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TRUSTED BY SOUTH PASADENA, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon217
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in South Pasadena - Updated Nov 2026

Avatar for AC Dave Heating & Air
AC Dave Heating & Air
4.9(
93
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+47 more

Serving South Pasadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"We noticed a foul smell coming from one of the vents in our HVAC system. We turned the system off and called AC Dave. Dave sent Justin and James to troubleshoot the problem. They quickly found a tear in one of our ducts--and the remains of a dead rodent. They cut open the duct, cleaned it and resealed it. We had heat again, about an hour after they arrived. Very fast and competent service."
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+6

Response time7 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for MULTI AIR SERVICE LLC
MULTI AIR SERVICE LLC
5.0(
22
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairThermostat - Install or Replace

Serving South Pasadena, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Good and immediate service. Ricardo is, punctual, knowledgeable and nice. Ricardo responded immediately and came over a few hours later , ready to work (compared to other service providers I had contacted, who responded by Email requesting $100 plus just to show up for "evaluation"). The problem was that the A/C blower fan has been working continuously even when the thermostat controller is in "off" position. He replaced the internal electronic board with a new board and change some of the gas line pipes into the furnace unit, to bring them up to a modern safety code. The price is a little steep but the customer is happy."
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+37

Recommended by77%of homeowners
Avatar for Air Duct Professionals
Air Duct Professionals
4.7(
1,518
)
Air Ducts & Vents - Clean

Serving South Pasadena, CA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Great. My daughter contracted Air Duct Professionals to do her home. James, the technician, was professional, knowledgeable and did a quality job. I contacted Air Duct to do my home and requested James. James arrived on time and did an excellent job. He also helped me with a leak with my HVAC Condenser and diagnosed and fixed the issue."
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+11

Response time1 day
2 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Help-Me HVAC LLC
Help-Me HVAC LLC
5.0(
27
)
Electric Furnace / Forced Air Heating System - RepairCentral A/C - Service or RepairGas Furnace / Forced Air Heating System - Repair+2 more

Serving South Pasadena, 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."
My jobs
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My jobs
1 neighbors recently requested a quote
Avatar for All City Plumbing, Air & Electrical
All City Plumbing, Air & Electrical
4.9(
273
)
Central A/C - InstallCentral A/C - Service or Repair

Serving South Pasadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Emergency services offered

Warranties offered

The industry's best technicians make the happiest customers. Turn to the pros at All City Plumbing, Air, & Electrical for all of your plumbing, HVAC, and electrical needs. Proudly serving San Bernardino, Riverside, Los Angeles, and Orange Counties. We have over 5000s 5 star reviews across the web from our thrilled customers. Our company goal is to make sure that we have 100% customer satisfaction. We have options and payment plans that can fit in everyones budget. We provide free estimates and you only pay when you're happy. It's no surprise we've received the Angie's List Super Service Award six years in a row! Established in 2009. ACP was created to deliver exceptional service with the highest quality of craftsmanship. We guarantee you will be happy with our services in that we offer a money back guarantee. Our technicians are regarded by their peers to be some of the best in the industry. Our service experts are continuously trained. There isn't a plumbing or hvac problem we can't solve. We have the experience, knowledge and focus to solve any problem you may have. Give us a call today and let us earn your confidence.

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+42

11 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Around The Clock Heating & Air Conditioning, Inc.
Around The Clock Heating & Air Conditioning, Inc.
4.5(
836
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallHeat Pump - Install or Replace+8 more

Serving South Pasadena, CA and surrounding areas

Approved

In business since 1967

Free estimates

Emergency services offered

"After reading reviews on Angie's List and finding out that they do installations for Costco, we chose Around the Clock (even though they were the most expensive of the 3 quotes we received) because we wanted to make sure we did not skimp on such a major project - installation of a new HVAC system. While the system is working great and our house is much cooler than with our swamp cooler and/or window AC units, we were disappointed with a few aspects of the job. As far as when the crew was on the job... they were on time, clean, and the job got completed in the time that they said it would - 2 days. My concerns came up in the days/weeks after the job was completed when a contractor came to the house to look at some additional work being done. Part of the quote from our job was that they would "remove" two existing floor gas heaters in our home. When the contractor and I were looking at repairing the hardwood floors where the heaters have been removed, we found that one of the heaters had actually just been left under the house in the crawlspace. A few minutes later, I asked my contractor to check out the attic because I knew that the workers had smashed an asbestos vent pipe from one of the old heaters so they could run electric wires through it from the crawlspace under the house up to the attic and eventually the package HVAC unit on the roof. I know that health issues arise with asbestos when it disturbed (like smashing it apart and leaving it exposed in the attic.) The contractor confirmed that this was the case and he was rather alarmed and surprised that a "retail" top-dollar job had been done with these methods. After talking with the owner, Alan, about my concerns, his response was basically this is the way that things are done. He said that leaving the heater under the house is called "dropping" the unit and that the unit was too big to remove out of the crawl space. I think that with some effort and a Sawzall it could have been removed, but either way, I wish that they would have been clearer that they were leaving smashed up appliances under our house. I told him about the asbestos pipe and he told me, again, often times that is "how it's done" because it's the easiest way to get the wires through the house. When I told him I had safety concerns about the asbestos being exposed, he said that the workers should have put some kind of coating on the exposed areas as a protection against any of the asbestos fibers getting airborne. I sent him photos confirming that there was no coating applied. During this call, he mentioned something about "sealing" the unit to the roof (to protect against rain penetrating where the HVAC and the roof meet) and that it had not been done yet because they thought maybe we were getting a new roof very soon. This was the first I had heard that the job was not complete and I don't know where the idea of the new roof came from other than our roof is old and going to need to be done in the next few years. Alan said he would send out someone to coat the pipe and do the roof "sealing". They came out that day or the next to do the work. After talking to the worker about the pipe (same guy who was heading the crew on the installation days), he acted like this was a waste of time and told me, "We never put this coating on these asbestos pipes when we break them." That was disconcerning and it made me feel like the owner doesn't really know what his crews are/are not doing or, more likely, that they just are doing whatever they need to do to get the job done quick, cheap and easy. Overall - the big disappointment for me and my wife... if we wanted the job to be "quick, cheap, easy, and maybe cut a few corners, we would have gone with a different HVAC company that was much cheaper, and we would expect that because "you get what you pay for", but we didn't, we went for the retail installer and feel that the job was less than retail."
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+10

Response time1 day
18 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Temp Air System, Inc.
Temp Air System, Inc.
4.8(
59
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceAir Ducts & Vents - Clean+5 more

Serving South Pasadena, CA and surrounding areas

Approved

In business since 2002

Free estimates

Credit card accepted

"We had Temp Air install our AC unit. The best decision we ever made. They were fast, reliable and dependable. Excellent customer service, did a phenomenal job. After a couple of years something was going on with our unit, I called them and immediately they send out a technician Juan, who was phenomenal. He explained what the issue was and resolved it asap! Highly recommend this company!"
Mini Split Installation
Mini Split Installation
Mini Split Installation
Mini Split Installation
Mini Split Installation

+14

Response time10 hrs
Response rate99%
10 neighbors recently requested a quote
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Heating and Air Conditioning FAQs, answered by experts

AC evaporator coils should be cleaned at least once per year to keep your unit in good condition. For optimal performance, consider cleaning them twice a year—once before and once after the main cooling season. More frequent cleanings may be necessary for older systems, units with performance issues, or those in climates with high levels of humidity, dust, and dirt.

Choosing a unit with higher BTUs can use more electricity if the BTUs are more than what’s necessary for your room size. However, choosing an AC with BTUs that match the size of your room or house, your unit will cool your space efficiently. On the flip side, choosing a system with not enough BTUs can cause the system to work harder to try to cool the space, leading to more electricity consumption and higher energy bills.

ACs don't run on water. They're not connected to drain pipes or any part of your plumbing system. However, they need refrigerant to run. Refrigerant is a gas or liquid that has a low boiling point and absorbs the heat in your home. ACs need this in order to be functional and cool your home. If you suspect your AC is low on refrigerant, you need to contact a licensed HVAC professional. Refrigerant is a dangerous chemical that requires specialized training and permits to work with. 

An AC inspection costs anywhere from $75 to $200, while a full HVAC system inspection that includes your furnace ranges from $200 to $450. While there's a cost to a home AC inspection, it can save you hundreds or thousands in the long run by catching problems, avoiding breaks, and saving you money on your utility bills.

No, for two very important reasons. First, it’s illegal to release refrigerant into the air or ground since it can be toxic and cause environmental damage. Technicians typically pump old or extra refrigerant into separate tanks for special disposal. Second, without professional equipment to read refrigerant pressure and levels, plus the AC’s suggested requirements, it’s impossible to know if you’ve removed the right amount of refrigerant. Stay away from a DIY solution here and seek an expert with the right tools.

The South Pasadena, 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.