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"ASM is about customer service, honesty, efficiency and no nonsense. Our results speak for themselves."

Regular Hours
Mon - Sun:
All major brands.
We service Santa Clarita and surrounding areas including Los Angeles and the San Fernando Valley. We are also happy to travel outside our service area on a case by case basis.
All Systems Mechanical is proud to hire US veterans to the maximum extent possible and offers a discount to active duty military, veterans, police and fire fighters. We also offer free on-site quotes.
English, German
CSLB -California HVAC License No. 963922

ASM Air Conditioning

Air Conditioning Contractors & Systems, Air Conditioning Service & Repair, Heating Contractors & Specialties, Mechanical Contractors


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Sheri D.



Their article about fans vs ac literally answered every question I had in my over-analytical brain! The facts/equations/example scenarios were fantastic. They REALLY know their stuff.
If you have ever had questions about ceiling fans and ac savings- you have GOT to read this.

O. k. U.



Have called only to get a voice recording that they will call you a veteran also, i would like to give them my business but they will not call back...Said call back usually the same day......well I called on Saturday and left message at Monday, I have called several times starting at0751, 0757, 0841, 1003, 1004, 1228 and 1308, only to get a voice mail is now, 1825 on Monday and have still not heard a much for returning your call as soon as possible within the same day.....why can't have someone there to answer thing though, they have great website with tons of just cannot talk to them about it...I guess I may have to take my business some place else if this is the way they conduct business..I really want to give vets business but I expect people to have the courtesy to call back when they say they will.....hard to believe they have not checked the voice mail

Bryan W.



Excellent Service!! Excellent People!! My family have used All Systems Mechanical for our personal residence and for other properties over the years. Mike, and his team is nothing less than the professional company and provides superior service. When we call for service, we can expect and technician to be there the same day or within 24 hours. The technicians are extremely knowledgeable in HVAC and can diagnose and give you a accurate price quote(that is reasonable) before leaving. I have referred Mike and his team to friends, family, and business colleagues. When you call them you can expect five star service from the moment they answer the phone. I would highly recommend this company for ALL your HVAC needs.

Dan A.



I contacted Mike at All Systems Mechanical for our AC upgrade.

Knowing his past work for high end auto dealers (with 40+ ton systems) and that he is not a "discount technician" I frankly did not think he would be in our budget.

Not only was his price very competitive, but he brought much more value to the job than the other AC contractors who quoted the job - i.e. a high end HEPA filter that did not restrict airflow, custom baffling to reduce the noise from a larger system, to little details like adding a vent to our walk in closet and duct placement to cool the rooms the most efficiently.

Everything was done on time and within budget, no surprises and we are extremely satisfied.

Highly highly recommend.

Shauna P.



I was very happy with ASM. They were all very clean, well spoken young gentlemen and they got the job done so quickly and exactly when they said they would. The owner gave me his cell number in case there were any problems and they even called me a month later to ask how our system was running. Very happy!

G f K.



After dealing with countless AC companies to bid on installation of new AC and duct work, I chose ASM. Best decision I ever made. They did a complete analysis of the house and made several suggestions. On time, efficient and professional are just a few of the terms I would use to describe

ASM. And, oh yes, the system and the entire house has the feel of a brand new home. Well done and would recommend them highly

Steph H.



When it finally became obvious that I was going to have to bite the bullet and get a new A/C system, I did some research and came across this company. I called and spoke to an owner and ended up hiring them. When they showed up, they were on time (none of that stupid "we'll be there between 8 and noon stuff), professional, and clean (they even wore these little bootie things into my house!). They even installed this great filter thing that has almost completely eliminated the issues I was having with my allergies and asthma! I didnt even know that was possible! So happy to have stumbled across these guys.

Dillon M.



Very happy with the service I got from these guys and the system is running great. Went out of their way for us and the experience was hassle free, which is so refreshing! Would recommend them to anyone!

Dana M.



Last week I had a huge problem with my system and after spending 2 days trying to fix it myself, I decided it was time to give the guys at ASM a call. Good thing I did too, because they were able to take care of it in no time. What a relief! I guess it does pay off to call in for help sometimes. Not only did they fix the system, but they also gave me a great deal! You won't find that kind of luck with any other company around here.

Nikki M.



When my husband and I needed some work done on our air conditioning system, a friend told us about ASM. At first I was skeptical because, I've used other companies in the past that didn't do a great job. But the ASM service providers were professional, accommodating, and punctual! They were also extreme friendly and did a fantastic job. I'm so grateful for our friends recommendation and I would highly encourage any one else to use their services as well.

Blake M.



Great customer service. I even had to reschedule with only a days notice and they told me "No problem, we are here for you. When is a better time?" When they showed up, they were on time, wore little booties to cover their feet in the house, and always called me "Sir," which kind of made me feel old. I was astounded by their professionalism and workmanship. Plus, the Honeywell thermostat that I got was a lemon...they came out first thing in the morning and replaced it no questions asked. I'd give them six stars if I could. Great service.

Michelle T.



Totally satisfied and more. We hired these guys through the friend of a friend because my husband is former military and they treated us like royalty! There was none of the usual run around you get from contractors and they gave us a hefty military discount. Great company.

Haley M.



Got the job done so well. My husband and I both travel quite a bit for our work, but they showed up when we needed them to and still finished up on time. They called us a couple weeks later to make sure our system was running well and sent a hand written thank-you note from the owner. Unreal!

Becky M.



I am so very happy with my air conditioning system. The guys from ASM were so friendly and got the job done a lot quicker than I expected. They even gave us a discount because my husband is a firefighter. Great service.

Shannon L.


Had a very pleasant experience...

Had a very pleasant experience and appreciated the extra time and effort they gave my company. They came after hours to investigate an AC problem and had it diagnosed and the replacement part ordered within 45 minutes. Surpassed my expectations and will be using them in the's refreshing to see an old-school business these days.



Couldn't be happier

Love our new system and it is nice to see a company that takes care of it's customers. We got a 3-ton for our house and it runs so quietly we thought it was broken for the first few days we had it. Runs great, and asm has a really neat idea for a company.