Heating & Air Conditioning / HVAC near Eldersburg

“Updated Review May 2026:
The prior heating repair completed by DesignFlow did solve our heating problem but then our AC took a nose dive a few weeks later (our whole system is 25 yrs old). Their technicians were dispatched again, they came right away- this time for our AC (bc we went from cold days to warmer days end of April) They told us our unit is slowing going to fail us once the temps hit 80°. They were right! Temps hit 80+ and boom- no cool air. We decided to replace our entire hvac system- furnace & AC. DesignFlow to the rescue! Chad and Daniel came this week and it was a great experience once again. They worked morning to night to get the new system in. This company wins the award for customer service excellence! From sales, to scheduling, to service, and payment process- A+ company. Excellent communication! Very professional, friendly, prompt, knowledgeable, skilled! HIGHLY RECOMMEND!!!!

First Review April 2026:
Excellent experience! Our furnace stopped working. We called Design Flow. They answered the phone, the Representative was friendly & informative. Scheduling was simple. Ashton & Daniel arrived same day, on time, and got right to work. They diagnosed the problem, completed the repair efficiently, we now have heat (it’s been a cold April), and these two men were very knowledgeable, extremely professional, friendly and so kind. I highly recommend Design Flow. They offer annual maintenance plan options too! A company with integrity and a commitment to customer service excellence.“

“My family and i were freezing cold in the dead of February due to our heat went out. Luckily I called A-Air and they were super polite and professional and fixed our heat in no time at all and we were warmed up by night fallService: A/C system repair“

“We are long time customers of Comfort Temp Heating & Cooling. They installed our heat pump and central a/c at our home over 14 years ago. Had them come out to service and repair our system a couple times and feel they are honest and their rates are fair. We also had them install 3 mini split ductless units in two of our commercial rentals within the past year and we are pleased with the end results. Overall we are extremely satisfied with their services and feel they are very professional, do good work, reliable and experienced. We will continue using them for our future heating and air condition needs and highly recommend their services.“

“Amir was very responsive and extremely helpful. With a very fast turnaround time, he identified a simple fix for our HVAC problem and replaced our water heater. His price was reasonable and the install was completed with good attention to detail (making it fit in the original tight spot, despite it clearly being more work for him). He was very highly recommended on our neighborhood listserv, and I can see why!Services: HVAC system repair“

“The guy who came out to my home was absolutely delightful and amazing. I read all the negative reviews beforehand and was worried bc I too got them through my warranty. But he was opposite everything I read. I called him and he tried to squeeze me in the same day but was unable to (thanks for that effort!) Came out the next day (??) Called the warranty on the phone before leaving to make sure they did what needed to be done (??) Now I’m connected to an electrician and the process has been faster bc of him. Thank you so much for your efforts and your professionalism!“

“I have had nothing but positive experiences with Parker in my 4 years as a customer. I have a service contract for a reasonable price with annual inspection included. When the weather got cold last week for the first time this season, my heat failed to kick on. Jim came by on a Saturday morning and walked me through everything he was checking at the furnace, found the issue, and repaired with a new oil pump in less than an hour. Oil is an expensive commodity, so I am glad I can trust Parker to have fair prices, knowledgeable service techs, and fast response times.“

“Very professional and courteous. Zach was knowledgeable and helpful. Identified and corrected the initial issue quickly. When a follow-up concern arose a couple of days later, they came back out without question and identified that problem. Would definitely recommend.“

“Our church has been using Complete for many years and they are always going above and beyond to make our environment comfortable!“

“I originally utilized their services back in June 2023. Because of a roof inspection it was uncovered that the dryer vent was clogged. I contacted Duct Doctor and they sent a team to inspect the drier vent as well. Because the vent was very clogged, they agreed to clean it again; they felt that the previous cleaning was not completed properly. As a result there was no charge. This strengthens the integrity of the Duct Doctor business and I will definitely use them again. Kudos to Nitin“

“Diego and crew showed up early morning. Worked until job completed reviewed system with us. Great job , highly recommend!“

“Michael Runk plumbing responded to our plumbing needs promptly and the job was done the same day. Great service!“

“You will not find anyone as honest and kind as Kevin! He has helped us with an old furnace, and replaced our AC. You can always rely on him and his team to be honest and give you a fair price. We've recommended him to everyone we know.“

“Workers were there on time and work was done in a very timely manner. Workers were very friendly and courteous. Would recommend to anyone.“

“This is my go-to company for Hvac service. Every time I've needed something done, they have handled the job promptly and professionally.“

“We have started to use Mark within the last year and he has very quickly become our go to guy for our clients for any HVAC needs, including our own home. We would recommend him and his crew to anyone!“

“Previous vacumn was 20 years old. Today I have a new vacumn and I keep the old one for downstairs! Wayne is personable and professional!“

“Benyam was a punctual, efficient professional, all the while explaining everything he was doing, in great detail. My HVAC system stopped working completely, and I received same day, outstanding service, for a very reasonable price . . . "Supreme Service", aptly named !“

“Our heat stopped blowing yesterday around 5pm. I was able to go to the website and request a next morning appt. window of 8-12. By 7 am it was 55 degrees in our house. The technician arrived by 930am and had the heat back on by 1030am. Cody was very friendly and professional. Highly recommend!“

“We have used Chares A. Klein for many, many years because their service has been consistently outstanding. Most recently, we wish to commend Carlton, the service provider who came to my home. His friendly, attentive, and professional qualities make him a true asset to the company and to the consumer. He is the best!“