Mannix Heating & Cooling

We've had Mannix do check-ups on our HVAC for the past year, in addition to a gas regulator replacement. Both their technicians and their office staff are courteous and competent. They do a great job of explaining what they're doing and go the extra mile to make sure things are working like they should. We feel very well taken care of.

I chose Mannix over few other contractors because my sister who replaced the HVAC including water heater two years ago told me how the Mannix did excellent job on her house. They didn’t disappointment me. I was in emergency situation on the day of work which I could not stay home all day to communicate with the crew but final outcome of the work is excellent. I got a very reasonable quote and the whole crews were polite and the customer services also were very nice. I didn’t instruct them to fix the cold basement which I didn’t know it was a problem is now warm and comfortable. I had a miscommunication on one issue but they came and resolved it more than I expected.

Relying on Angie's List reviews, we chose Mannix to come to our home and perform the work. We had to wait over a month to get an appointment for a tune up on our older AC unit. The unit was working perfectly all summer long before Mannix arrived on a very hot July day. The young tech arrived on time and was professional, however when he saw our unit he seemed confused and nervous. Before he started working we told him we were thinking about replacing the system in the next year and wanted to get a quote for that as well. He said he would set up a sales appointment and have someone contact us. While working on the unit we spilled coolant or some type of fluid, and then said we needed to put more in which would cost us several hundreds of dollars. Later that evening when we were getting ready for bed we noticed that the house had heated up substantially and adjusted it down more. We woke up in the middle of the night and realized the house never cooled, and was now sitting at 85 degrees while blowing hot air. I was on maternity leave and ran to my newborn baby, whom I had in a sleep sack, worried he overheated since newborns cannot sweat. He was incredibly hot and lethargic. I immediately called the emergency line of Mannix and was told that if they came out and the unit wasn't working because it was our fault, we would be charged a large fee because it's after hours, so I left a very teary voicemail with management about what was going on. The rest of the night was miserable. I called Mannix first thing in the morning crying about the experience we went through all night and she said she would get someone to us immediately. No one came until late in the afternoon, but they were sure able to get their sales team to our house first thing in the morning. Since the representative broke our system the sales team offered me a 10% discount on a new system (yes, you read that right!) for the "inconvenience" of sleeping and living in a home close to 90 degrees with a newborn. A new tech came out later that afternoon, assessed the situation, and in more or less words said the guy that came out earlier, which he said was a newer, younger tech, should have never done what he did to our system because of the age, and broke it. No one from Mannix followed up with me to see how things were going or apologized to me. Their inexperienced employee broke our unit, then they tried to sell me on a new one through them with a bonus 10% discount for my troubles, and I had to live in a 90 degree home with a baby that was only a few weeks old for an entire week until I could get another company to come out and install a new unit, setting me back close to $6,000. They also never refunded me the tune up fee which adds insult to injury. DO NOT USE THIS COMPANY. They lack the proper training and customer service when they make mistakes.

They were onsite in a couple of hours and issue was fixed in another hour. Minimal cost. Great service!

Good diagnostic on old dehumidifier by tech, when signal of failure did not show on warning light even though compressor had failed. Helpful discussion of rerouting planned replacement to have intake only in basement rather than throughout house, since basement only was the problem. A little confusion with office, which did not call me as tech indicated it would about written estimate tech left me for purchase and installation of new unit--I had to contact office after not hearing for almost 2 days. A little confusion in office after I indicated which unit I wanted and affirmed order, when I had to call again to follow up on when unit would be available and when I could get it installed; they may have 2 office folks in different offices who don't communicate efficiently sometimes. But once that was straightened out, I was given first available appointment next working day, techs were able to come even earlier than appointment time, and installation was done well. Unit works great. Used 5% senior discount. I would use again, bearing in mind I might need to push again if I again needed something on a fairly urgent basis.

Excellent. Mannix was quick to supply a quote and complete the job. We will definitely hire them again. They were a pleasure to work with.

Good afternoon, I contacted three HVAC businesses in the Oakton area after our 1st floor Carrier home air conditioning system went out. I selected the three vendors based on Angie's list and additional reviews and personal long term experience with one of them. Mannix was one of the three. Hal is the sales person who came to our home. He arrived on his scheduled time, called ahead to let us know he was enroute and was a professional and personable representative for Mannix throughout the visit and subsequent discussions. The online evaluations for Mannix are first rate and Hal, if anything, added to that reputation. He was knowledgeable, pleasant, informative and provided all the technical information needed to make an informed decision. His estimate was timely and professional. In this case, our decision was complicated by the competence and professionalism of all three businesses I dealt with and none provided any negative discriminators. Hal worked with us to make his price the most competitive during this snapshot in time. We contracted with Mannix and Matt D and Marcellino completed the installation. Both were outstanding. Again they arrived on time and called ahead. The installation was expeditious and flawless, Matt explained the Greenspeed technology in depth, assisted with the set-up and helped register the product. The unit operated as advertised from the outset and no issues have arisen. After the work was completed Hal checked in to be sure we were fully satisfied. Our experience with Mannix embodies what we would hope to get from an 'A' rated Angie's list business and they have our highest recommendation. We will continue to do business with Mannix in the future. Respectfully submitted. TDS

Mannix was responsive, did a fine job with the servicing. Only problem was that the AC issue returned a few days later and owner did not want to pay another service charge.

Perfect 2 hrs took away old unit cleaned up and gone.

I cannot recommend Mannix highly enough. We had a 20+ year old HVAC system, a water heater that was even older, and an electric panel from the original construction in the late 1960s. The HVAC had failed a couple of times in recent months - among other issues, the system was overheating - causing either the fuses to blow or melting the wire insulation in the unit. After the last repair attempt (a company different from Mannix), the technician said he could not recommend our turning the system back on - and would note the same in the repair report he would submit to his company. So, I could no longer put-off replacing the HVAC. I had five different companies come to the house, do an assessment, and provide a quote. Without prompting they all made the same recommendations (replace the HVAC and electric panel). Several suggested replacing the water heater as it was likely to fail in the not distant future and they could offer a discount if all the work was bundled. I narrowed my decision down to Mannix and one other vendor. Both had solid online reputations (Angie's List, Yelp, etc), but what decided it for me was the combination of Mannix's responsiveness and willingness to strike a deal that was equitable for both of us. I had many questions and Jerry was not only very quick to respond, but was detailed and professional in his answers. And when the crew completed all of their work, he came to the house personally to inspect the work and ensure that I was satisfied with all the work (which I absolutely was). The crew that did all the work was very professional and kept me informed of their progress and made sure to ask questions to confirm what I did/didn't want. They were very careful in removing the old equipment and installing the new - ensuring there was no damage to the house or the back yard. I don't think I could have asked for a better experience - I recommend Mannix, without reservation, to anyone.

This was the second time I used Mannix, and it was another very good experience. They came out, did a thorough look around, and gave me a competitive estimate. They were easy to schedule with and go the job done quickly.

Extremely well. Mannix’s rep was punctual, professional and efficient.

Great! They gave us a fantastic price and installed it quickly, which was important at the time because we were in the middle of a heat wave.

Let me just start off by how great the customer service was and the cost was very reasonable. I did not get the impression that they were trying to rip me off like their competitors, and Mannix really knew what they were doing. Keith the service technician came by to assess the situation and was very prompt. He went above and beyond to diagnose the problem. Jerry called me shortly afterwards to inform me exactly why my furnace was leaking water and how it was installed incorrectly in the first place. He was kind enough to compose an e-mail with all the details so I would easily understand what was going on. Jerry promptly scheduled his technicians to come out just two days afterwards. His technicians were prompt and arrived just as scheduled. Not only did they provide excellent service, but they were extremely courteous. They took off their shoes before the entered the house and took the necessary precautions as to not track dirt onto the floors. The technicians made sure everything was installed properly as well as walked me through how to set up my new thermostat. Mannix clearly showed they cared and were sympathetic towards my situation. I HIGHLY recommend them and will definitely be using them in the future.

Mannix responded promptly to all inquiries and requests from the outset. They gave us a significantly better estimate than competitors for comparable equipment. The work was done as promised with efficiency and courtesy. We are extremely happy with our new equipment. This is a first-class company you can trust.

First let me preface by saying these guys are AMAZING. I called Mannix on a Friday afternoon because I received a call from my tenant that the house was not heating above 66 degrees. They had a technician at the house only a few hours later to inspect. This was a very cold day were temperatures were far below freezing so for them to make it out to the house in a non emergency scenario on a Friday afternoon during what was certainly a busy time period for them was impressive. The technician found that my 30 year old heat pump was beyond repair and needed to be replaced. These things typically last no more than 20 years so we were on borrowed time. They had an estimator (Hal) in the next morning (Saturday). Around noon he called me and talked through the options for a replacement heat pump system and explained that he would send me an estimate in an hour. As promised I received the estimate via email. The estimate was very thorough and easy to understand. I did have one question which Hal was able to answer with a quick phone call. Very easy process for committing to the work which in about one hour later was scheduled for Wednesday. Early Monday morning I received word from my tenant that the heat stopped working entirely. Current outdoor temperature was in the teens. I called Hal at 8AM and explained the situation. He was able to re-arrange some scheduling and had a crew at the house at 9:30 the same day! I swung by the house later that afternoon to get a walk through of the new install. Matt (installer) gave me a very thorough walk through and Hal made a special trip out to make sure everything was good. I also received 0 percent financing for three years that took me literally 5 minutes to apply and receive confirmation. I couldn't be more happy with the service from Mannix, especially Hal and Matt.

All I will say is my experience is much like the other "F" ratings. I wrote this having the work done years ago because I was looking for a professional to replace my HVAC humidifier and saw Mannix. I was thinking I would give others fair warning.

The tech was on time and prepared. He was knowledgable about gas furnaces and recommended maintenance. I was really happy with the professionalism and friendliness. Of course I was happy to have the furnace back up and running in about an hour.

The price was reasonable and the workers who installed the equipment were very courteous and appeared to be very competent.

We used Mannix for two service calls, one routine maintenance and the other a hose leak. The repairmen who came out were courteous and patient with my questions, as I'm from the north and never had central air before. The admin was polite and diligent, and he rates were reasonable. They don't generally work with my brand of system so I did switch companies, but if you have a Trane system, I wouldn't hesitate to use them.

Their bids were competitive, the salesman was very responsive/pleasant to deal with, and all of the men who came to install equipment were very polite and very knowledgeable. I can’t emphasize enough how pleased I am with the work that Mannix HVAC did for me. All my questions were patiently answered, they honored my request to place the new humidifier at a level low enough for me to reach without a ladder, and they even registered all the new equipment for me. Mannix HVAC was very organized, and very professional from the beginning to the end of the process. Another thing I should note is that because they are a factory authorized dealer of Carrier products, I received some factory rebates which saved me a lot of money!

They did an excellent job. They were kind, courteous, and efficient. They ran into a problem, but they did not leave until it was resolved.

Mannix Heating and Cooling recently installed a gas line for us (from our basement to the first floor kitchen) for our soon to be newly installed gas range top. The workers were clean and polite and waited in front of our home at 7:15 a.m. for their 8:00 a.m. appointment. They finished the job and showed the entire work to me. What is the greatest thing about this company, is that they are reputable, and they are less than 1/2 the price of Cardinal Gas.

As every homeowner knows, even the best of intentions sometimes get thrown to the wayside. I'm pretty good about upkeep and was planning on replacing my heat pump this coming fall, during the in-between season where it's cool enough that you don't need the AC but not so cold as to need the heat. Well, my heat pump had different ideas and, despite twice-yearly maintenance visits, it decided to call it quits... on what, looking back, ended up being the hottest day of the summer. I did my usual cross-check betwen the Washington Consumer Checkbook, Angie's List, and Yelp, and the choice was clear -- Mannix to the rescue! Despite being peak time for service calls, I had a tech (Keith) at my house the next morning and, when it became obvious that the heat pump needed to be replaced, his colleague Steve stopped by later that afternoon to discuss options. Once I picked out the new heat pump (a Carrier with great energy efficiency), I signed the contract, and the crew - two great guys named Richard and Charles - were here THE NEXT MORNING to do the install. It was less than 48 hours from the time of my initial call to the time Richard and Charles pulled away, my home quickly cooling down and becoming habitable again. I'm still flabbergasted by how quickly everything fell into place, especially at the absolute worst time during the summer when demand for top-quality talent is high. At every step, everything was clearly explained to me, my options laid-out so I could make an intelligent decision with no pressure, and everyone I dealt with couldn't have been more friendly or courteous. There were also things in the 'going the extra mile' category, like Richard and Charles leveling out the ground and putting a new fiberglass stand in place, providing really good support for the new heat pump, as well as making sure my Nest thermostat was connected properly. Richard and Charles were also very mindful to keep everything inside the house clean and tidy, and you'd barely know they were here once everything was all said and done. When folks take care of your home like it's theirs, then you know you've found a great company to work with. I've already recommended them to several folks in my neighborhood, confident that they'll have an equally good experience. Oh, by the way, that new Carrier is working like gangbusters, and my energy usage actually went down by one-third between July and August. Eco-friendly! So, Keith, Steve, Richard, and Charles -- thanks again for coming to the rescue on the hottest day of the year. I can't thank you enough!

Fine but, in disconnecting and later reconnecting my water heater one of the "inside" electrical connections wasn't reconnected (or perhaps was disconnected inadvertently). A technician did come the next evening and correct the problem. Also, while I feel the technicians that did the install were generally very careful and professional, I believe - among a few other minor dings, etc. in the house - they scratched my washing machine in a couple places. With moving large/heavy items through a house, I understand that things are going to happen, but I mention the washing machine as I wouldn't think that something like that could have been avoided.