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Top-Rated Central a/c installers in Long-green - Updated Nov 2026

Avatar for No-Frost Air Conditioning & Heating, LLC
No-Frost Air Conditioning & Heating, LLC
4.7(
411
)
Central A/C - Install

Serving Long-green, MD and surrounding areas

Approved

In business since 1971

Free estimates

Warranties offered

"Amazing! These really know how to up the anti, regarding customer service. Where other folks quoted me at $300 for a look see (to include travel), charged me around $270 for everything. Now mind you, my hubby had already purchased the UV-C light and installed the electrical outlet. Even if he hadn't, I will still receiving estimates that were astronomical. No Frost followed up emails and phone calls. We were seen in a timely manner. There no hidden fees. I felt this company in being honest and I loved that Thank you note. No Frost - you guys Rock!"
Additional Photos
Additional Photos
Additional Photos
Response time9 hrs
Response rate100%
14 neighbors recently requested a quote
Avatar for Blue Dot
Blue Dot
4.1(
353
)
Central A/C - Install

Serving Long-green, MD and surrounding areas

Approved (Corporate)

In business since 1982

Free estimates

Emergency services offered

"They (2 workers) did an EXECCENT job installing gas heater and Central Air unit. They were very polite and professional. I could not convince them to take a coffee break. Answered all my question. I'm soo happy I chose Blue Dot !! Also the price was unmatch... Thanks !! PS... The Wife is back to calling me HONEY again :)"
System Installation
498 neighbors recently requested a quote
Recommended by70%of homeowners
HVAC Sales, LLC
5.0(
10
)
Central A/C - Install

Serving Long-green, MD and surrounding areas

Approved

In business since 1982

Warranties offered

Credit card accepted

"Excellent company to work with Very respectful of property with laying floor coverings during replacement of furance Guinn Hamilton the owner was great to deal with answered all questions and provided much more information about the product then any other vendor Rick the installer and his helper were very professional and explained everything we needed to know once the furance was installed They even installed a emergency cutoff switch near the furnace without charging us extra for a safety situation Overall this company made our purchase of the oil furance a pleasurable experience and you should give them a opportunity to provide you with an estimate You won't be disappointed"
Ductless system
Ductless spilt system
Ductless split system
Ductless split system
Heat Pump system

+6

Response time5 hrs
Response rate98%
Recommended by100%of homeowners
Avatar for BPPW Heating & Cooling
BPPW Heating & Cooling
4.3(
18
)
Central A/C - Install

Serving Long-green, MD and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Not only did Tyrone install both thermostats. But he saved me money. When you buy a smart thermostat there will be a notice stating a C-wire is required. Tyrone installed both of my smart thermostats without the use of a C-wire. So I was able to return them and get a refund. Both thermostats are working flawlessly! I highly recommend Tyrone if you live in the Baltimore area! Thanks again Tyrone!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
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+2

Response time6 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Innovative Air, LLC
Innovative Air, LLC
5.0(
4
)
Central A/C - Install

Serving Long-green, MD and surrounding areas

Approved

In business since 1998

Free estimates

Credit card accepted

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Garage ductless system
Garage ductless system
Roof top unit replacement
Trailer ductless
Trailer ductless

+6

Response time5 hrs
Response rate91%
2 neighbors recently requested a quote
Avatar for Smart Energy Systems, Inc.
Smart Energy Systems, Inc.
4.3(
13
)
Central A/C - Install

Serving Long-green, MD and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Kevin and his crew did a fantastic job I would highly recommend them I was spending a fortune on oil heating and he installed a carrier with a heat pump 3 ton I'm a happy man"
Response time8 hrs
Response rate100%
9 neighbors recently requested a quote
Avatar for Constellation Home
Constellation Home
4.3(
9
)
Central A/C - Install

Serving Long-green, MD and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"I actually had a hot water heater installed but that was not an option. I had a fantastic experience with constellation home. great service and friendly staff. Right from the start their customer service and salesperson Trent was exceptional. he went over and beyond to answer all of my questions and ensure that I had exactly what I needed and made the entire process so easy. The professionalism of their sales and installers are unmatched. Their service exceeded my expectations in terms of quality,price and installation. The installers of my hot water heater,Jordan Coleman and James Julia, were on time and explain the entire installation to me and answered all questions that I had. I would highly recommend CONSTELLATION HOME. thank you."
Constellation Home HVAC Technician
Constellation Home AC installation team
AC installation Day
AC Install
Constellation Home

+2

Response time2 hrs
Response rate91%
1 neighbors recently requested a quote
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