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Verified Reviews for Air Conditioning pros in Timonium, MD

*The Angi rating for Air Conditioning companies in Timonium, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

*The HomeAdvisor rating for Air Conditioning companies in Timonium, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

Last update on April 14, 2026

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Avatar for DUCTZ of the Upper Bay Region
DUCTZ of the Upper Bay Region
4.9(
121
)
Air Ducts & Vents - Clean

Serving Timonium, MD and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"The DUCTZ team did an amazing job. They provided a VERY thorough cleaning of all of my ductwork and HVAC units, even down to the wires in the unit. They were ;professional, clean, and courteous in my home. I was worried that there would be dust or debris left after the cleaning, but they left no trace. I would 100% recommend DUCTZ to anyone in need of duct cleaning (and even those who didn't realize you need duct cleaning - it's much dirtier than you think back there). You'll be amazed at the results."
Trunk line before cleanin
Trunk Line after cleaning
Evaporator Coil
Return inside stud wall
Supply Branch

+3

Response time8 hrs
Recommended by99%of homeowners
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Avatar for Heating & Cooling Certified Mechanic
Heating & Cooling Certified Mechanic
5.0(
35
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Timonium, MD and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"Replaced both my compressor and air handler which was nearly 50 years old, rewired and plumbed everything, added and removed ducting as needed to provide a clen install. Team was fast and professional During the initial quote/Inspection worked with me to understand my cooling needs and did not ty to upsell me. Scheduling was quick and they were even able to move up my install date. I would recomend them to anyone."
Installation
Installation
Installation
Installation
Installation

+20

20 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for Bamford Plumbing and Heating Inc
Bamford Plumbing and Heating Inc
4.8(
65
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Timonium, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Emergency services offered

Warranties offered

"Doug was helpful and responsive; he did a number of small plumbing projects for us.
"
Do you know if your sump is still working? We also have sump pumps avialable to protect you from power outages. That’s right no power no problem forget about the “battery back up” sump pumps if you have municipal water supply this is the way to go call today for details !
Tankless
Power Vent
Gas and Electric
Tree roots giving you problems with your drains? Have us come out today and try a Rootx root treatment !

+2

3 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for SM Mechanical, LLC
SM Mechanical, LLC
4.4(
56
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Timonium, MD and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"The two gentlemen who installed our new air conditioner and gas furnace worked together with incredible teamwork, skill, and attention to every detail. It was quite remarkable to see how skilled they were in the performance of their jobs. They were also both very professional and personable. I highly recommend S.M. Mechanical LLC. to anyone who needs a new air conditioner or furnace."
Multi Zone Oil Fired Hot Water Boiler Install
Gas Furnace/Air Conditioning Full Duct Job
Gas Furnace/Air Conditioning Change Out
Multi Zone Oil Fired Hot Water Boiler Install
Gas Fired Steam Boiler Install

+18

Response time8 hrs
24 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for Carroll Mechanical, Inc.
Carroll Mechanical, Inc.
5.0(
20
)
Central A/C - Service or Repair

Serving Timonium, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"My air conditioning stopped working last night. I called Carroll mech . They responded immediately and sent technician to the house few hours later. Jordan Scott was very professional. He checked the system carefully and fix the issue soon. Really appreciate the service!"
Trane Heat Pump
Carrier AC + Furnace
Response time5 hrs
79 neighbors recently requested a quote
Recommended by22%of homeowners
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Avatar for Regal Duct Cleaning
Regal Duct Cleaning
4.9(
68
)
Air Ducts & Vents - Clean

Serving Timonium, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Credit card accepted

"Julius and Wilmer were very professional and did an excellent and thorough job cleaning cleaning the whole air-duct system, air vents, dryer vent, and even bathroom exhaust vents."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+12

Response time7 hrs
2 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for The Best Air Quality and Restoration
The Best Air Quality and Restoration
4.8(
236
)
Air Ducts & Vents - Clean

Serving Timonium, MD and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Best Air Quality and Restoration did a spectacular job! I can't say enough about the employees. They did an outstanding job! They were punctual,polite and followed social distancing protocols.They assessed the home and cleaned the air ducts quickly and efficiently. I am very pleased with their service and highly recommended this company. I purchased a new home and had them come clean the ducts to improve the homes environment. They showed me before and after pictures and I noticed a difference right away"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+50

Response time1 day
Recommended by93%of homeowners
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Avatar for Pohlman Plumbing Inc
Pohlman Plumbing Inc
4.4(
42
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Install - For Business+4 more

Serving Timonium, MD and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Hired Pohlman to evaluate two natural gas tank water heaters in our home, one of which was unoperational. They suggested combi-boiler for our home in lieu of two tank water heaters. They did a great job and we are very pleased. Customer service is top notch, and I highly recommend Pohlman Plumbing."
Finished Shower
Finished Shower
Panoramic View
Vanity
Mid-replacement

+10

Response time8 hrs
Response rate87%
Recommended by86%of homeowners
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Avatar for Carroll Mechanical, Inc.
Carroll Mechanical, Inc.
4.7(
22
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Timonium, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Warranties offered

"Great and Professional Service. Loved the new Carrier Heater that was installed"
Ins
Ins
Response time10 hrs
164 neighbors recently requested a quote
Recommended by16%of homeowners
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Avatar for Blue Dot
Blue Dot
4.1(
345
)
Central A/C - Service or RepairCentral A/C - Install

Serving Timonium, MD and surrounding areas

Approved (Corporate)

In business since 1982

Free estimates

Emergency services offered

"I purchased the Annual Maintenance Plan for my Heating & Air Conditioning systems. Blue Dot has excellent customer service. Adrian serviced my heating system yesterday and he was great!!"
System Installation
531 neighbors recently requested a quote
Recommended by72%of homeowners
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Showing 1-10 of 388
Air Conditioning questions, answered by experts

There are a few ways to determine if a vent is open or closed. You can inspect the vent and examine the position of the fins. If there are spaces between them, the vent is open. If the fins are flat and touching, the vent is closed. You can also stand under the vent when the system is running to see if you feel air flowing through it.

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

It’s normal to hear a low humming sound as air moves through your vents. Most of the time, you probably won’t even notice it. However, if that sound becomes disruptive or if you hear more concerning noises (such as rattling, clicking, banging, hissing, or grinding), there might be a problem with your HVAC system.

Running an air conditioner with mold is not safe because it can spread harmful mold spores throughout your home. Exposure to these spores can trigger various health problems, including respiratory issues, allergies, coughing, wheezing, sneezing, itchy eyes, and a sore throat. It may also aggravate asthma in household members. Continued exposure can increase the risk of more serious illnesses like sinus infections, pneumonia, and bronchitis. If you suspect mold in your air conditioner, you should stop using the system until it has been properly cleaned to avoid health risks and further contamination.

When deciding whether to repair or replace your air conditioner, several factors should be considered. It is generally worth repairing the unit if it's less than 10 years old, the warranty is still active, and you're dealing with a one-off issue. Most central AC units last about 15 years, while window units last 8 to 10 years. If your unit is approaching or has surpassed the 10-year mark and requires frequent or costly repairs (e.g., over $5,000), replacement is often the more sensible long-term investment. For older, inefficient, or out-of-warranty units experiencing multiple problems, replacing it is typically the better choice.

The Timonium, MD homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

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