1. Green Technology Systems

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Glendale, CA

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Green Technology Systems

4.5 (53 reviews)
Closed • 9:00 am - 3:00 pm

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Loading the Condenser unit up on to the roof.
Nicholas d.

Every time we, as homeowners, solicit bids from contractors, we unwittingly welcome in to our homes unscrupulous charlatans, along with companies dedicated to providing great service, at a fair price. Green Technology Systems is, in my experience, an admirable enterprise that falls squarely in the latter camp. Armen bid on the job, accompanied by his Little John sidekick, Saul (sp?). On the first day of work, three other workers arrived to begin demo: Mario, Sergio, and Majestic: all three professional, courteous, and thorough. During the next three days, the 5 men came and went, conscientiously replacing my whole HVAC system with a brand new configuration that I am confident will prove more efficient, sustainable, and effective than the reliable dinosaur that we had previously owned, and was long past its prime. The gentlemen cleaned up the house every day, and finished their installation with great care and application. When the duct testing company came, it was little surprise, therefore, that the readings were less than 4% leakage (an admirable score!). The city inspector was also impressed, and I was thrilled. Green Technology Systems backs up their work with a solid warranty, and provides a free maintenance checkup up in the first year. If this is how they do business regularly, I would not be surprised if this company grows steadily, and can only hope that Armen and his team never forget that their success is based upon the integrity, talent, and excellent service they demonstrated each day they worked in my home. This was neither the cheapest nor the most expensive bid we got, but I am - for now - pretty sure it was the best.

the bad weld job which caused freon to leak, that Green Technology Systems came out and repaired.

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9 years ago

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14 years ago

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Armen V.

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12 years ago

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Armen V.

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11 years ago

Excellent service!! Took the time to show me where repairs were needed and explain each in detail! Also, was able to use my GROUPON!

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Armen V.

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11 years ago

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Armen V.

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11 years ago

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Armen V.

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12 years ago

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Armen V.

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11 years ago

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Armen V.

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10 years ago

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14 years ago

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Armen V.

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12 years ago

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Armen V.

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12 years ago

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Armen V.

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11 years ago

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Armen V.

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Review Highlights - Green Technology Systems

“He and John immediately went to look for the part, driving all the way to Sylmar from Glendale to retrieve said item.”

Mentioned in 8 reviews

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If you're having any HVAC issues, definitely put Manny's HVAC on the top of your list to call…read more My AC stopped blowing cold air in this heatwave. Jerry diagnosed that it was a low capacitor and freon leak, and that the fan motor was not broken like others have said. Other companies needed me to purchase additional parts to get it fixed but Jerry was able to get my AC working the same day. My HVAC unit was nearing it's end of life so I was also comparing bids on what made the most sense for my condo. Jerry offered to temporarily 'lend' us a new capacitor and pumped freon into my system at no charge while I made the decision whether I wanted just the fix or to replace my system. If I decided to just go with the fix, I would pay for it of course, but if I went with replacing the system, they would just take back their capacitor and reclaim the freon. This was a hugely appreciated gesture. Their HVAC replacement proposal was also very competitive. I ultimately decided to replace the system. The experience was pleasant from beginning to end. Cecilia is the one who helps schedule at the office, very friendly and responsive. Jerry was the technician who helped us diagnose the issue and coordinate the HVAC team. He was friendly, transparent, and always responded quickly to my texts/questions - great communication. The day of, the workers Juan, Victor and Andrew were very professional. Maintained constant communication the whole time, kept me updated on the process and what they were doing. They wore booties inside, protected the floor with tarp, and were just very careful in general. The installation of the unit itself is very professionally done, and they vacuumed everything and cleaned up afterwards. They even explained how to register the units for warranties etc. They were able to remove the old AC and install the whole new system the same day, roughly ~5-6 hours including the crane to get the units on/off the roof of the condo building.

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Green Technology Systems - hvac - Updated October 2026

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