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Avatar for Cool Air Technologies Inc
Cool Air Technologies Inc
4.9(
493
)

Serving Irvine, CA and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"We just had a new HVAC system installed in our home in Aliso Viejo. The contractor was Cool Air Technologies, Bill McIntosh, (714)863-0626. We were very impressed with the new unit put in the attic and back yard, the workmanship, the professionalism, the quick response time to get our appointment, the testing of the new units before they left, the lessons for us on how to use it, and the complete clean up and hauling every piece of the old unit away when they left. They even installed new air vents/registers in every room and air filters! Very impressive and highly recommended to everyone! [*** Link removed ***]"
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Response time4 days
Response rate100%
9 neighbors recently requested a quote
Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)

Serving Irvine, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"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 suggested!"
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+24

Response time3 days
9 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Total Home Environmental HVAC Co.
Total Home Environmental HVAC Co.
4.7(
101
)

Serving Irvine, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Nathan and Gordon at Total Home Environmental are lifesavers! I was facing estimates of $10,000 to $20,000 to replace my entire AC and heating system but instead they indicated that my 25 year-old AC compressor could be resuscitated by thoroughly cleaning the terminals and adding a hard-start kit. No other HVAC technician that came out gave me this option but they pulled it off for a fraction of the price of a new install!!! They are honest and knowledgeable professionals! Thank you so much!"
Technician at Service Residence
Installing UV Sterilization Light
Installing UV Bulb to fight Covid
Removing tools from stocked truck
Stocked Repair Trucks

+17

Response time3 hrs
Response rate99%
110 neighbors recently requested a quote
Avatar for Air Duct Professionals
Air Duct Professionals
4.7(
1,517
)

Serving Irvine, CA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Sean was great about repairing my disconnected dryer air duct having to go into the crawl space and figure out what was going on. I'm glad he was able to get it done very quickly as well. He also had a very good attitude about doing the work."
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+11

Response time1 day
1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Ionel Firuta
Ionel Firuta
5.0(
30
)

Serving Irvine, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"John was incredibly knowledgeable about AC units and I had no idea what was wrong, but he assessed the situation. John was timely, fixed the issues, and I would highly recommend to anyone who needs AC repair!! Absolutely wonderful!"
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Heating and Air Conditioning Project
Heating and Air Conditioning Project

+19

Response time10 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for Trabuco Air
Trabuco Air
4.6(
130
)

Serving Irvine, CA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"The team from Trabuco Hills Air did a fantastic job. They were thorough, courteous, and extremely professional! Thank you so much to Tim and everyone at Trabuco Hills Air. They were such an amazing pleasure to work with. I truly appreciate all you did for my family and forever grateful for the Nest thermostat. I highly recommend Trabuco Hills Air for all of your Heating/AC needs. Thank you again!!!"
Response time5 hrs
Recommended by94%of homeowners
Avatar for FIRST CLASS COMFORT HVAC LLC
FIRST CLASS COMFORT HVAC LLC
5.0(
19
)

Serving Irvine, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Jeremy and his team installed my new AC unit, and I couldn?t be happier with the experience. They showed up on time, were professional and friendly, and made sure everything was working perfectly before they left. Highly recommend them for any HVAC or AC installation work!"
FCC HVAC
FCC HVAC
FCC HVAC
FCC HVAC
FCC HVAC

+26

Response time5 hrs
Response rate100%
23 neighbors recently requested a quote
Avatar for Trinity Heating and AC
Trinity Heating and AC
5.0(
10
)

Serving Irvine, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Chris came by for a normal AC tuneup and as he was finishing up, we told him about some issues with our dishwasher and master bathroom sink and asked if he knew a plumber. He took care of both our problems right then and there! I’m not sure there’s anything he can’t fix. Chris is our go to guy for EVERYTHING ac/furnace/plumbing and he should be yours too!"
After: brand new furnace with industrial grade filtration system. Re-wrapped ductwork with fiberglass free wrapping and acoustic soundproof closet/return cavity.
After: 2 Stage Variable Speed Furnace installed perfectly!
After: Properly sized, energy efficient, and installed to code.
Before: Homeowner had tried multiple times to get the pilot light ignited.
Before: Old furnace not installed to code.

+31

4 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Breeze AC Solutions Inc.
Breeze AC Solutions Inc.
4.9(
16
)

Serving Irvine, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Great guys really took the time to fully advise us on our options. We went with service, cleaning and small repair instead of new system. Can't be happier. System works great and really nice guys who take pride in a good job . My only options for ac work from now on is from Ahl air conditioning. Nice job guy's"
25 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for All City Plumbing, Air & Electrical
All City Plumbing, Air & Electrical
4.9(
270
)

Serving Irvine, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Emergency services offered

Warranties offered

"Tyler Jones from All City Plumbing Air and Electrical did a great job replacing a gas valve in our garage. He was friendly and easy to engage with, clearly knowledgeable, and took the time to explain what he was doing. The work was completed efficiently and effectively, and everything was handled professionally from start to finish. I’d definitely recommend Tyler and All City for plumbing and gas-related work."
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+42

13 neighbors recently requested a quote
Recommended by97%of homeowners
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Air Conditioning questions, answered by experts

The standard rule for return duct sizing is that the return vent should be the same size or larger than the supply vent. This will ensure balanced airflow in your home and reduce strain on your HVAC system.

You need to know the square footage of your home first. Multiply that number by 20, which will get you the BTUs (British Thermal Units) needed to cool your home efficiently. Homes up to 1,000 square feet usually need a 1.5-ton unit; homes 1,000 to 1,200 square feet usually need a 1.75-ton unit, and homes 1,200 to 1,400 square feet usually need a 1.9-ton unit. Talk to a local pro for more specific advice on your home. 

Choosing between a ductless mini-split and central AC depends on your specific needs. Ductless mini-splits are ideal for targeted cooling, providing zoned comfort and energy efficiency. They are perfect for smaller spaces or homes lacking ductwork. In contrast, central AC offers consistent cooling throughout the entire house but requires ductwork and may be less energy-efficient for smaller spaces. 

Consider factors like budget, home size, and cooling preferences to make the right choice. Combining both systems, with a ductless mini-split in specific areas, can also be a viable solution for tailored comfort and overall efficiency.

The average cost to replace or install a new HVAC system is around $7,500. However, the price can range from $5,000 to $12,500, depending on factors like the size of your home, the type and brand of the unit, and your specific heating and cooling needs. If you only need to replace certain components, the cost will be lower; for example, a new AC unit can cost between $2,200 and $5,500, while a new furnace costs $3,200 to $6,000. If additional work like new ductwork is required, the total cost could be as high as $22,000. It's best to contact a local HVAC company for an accurate quote.

While many states do not have specific licensing requirements for HVAC companies, your local city or county might. It's always a good idea to check local requirements online and use a tool like Angi’s contractor license lookup to confirm that the company you’re considering is licensed. Regardless of licensing, you should always ensure the company you hire is fully insured to avoid potential lawsuits if a technician is injured on your property. Additionally, it is recommended to check if the company holds third-party certifications, such as North American Technician Excellence (NATE) certification or R-410A certification, which qualifies them to work with HVAC refrigerants.

The Irvine, CA homeowners’ guide to air conditioning services

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