The HVAC system in my home is an evolutionary one. As a result, some rooms are cold when others are warm. I needed the airflow balanced in the system so all the rooms were the same temperature. After calling my current HVAC company and finding out they couldn't help me, I started looking. Turns out not many do this. Fortunately for me, Legacy One Heating does. After talking with Karl and having him look at the system, he came up with a plan to resolve this. I scheduled an appointment, and two very professional and caring men came out to fix the problem I was having. Collin and Brian are excellent! We talked about what they were going to do and how they would balance everything. They listened to my thoughts about labeling corresponding components, and went to work. After they made the changes to the ducts, they went around and balanced the airflow coming out of each one so that the airflow evenly covers the whole house. It's a tri-level, so that's three floors with ducting. Lots to consider when balancing the system. I have to say that I am thrilled with how well the system is now working! I no longer need to wear a sweatshirt when I go into my office to work. It's not cold anymore! In fact, there are no longer any cold spots in the house. Just even temperatures throughout. Needless to say, Legacy One is now my HVAC partner. They do everything around a furnace. They are interested in what I have to say, and they are true professionals. Collin and Brian, thank you for what you did for me! This is a huge improvement! read more

Casey with Legacy One recently helped repair our AC. Experience could not have been better. Casey identified the problems right away, provided a helpful explanation of what was wrong, and the repair was quick. So grateful for the expert help. It's going to be a hot summer! read more

They did a fantastic job. Orlando and Kameron were professional, funny, and just great guys. They did an excellent job on the install. The company overall has been a pleasure to work with and was priced very fairly and much lower than some of the competitors. I would definitely use them again. read more

Reached out through Yelp looking for routine maintenance on our 2-year-old ductless mini-split system. They gave me a good quote and I gave then the job. I then asked if they could also quote me on routine maintenance for our furnace. They could have easily charged me for an added service, but told me they had a fall special for doing both jobs together that was $30 less than what they had quoted me for just the HVAC work! Says a lot about them, I think. Of course, it's the actual work that matters most. My service tech, Matt, called enroute and gave me an accurate time of arrival. He was very professional and even showed how to do periodic cleaning. He found a leak in our furnace that needed a small repair. He did the repair with no additional charge. This company is great. I've already put them in my calendar for next year's routine maintenance and I would definitely call them if I had any other issue before then. read more

We recently had heat pump installed by Legacy One in our condominium unit. It was complicated as our brick and concrete building was built in the 1970s. The crew of Legacy One provided excellent professional service. They communicated well with me and my husband every step of the way as each step of the project unfolded with some necessary adjustments. Their team manager, Collin Qualkenbush, was great to deal with--respectful and professional. They also cleaned up each day while they were working in our unit. Their price for their service was reasonable--definitely not as expensive as other providers in the Seattle metro area. We highly recommend Legacy One for heating and air service! read more

Incredibly fast response, which you might appreciate in an emergency (I'm not). However they charges $275 just to come out and that cost does NOT apply to the cost of the repair. Ended up going with another outfit with all 5 star yelp reviews, who can come out earlier, and only a $70 fee that does apply to the cost of repair. read more

Very professional company that went above and beyond their competitors! I contacted 5-6 HVAC companies looking to work with a reimbursement process via our home warrantor. Legacy One was the only company that was willing to work with us, which required an additional phone call to our warrantor to obtain an authorization code. The techs were very punctual, professional, and communicative. In sum, we are quite pleased with them and will be returning again next year! read more

I called Legacy One for annual HVAC maintenance and for assistance with a gas grill. The service technician Casey was timely, solved my problems and, for the gas grill, fixed it and explained the steps I should take should the problem arise again. This was my second time using their maintenance service and couldn't be happier. Completely recommend. read more

Kevin, Makana, and Collin were extremely professional, polite, and did fantastic work installing a new AC system in our house today. Awesome work, thank you! read more

Legacy One and everyone that works there rocks! I had a 30 year old furnace and heat pump that worked but was clearly on borrowed time. I had 3 companies come and bid the job. Karl, the owner, actually came out to bid it which I thought was awesome and showed they are a small, family owned business. I had several questions as this was a big investment and there is no shortage of options or companies to do the work. He responded to each of my questions via email every day and within a couple of hours. The "other guy" did not which cost them the job. Legacy One was not only the most responsive but was also the most competitively priced. The guys that came out did the entire job in one day which included hauling away the old equipment. They were amazing and explained everything they were doing and how everything worked. Fast forward a week later, they sent me a thank you present in addition to a hand written card with the warranty information included inside. Customer service like this is hard to find but if you're looking for a no hassle, easy install or replacement HVAC system, look no further. read more

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Very professional and we had good experience with legacy one heating. The issue was diagnosed quickly and the fix is effective

Legacy One Heating installed our heat pump several years ago. During installation, they identified a MUCH better location than we'd originally thought possible for the outdoor unit (including a simple tweak that would make it possible) and we ended up with a much better backyard layout as a result. We've also called them out for (minor) service twice now and, in both cases, they showed up within a week of us calling. Ive been very happy working with them the last few years for periodic maintenance as well and recommend them to friends. read more

5 star service. Scheduling was smooth, servicing was perfect. The technicians were very knowledgeable and respectful of our house. There is apparently a special going on these days, great value! Highly recommend. read more

Very satisfied with Legacy One. Prices were very reasonable, communication and updates were top shelf. Casey the tech was very pleasant, respectful and helpful. I easily recommend Legacy One, and will use again. read more

We had an HVAC install that needed to be done. They did the install and a great job but forgot to do a couple of small things. We are a business and when I called to have our new install inspected, we didn't pass bc they forgot to pull a certain permit and add an outlet. I called the second the inspector left and informed them of the failed inspection and the gal apologized and scheduled the follow up. The employees Orlando, Cristian, and TJ did a great job installing and the guys who came back (maybe the same ones, I'm not sure) did a great job finishing the work that needed to be done. We also had a repair for our furnace that was under warranty, and they sent out their best guy Casey. We love Casey - he does a great job and is always pleasant and explains the issues to me and does the fix. He is kind and always on time. He looks young and the first time he came to our facility, I thought that they had sent out an intern or the "new" guy -but he is so smart and knows his stuff. We are always really happy when they send him out. They are very professional, super quick to get someone out, and very knowledgeable. I would totally recommend Legacy One. read more

Absolutely excellent service and very competitive pricing, I'll come back to Legacy One for my future HVAC needs. Karl was extremely thoughtful, attentive, and creative in helping us find the best heat pump and installation configuration for our home. After it was installed, we had an issue where the inspector denied the sound permit based solely on the unit's advertised decibel rating and proximity from the property line (the inspector did not actually come out to measure the sound). Upon hearing this, Karl personally came out with his own sound meter to measure and send the (passing) results to the inspector. The inspector then came out with their own sound meter and the unit passed inspection, no problem. Karl and his team's expertise gave me confidence they'd installed the right unit in the right location, and their attentiveness to the situation saw the project through to a passing inspection. Trevor and TJ did an excellent job installing the unit - they were very professional, friendly, and patient in walking me through their work and answering my questions. Laura was very helpful in scheduling and billing. This has been one of my best experiences with any kind of contractor in Seattle, would absolutely recommend to friends and family. read more

The techinican came to our place is super responsive and patient. He kindly me answered my questions about the furnance, really appreciate his work! read more

Great team. From the bid to installation. Considerate. Cleaned up when done. No surprises.

I submitted a Yelp request for annual heatpump/gas-furnace maintenance quotes on Friday and received 4 responses, all from 4+ star providers. Legacy One Heating was having a special offer ~$100 off and I gave them a try. I requested and immediately received detailed info on their maintenance checklist. My appt was set for the day I asked for, Tuesday, 4 days later. On Tuesday, I got a message that the technician was on his way. He was scheduled for 10am-noon. He arrived at 10:20am and took a little over an hour to complete his tests. He was professional, personable, and knowledgeable. He offered to explain any facet of my HVAC system multiple times to make sure I knew he was open to anything I wanted. I give them 5 stars because they did exactly what I wanted, they did nothing wrong or negative, and I can not think of anything they could have done to do a better job. read more

Legacy One installed my high efficiency gas furnace about a year and a half ago. No problems in all that time. It is now about 20 degrees in Seattle, and my furnace just stopped working. I called the office, but it had just closed. I pressed the "this is an emergency" number for their after-hours line. Karl answered. He helped troubleshoot what was wrong: It is so cold that the condensation line to the outside had frozen. Karl stayed on the line with me, telling me where to cut the line, so that it could drain into a bucket until a service person could come out. The heat is now on again in my home, and thank goodness, the high is going to be in the 20s for the next several days. Highly recommend Karl and Legacy One! read more

Great job installing an AC unit and replacing the heater. Quite happy with the process and end result

Called with an emergency. Furnace had stopped, house was cold. I never got a response. I educated myself and the repair is in progress (I am waiting on a part) Even more insulting than ignoring a customer is the fact that they advertise 24/7 service, which they don't provide. c'est la vie read more

Update: Update in response to the reply from the owner. My claims are certainly not "unfounded". Your team last came to our home for installation on the 17th and declared it could not be done. On 17th we called your salesman -Tim several times to ask for a refund. Our calls were neither returned nor accepted. On 18th we wrote an email to your Salesman & accounting team. We got a response on 19th that a refund will be issued. I have all the emails & call logs as proof. Please verify with your own employees before making unfounded claims yourself. Also the 3 month timeline is absolutely accurate. You came for the first installation 2 months after we first contacted your Salesman. The 2nd installation attempt with the wrong genie lift was another month after the fires installation attempt. If your salesman had told us during the initial inspection itself that installation was not possible, we would have contacted other vendors instead of wasting our time with Legacy One. Original: If I could give Legacy One zero stars. I would. This company does not even deserve a one star rating. We signed a contract with Legacy one to get a mini split air conditioner system installed in our Town Home. Their salesman came over for an inspection and promised us he could get the work done and we paid him more than half the deposit. After waiting for 2 months for our installation date, The installation guys showed up with a Boom Lift that did not fit or cover the height of our townhome. They said an installation was not possible & left. We tried to reach their Salesman , who said he would look into getting a scaffolding /ladder setup instead. He promised to call back but never did. We had to repeatedly call back to reach him & finally managed to schedule another inspection. The salesman & the owner, subsequently came over for another inspection. We suggested the use of a scissor lift. They agreed it would work & left. We agreed that the right model of scissor lift for our home would be the genie - 3246. After waiting for another month, they finally showed up for installation with the Wrong lift model again. Instead of genie-3246, they brought the genie -3232 which did not have the height clearance to fit. We had to print the manual for the genie -3232 to show the team how they could reduce the height & fit the lift in our space, he seemed very reluctant to get it done. Finally, the owner decided that the lift might not fit & declared that he cannot installed the air conditioners for us. Subsequently we kept calling the salesman to demand a refund of the amount we paid (over 8000$) and he literally neither picked up or returned our calls. After multiple calls & emails we finally got our refund. This company shows zero interest in getting the work done once they have your money. And equal reluctance to issue refunds. 3 months of time & effort completely wasted on Legacy One. If installation was not possible, we would have liked to know on the day of inspection itself. Their salesman, clearly has no clue on what his installation team can do or cannot do. I would never recommend Legacy One to anybody. Most incompetent company ever. read more

Legacy One wasn't able to help me with my request to fix my portable AC unit, but they did respond right away to let me know. When I asked who I should reach to they actually responded right back with some advice. I'm writing this review to remind myself of where to go when I need the services they offer. read more

Legacy was able to get me in quickly and had great communication about when they would arrive. They updated me about the arrival and arrived right on time. Their technician Ty was professional. It was a good value and they didn't try to upsell me. I'll be using them in the future read more

Legacy One Heating - Arrived right on time! - Heating & Air Conditioning/HVAC Near Me - Mukilteo, Washington

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They're the best in the business. We've been using the services of this business for years! High integrity, fair pricing and have always done an excellent job in servicing our heater and water tank. read more

Super fast response, came on time, was thorough and professional, all while communicating very well. We'll be calling this company again and I've already recommended them to a neighbor. Thanks, Tristan! read more

Casey is great to work with. Had a furnace issue, and they were prompt and professional. Thanks for your help!

Had a great gas furnace maintenance visit from Casey. He took his time, was thorough, friendly, and even diagnosed and fixed a wiring issue that previous visits from other companies hadn't addressed. Also replaced my filter for free. I'll definitely be using Legacy One again for my maintenance needs. Thank you Casey! read more

We needed our gas furnace serviced, and found Legacy One through Yelp. I'm glad I did! The service tech Tristan (sp?) was great! He was extremely polite, and took time to explain what he was going to do, and answer my questions. When he was done with the service he showed me a couple parts on the furnace that will need some attention soon which I appreciate. I'll be calling Legacy One for any future HVAC needs. read more

It could not have been easier to request a quote, schedule, and pay. I requested a quote through Yelp which I was sent very quickly along with appointments available. I was able to pick one of the appointments through the app and have it scheduled. They sent me a few reminders via email and text which included info if I needed to cancel or reschedule. On the day of they were running ahead of schedule and came early (with permission). I was sent a link to see exact ETA of the tech and could watch arrival on a map. Ty was professional and changed out the filter for me. Otherwise I just requested regular maintenance which was completed. I received an email with the invoice including link to pay online. Super easy from start to finish. read more

I replaced my furnace, with installing a new AC unit back to 2021 with them. The installation process is pretty smooth and pleasant for me. The unit runs without any problem except the heat was out for a day last winter when I was not at home. In this year's free annual inspection I told the technician Casey the issue, Casey was super helpful to debug the problem happened last year which we cannot even reproduce. Finally we find the issue is condensation pipe (which belongs to my old unit, not part of the new installation). Casey was very helpful to stop by another day to fix the issue which fits my tight schedule without charging. Casey is one of the most nice and helpful technician I ever worked with. My experience with legacy one heating is positive so far! read more

Our air conditioner of 15+ years finally died a month ago. I typically only use All Climate Heating and AC and I again was considering using them to install our new unit. They gave us a reasonable bid and I was getting ready to sign their contract when my wife was given a referral to speak with Tim from Legacy One Heating. I decided it couldn't hurt so I met with Tim and I really liked him a lot. He was down to earth and very trustworthy. After receiving his bid which was about the same and researching Legacy One, I decided to give them a shot and install our AC. I must say that I was very happy with the results of the work- we love our new air conditioner and they also fixed our air purification system. This company is a smaller company and I feel like they give better service than what I have had before- more attention to detail. I will be using Legacy One in the future to service my heater as well. read more

My A/C failed so I called for a couple of estimates. Joe gave me the straight answers I was looking for, at a price I could live with. The install went on time and efficiently, very competent crew (Ukrainians: hoo-rah); no shortcuts and revised my setup to code. Would highly recommend the company. read more

After obtaining 7 (very) different quotes to replace our old heating oil fired furnace with a heat pump we selected Legacy One to do the work. We were pleased with our choice. Kat managed the estimating process and was flexible in understanding and adapting to our future plans to remodel the furnace room area; even coming out on a second visit to confirm the proposal as we refined our plans. Legacy One's pricing was competitive given the custom duct work we had requested. Teddy and Kyle completed the install work professionally and on schedule, even working later on the second day so the third day was not needed. Legacy One went the extra yards to ensure the work was done right and I would certainly use them again. read more

We had a ductless system installed in our 100 year old craftsman as part of an ambitious energy upgrade. These guys knocked it out of the park. No schedule changes. No excuses. No upsells or add-ons. It's obvious the owner(s) take pride in running a great company where a persons word still means something and customer service counts. Would recommend 100%. read more

Very friendly, professional and honest. highly recommended. They are probably the only one that has explicit price posted and scheduling is very easy and straightforward. They came on time and very friendly and professional. read more

They are fantastic. They were able to schedule a last minute appointment to fix my air conditioner. Came right on time and were super helpful in getting my mini split running and educating me on the different modes and how to use it. Highly recommend! read more

Hired for gas furnace maintenance. Easy to schedule, very responsive, on time and very professional. Will hire again!

Legacy One installed a split heat pump system for us. Everything went really smoothly, the installation was professional and courteous. There was a small issue with one of the indoor units - I emailed them late in the evening and someone was back in the late morning to look at it. Would definitely recommend them to others. read more