DO NOT USE FROSTY…read more While it is true what others have said that the technician Terry was fantastic, the management at Frosty is not trustworthy. They low-balled an estimate when they had knowledge of the unit, the specific part needed, and the industry standard for labor. And when the job was completed in less than time than expected, the final invoice came back 70% higher than the high-end of the estimated range. The misleading initial estimate was either fraudulent in order to get the job, or incompetent. Terry should work for someone else. I would not trust Frosty.

I am so grateful we found this company. We have geothermal and have a service contract with Frosty…read moreRefrigeration. generally the unit is problem free. However,this morning we realized the house was not keeping cool. The thermostat told me to call for service. I called around 12:00 pm. Kyle arrived at 3 and was here 2 hours. He fixed it and we are cool! HIGHLY recommend!

The A/C at my office was not working and I couldn't keep working in a sauna. I called the main line…read moreand Scott came out, same day to troubleshoot and diagnose the issue. By the end of his visit, he had refilled the freon in our rooftop unit. His price was good and the service was quick and efficient. I'll definitely call again if we need other HVAC services! No one asked me to write a review, but I wanted to share this experience.

Third review and third time satisfied customer. After having Andrew come out to maintainance our…read moreheating system, it stopped working overnight during the snowstorm. The owner Scott called me to assure that someone would come back out...sending our Andrew again before 12. All was explained to me amd fixed as well as suggestions made for the future. Thank you again for making customers your priority always!

I had a heat emergency with my heat pump and they quickly came over and resolved the issue!read more

Troy was awesome! Friendly, knowledgable, honest and fair! I always request him when it's time for…read moremy service appointments.

Has some two jobs for us so far. Great and fast work! Fair price, friendly and thorough service…read more Highly recommended

From the owner: At AguirreSa LLC, we’re your one-stop experts for electrical, HVAC, and plumbing services across…read moreBaltimore City, Baltimore County, all of Maryland, and parts of Virginia and Pennsylvania. From home repairs to large commercial projects, our licensed team delivers fast, dependable, and high-quality work you can count on. We handle everything — from AC and heating installs to plumbing repairs, rewiring, lighting, and system upgrades — always focused on safety, efficiency, and long-term results.

We lost heat and it was cold. Daniel with Carroll mechanical came out quickly and assessed the…read moresituation on a Friday of a holiday weekend. He took the time to explain what was wrong and his process. He determined the problem and applied a solution that got our heat up and running again. Here's my real review. I will use them again. I feel like I now have an HVAC guy. Small business, local company, good friendly people, honest pricing. Thumbs up.

Carroll Mechanical was recommended to me by a friend and after my conversation with Thaice, the…read morecustomer service rep, and Derrick the technician who worked on the HVAC unit, I can see why. Both were so helpful and knowledgeable and answered all my questions (and I had a few). I wouldn't hesitate to call on Carroll Mechanical again and I definitely would recommend them to my friends as well. The service is 5-stars, quick appointments and pricing is fair.

Our AC went out on the afternoon of July 1. Ricardo responded that evening and came by our place…read more He sent an estimate to replace the system the next morning. He ordered equipment that day, pulled our old equipment out the next day, and installed the new system on the July 4 holiday. His estimate was reasonable, the equipment he selected was appropriate, he moved quickly, and he delivered on a holiday. He'll be my first call for future HVAC work.

Ricardo and his team should be teaching the class on customer service. He's an perfect example how…read moresmall family-owned businesses can outcompete larger organizations. This man will hustle and break his back to earn your business and build a relationship with his customers. He takes pride in his work. I cannot recommend this place enough. On a Friday afternoon, I reached out to ~5-7 vendors to assess a broken HVAC in a DC condo. Ricardo was able to come out IMMEDIATELY at 8PM on a Friday night. He did a quick dusting of the unit which hadn't been serviced in a while and even went to the roof as a part of his diagnosis. After sticking around for a couple hours trying to find the source of the problem, I was mentally preparing myself to pay a diagnosis and service fee, but there was no such thing. What signaled to me Ricardo was top notch was the fact that this man lives in Baltimore, easily a 50-minute commute from where I was in DC. He didn't leave until I was satisfied with his work until 930PM on a FRIDAY night. This type of service is difficult if not impossible to find. Ricardo patiently explained what the problem was, why I wouldn't have working AC after he would leave, and what my options were. He was very transparent with pricing, sent over a couple of quotes, and laid out what install schedules would look like depending on which manufacturer I went with. He and his team came in Tuesday and the install lasted about 7 hours. Fully working AC in less than 2 business days at a reasonable and competitive price. You cannot beat that.

Quick and professional. They came right away after I call. Highly recommended for serviceread more

I highly recommend this business whenever you have ac issues! After getting a couple of scamming…read morebusinesses only interested in taking your money, and not helping, we found MD Heating and Cooling in Ellicott City. They were very professional and experienced and fixed the issue quickly. Thank you, Debbie.

Eli provided duct cleaning, HVAC duct insulation, added air ionizers to 2 systems, fixed a broken…read morecondensation drain, and moved both of our heat pumps off of an rotted old platform to a new concrete pad. Was pleasant, reliable, professional, and fast.

We returned to our condo to find the A/C not working. Eli answered my call and was there within 15…read moreminutes. He had the parts on his truck and fixed the problem quickly.

Horizon Services is our plumbing, heating, and a/c service of choice. They helped us when there was…read morea blockage from our kitchen sink beyond our utility sink in our basement. H.S. had serviced our old heathing and a/c unit faithfully for years, providing suggestions to help extend its lifespan. When it came time to replace our old heating & a/c units, H.S. was the only company that we called. They listened to our wants and needs in the new unit, laid out a variety of units and cost and helped us to choose the one that best met our needs. H.S. goes out of their way to explain the process, regardless of the size of the job. Plus, they contact you when it is time to have your a/c & heating service. H.S. has wonderful staff regardless of the time that you call. We had a issue occur at 1 a.m., so we called H.S. to have a technician come out. The employee answered the phone "Its a great day at Horizon Services. How can I help you?" It was 1 a.m. and he was so friendly and understanding. This company knows how to listen to customers. It appears to me that they believe in the 80/20 rule. Listen 80% and talk 20%. We will be their customers for life. We have recommended H.S. to our family and friends.

I requested to have a few lbs. of freon added to my ac unit. Just make sure you have plenty of…read moreVaseline ready