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    RETKNO Consulting

    5.0 (2 reviews)
    Open 9:00 am - 5:00 pm

    Services - RETKNO Consulting

    Building energy audit

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    3 years ago

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    2 years ago

    Great service and quality materials. Very knowledgeable and easy to work with. Will tell all my friends

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    Around the Clock Heating and Air Conditioning - Factory Trained Residential Air Conditioning PROS Call 818 506-4400.

    Around the Clock Heating and Air Conditioning

    (719 reviews)

    Valley Glen

    This was my first time using their services but when I needed a new central HVAC for my home, I…read morewent through Costco and Around the Clock is their current subcontractor. Michael handled all the business and clearly explained to me in my home what equipment options were available (all Lennox via Costco) and what payment options and benefits were available to Costco members. I took a few different estimates from other companies and although I found comparable equipment and installations that might have priced out cheaper than Around the Clock, the benefits received from Costco for CostcoCash along with direct cash refunds made them very appealing. Michael is very patient in the process of answering any and all questions regarding the equipment, installation, etc. The installation was smooth and painless. The team of two installers were polite and professional. They worked clean which is greatly appreciated. The installation took about a day and a half. End result: I'm very satisfied with my experience with Around the Clock. A very professional installation with great customer service. The new system has completely transformed the comfort level of my home. It's already been battle tested in this SGV summer and I couldn't be happier. If you're on the fence in deciding whether or not Around the Clock is a vendor you'd like to use, I whole heartedly recommend them.

    Avoid this company if you value honest diagnostics, fair pricing, and proper warranty support…read more *Paid $190 in Diagnostic Fees: Charged two separate $95 fees for the exact same intermittent blower motor issue (Invoices #106315050 and #106653607). The first tech found "no issues" and left. *Inflated $2,401 Quote: On visit #2, they finally confirmed the failing ECM motor and quoted $2,401.20 out of pocket, claiming it was out of warranty. *Active 10-Year Warranty Ignored: I called the manufacturer (Carrier/Day & Night) directly and verified the unit is under an active 10-year Enhanced Parts Warranty ($0 OEM part cost at the counter). *Refused Warranty Exchange: After I provided the official Carrier registration confirmation number, they admitted they aren't an authorized Carrier dealer and insisted I pay the entire $2,401 upfront and wait on a potential $1,151 reimbursement. Even with their math, they were charging over $1,250 in pure labor for a 2-hour swap.

    Cold Cloud Mechanical - Reliable commercial AC installation & repairs for optimal facility cooling.

    Cold Cloud Mechanical

    (269 reviews)

    I called Cold Cloud Mechanical today based on their excellent Yelp rating for two issues: a…read moresuspected freon leak in my living room mini split, and water leaking from my son's bedroom unit after about 20 minutes of use. Technician Arsen handled the bedroom unit well. He found the drain hose was clogged and mounted too low, cleaned it out, adjusted the mounting height, and confirmed it drained properly over a 2-hour test. The living room unit is where I'm disappointed. A technician from my home warranty company had already confirmed the unit, less than a year old, was completely empty of freon. Arsen couldn't initially find the leak and charged me to vacuum and recharge the system, with no warranty since the source was unconfirmed. During that process, he found the actual leak in a copper line under the house. Once identified, he refused to go into the crawl space to fix it and said no one else at the company could either. That doesn't add up: just months ago, five workers from another company spent a full week under the house for a seismic retrofit, moving freely through the entire crawl space without issue, including the area where this leak is now located. I offered to pay extra for him or anyone else to complete the repair and was still turned down. Instead, he recommended replacing the entire unit for $5,000, which doesn't make sense for a nearly-new system with one identified leak point. I'm now out the cost of a recharge that didn't fix anything and came with no warranty, and I still have to find another company willing to go under the house and finish the repair Arsen already diagnosed. I appreciate the diagnostic work, but a company that installs mini splits should have someone who can access a crawl space to tighten a fitting. Choosing an upsell over a specific, identified fix is why I can't rate this higher. Update: The owner, Alex B., responded to this review quickly and personally came out to fix the leak. He accessed the crawl space without any issue, repaired the fitting in a few minutes, vacuumed and recharged the system, and tested it to confirm stable freon levels and cold air output. It's a straightforward fix, which makes it more frustrating it wasn't handled this way from the start, but I appreciate the owner stepping in directly to make it right. Updating to 5 stars for the responsiveness and quality of the resolution.

    Fixed the issues but not the smoothest experience and prices felt very high. I guess it's normal to…read moremark up prices but when you know how much these AC parts cost the prices feel kind of crazy. Ended up paying $1,300 to replace a transformer, capacitor and fuse and to hose the outside unit down with water. Also wanted to charge almost $500 to "chemical wash" the unit, which is something I know you can do yourself pretty easily. I know most places charge the same but it all feels so much like a scam when these parts are all no more than $40-$50 each max. When booking I also go left on read when messaging via Yelp and had to call 2 hours later for them to actually book and send a confirmation. Then they said the tech would text 30 minutes before arrival and they did not, and when I told them I was expecting a text heads up they said they "didn't receive these instructions".

    Manny's Heating & Air Conditioning

    Manny's Heating & Air Conditioning

    (839 reviews)

    Chinatown

    My HVAC wasn't completely dead -- it would run anywhere from 5 minutes to a few hours, shut itself…read moreoff, then restart again. It was a complicated intermittent issue. I contacted Manny's Heating & Air Conditioning, and they were very responsive. Jerry from Manny's Heating & Air Conditioning was very professional and knowledgeable who diagnosed the problem within about 15 minutes, explained the repair clearly, asked for permission before performing each step, and verified the temperature and operation afterward. One important detail: my HVAC is a rooftop packaged unit with indoor access only through a master bedroom walk in closet. There are no building stairs to the roof, so the technician must bring a ladder and climb about 11 feet indoors. This unusual setup made it difficult for me to find a company willing to handle the access, but Manny's was able to take care of it without any issues. It has been 10 days since the repair, and the air conditioner is running normally again. The repair came with a standard 90 day warranty, but honestly the quality of the work mattered more to me than the warranty. I recommend this company.

    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.

    LA Duct Cleaning

    LA Duct Cleaning

    (836 reviews)

    North Hollywood

    I had a great experience with David! My dryer duct was extremely clogged, and he quickly…read moreidentified the problem and got everything cleaned out thoroughly. He was professional, knowledgeable, and took the time to explain what was causing the issue and how he fixed it. His pricing was very fair, especially considering the quality of the work and the peace of mind it provided. The whole process was smooth, and it's a huge relief knowing my dryer is running safely and efficiently again. I really appreciate David's expertise, great service, and honest pricing. I highly recommend him and LA Duct Cleaning to anyone who needs their dryer vent or duct cleaned!

    I recently hired LA Duct Cleaning and had a great experience from start to finish. My wife and I…read morerecently purchased our fixer upper home and quickly realized the HVAC system was in desperate need of a deep clean. There was a significant amount of debris built up within the ducts and vents, so we wanted to get it handled properly before settling in. The two technicians who arrived were punctual and highly professional throughout the process. They did a thorough job cleaning out every vent and duct related to the system, leaving everything much cleaner than they found it. I also want to give a special thanks to Jose for his help in coordinating the service and making sure the job got done smoothly. If you are looking for reliable and professional HVAC cleaning, I highly recommend this team!

    RETKNO Consulting - homeenergyauditors - Updated September 2026

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