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Climate Pro Mechanical LLC
- Clean
- Knowledge
- Communication
“We contacted both our air conditioner service company and the local gas and electric company but the soonest either could replace the unit was over a week.”
Best HVAC Contractors in Ellicott City, MD
24 companies listed · 5 in Ellicott City · 7 open 24/7 · 17 open weekends · all 24 rated 4.5+
Data verified October 21, 2026
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Husky Home Services
- Informative
- Call
- Price
“He is super efficient and knowledgeable!!”
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Kingdom Comfort Heating & Cooling
- Diagnosed
- Expertise
- Price
“Also he reminded me the unit was still under warranty and was able to secure the replacement parts with a nearby distributor so we were back up and running in no time.”
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A C Tech LLC
“Siju Sebastian is a amazing person who did my Air condition repair and its works good my ac on and we feel very comfortable.”
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Heating & Air Conditioning
“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).”
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AMS Air Conditioning and Heating
- Winter
- Unit
- Efficient
“Moshe has been my HVAC go-to person for 20 years for this old house, His excellent work included a complete system replacement and upgrade 4 years ago.”
The 24 companies listed for Ellicott City, MD work on furnaces, heat pumps and air conditioners. Each profile repeats what the company publishes about its hours, its license and the equipment it fits, alongside ratings and quotes drawn from public reviews.
Area overview: Ellicott City, MD
Of the 24 companies we list here, 5 are in Ellicott City itself and 19 come from towns including Baltimore (7, 12 mi), Columbia (2, 5 mi) and Hanover (2, 10 mi). The companies on this page are rated from 4.5 to 5.0 across 4,794 reviews; 18 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (91%), responsiveness (88%) and quality (84%). 7 are open around the clock; 17 are open on Saturdays and 11 on Sundays. The services the companies on this page list most often on their websites are AC services (3), heat pumps (3), indoor air quality (3), AC installation (2) and AC maintenance (2). 10 show a license on their websites; 3 list staff certifications (NATE and EPA) and 13 have a BBB rating of A or A+. 17 have ten or more years of experience, the longest 89 years. 9 offer emergency call-outs; 14 offer financing or payment plans; 10 give free estimates; 9 are family- or locally-owned and 13 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Do any heating firms listed for Ellicott City work on Saturdays or Sundays?
Saturday or Sunday hours show up for 17 of the 24 companies here. Saturdays fill with the calls that came in on Friday, so ask whether you are getting a repair slot or a sales visit. Sunday work is usually treated as an emergency call.
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Chason Service Engineers Inc
- Unit
- Pump
- Service Plan
“They could have tried to upsell me to a Heating Unit as well but instead said I probably had a few good years left and serviced the Heating Unit at no additional cost.”
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Fresh Air Concepts
- Advice
- Work
- The Future
“He said that FAC did not employ pressure sales tactics, which gave us time to review the quote and evaluate the different tiers (Bronze, Silver, Gold, Platinum).”
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A.J. Michaels
- Understand
- Water Heater
- Estimate
“The sales person The sales person , Paul did an excellent job and the technicians were knowledgeable and hard working, and any follow up was done in a timely fashion.”
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Clarksville Heating & Air
- Season
- Heat Pump
- Tech
“They came out within a few hours and the technicians, Richard Gutierrez and Jaime Garcia, quickly diagnosed the issue, which was a rusted out integral component that required replacing the furnace.”
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ADI Heating & Air Conditioning
- Competitive
- Summer
- Job
“Also their prices are great - a couple years ago when we knew our system was on its way, we had gotten quotes from other companies that were much higher.”
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Abend Services
- Water Heater
- Morning
- Questions
“Dustin & Chase were awesome, upfront with the pricing, quick to get the job done, very polite & professional, respectful of my home, excellent communication.”
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Pipco Air Conditioning & Heating
- Thermostat
- Fair
- Clean
“Once I called we were able to schedule at my preferred date and then installation was completed as promised and the equipment has been running great for almost 2 years now!”
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Environmental Systems Associates
- Basement
- Humidifier
- Inspection
“James Carter was great!”
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Warthen Co
- Bill
- Furnace
- Home
“And most important they were here in 20 mins an I was able to pay the next day great customer service an Chad was of great customer service thanks to all of you very much .”
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Beltway Air Conditioning & Heating
- Responsive
- Efficient
- Tech
“Beltway HVAC came out and did a complimentary inspection of our system since they were taking over accounts from a company that was closing its Maryland locations.”
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Ackerman Heating & Air Conditioning
- Condo
- Heat Pump
- Work
“I've had another highly rated company come to my house in the past and had the technician tell me I need a replacement when he did not even check wiring to the outside unit.”
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Future Tech Heating & Cooling Co.
- Responsive
- Customer Experience
- Afternoon
“His prices are very reasonable and I'm so glad I called him and not one of the large companies who's main goal is to get the most money they can get from you.”
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Greenfox Cooling
- Estimate
- Diagnosed
- All American
“The owner of the company checked in multiple times regarding the status of the repair and ensured a high quality replacement water heater was installed as soon as possible.”
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Bay Area Mechanical Services Inc.
- Call
- Priced
- Furnace
“Every time they come over, they are very transparent and keep me updated with exactly what they are doing and if any issues arise and how they fixed it.”
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Tario Hvac
- Hvac System
- Mask
- Unit
“What compelled me to write this now (should have done it awhile ago) is that I reached out to Jose today to ask about a vent grille that a contractor had taken off and didn't want to fix.”
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Ron Air Heating & Air Conditioning
- Responsive
- Estimate
- Furnace
“I and my family have been fortunate to have Ron Air provide our HVAC service for over 25 years, and they have always given the best service you could imagine.”
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Supreme Service Today
- Explanation
- Check
- Work
“Our service representative Ryan K was extremely knowledgeable about the system, the financing and he found us a solution where other companies came up short.”
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Complete Climate Services
- Home
- Questions
- Future
“Mike came out and assessed our system and gave us a breakdown of the repair costs and options, and even came by to give us a window unit to hold us over until they could come out and repair our AC unit.”
Why these companies made our list
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