Get matched with top central humidifier installers and replacers in Knoxville, MD

"Everyone from Presidential has been friendly and helpful -- great customer service! Glenn came to our home to discuss options to replace our furnace (fuel oil) and AC systems with a heat pump. He immediately understood that we were looking for a heat pump eligible for the new tax credits (unlike another company, who only provided estimates on what they had in stock). He prepared the estimates for 3 different models on site, and he noted that the heat pump eligible for the tax credit would cost about the same as an older model (unlike what the first company told us). We were able to schedule installation quickly, and then the adventures began. Harvey and Andre were here for 12+ hours...because a wire was either never connected at the factory or came loose during shipping. We also had to replace a defective line from our house to the unit. While it was a complicated install (not the fault of Presidential), we rec'd great service from hardworking staff members. Highly recommend!"

"Called another company I was familiar with but had to pursue them for 5 days! No heat and told it was best to replace the entire unit by 3rd day and they'd order the parts (3 men, 4 hours, & $3k was what I was told). Finally, decided it was too much suffering and temps were dropping. Called Relax Air and he came within the hour, did a thorough analysis. Very professional. The final outcome was one of 3 parts were broken. Also a parts dealer, returned with the parts and tried each one. It was the module, fixed in one day, and for under $1k. He also checked/fixed the humidifier (which said initial company said they did upon initial repair visit and 2 yrs ago for regular maintenance) and adjusted the heating so the house is now perfectly balanced. After 4 years living here, finally no more cold spots!"

"Holtzople honored my request for an appointment after 2pm. Corey called 10 minutes prior to arriving and went right to work inspecting my ac system. He discovered some build up (he didn't call it mold because he doesn't have training in identifying mold but I'm referring to it as mold) on the coils, which he cleaned. He showed me the "mold" inside the coil cabinet and provided options and literature for a UV light resolution without pressure to make an immediate decision. His inspection discovered the system was 2 lbs low on refrigerant. He filled it and noted the level for comparison during the next inspection. Since the ac system was poorly installed several years ago by a different HVAC firm, there's a question if there's a leak or the system wasn't completely filled when installed. I chose Holtzople last fall to replace my 24 year old oil furnace because I wanted a small, local, dependable company for HVAC services. I've found everyone from office staff to salesmen to technicians to be pleasant and focused on my needs. Equipment options are presented in a manner that isn't condescending or inpatient that a non-HVAC person can understand. I believe I've found the HVAC company I'll be using from now on."

"Blake M. was able to work thru issues created by installation in a double wide vs. a stick built house. Service was professional and pleasant. Blake kept me informed every step of the way toward project completion. Area was left spotless."

"JDL HVAC Services was the contractor provided by our home warranty company to repair our heating system. The were initially prompt and came out to the house and attempted to diagnose the problem. The technician though the problem was the circuit board and JDL delivered a replacement from Carrier the same day. Unfortunately, the part did not fix the problem and the technician thought the replacement part was defective. Unfortunately, it was Friday and Carrier wasn't open on the weekend. I specifically asked the technician what would happen on Monday and was told that JDL would get a new part Monday morning and then come to the house immediately to install it. This was very important since we had no heat on Friday and over the weekend and the temperature dropped below 20 degrees at night. Monday was a disaster. Unknown by us, JDL called at 7:30 a.m. and when we didn't answer, they removed us from their schedule. At 8:30, we realized they'd called, and contacted Joe and he added us back to the schedule, but in the afternoon. When a new (more experienced) technician showed up, he did NOT bring any replacement parts. When I called Joe to inquiry why the technician had no parts with him as promised Friday, he said he wouldn't buy another part because he couldn't get a refund on the first replacement circuit board. He also wasn't convinced the heater circuit board was the problem and wanted to do more diagnostics. I also asked Joe why they didn't come out in the morning as originally promised, and he had the audacity to blame us for not answering his phone call which we had no idea to expect. He also blamed his technician for providing us incorrect information. He did put another employee on standby to get parts from Carrier once the new diagnosis was complete. The new technician found another part that had failed and it was delivered with the original replacement circuit board. Both replacement parts were installed. While the technicians were friendly and informative, Joe was rude and lacked friendly or acceptable customer service skills/friendly. He also does not keep his technicians informed (the new technicians couldn't answer any of my questions) and it did not appear the technicians speak to each other when they transfer a repair. Overall this was not a positive experience due to the poor customer service from Joe. He did call an apologize (left a voicemail) after the repair was complete."

"One of the best contractor experiences we have ever had. Jim called the day before to confirm the appointment. Larry the Plumber was so nice to deal with. He put on she covers to protect my wood floors, worked very neatly and gave us some tips about ongoing maintenance. He did a perfect job. This review us for Petro in central NJ. i was not able to change the company location. We hired them through Amazon."

"They replaced my water heater and did and excellent job"

"Woke up this morning to my hvac leaking and contacted Markool. I have never used them before and was in a pinch. They fit me right in this morning and were out at my house within 2 hours. The tech stepped in the door and placed covers for his shoes so he did not track in any dirt which was impressive! The tech was very professional and super friendly. Problem was diagnosed and FIXED within an hour. The price was extremely reasonable to the point I was shocked in a good way (expecting a higher price). Anyways, I will most certainly be a returning customer. Thank you Markool Heating Cooling Plumbing."

Whether you need a repair, preventive maintenance, or replacement, we are your plumbing, heating, and air conditioning service provider in the northern Virginia and surrounding areas. We invite you to give us a call!

"Professional courteous service by John the technician. He took extra time to troubleshoot and made sure the humidifier worked with my existing thermostat to make it more convenient to regulate the humidity setting."