Get matched with top air conditioning pros in Porter Ranch, CA

Q: Are ductless mini-split AC systems efficient?

• <div><p>It all depends on the unit&rsquo;s SEER (seasonal energy efficiency ratio). A higher <a href="https://www.angi.com/articles/what-does-seer-mean-your-ac.htm">SEER rating</a> means better efficiency and lower costs for your energy bills. </p><p>Take a look at the product you&rsquo;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.</p></div>

Q: What size window AC do I need?

• <div><p>The size window AC you need depends on the BTU and the size of the room you&rsquo;re cooling. For a room with 8-foot ceilings, look for about 20 BTU per square foot of the room. For example, a 12-by-12-foot room should have an air conditioner with 2,880 BTU. You can buy something slightly more powerful, but don&rsquo;t overshoot the BTU for a small room, or you&rsquo;ll waste energy and have higher bills.</p></div>

Q: Can an overheated compressor cause a fire?

• <div><p>Yes, it is possible. An electrical fire can break out if the compressor has inadequate ventilation. When it overheats but doesn't have a proper thermal cutout, this can cause the motor to short-circuit and catch fire. This risk is exacerbated if flammable materials, like dust and fallen leaves, are clogging the unit. The compressor overheating won't start a fire by itself, but poor maintenance and installation can increase the risk once it hits its breaking point and short-circuits.</p></div>

Q: How often should my air conditioner be serviced?

• <div><p>To keep your air conditioner in good working condition, you should have it serviced by a professional at least once per year, ideally in the spring before the cooling season begins. If your AC unit is 10 years or older, consider servicing it twice a year (once in the spring and once in the fall) to catch potential problems early and help it reach its full lifespan. During a service visit, a technician will inspect, clean, and replace parts as needed. Regular maintenance helps avoid costly repairs. As a DIY task, you can also clean the evaporator coils annually.</p></div>

Q: Is it normal for my attic to be hot?

• <div><p>It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren&rsquo;t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home&rsquo;s structure, including the roof, wood framing, and HVAC system. </p></div>

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Verified Reviews for Air Conditioning pros in Porter Ranch, CA

*The Angi rating for Air Conditioning companies in Porter Ranch, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

*The HomeAdvisor rating for Air Conditioning companies in Porter Ranch, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

Last update on June 17, 2026

Reviewed in June 2026
Pat brought new life to our older AC unit. His lifetime of experience with AC units cannot be overlooked. Our AC system feels brand new circulating air in places we had previously never noticed. Thank you Pat! - Chris (Granada Hills)
C & B Heating & Air Conditioning
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Reviewed in November 2025
Very happy with the new installation, replacement, and repair services for heating and air conditioning! The technicians were courteous, well-informed, and on time. They promptly resolved the problem and provided comprehensive explanations. A truly professional and trustworthy crew. Strongly...
Global Green Solutions
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Reviewed in April 2025
I got an AC Unit installed. They did a very good job and the customer service was excellent . The price was good.
A/D AIR CONDITIONING & HEATING, INC
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Reviewed in September 2024
We had our air conditioner replaced by All Temperatures Controlled INC in the spring. The Service Provider was knowledgeable in helping with our selection. We also had our air ducts replaced in order for more efficient air flow. Everyone at All Temperatures Controlled was very respectful and...
All Temperatures Controlled
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Reviewed in April 2024
Glad to have come across this amazing company. My friend told me about them and I had to give them a try . They repaired our air conditioner and their prices are fair .
Service Spartan
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Reviewed in April 2023
NOT HAVING AIR CONDITIONING FOR 40 PLUS YEARS IN THE SAN FERNANDO VALLEY BUT A SWAMP COOLER AND BUILT IN SWIMMING POOL MADE US CALL FOR A DUCTLESS AIR/HEAT PUMP SYSTEM FINALLY !! OLD AGE WILL DO THAT TO YOU! WE CALLED SO CAL CLIMATE CONTROL (FAMILY OWNED AND RUNNED BUSINESS) AND LOCAL....
SoCal Climate Control & Mechanical, Inc.
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Reviewed in September 2022
They fixed the problem immediately and did not try to sell me an entire AC unit. Would definitely use them again.
A1R Kare Pros
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Reviewed in August 2022
Angi, we just worked with Quality Comfort AC/Heating and Albert. He is the BEST! HE knows his stuff, did an incredible troubleshooting and fixed a simple issue that others wanted to charge thousands more...and still would've have missed the issue. He took the time to explain his process....
Quality Comfort Heating & Air Conditioning
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Reviewed in June 2022
Within about an hour of Joe Bryson's arrival my air conditioning was up and running again. Our air conditioning is now running better than ever. I'll be calling Joe Bryson Plumbing, Heating & AC again, and I strongly suggest them to everyone looking for a professional and affordable technician...
JOE BRYSON HEATING & AIR
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Reviewed in October 2021
They have a team, they instal air/heater, condenser unit and modified some vent in my home, they did it in one day, clean and vacuum everything,
JBM
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Find Air conditioning pros in Porter Ranch

Global Green Solutions

5.0(

248

)

Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+2 more

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Global Green Solutions did an excellent job replacing our old air conditioning system. The team arrived on time, worked efficiently, and made sure everything was installed properly. Our home feels much more comfortable now and the whole process was smooth."

+24

Response time3 days

9 neighbors recently requested a quote

Recommended by7%of homeowners

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AC Dave Heating & Air

4.9(

)

Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Porter Ranch, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"I called and they sent someone out the next day. They were prompt and efficient and most of all the swamp cooler was repaired. The price they charged was excellent. I also signed up for a maintenance contract based on how well they took care of this problem. There are not a lot of places left who service swamp coolers so this was a good find. I have already recommended them to my sister for service on the air conditioning system in her home."

Response time7 hrs

Response rate100%

7 neighbors recently requested a quote

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Air Duct Professionals

4.7(

1,517

)

Air Ducts & Vents - Clean

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"great!!! second time using Air Duct Professionals - Casey arrived promptly, called in advance. Explained everything he was doing, was courteous and professional. Will definitely use this place again and again."

+11

Response time1 day

1 neighbors recently requested a quote

Recommended by93%of homeowners

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Around The Clock Heating & Air Conditioning, Inc.

4.5(

836

)

Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 1967

Free estimates

Emergency services offered

"Arrived on time and fixed the problem. A bit more expensive than I would have liked but checking around probably not much more than elsewhere and our air conditioner was fixed same day in the middle of a heat wave."

+10

Response time1 day

39 neighbors recently requested a quote

Recommended by92%of homeowners

Central A/C - Service or Repair

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Sayed Haroon was very happy professional and helpful and very informative, I would recommend him for any service and next time if there?s a problem with any of my air conditioning system I?m definitely gonna be dealing with him"

1 neighbors recently requested a quote

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Active Air Specialist Inc.

5.0(

)

Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+2 more

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

Here at Active Air Specialists, we sustain our business on quality and integrity. With over 20 years of experience we are experts in the Heating and Cooling trade and are committed to quality from the beginning to the end of your project. please call our office @ 888 410 0677 We look forward to earning your business. Give us a call or click to schedule a quote today!

18 neighbors recently requested a quote

Recommended by44%of homeowners

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Just Be Cool Supply, LLC

4.9(

)

Central A/C - Service or RepairAir Ducts & Vents - CleanCentral A/C - Service or Repair - For Business

Serving Porter Ranch, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"At 600 am on a friday morning, I got on the Angi app to look for a swamp cooler expert. At 630 am I recived a phone call from Joel from "Just be cool supply." After expalining the job i needed done, he was able to come over later that day. Sunday morning he showed up removed a useless window and installed a new swamp cooler. Joel and his crew did an Amazing job! Very fast, friendly, good priced, and Profesional. I will be calling joel for all my HVAC needs in the future."

+11

Response time6 hrs

Response rate97%

12 neighbors recently requested a quote

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Top Energy Solutions, Inc.

4.9(

)

Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"I highly recommend Top Energy Solutions. During the heat wave my air conditioning system blew out hot air. I expected to wait days for a technician to come out. Leor sent one the next morning. The technician quickly located the problem and fixed it within minutes. Their employees are professional, courteous and very knowledgeable."

Roof Replacement - Owens Corning Shingle Roof

+87

Response time1 day

Response rate98%

5 neighbors recently requested a quote

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RR Electric Heating & Air

4.7(

)

Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 1994

Warranties offered

Credit card accepted

"I couldn't give them a 5 star yet because they are going to come back in the fall when it cools down to replace the ducting, so not done yet. So far so good though, I'm thinking maybe I don't need new ducting!!!"

Response time30 mins

Response rate100%

2 neighbors recently requested a quote

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S.V. Heating and Air Conditioning

4.7(

)

Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+2 more

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 1992

Emergency services offered

Warranties offered

"Simply put, Robs amazing. Years and years of HVAC experience ooze from this honest and caring guy. Did my install and then some for a more than fair price instead of what the other Angi pros wanted. He’s now my go to guy for any and all AC & Heating issues. Oh and he showed up exactly at the time he told me he would. Amazing"

Response time3 hrs

12 neighbors recently requested a quote

Recommended by100%of homeowners

Request Quote

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Showing 1-10 of 591

Air Conditioning questions, answered by experts

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.

The size window AC you need depends on the BTU and the size of the room you’re cooling. For a room with 8-foot ceilings, look for about 20 BTU per square foot of the room. For example, a 12-by-12-foot room should have an air conditioner with 2,880 BTU. You can buy something slightly more powerful, but don’t overshoot the BTU for a small room, or you’ll waste energy and have higher bills.

Yes, it is possible. An electrical fire can break out if the compressor has inadequate ventilation. When it overheats but doesn't have a proper thermal cutout, this can cause the motor to short-circuit and catch fire. This risk is exacerbated if flammable materials, like dust and fallen leaves, are clogging the unit. The compressor overheating won't start a fire by itself, but poor maintenance and installation can increase the risk once it hits its breaking point and short-circuits.

To keep your air conditioner in good working condition, you should have it serviced by a professional at least once per year, ideally in the spring before the cooling season begins. If your AC unit is 10 years or older, consider servicing it twice a year (once in the spring and once in the fall) to catch potential problems early and help it reach its full lifespan. During a service visit, a technician will inspect, clean, and replace parts as needed. Regular maintenance helps avoid costly repairs. As a DIY task, you can also clean the evaporator coils annually.

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

The Porter Ranch, CA homeowners’ guide to air conditioning services

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

See all articles

Angi
•
Aug 4, 2026Aug 4, 2026
How Much Does a Swamp Cooler Installation or Replacement Cost in Los Angeles, CA? [2026 Data]
Find the average swamp cooler installation or replacement cost in Los Angeles, CA. Learn what you can expect to pay for local evaporative cooling services.
Maddie Radcliff
•
May 5, 2026May 5, 2026
How Much Does It Cost to Install a Mini-Split in Los Angeles, CA? [2026 Data]
Need a new AC system? Find out what it costs to install a mini-split in Los Angeles, CA, and how to hire the right pro to get the job done.
Taylor Freitas
•
Jul 8, 2026Jul 8, 2026
How Much Does AC Replacement Cost in Los Angeles? [2026 Data]
Curious to find out how much AC replacement costs in Los Angeles, California? Learn about the main cost factors in this guide.
Alison Kasch
•
Jul 9, 2026Jul 9, 2026
Portable AC vs. Swamp Cooler: Which Should You Choose?
Choosing between a portable AC vs. swamp cooler comes down to energy efficiency, cooling preferences, and climate. Find out how these systems compare.
D.P. Taylor
•
May 22, 2026May 22, 2026
Is a Swamp Cooler Right for Your House?
Swamp coolers are cheaper to install and run than a central AC unit, but are they right for your home? This guide breaks down what you need to know.
Kate Fann
•
Apr 5, 2026Apr 5, 2026
Evaporative Coolers vs. Swamp Coolers: Explore the Pros, Cons, and Costs of Each One
Cooling your home in hot, dry climates can be a challenge. How do you keep your home cool? Learn whether an evaporative versus swamp cooler is your best option.