1. Rock

    1. Rock

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    Littleton, CO

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    Recommended Reviews - Rock

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    This is the mess we had Thomas come and diagnose.
    Sally F.

    We had a great experience with Thomas coming out to complete a diagnostic on our furnace! He was extremely knowledgeable, patient with our MILLIONS of questions, talked us thru options, etc. We were beating ourselves up about letting the furnace get to that point, and he actually made us feel a lot better and explained how some elements we had no way of knowing about/most homeowner's don't know about. He was also able to come out a full three days sooner than our appointment! We loved working with Thomas and Rock HVAC!!

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    2 months ago

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    1 month ago

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    3 years ago

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    4 years ago

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    2 years ago

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    Aimee S.

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    2 years ago

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    3 years ago

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    6 years ago

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    3 years ago

    Mark C came stat PDQ but i got the toy out cuz he couldnt get his hand in. We Danes connected. Good service!

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    3 years ago

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    4 years ago

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    4 years ago

    Very knowledgeable, Cory is polite with excellent communication skills. I have confidence in his company.

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    4 years ago

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    5 years ago

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    3 years ago

    Chris was knowledgeable, efficient and polite. He thoroughly explained things that should be completed in the future

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    4 years ago

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    Page 1 of 2

    Ask the Community - Rock

    Review Highlights - Rock

    Chris and team did a great job installing my garage heater.

    Mentioned in 5 reviews

    Read more highlights

    Hyper Flow Service - Completed water service replacement, ready for re-sod

    Hyper Flow Service

    (236 reviews)

    Southwest

    I really don't give bad reviews but this poor communication and poor job really harmed our timeline…read moreon our home sale. Absolutely avoid if you want an honest assessment or technician willing to work. I confirmed in advance that we wanted our sewer line cleaned to comply with our inspection during our home sale. The technician came out and said he was going to scope it first, not the service we asked for, and then told my husband repeatedly it didn't need to be cleaned. I later got an email with a recommendation for a cleaning at $1400 and a bill for $154 for scoping the line. I already have an appointment to have the line scoped after the cleaning tomorrow by the original company who scoped it. Never asked for a scope, asked for a cleaning. I've attached the communication that they could do the cleaning while in site. Really challenging when the technician said no cleaning necessary, no repairs necessary and then sends an estimate for recommended cleaning and repair. Moving on to the next company who can maybe do the work we hire for and not waste hours of our time and now days.

    Hyper Flow Service has been my trusted plumbers since 2021, for the past 4.5+ years. The owner,…read moreKyle, has also referred me to my equally trustworthy HVAC/Electrician, ArkEHC, and I couldn't be happier! I've worked with David, Jacob, Brian, and James, and can't speak more highly of all of them! They've all helped me in various ways, the past few years, during both emergencies and routine maintenance. It all started in Labor Day 2021, when I had just flown here from Arlington, VA (Washington, DC), to "hug my dad for surviving COVID," as he returned home from the hospital after starting at the VA, then being at a private hospital for 5-weeks, and he was scheduled to be discharged Labor Day weekend, just as his basement sewage plumbing backed up! I was so overwhelmed. I called 1.800 Water Mitigation, to remove all the HAZMAT, then get going on the dehumidifiers, fans, and worked with USAA to re-build the entire basement thereafter, and for the stopped-up toilet, I called Hyper Flow. James helped me snake the basement toilet, and begin to explain all of home plumbing to me. That was 4-years ago. Then I began hiring Hyper Flow to slowly rebuild two upstairs toilets that my dad had perhaps not maintained as well as ideal (he was on fixed income, after all, so no judgment), as well as the two upstairs bathroom sinks, then ultimately I hired them to replace the Kitchen Sink Faucet (James did this work, as Brian was the manager, who helped me assess the problem and do the estimate). James also helped me get my Water Heater (that a different company installed, that was no up-to-code) up to code, per the retroactive Home Inspection, and James helped me install a mainline water shutoff. My house is finally in ship-shape - on plumbing, electrical, and HVAC - all thanks to Kyle, the owner of Hyper Flow. Highly recommend! FYI, they've also jetted my lateral sewage line pipes - twice - and I will be hiring them for the excavation of the line that connects to my HOA main sewage line, before it connects to the City of Denver, once that time comes. Great work, great value, and - most of all - I trust them & their work.

    Summit Heating & AC - Summit Heating & AC, Denver CO

    Summit Heating & AC

    (453 reviews)

    I had a leak in my system from the condensation the heat pump creates and it was flooding the…read moreutility closet. Jason created a new drain system routing to fix the problem. He is very professional and competent. All of the service people I have interacted with at Summit are excellent.

    While the technicians themselves were friendly, my overall experience with Summit was disappointing…read more-- particularly given that they had been highly recommended by a neighbor. After the fourth visit and two failed inspections, I asked to speak with the owner. He said he'd show up on the final day and didn't. Not showing up after committing to do so speaks volumes. On multiple occasions, employees attempted to -- or did -- walk through my home beyond where work was being completed with their shoes on. This is a basic courtesy that should not have needed to be addressed. On the final day, an employee complained about the time spent waiting for the inspector to arrive. After five+ weeks of doing exactly that myself, I couldn't help but laugh internally. Most importantly, Summit advertises a "100% Right or 100% Free" guarantee on their website. These are not complicated words -- 100% means 100%, and free means free. There is no secondary meaning to either. When I raised this, I was told it essentially means they will keep trying until the job is done correctly -- which is admirable in theory, but falls well short of what "100% Free" implies when a customer has invested THOUSANDS of dollars. After reading the other reviews, I'm hoping the problem with my AC wasn't just a leak somewhere that could have been fixed for much less. I would strongly encourage potential customers to clarify what that guarantee truly means before signing a contract, and to get everything in writing.

    Rock - hvac - Updated September 2026

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