4-L Engineering Co Inc

We’ve been using 4-L for the past 5 years, and they’ve been fantastic. They are reliable, and always deliver on time. The team is easy to work with, responsive, and professional.We highly recommend them to anyone looking for great service and dependable results! ☺️

Warning! GET AWAY FROM 4-L - Do not trust this company after multiple issues last summer I managed to negotiate their fees because they never disclosed their origination fees. They will charge since your technician leaves home to get to you and then minimal charge is surreal, because this was a high rise they think they can fool the people and leave LOOSE WIRES INTENTIONALLY. Will be reporting them to the BBB since I just found multiple intentional issues now on my furnace right on time for the freezing weather. My tenant actually had to kick one of their guys from the job and they insisted in charging for that visit.

I live in one of the older high-rises on Turtle Creek and my hall bathroom and toilet were backing up. They offered me emergency service and quoted me the price as well as normal hours. I took them up on the normal hours and they arrived on time and cleared the backups. They called me on my cell when completed and the technician cleaned up after his work.Now, my master bathroom sink is backing up and I just scheduled another appointment. The receptionist, Terri, was quick to offer available times and I look forward to having this resolved.Yes, they are a bit pricey and its worth it. They know my building quite well. As my father would say, Money well-spent.

Becareful with this company, they won’t give you an estimate or bid upfront. They will miss a day (apparently it takes three days to fix a single unit- they charge over a hundred dollars per labor hour) and they won’t communicate or let you know why they didn’t come to work on a unit until you call them. For a business this affects sales but worker apparently had an emergency. Overall terrible experience. They won’t let you know how much they’re going to charge you until the last second and surprise you with a couple thousand dollars. Hope they do better for other clients. Edit: just had to call another company because the unit has stopped working today and is leaking fluids. This is one week after the experience stated above with this company. I’m sure you are still looking forward to your payment. Also please do forward everything you proposed to send to email about estimations(with date) communication chains etc along with the time stamps. Also your worker didn’t show up the second day, though he was given confirmation the day before to go ahead and work on the single unit out of three for our store. There was no heads up for his no show and when I called your dispatch, she claimed worker had an emergency call to work elsewhere while the worker explained to me he was waiting for parts on same day.

Dont trust this company. The worker told me that he needed to charge me from the moment he got the call to come to my job. He also stated that I needed to pay for the time it took him to get cleaning fluid to clean the system. Which took him an hour and a half. Lastly he told me that if I replaced my unit it would cost about $20,000. Just got a bid for $9,200. Dont trust this company.

These guys are incredible! I was told by multiple companies to replace my entire a/c in my loft downtown dallas. They came by and in 45 minutes cleaned out all the lines and im back in business. My tenant had just moved in so it was stressful when it went out. Both management and the technician really knew their stuff!

Excellent service and response! They were here performing work for the building (high rise) and were able to come take of the plumbing problem in my unit while they were out!

Wow; talk about a joke company. I scheduled an appointment. The tech came out on a Friday and Spent 45 minutes to an hour at my house. He said he would send me a quote on Monday. On Monday, no quote. I called him on Wednesday. He said the estimator was supposed to send it and he would get back with me. Nothing by Friday. I called on Friday—he was short and said “we don’t do residential.”I called to complain. Never heard back. I called again and was told a manager would call me back. The hvac service manager did—and he said the employee was new…no excuse. He said “we do residential and the estimator will call you back today and we will get you taken care of.” A few minutes later , the estimator called back and said “we don’t do residential…unless you’re a high rise.” What a bunch of clowns. Stay away from this company.

I’m with a lot of these other people that are sending in reviews that say these guys are a rip off! If it was possible to give a zero star I would. I’m usually not one to write reviews. I pleaded on how important it was for their service because we had standing sewer in our kitchen. Let me just tell you these people do not care!

I appreciate ALL of the 4-L staff, administrative, and engineers. They are always up front and honest, so I know what to expect. Commercial NOT residential vendor

We have worked with 4L at numerous high-rises on Turtle creek. They do a great job. Very knowledgeable

4L is a super awesome company! Highly recommend!

Is good

Almost ran me off the road trying to cut in front of me. Very professional.