Angie's List is now Angi. Learn more

Find top-rated Pros in your area

Enter a zip code and get matched to businesses near you.


Founded 2000 • With Angi since October 2012


(3) Verified Reviews

Business Highlights

Emergency Services OfferedEmergency Services Offered


We all forms of payment including financing....

Other local Pros in your area

Buric Heating and Air Conditioning

**Call us today for a FREE ESTIMATE on Heating or AC system replacements!** With over 19 years of experience, Buric Heating and Air Conditioning is a full service residential heating and cooling company that has offered Ellicott City, MD and its surrounding areas with plenty of jobs well done. By offering straight forward pricing and free estimates on equipment installations or replacements, you can trust that they are the right HVAC professionals for you. Call today for your next appointment!  

Mannix Heating & Cooling

Mannix Heating and Cooling is a full service HVAC contractor with a location in Chantilly VA and Gaithersburg MD to serve you. We offer an extensive array of services designed to keep your heating and cooling equipment operating at peak efficiency through many years of reliable operation. We also provide water heater replacement, standby home generators and electrical panel replacements. For more information, please email  

Angi Super Service Award badge
Super Service
Award 2020
Offers by Mannix Heating & Cooling on Angi
Glenmont Heating & A/C

When Glenmont Heating & Air Conditioning was founded 28 years ago, we had one goal in mind; providing area families, and businesses with solutions that fit their lifestyles and needs, as well as their wallets. If you have any questions about heating and air conditioning maintenance, a new HVAC system, or are looking into installing a more energy efficient system, Glenmont Heating and Air is the solution to your needs.  

Verified Reviews

A few reviews for this pro...


Sergio De Jesus and his company Millenium HVAC are TOP NOTCH!!!! They completed all the labor within one day and I HIGHLY recommend him 1,000%%%!! He's the best and I've been using him for almost 20 years.

Description of Work
I needed a brand new water heater, air conditioning unit and heating unit.

Category heating & air conditioning/hvac



First of all they were highly recommended by a contractor friend. Never the less I had three different providers come and give me estimates. They were much more expensive and seemed much more complicated. Sergio came, was clearly very knowledgable and provided central air conditioning with the least destruction to my house. They stayed on schedule, cleaned up after themselves, and did excellent wo...

Description of Work
Sergio from Millenium installed central air conditioning in my house as well as a ductless unit in the attic.

Category heating & air conditioning/hvac



Owner and workers were courteous, knowlegable, prompt, thoroughly explained what the extensive installation process would entail, and very responsive to all my questions and concerns. The cost of the equipment/materials & labor was reasonable. I am extremely happy with my new centralized heat and air conditioning system. Thanks for an exceptionally well done job!

Description of Work
Purchased and installed new SpacePak Heat and Air Condtioner.

Category heating & air conditioning/hvac

    Services Offered

    New equipment installation (Frigidaire and Mitsubishi) and repair of all brands,

    Services Not Offered


    General Information
    Free Estimates
    Eco-Friendly Accreditations
    Payment Options
    Check, Visa, MasterCard, American Express, Discover, PayPal, Financing Available
    Emergency Service
    Ask for details