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Best air conditioning pros near Knightsen, CA

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Top-Rated Air conditioning pros in Knightsen - Updated Nov 2026

Avatar for Guerrero's Heating & Air Conditioning
Guerrero's Heating & Air Conditioning
4.7(
61
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Knightsen, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"I was fortunate to receive service on the same day I called. My issue was difficult to diagnose, as many have tried before. They were willing to step in and try to resolve my issue for good. They were successful at their first attempt. I am grateful to Guerrero Heating & Air this Labor Day weekend of 100*F+ weather."
Response time3 hrs
Response rate87%
2 neighbors recently requested a quote
Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.4(
722
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+3 more

Serving Knightsen, CA and surrounding areas

Approved (Corporate)

In business since 1981

Free estimates

Warranties offered

"This is the third time I have used Albert Nahman. This time was for a water leak with an unclear origin. They did a great job diagnosing the problem and took the time to explain what they found and offer options on potential fixes. I really appreciate the care their plumber took in tracking down the problem and providing a realistic quote for the cost and time to fix the problem. They also arrive on time and do a great job cleaning up after the work is done. A+++ company. Will definitely use them again the in future."
Living room Mini-Split
Aquasana home Filtration
Almost no disturbance at EBMUD meter
Navien with filtration to protect the heat exchanger
New house valve and Pressure Reducing Valve

+73

Response time8 hrs
Response rate100%
44 neighbors recently requested a quote
Jim's Air Systems
4.5(
12
)
Central A/C - InstallCentral A/C - Install - For BusinessDuctless Mini-split A/C - Install or Replace

Serving Knightsen, CA and surrounding areas

Approved

In business since 1978

Free estimates

Warranties offered

"I found Jim's Air Systems through HomeAdvisor, and Josh was the first contractor to reach out to me personally, not through an automated service. From the start, communication with him was excellent. I provided him with a detailed description of the job, along with model numbers and photos of my existing system. He reviewed everything carefully rather than giving me a quick, generic quote. I received another bid for comparison, but the other contractor was significantly more expensive and wanted to upsell me. It was refreshing that Josh understood I had done my research, knew what I wanted, and didn't pressure me into unnecessary upgrades. Josh's team arrived on time, completed the work as scheduled, obtained the required permit, and left my home as clean as they found it. Overall, a great experience and a solid value. I wouldn't hesitate to recommend them."
Response time11 hrs
Response rate100%
53 neighbors recently requested a quote
Avatar for Tyndall HVAC, Inc.
Tyndall HVAC, Inc.
4.2(
108
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+1 more

Serving Knightsen, CA and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

"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."
Response time1 day
13 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for EveresTech Heating & Air Conditioning Inc.
EveresTech Heating & Air Conditioning Inc.
5.0(
4
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+2 more

Serving Knightsen, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"I had a great experience with them. They were professional, friendly, and did a great job with the work. They explained everything clearly and made sure everything was working properly before they left. I really appreciate their service and would definitely recommend them to anyone needing heating or air conditioning work."
Full System Changeout
Before
After
Before
After

+8

6 neighbors recently requested a quote
Avatar for Tajtaj Pro Solutions
Tajtaj Pro Solutions
4.7(
18
)
Air Ducts & Vents - Clean

Serving Knightsen, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

Tajtaj Pro Solutions is a professional and reliable company dedicated to providing top-notch services to our clients in Oakland, CA. Our team of experienced and trained cleaners is ready to tackle any job, big or small. We use the latest cleaning products and state-of-the-art equipment to thoroughly clean and sanitize your air ducts, dryer vents, and more. With over 10 years of experience, we are passionate about helping maintain your property's pristine condition with our air duct cleaning services.

Duct cleaning-repair
Duct cleaning-repair
Duct cleaning-repair
Duct cleaning-repair
Duct cleaning-repair

+8

2 neighbors recently requested a quote
Recommended by5%of homeowners
Avatar for Bay Area Comfort Solutions HVAC
Bay Area Comfort Solutions HVAC
5.0(
3
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For BusinessDuctless Mini-split A/C - Install or Replace

Serving Knightsen, CA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Mike and his crew are great. We have used them before for smaller repair work and they were excellent for that too. This was a major projectâ ¦ replacing the old, worn out heating and air conditioning units in a house we bought and are renovating to move in. They did a great job!"
Response time2 days
Recommended by100%of homeowners
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Air Conditioning FAQs, answered by experts

No, a furnace is not the same thing as an AC, or air conditioner, but these are both parts of an HVAC system. They both use air ducts to transport cool or hot air around your home to achieve a comfortable temperature set by your thermostat. An AC runs on electricity, while a furnace can use different fuel sources.

It all depends on the unit’s SEER (seasonal energy efficiency ratio). A higher SEER rating means better efficiency and lower costs for your energy bills. 

Take a look at the product you’re considering purchasing and compare it to other models to decide which one is affordable upfront but will keep your energy costs low over time.

While Freon is mostly odorless, a Freon leak will produce a faint chloroform-like smell. Some people find that Freon's odor has a subtle sweetness to it. Some telltale signs of a Freon leak beyond odor include ice crystals on your evaporator coil, bubbling sounds, and hissing noises.  

It depends on the specifics of your warranty. The motor is likely not covered if you’re working with a limited warranty. The same goes for other components like the compressor and evaporator coil. Some extended warranties will cover the blower and fan motor, so read the fine print before signing up. Additionally, the manufacturer may offer a warranty for the parts, including the motor, though there’s likely to be a strict time limit for this coverage.

Yes. Return air vents are responsible for gathering and pulling in the warmer air. Once they draw it in, your system conditions the air by removing the warmer molecules from it, allowing your air conditioner to dispense the cooler air back into your home. Not only does this create a more comfortable environment for you, but it also keeps your air conditioner from overworking, resulting in lower energy bills. 

The Knightsen, CA homeowners’ guide to air conditioning services

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