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.

Josh came out to fix our HVAC and was very courteous and friendly. The company, Carroll Mechanical,…read more scheduled the appointment for the day after I called, which was impressive. Josh quickly replaced the igniter, and it came with a one-year warranty. Saved me 12k to replace it! definitely worth it. Highly, highly recommend !

If you are looking for a good, honest, responsive local company to take care of you HVAC needs call…read moreTriple E. Mario came out and gave us a very honest estimate of what we needed. After seeing several other companies and hear what they had to say and gave us their estimates we had to go with Mario and his team. They installed a Daikin unit with barely any wait time. They were able to use the existing dampers from my previous Carrier unit even though their competitors said it wouldn't work. Unit comes with 12 year parts and labor guarantee which is the best deal out there. They didn't have the unit I ordered so the manufacturer upgraded my unit for free. Great first experience. PS 4 weeks later my house is actually cold and my house have never been cold. You have to give these guys a call. I had a question about the app and Mario called me back right away. Couldn't be happier.

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

Great company to work with! The quality of their work was excellent! The office staff was very…read morehelpful in providing answers to our questions. The people who installed our new AC were qualified & did a great job.

Was helping my mom get some electrical work tidied up. Interviewed 4 companies. At the time Tim…read moreKyle was the most reputable and competent. But pricing was very high and their rep did not itemize the services needed. Nonetheless we decided to go with Tim Kyle. In the meantime to get the price down we omitted nearly everything with the exception of just one dimmer switch and one ceiling fixture. Asked the rep to revise the contract and resend with updated pricing. He refused and said he would just update our price later after he came out to get the work done. Huh?How can we schedule work without knowing the cost? Kinda sux but ended up finding a different company that charges per hour + parts and are pleased with the outcome. Tim Kyle we tried to give you our business ‍

Sincerely care about their customers, they actually go out of their way to make sure the customer…read moreis happy and not broke at the end of the day. I can't say enough good things about this company and the people that work there!

I contacted Crew Heating & Air Conditioning to diagnose a problem with my heat pump during the…read moreextended cold spell in January 2025. The technician arrived on time and conducted a very thorough check of the system. He found and corrected an issue with the thermostat. He only charged me for the diagnosis/service call. He didn't try to 'upsell' me on services or equipment I didn't need. Crew Heating & Air Conditioning will be the first company I call when I need to service my heat pump.

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.

I used this company to have my furnace cleaned out and the service technician, Ron Johnson, went…read moreabove and beyond to complete the task. He explained what he was doing and made sure I understood. Also I appreciate the fact that they price matched a lower quote I received from another company. I will be using them again for another service I need!

We got scheduled quickly and the service technician arrived promptly. He was extremely personable…read moreand efficient in fixing our system. He also proceeded to perform a routine maintenance for us, maximizing the value of the service fee. We will definitely use Advanced Heating and Cooling again.

A good friend recommended Modern Comfort Systems/Rittenhouse for a second opinion. My longtime…read morecompany diagnosed either a faulty fan or complete heating system. Donna quickly and easily set me up with a service call. Mr. Gregg Hines arrived punctually and was on the problem. In less than an hour, he repaired my heater. The accurate diagnosis: a bird had flown into the heater fan. Poor bird, but the "bill" is very fair. Thank you Mr. Gregg and MCS/Rittenhouse.

They called me to do the annual service on my HVAC system and hot water heater. Nice tech shows up…read moreon time and gets started. Finished up and left. No service ticket and I think he only did the A/C as there was no odor of fuel in my basement. I noticed at breakfast this morning that he had moved my hose to wash out the unit and in doing so had uprooted my shrubbery. When I went around to the back hose bib I found the hose, in a tangle and the hose bib left on! This seems consistent with this firm. They do not respect clients' property. And they are not cheap.

Emergency furnace repair Arrived within an hour and fixed a…read morecondensation problem. Julio was prompt, professional, knowledgeable and polite

From the owner: Welcome to the season of unpredictable weather! When the temperature swings 30 degrees in a single…read moreday, your HVAC system has to pull double duty. Don't let the transition wear your system down. We’ll make sure your furnace can handle those lingering frosty nights and your A/C is prepped for those surprise warm afternoons. Call now to schedule a free estimate (410) 698-3944!

We called Adam yesterday and this morning he was here. He thoroughly investigated our propane…read morestove problem and made suggestions on various approaches to correct the problem. Dealing with such an old unit is not easy but he persisted and covered all possible trouble spots. He was generous with his time and his experience. He's a respected professional and we will definitely call on him in the future with any HVAC issues. And will follow his professional guidance forward. Problem solved. We recommend you call this company if you want the best service at a reasonable price with support after the job is done.

Adam is fantastic! He has taken care of our AC for the past two years and he is always honest,…read moreupfront and trying to save us money. He is very responsive, including meeting us around our hectic work schedules and answering all of our questions. I can't say enough about how great his customer service is and would recommend him to anyone.

Did great work and were very reliable with great communication. Highly recommend for any household…read moreneeds.

Was having an issue with a pellet stove in a house we bought. These folks were able to come out…read morefirst and took care of everything within an hour. I asked beginner questions and got really detailed answers and support. I especially appreciate the honestly regarding fuel and maintenance. I compared around prior to booking and will say they have competitive pricing for my needs. I'll be continuing to use them moving forward.