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4.7

(561 reviews)

Top-rated heating and air conditioning pros.

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Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Top-notch installation! The new HVAC system is super efficient and the crew explained everything clearly. They handled the entire job with care. I feel the temperature difference immediately?very satisfied!"
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+24

Response time3 days
10 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for AC Dave Heating & Air
AC Dave Heating & Air
4.9(
93
)

Serving Simi Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"AC Dave is a skilled and trustworthy HVAC company that does quality work at a competitive price. I had an aging four ton system that was on its last leg. My funds were tight at the time, so they suggested installing more efficient ducting to extend the system’s life. That was three years ago, which allowed me to save for the inevitable expense of replacement. And when that time came, I was given a comprehensive estimate and the installation went smoothly. They also did a follow up to tweak the system for maximum reliability. AC Dave is a small company, so you may not get next-day service, but they will work with you and stand by their work. In today’s less and less neighborly world, that is a real asset."
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+6

Response time7 hrs
7 neighbors recently requested a quote
Recommended by96%of homeowners
Efficiency Air, Inc.
4.8(
320
)

Serving Simi Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1985

Free estimates

Credit card accepted

"Worked with Tim - was looking for new HVAC system. He was honest and provided the best price for what you got (literally thousands of dollars cheaper from other options I was finding). Was very communicative and easy to work with. He made sure to educate you on the ins-and-outs of HVAC systems, and did not try to upsell you like other companies might do. He and Efficiency Air definitely got me as a new continued client."
A/C Condensers
A/C Condensers
A/C Condensers
A/C Condensers
Canoga Park, Goodman A/C

+50

Response time7 hrs
102 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Quality Comfort Heating & Air Conditioning
Quality Comfort Heating & Air Conditioning
4.9(
23
)

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Quality Comfort replaced our old hvac system with a new 4 ton heat pump and all new duck work. They were very accommodating with some of my requests like moving the system back for free space. Albert and his team are amazing workers. I will hire them again and I am very happy with there work."
Ac install
Tune Up Special
Condenser
Fujitsu Heat Pump Condenser
Fujitsu Wall Mount Unit

+1

Response time7 hrs
Recommended by86%of homeowners
Avatar for Highland Air LLC
Highland Air LLC
4.9(
111
)

Serving Simi Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Highland Air did a great job servicing my furnace and HVAC systems. Shai showed up on time, figured out the issue quickly, and really knows his stuff. Everything was handled smoothly, and I appreciated how efficient and straightforward he was. Definitely recommend him if you need reliable HVAC work."
Condenser
Indoor unit
Before
During
After

+95

Response time4 hrs
Response rate89%
4 neighbors recently requested a quote
Avatar for Just Be Cool Supply LLC
Just Be Cool Supply LLC
5.0(
8
)

Serving Simi Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"I needed my HVAC system urgently repaired, the technician arrived promptly to resolved the issue. They were professional and knowledgeable and gave me honest recommendations & also was very helpful. Highly recommend! Thank you!"
Heating & A/C Project
Heating and air
5 ton split system
Heating & A/C Project
Heating and air

+22

2 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Help-Me HVAC LLC
Help-Me HVAC LLC
4.9(
13
)

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Haroon provided excellent HVAC service from start to finish at Help-Me HVAC LLC. He was professional, punctual, and courteous, and he took the time to explain everything clearly. The service was efficient, the workmanship was excellent, and the whole experience was smooth and stress-free. I would definitely recommend Help-Me HVAC LLC and Haroon for reliable HVAC service."
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Heating and Air Conditioning questions, answered by experts

Florida rooms can have heat or air conditioning, although not all do. These rooms can be added to the existing HVAC system or use a mini-split system, or they may just use a ceiling fan or the breeze from the windows for cooling. Florida rooms with air conditioning often have glass windows to keep the cool inside instead of just mesh screens.

If there’s a freon leak in your home’s AC unit, it will cause the system to work overtime to cool the house. That issue will result in higher energy bills and it will take much longer for cool air to disperse throughout the home. If your system has a freon leak during the summer, it can make hot days miserable. That’s why it’s important to hire an HVAC professional to resolve a freon leak as quickly as possible.

You can protect your air conditioner in the winter by turning off the power at the thermostat and performing routine HVAC maintenance in the spring. Regular maintenance, cleaning, and repair of your AC unit helps protect it and extend its life span. If you have a window AC unit, remove it from the window and store it in a dry place during the winter. Window units cannot withstand freezing temperatures. Keeping them in your window also allows cold air to seep into your home.

No. Your furnace does not run your air conditioner. Both units use the same system of ductwork to move conditioned air throughout your home, but you can have a furnace without having an air conditioner and vice versa. Furnaces are only for heating your home. You can buy a system that does both, however, like a split system or a heat pump (yes, heat pumps cool, too).

Though it may seem redundant, you can absolutely have a central AC unit and a window AC in your home. In fact, if you place a window AC unit near your central air, it can help move the cooler air throughout your home. But doubling up on your AC methods can get pricey, so factor in cost accordingly.

The Simi Valley, 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.