Lain CaulderTrustindex verifies that the original source of the review is Google. Can’t say enough about this company! Nicolas, the owner, came out and diagnosed my furnace system after I noticed it acting finicky. He spent over an hour conducting rigorous testing, explaining every piece of my system and how it works, and trying to find the best solution for our home. Unfortunately, the furnace was not able to be saved as it was damaged and an active fire hazard. Nicolas presented several options to me for purchasing a new furnace, explaining the pros and cons of each, and was honest with what my home did/didn’t need from a new system in terms of efficiency and power. Aether’s offerings were not just cheaper, they were at least 10k lower than the other quotes we’ve gotten from some of the big name HVAC competition in Denver! Not to mention their warranty coverage and included servicing was unmatched, and they went out of their way to find the most convenient payment options for us. It was an easy yes. All the necessary parts and the unit itself were in stock, so we were able to install the next morning. Laramie and Liam were prompt, kind, and got right to work. They even went above and beyond to clean out the central duct to the best of their ability, which had been clogged from years of deferred maintenance by the previous homeowners. They left the furnace area cleaner than they found it, and went through all the necessary details with me to make sure I didn’t have any remaining questions before leaving the home. Our home is warmer, cozier, and safer than it has ever been! We will definitely be calling them again. Lucianna LedezmaTrustindex verifies that the original source of the review is Google. Nicolas was amazing. He came out to give us an estimate within a couple hours of our call and beat 2 other estimates by more than 20%. He made sure our new furnace was up and running within 24 hours. His guys were quick, clean and efficient. Highly recommend his company. Jared DevineTrustindex verifies that the original source of the review is Google. Great experience! Very professional, transparent about the whole process, and offered competitive pricing. Dan JakeTrustindex verifies that the original source of the review is Google. Nico and crew were great installing our Navien boiler. So good in fact, that I had them do our gas furnace as well. Couldn't have been more professional. We've had no problems with either one and it's been 2 - 3 years. Nico explained the importance of regular maintenance, so we did it. No more worrying if something going to fail. We wouldn't call anyone else. Very fair/reasonable pricing...and honest - and more than than that cannot ask. Sandra OlivasTrustindex verifies that the original source of the review is Google. We were at a loss before finding Aether Mechanical! We had a combi boiler that was very loud, it sounded like it wanted to blow up, it never properly worked. We did not want to call the original installer, we were done spending good money on a bad situation. Fortunately, we found Aether Mechanical (a God send). On Wednesday, Dec 3rd, Nico and Louis came into our home. They looked at our Lochinvar boiler and told us immediately it was connected backwards. Turns out the entire boiler was bad due to poor installation. On Thursday, Dec 4th, Nico and his amazing team, put a new Navien combi boiler with all new parts and piping. They were extremely professional, clean, efficient, new combi boiler in one day!! This boiler is amazing!!! The house is warm, the hot water is hot, no loud noises, no low flame lock outs and the house is comfortable, quiet, and we feel very confident this new Navien system is what we needed. They also have interest free financing. This is the only company we would recommend for your Boiler, HVAC, and Furnace needs!! Thank you Aether Mechanical. So grateful we found you! You will never go wrong with Aether Mechanical, they are the best!! Brown’s HomeStyleDelightsTrustindex verifies that the original source of the review is Google. Aether mechanical did an Apartment complex heating system and water heater installation. They were very professional and thorough with their service. They explained everything in detail and provided photos of the work completed. We are pleased with their services and they come highly recommended. Christy ParkerTrustindex verifies that the original source of the review is Google. Our old boiler had been giving us trouble for months, and my husband kept saying we’d probably have to replace the whole thing. I decided to get a second opinion and called these guys and wow, am I glad I did. Their technician showed up on time, was super friendly, and immediately diagnosed the issue. Instead of pushing a costly replacement, they repaired the boiler quickly and saved us a ton of money. When my husband got home and saw everything working perfectly again, he couldn’t believe it. I told him it was all thanks to the new company I saw on Instagram. It’s such a relief to find a company that’s honest, skilled, and doesn’t take advantage of people. I’ll be recommending them to everyone I know. Thank you, Aether Mechanical, for the great service and for making me look like the hero of the house. Winston ChurchillTrustindex verifies that the original source of the review is Google. Absolutely Blown Away by Aether Mechanical! I recently used Aether Mechanical for the first time, and I’m honestly kicking myself for not calling them sooner! From start to finish, they were professional, punctual, and incredibly knowledgeable. They explained everything clearly and didn’t try to upsell me on anything I didn’t need, which is rare these days. Their prices were more than fair, especially considering the level of service and care they provide. You can tell they genuinely take pride in their work and want their customers to feel taken care of. My system is running better than ever, and I finally feel confident that I’ve found a company I can rely on for years to come. If you’re looking for an honest, affordable, and dependable HVAC company in Denver, Aether Mechanical is the real deal. I can’t recommend them enough! Jake SalazarTrustindex verifies that the original source of the review is Google. I can’t say enough good things about Aether Mechanical here in Denver. A few years ago, they literally saved my family’s life by discovering and fixing a dangerous carbon monoxide leak in our home. Their professionalism, attention to detail, and genuine care for our safety left a lasting impression. Since that day, Aether Mechanical has been the only company we trust to work on our home. For the past three years, their team has handled everything with honesty, expertise, and top-notch service. It’s rare to find a company that truly cares about their customers like this one does. If you want reliable, trustworthy, and skilled HVAC professionals who treat you like family — look no further than Aether Mechanical. They’ve earned our complete trust and deepest gratitude. Andrea BlumTrustindex verifies that the original source of the review is Google. I’m going to be objective about this and you can make your own decision. We need a new boiler within the next 5 years. We decided to start looking into engineering companies to explore our options. Nicolas arrived timely and within short notice. He seemed so knowledgeable, and I was impressed. Despite trusting our current company, we decided to try out Aether to see what we thought of them for our boiler replacement by turning on our boilers this season. They were more affordable and Nicolas is a reported engineer although you cannot find him as a licensed engineer in DORA. Other engineers we have explored are licensed in DORA. We have two boilers. After arriving to work on our boilers with another guy, Nicolas called me and showed me the boiler lighting up more than it should on startup bc of a gas problem. He immediately said we needed a new boiler. A new boiler for us costs between 57k to 70k based on Nicolas’ 3 estimates. This actually seems correct compared to prior data we have. What concerned me is such an immediate conclusion of needing a whole new boiler. Our boiler was fine at shut down in May. I suggested why not replace the gas regulator and see if that would work. Seems reasonable if too much gas is coming out. Nicolas then said that it would be possible to look into. I left. Struck me as odd that I had to suggest that. Maybe an hour later he contacted me and said that he tested the gas pressure on the regulator unit or whatever and the pressure was correct. The only thing it could be was a crack in one of the burners, necessitating a new boiler. He put a red tag on it, shut it down, and said this was a very unsafe situation. He also went and turned on our other boiler. Again, another call. Our reset button on the low water cut off was broken and we needed to replace the part. Also, something was wonky with the electrical wires so they fixed that, but we needed to do something with that too. He also alleged that our last company must have cut this wire thing with the other cut off part that he quickly found lying on the side of the boiler. He said there was no way that our boiler could operate with that. It had to be the last boiler company. He pointed out the clear cut the company must have made in the component. More money. Two days later, our original, trusted boiler company came out for a second opinion. They reattached the “cut part” that was removed from where it should have been. They did several other things. Boiler is up and running. He pulled out all the burners. No cracks. Fixed for around 1k vs 57-70k! Also, having used our original boiler company for last year’s turn on and shut off as well as repairs, they are quite familiar with our boilers. I had them look at the low water cut off. They reported it has been rewired, causing it to bypass the cut off. They fixed the wiring, and it is suddenly working, again! This was the low water cut off is for SAFETY by the way. No replacement needed. I wonder what Aether was doing with the wires. Would you? We were supposed to have a meeting with Nicolas the next day, as it’s October and we need heat. I sent him a very objective email about how our boiler was fixed and the wires were bypassed. I shared a nice video of our beautifully burning boiler that was fixed and safe. I cancelled our meeting. He texted and called me the same day. I ignored it. This is factual, objective information. You make your own inferences given this information. I don’t know how you can rationalize this any other way than what is clear here. Everyone is safe and cozy tonight with heat is still in the building with the supposedly irreparably “broken” boiler. First video…a video Nicolas sent of our “broken” and “unsafe” boiler needing replacement. You can clearly hear his voice in the background towards the end. Enjoy the whole video! Second video two days later…looks like a safe burning boiler to me!
We are committed to providing exceptional HVAC services that stand out from the rest. Our experienced team offers fast, reliable, and affordable solutions for all your needs.

























Very old systems or units with frequent repairs may be more cost-effective to replace than continually fixing them.
The average HVAC installation takes 1 to 3 days, depending on the system’s size and complexity. Aether Mechanical performs efficient and safe installations, ensuring your system works correctly from day one.
Very old systems or units with frequent repairs may be more cost-effective to replace than continually fixing them.
The average HVAC installation takes 1 to 3 days, depending on the system’s size and complexity. Aether Mechanical performs efficient and safe installations, ensuring your system works correctly from day one.
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