impressive legacy that spans over 25 years. At the heart of our operations lies a steadfast commitment to excellence, a guiding principle that influences every aspect of our service, from the initial consultation to the finalization of each project. Our primary goal is to enhance homeowners' and business proprietors' living and working environments, ensuring their comfort and satisfaction. We pride ourselves on our transparent and fair pricing model, which features a flat-rate system to eliminate the possibility of unforeseen expenses. At Tyndall HVAC, we offer complimentary, no-obligation proposals for new installations, affirming our position as a trusted and reliable partner in HVAC solutions.

"My AC stopped working last November, and since then i had 4 contractors i called to fix it, i was turned down by everyone. i called Tyndall and peter came out and talked about it with me, actually troubleshot it, and 2 days later had parts and fixed it. i would give them 6 stars if i could. im so glad to have my ac running again. my recommendation, if you want something done, call Tyndall, because the rest of the contractors seem to just say its not fixable and leave without even looking at it. these guys were the first people that listened, then looked at the unit before declining service, and then actually fixed it. 10/10 great job and thank you."

Saabi A on June 2025

Tyndall HVAC is founded on principles of quality and integrity, boasting an impressive legacy that spans over 25 years. At the heart of our operations lies a steadfast commitment to excellence, a guiding principle that influences every aspect of our service, from the initial consultation to the finalization of each project. Our primary goal is to enhance homeowners' and business proprietors' living and working environments, ensuring their comfort and satisfaction. We pride ourselves on our transparent and fair pricing model, which features a flat-rate system to eliminate the possibility of unforeseen expenses. At Tyndall HVAC, we offer complimentary, no-obligation proposals for new installations, affirming our position as a trusted and reliable partner in HVAC solutions.

"My AC stopped working last November, and since then i had 4 contractors i called to fix it, i was turned down by everyone. i called Tyndall and peter came out and talked about it with me, actually troubleshot it, and 2 days later had parts and fixed it. i would give them 6 stars if i could. im so glad to have my ac running again. my recommendation, if you want something done, call Tyndall, because the rest of the contractors seem to just say its not fixable and leave without even looking at it. these guys were the first people that listened, then looked at the unit before declining service, and then actually fixed it. 10/10 great job and thank you."

Saabi A on June 2025


Avatar for Jim's Heating and Air Conditioning

Jim's Heating and Air Conditioning

3781 Daniel Drive
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Jim's Heating and Air Conditioning

3781 Daniel Drive
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
53 local quotes requested
5 years of experience

At Jim's Heating and Air Conditioning, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

At Jim's Heating and Air Conditioning, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.


AireServ of Campbell and Saratoga

1185 Campbell Ave Suite 27
5.00(
5
)
Approved Pro

AireServ of Campbell and Saratoga

1185 Campbell Ave Suite 27
5.00(
5
)
Approved Pro
28 years of experience
Free onsite estimate

Look no further than Aire Serv® when you need high-quality Santa Clara County, CA, heating and air conditioning services. We have been providing top-tier HVAC services throughout North America since 1992. At Aire Serv of Campbell & Saratoga, our HVAC experts pride themselves on consistently delivering outstanding service to all our commercial and residential customers.

Look no further than Aire Serv® when you need high-quality Santa Clara County, CA, heating and air conditioning services. We have been providing top-tier HVAC services throughout North America since 1992. At Aire Serv of Campbell & Saratoga, our HVAC experts pride themselves on consistently delivering outstanding service to all our commercial and residential customers.


ACP Mechanical

457 Cedar River Wy
5.00(
9
)

ACP Mechanical

457 Cedar River Wy
5.00(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We take credit cards. Located in Sacramento, CA, we specialize in Heating, Ventilation and Air Conditioning (HVAC) installation, repair and maintenance. We work with you to make sure you have the most efficient and comfortable system for your home. A proper system can not only help improve air comfort and quality, but it can also help save you money on your energy bills. We are your one stop source that delivers quality work with a service oriented attitude. We service the greater Sacramento Area and neighboring cities. Emergency services available Call 916-704-8556. Ask about our Financing Options!

"Work was done promptly and efficiently."

James C on November 2019

We take credit cards. Located in Sacramento, CA, we specialize in Heating, Ventilation and Air Conditioning (HVAC) installation, repair and maintenance. We work with you to make sure you have the most efficient and comfortable system for your home. A proper system can not only help improve air comfort and quality, but it can also help save you money on your energy bills. We are your one stop source that delivers quality work with a service oriented attitude. We service the greater Sacramento Area and neighboring cities. Emergency services available Call 916-704-8556. Ask about our Financing Options!

"Work was done promptly and efficiently."

James C on November 2019


Avatar for Service Champions Heating & Air Conditioning

Service Champions Heating & Air Conditioning

4430 Yankee Hill Rd
4.64(
655
)
Approved Pro

Service Champions Heating & Air Conditioning

4430 Yankee Hill Rd
4.64(
655
)
Approved Pro
Customers say: Super punctual
5566 local quotes requested
22 years of experience

Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.

"Our Service Tech, Alex Peck, arrived on time to perform the annual check up & tune-up of our HVAC System. He was very professional and following the Tune-Up asked if there was any other items that needed done or looked into that he could take care of. His services were very much appreciated and very professional. Lee"

Lain L on September 2025

Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.

"Our Service Tech, Alex Peck, arrived on time to perform the annual check up & tune-up of our HVAC System. He was very professional and following the Tune-Up asked if there was any other items that needed done or looked into that he could take care of. His services were very much appreciated and very professional. Lee"

Lain L on September 2025


Jim's Air Systems

4.38(
8
)
Approved Pro

Jim's Air Systems

4.38(
8
)
Approved Pro
399 local quotes requested
47 years of experience

We are a family owned and operated Heating and Air conditioning and solar contractor in the Bay Area for the past 40 years. We specialize in Residential, Commercial, and New Construction installation. We pride ourselves in quality workmanship and fast reliable service at a fair price. We will not price gouge you like the big companies do. Call us for a free estimate, ask for Josh. 925-584-2634

"Josh got on this very quick and quoted the best price with good brand day and night carry"

jianyu d on November 2024

We are a family owned and operated Heating and Air conditioning and solar contractor in the Bay Area for the past 40 years. We specialize in Residential, Commercial, and New Construction installation. We pride ourselves in quality workmanship and fast reliable service at a fair price. We will not price gouge you like the big companies do. Call us for a free estimate, ask for Josh. 925-584-2634

"Josh got on this very quick and quoted the best price with good brand day and night carry"

jianyu d on November 2024


Avatar for Smart Heating and Air Conditioning, Inc.

Smart Heating and Air Conditioning, Inc.

1717 Solano Way
5.00(
11
)
Approved Pro

Smart Heating and Air Conditioning, Inc.

1717 Solano Way
5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
644 local quotes requested

Smart Heating and Air Conditioning has what you need when it comes to AC Repair and Furnace Repair, with over 20+ years of experience. From small to large A/C Repair or Furnace Repair to routine maintenance, Smart Heating and Air Conditioning specializes in repair, service and maintenance of your home's Central Heating & Cooling, Ductwork, or Indoor Air Quality / Filtration. Not to mention Smart HVAC excellent equipment replacement and installations. Cities we service throughout Contra Costa and Alameda County include: Alameda, Alamo, Antioch, Berkeley, Brentwood, Clayton, Clyde, Concord, Danville, Diablo, Discovery Bay, Dublin, El Cerrito, Hayward, Hercules, Kensington, Lafayette, Livermore, Martinez, Montclair, Moraga, Oakland, Oakley, Orinda, Piedmont, Pittsburg, Pleasant Hill, Pleasanton, Rossmoor, San Ramon, San Leandro and Walnut Creek, CA. Call today for your free estimate on equipment.

"Came out and looked over the furnace to make sure it's all ok. Looked at a lot of inner parts, cleaned some of them with fine tools. Worth it!"

MATT W on December 2024

Smart Heating and Air Conditioning has what you need when it comes to AC Repair and Furnace Repair, with over 20+ years of experience. From small to large A/C Repair or Furnace Repair to routine maintenance, Smart Heating and Air Conditioning specializes in repair, service and maintenance of your home's Central Heating & Cooling, Ductwork, or Indoor Air Quality / Filtration. Not to mention Smart HVAC excellent equipment replacement and installations. Cities we service throughout Contra Costa and Alameda County include: Alameda, Alamo, Antioch, Berkeley, Brentwood, Clayton, Clyde, Concord, Danville, Diablo, Discovery Bay, Dublin, El Cerrito, Hayward, Hercules, Kensington, Lafayette, Livermore, Martinez, Montclair, Moraga, Oakland, Oakley, Orinda, Piedmont, Pittsburg, Pleasant Hill, Pleasanton, Rossmoor, San Ramon, San Leandro and Walnut Creek, CA. Call today for your free estimate on equipment.

"Came out and looked over the furnace to make sure it's all ok. Looked at a lot of inner parts, cleaned some of them with fine tools. Worth it!"

MATT W on December 2024

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The Knightsen, CA homeowners’ guide to central a/c installations

From average costs to expert advice, get all the answers you need to get your job done.

  • Technician repairing air conditioner

    HomeAdvisor's Air Conditioning Repair Cost Guide gives the average price to fix an AC unit in your house. Find the cost of recharging the AC or fixing a freon leak. Get the price to repair or replace a compressor, handler, thermostat, duct, and more.

  • An AC system in the backyard of a house

    This guide explores the average cost of replacing your AC compressor and all of the factors that go into it, including size, type, and brand.

  • Detail of a HVAC system outside a brick house

    The cost of replacing an AC unit fan motor depends on warranties, labor, season, and more. This cost guide covers everything you need to know about this HVAC part.