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TRUSTED BY ALTADENA, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon444
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Altadena

Avatar for All Temperatures Controlled

All Temperatures Controlled

4.89(
9
)
Approved Pro

All Temperatures Controlled

4.89(
9
)
Approved Pro
Customers say: Quick response
18 local quotes requested
47 years of experience

All Temperatures Controlled is the top choice for quality residential and commercial HVACR services in Chatsworth, Northridge, and the Greater Los Angeles area. Established in 1978, the company handles any size or scope of heating, ventilation, air conditioning, and refrigeration work. From repairs to installation to custom design and build ductwork, All Temperatures Controlled always ensure quality work and lasting results. The company also offers preventative maintenance programs to keep HVAC and refrigeration systems at peak efficiency and performance. Financing options are also available to help home or business owners with budget concerns. Call now to schedule an appointment. For commercial clients that need immediate assistance, All Temperatures Controlled is on-call 24 hours a day, 7 days a week, offering a 2-hour window arrival time to get your business back on track in no time.

"We had ATC take a look at our HVAC system that was not running well. Another company came out and told us the entire installation was wrong and everything had to be replaced, including all ducting. The price was astronomical. They also said that some structural work needed to be done, such as cutting through drywall and the house, which was not included. When Kevin from ATC came out to look, he said the ducting and the heater were just fine. The condenser and coil were old and probably should be replaced but it wasn’t an emergency. He suggested installing a dual controller and an additional return to improve the airflow issue we were having. He also gave us a quote for three options of new condenser/coils, along with financing options. The price was a fraction of the other company and the financing allowed us to do everything now rather than later. John and Kevin came out to do the installation. THEY WERE PHENOMENAL! They arrived on time, were so pleasant to speak with, were exceptionally patient with all our questions, were extremely knowledgeable about HVAC and split systems, were neat and clean, and did an extremely professional job of installation. That included all the drywall work that was necessary! And the improvement we received was unbelievable! Every room in the house was immediately receiving excellent airflow! We really thought we were in trouble, but these guys made sure we got all the cooling/heating we needed throughout the house with as little cost to us as possible. I would highly recommend the company and would especially recommend John and Kevin. They also fixed a split unit that wasn’t working. They can do it all!! Love these guys!"

Sandy T on March 2025

All Temperatures Controlled is the top choice for quality residential and commercial HVACR services in Chatsworth, Northridge, and the Greater Los Angeles area. Established in 1978, the company handles any size or scope of heating, ventilation, air conditioning, and refrigeration work. From repairs to installation to custom design and build ductwork, All Temperatures Controlled always ensure quality work and lasting results. The company also offers preventative maintenance programs to keep HVAC and refrigeration systems at peak efficiency and performance. Financing options are also available to help home or business owners with budget concerns. Call now to schedule an appointment. For commercial clients that need immediate assistance, All Temperatures Controlled is on-call 24 hours a day, 7 days a week, offering a 2-hour window arrival time to get your business back on track in no time.

"We had ATC take a look at our HVAC system that was not running well. Another company came out and told us the entire installation was wrong and everything had to be replaced, including all ducting. The price was astronomical. They also said that some structural work needed to be done, such as cutting through drywall and the house, which was not included. When Kevin from ATC came out to look, he said the ducting and the heater were just fine. The condenser and coil were old and probably should be replaced but it wasn’t an emergency. He suggested installing a dual controller and an additional return to improve the airflow issue we were having. He also gave us a quote for three options of new condenser/coils, along with financing options. The price was a fraction of the other company and the financing allowed us to do everything now rather than later. John and Kevin came out to do the installation. THEY WERE PHENOMENAL! They arrived on time, were so pleasant to speak with, were exceptionally patient with all our questions, were extremely knowledgeable about HVAC and split systems, were neat and clean, and did an extremely professional job of installation. That included all the drywall work that was necessary! And the improvement we received was unbelievable! Every room in the house was immediately receiving excellent airflow! We really thought we were in trouble, but these guys made sure we got all the cooling/heating we needed throughout the house with as little cost to us as possible. I would highly recommend the company and would especially recommend John and Kevin. They also fixed a split unit that wasn’t working. They can do it all!! Love these guys!"

Sandy T on March 2025


"Outstanding"

Lee M on August 2022

Experience our Powerful, Professional, & Affordable services. Call Power Pro Plumbing Heating & Air for plumbing, heating, or AC needs. Call: 833-457-8415.

"Outstanding"

Lee M on August 2022


Avatar for AC Dave Heating & Air

AC Dave Heating & Air

4.94(
86
)
Approved Pro

AC Dave Heating & Air

4.94(
86
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
21 local quotes requested

AC Dave is a family owned & operated small business with 5 employees. We accept all major credit cards, checks & cash at the time services are rendered. $24.99 discount for first time customers and new maintenance agreement of one year or more. License Number: 877683, give us a call today!

"Thank you for everything. Leo is knowledgeable, friendly, and performs terrific work."

Robert C on September 2025

AC Dave is a family owned & operated small business with 5 employees. We accept all major credit cards, checks & cash at the time services are rendered. $24.99 discount for first time customers and new maintenance agreement of one year or more. License Number: 877683, give us a call today!

"Thank you for everything. Leo is knowledgeable, friendly, and performs terrific work."

Robert C on September 2025


Avatar for Canyon City Air

Canyon City Air

5.00(
13
)
Approved Pro

Canyon City Air

5.00(
13
)
Approved Pro
Super Service Award
Customers say: Quick response
76 local quotes requested
2 years of experience

Canyon City Air is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"It was a good service."

Mario G on November 2025

Canyon City Air is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"It was a good service."

Mario G on November 2025


Avatar for DNA Heating & Cooling, Inc.

DNA Heating & Cooling, Inc.

4.85(
52
)
Approved Pro

DNA Heating & Cooling, Inc.

4.85(
52
)
Approved Pro
Customers say: True professional
44 local quotes requested
9 years of experience

With nearly 15 years in the Heating and Cooling industry, DNA Heating & Cooling, Inc., proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"Paid $1500 for drain job on our hvac system the previous folks of our place didnt do. Our ceiling was low so they had to make a makeshift drain. Overall the job was done and it works. Its not the best job, but it does work."

Albert C on August 2025

With nearly 15 years in the Heating and Cooling industry, DNA Heating & Cooling, Inc., proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"Paid $1500 for drain job on our hvac system the previous folks of our place didnt do. Our ceiling was low so they had to make a makeshift drain. Overall the job was done and it works. Its not the best job, but it does work."

Albert C on August 2025


Avatar for SoCal Climate Control - LA

SoCal Climate Control - LA

4.44(
347
)
Approved Pro

SoCal Climate Control - LA

4.44(
347
)
Approved Pro
Customers say: True professional
456 local quotes requested
7 years of experience

With over 30 years of combined experience in the HVAC industry, SoCal Climate Control & Mechanical, Inc. is your industry expert in Southern California. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today, and we look forward to working with you!

"David Parks Senior HVAC Technician was very knowledgeable and listened to my needs. Susie in the office was polite and a joy to speak to. The crew that installed the ductwork worked efficiently and cleaned up afterwards. SoCal Climate Control did everything they promised at a reasonable price. I would recommend them to my neighbors and family members."

Greg V on October 2024

With over 30 years of combined experience in the HVAC industry, SoCal Climate Control & Mechanical, Inc. is your industry expert in Southern California. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today, and we look forward to working with you!

"David Parks Senior HVAC Technician was very knowledgeable and listened to my needs. Susie in the office was polite and a joy to speak to. The crew that installed the ductwork worked efficiently and cleaned up afterwards. SoCal Climate Control did everything they promised at a reasonable price. I would recommend them to my neighbors and family members."

Greg V on October 2024


Avatar for Trinity Heating and AC

Trinity Heating and AC

5.00(
29
)
Approved Pro

Trinity Heating and AC

5.00(
29
)
Approved Pro
Super Service Award
Customers say: Quick response
79 local quotes requested
4 years of experience

Trinity Heating and AC is so much more than another heating/AC company. We exceed our customer’s expectations and standards in a number of ways; such as arriving within the promised time frame or leave our work space cleaner then we found it! We provide custom solutions that take all factors into consideration so we can design a system that will meet the needs of your home and everyone in it! We offer so much more then just replacement of your existing system or installation of a new one. Do you have high utility bills when you are running the system, or someone’s allergies are aggravated when running the system? No matter what your need, if it has anything to do with HEATING, COOLING, AIR FLOW, or AIR QUALITY; TRINITY HEATING AND AC is ready to help!

"Jimmy the technician was amazing. He gave me a thorough run down of what he was doing and future repairs. I was very satisfied with the professionalism. Curtiss Allen "

Curtiss A on December 2025

Trinity Heating and AC is so much more than another heating/AC company. We exceed our customer’s expectations and standards in a number of ways; such as arriving within the promised time frame or leave our work space cleaner then we found it! We provide custom solutions that take all factors into consideration so we can design a system that will meet the needs of your home and everyone in it! We offer so much more then just replacement of your existing system or installation of a new one. Do you have high utility bills when you are running the system, or someone’s allergies are aggravated when running the system? No matter what your need, if it has anything to do with HEATING, COOLING, AIR FLOW, or AIR QUALITY; TRINITY HEATING AND AC is ready to help!

"Jimmy the technician was amazing. He gave me a thorough run down of what he was doing and future repairs. I was very satisfied with the professionalism. Curtiss Allen "

Curtiss A on December 2025


Avatar for Insulation Commandos of Southern California

Insulation Commandos of Southern California

4.44(
348
)
Approved Pro

Insulation Commandos of Southern California

4.44(
348
)
Approved Pro
Customers say: True professional
471 local quotes requested
7 years of experience

Our services include: Blown in Cellulose & Fiberglass Attic Insulation, Batted (Rolled) Attic Insulation, Fireproof Blown Rockwool Insulation, Fireproof Batted Rockwool Insulation, Wall Insulation, Drill n Fill Wall & Ceiling Insulation, Crawl Space Insulation, Spray Foam Insulation, TAP Pest Control Insulation, New Construction and Commercial Insulation, Insulation Removal, Attic Air Sealing, Attic Decontamination & Sanitization, Radiant Barrier Insulation, Rodent Proofing, Soundproofing, Air Duct Replacement and Cut ins, Air Duct & Dryer Vent Cleaning, Attic Fan Installation, Indoor Air Quality products, Wildfire Ember Mesh, Kitchen Hood Venting & Dryer Duct Replacement.

"I vetted several companies for this project and Insulation Commandos was by far the most thorough and professional. The installers and workmanship were top notch and the price was reasonable. Could not be happier. "

Louis M on September 2025

Our services include: Blown in Cellulose & Fiberglass Attic Insulation, Batted (Rolled) Attic Insulation, Fireproof Blown Rockwool Insulation, Fireproof Batted Rockwool Insulation, Wall Insulation, Drill n Fill Wall & Ceiling Insulation, Crawl Space Insulation, Spray Foam Insulation, TAP Pest Control Insulation, New Construction and Commercial Insulation, Insulation Removal, Attic Air Sealing, Attic Decontamination & Sanitization, Radiant Barrier Insulation, Rodent Proofing, Soundproofing, Air Duct Replacement and Cut ins, Air Duct & Dryer Vent Cleaning, Attic Fan Installation, Indoor Air Quality products, Wildfire Ember Mesh, Kitchen Hood Venting & Dryer Duct Replacement.

"I vetted several companies for this project and Insulation Commandos was by far the most thorough and professional. The installers and workmanship were top notch and the price was reasonable. Could not be happier. "

Louis M on September 2025


Avatar for CAL CLIMATE CORP

CAL CLIMATE CORP

4.97(
138
)
Approved Pro

CAL CLIMATE CORP

4.97(
138
)
Approved Pro
Customers say: True professional
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
131 local quotes requested

Cal Climate is family owned and operated, bringing a personal touch to everything we do. In 1970, founder Andrew "Andy" Sauer started the company with a simple vision - provide friendly, reliable service and products. Andy knew that Cal Climate would succeed by building a reputation based on going the extra distance. His sons, Tom and Bob, continue to carry on that awesome tradition today. We take pride in the fact that 90% of our new business comes from referral's. Please if you have any further questions or you would like to schedule a service call or a free installation appointment please contact us

"This review is long overdue, but I need to praise Calclimate for their excellent service! Tom and Chris were professional, reliable, and provided quality work. Tom replaced my father’s AC unit last summer on a short notice and provided much needed relief for my father, who was physically impaired at the time. I highly recommend Calclimate and will definitely use them again!"

Licet G on March 2025

Cal Climate is family owned and operated, bringing a personal touch to everything we do. In 1970, founder Andrew "Andy" Sauer started the company with a simple vision - provide friendly, reliable service and products. Andy knew that Cal Climate would succeed by building a reputation based on going the extra distance. His sons, Tom and Bob, continue to carry on that awesome tradition today. We take pride in the fact that 90% of our new business comes from referral's. Please if you have any further questions or you would like to schedule a service call or a free installation appointment please contact us

"This review is long overdue, but I need to praise Calclimate for their excellent service! Tom and Chris were professional, reliable, and provided quality work. Tom replaced my father’s AC unit last summer on a short notice and provided much needed relief for my father, who was physically impaired at the time. I highly recommend Calclimate and will definitely use them again!"

Licet G on March 2025


Avatar for Temp Air System, Inc.

Temp Air System, Inc.

4.80(
25
)
Approved Pro

Temp Air System, Inc.

4.80(
25
)
Approved Pro
Customers say: True professional
23 years of experience
Free onsite estimate

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Very professional"

Brendan E on October 2022

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Very professional"

Brendan E on October 2022

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Heating and Air Conditioning questions, answered by experts

The DOE is phasing out AC units with SEER ratings that fall below 14 or 15. The exact minimum rating depends on your region. In the northern United States, new ACs must have a minimum SEER rating of 14, though you can still buy and install older systems as long as they were compliant when they were manufactured. In the southern and southwestern United States, you cannot buy or install older air conditioners with lower SEER ratings. The minimum rating is between 14.5 and 15, depending on the power of the unit.

A non-maintained AC is more likely to perform poorly, increase your energy bills, and undergo more severe issues like breakage and water damage. That’s why DIY cleaning or professional maintenance is recommended annually. Otherwise, you might end up paying more in the end than you would for annual service. You can purchase cheap AC cleaning kits if you prefer going the DIY route.

There are a few things you can do to make your AC repair technician’s job easier and your home more comfortable while you wait for AC repair:

  • Cut back trees, shrubs, and weeds around the outdoor compressor 

  • Clear a pathway inside and outside to your AC components

  • Set up a ladder for attic access if necessary

  • Pull your window AC out of the window and place in an easily accessible spot

  • Supplement with fans and open windows to help keep your house comfortable

The right type of HVAC system will depend on several factors, including your climate, budget, preferences, and existing HVAC setup. For example, if you live in an area that experiences extreme weather, then a split system would likely be the best option. Or, if budget is a concern, consider installing a ductless system in just one room.

There are a few ways to reduce your electricity bills if you use window AC units to keep cool. Set the unit temperature at least 1 degree higher than it is currently to reduce costs. Keep the unit clean for it to run efficiently. You may want to hire a window AC specialist near you to inspect the unit once a year and keep it in tip-top shape.

The Altadena, CA homeowners’ guide to heating and air conditioning services

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