Networx Pro

Long Engineering

Services: Heating & Cooling

Description: Washington, DC Heating, Cooling And Solar Energy

Washington Metropolitan Area

Long Engineering

Looking to go green so you can save some green? Well look no further then Long Engineering - we are the premiere full green HVAC and solar service company in the Greater Washington - Baltimore region.

Installation and repairs for all brands and models
No matter what type of heating or cooling unit you have - boiler, furnace, heat-pumps or air conditioning system - you will receive the best green technology and energy management systems.

Let Long Engineering reduce your energy cost

Heating - Keeping your family or business nice and warm during the cool months
Cooling - Reduce your carbon footprint with energy efficient units
Commercial Refrigeration - Cost efficient retrofits for the life cycle of your unit
Energy Audits and Green Technology - Save energy, save money, save the environment and go green

Offering you the finest brands in solar, heating and air conditioning
No matter if you want to improve your indoor air quality or reduce your energy usage and energy cost - Long Engineering is here for commercial, industrial and residential customer.

Give Long Engineering a call today at 202-657-7978 or 240-508-0939 to schedule your appointment.

Service Area: Mount Rainier, Rockville, Gaithersburg, Kensington, Spencerville, Gwynn Oak, Simpsonville, Brooklyn, Riverdale Park, Randallstown, Pasadena, Laurel, Galesville, Glenwood, Annapolis, Lisbon, Elkridge, Garrett Park, Washington Grove, Savage, Andrews Air Force Base, Curtis Bay, Davidsonville, Dundalk, Fort Meade, Dayton, Churchton, Gibson Island, Columbia, Southern Md Facility

See More

21 Reviews

Review Me

Overall

Work Description: Central A/C - Repair/Service

Comments: I was very pleased with the service I received from Long Engineering. The technician displayed knowledge and promptness in handling the service call. His recommendations explained with clarity and integrity. I was more than pleased with the service call. I will highly recommend the company to all my friends and family.

Overall

Work Description: Central A/C - Repair/Service

Comments: He's very knowledgeable and professional. I'm very pleased with his work!

Overall

Quality

Price

Punctuality

Work Description: Handyman

Comments: I've never experienced anything this bad. The most arrogant owner( John Long). Switch and bait ($800 to install a doorbell,$1000 to install a dryer vent).

Could not install 2 door knob, Installed a porch light and the fixture was to low to be able to open the door. Damien said he would be back yesterday. A no show. I called him and left a VM. Nothing.
Awful experience.

Overall

Quality

Price

Punctuality

Work Description: Furnace/Heating System - Repair/Service

Comments: Very nice man, job may have been a bit more than he expected, took three days to complete, up and running well and looks professionally done

Overall

Work Description: Furnace/Heating System - Repair/Service

Comments: I am very satisfied with the services provided and would be happy to recommend

Overall

Quality

Price

Punctuality

Work Description: Furnace/Heating System - Repair/Service

Comments: I am very pleased with the service i received

Overall

Quality

Price

Punctuality

Work Description: Hvac malfunction

Comments: My heat wasnt working on the top floor of my house. No air. I called john and he came over to take a look. After an hour of diagnosing he said the motherboard was bad. He came back a week later and replaced the mother board. Still no air on top floor of my house. His response was dont worry, the heat will level off in a day and your system is designed incorrectly. After a week of it still not working, i gave up and called tnt hvac. Vincent came over and within 20 minutes he determined it was a malfunctioning flapper valve to the upstairs. He came back a few days later and replaced the flapper valve for a quarter of the price john charged me to replace a workkng part. My heat works fine on the top floor now. I do not recommend john unless youre rich and want to donate time and money to him.
Eric's first complaint was that his unit was working like it had a mind of its own. I checked the motherboard. It was visibly bad. The silicone had blistered. I changed out the board, checked operation with owner had no complaints at this time. He called me back the next day I showed him that his thermostats were working The upstairs thermostat was set at 72 and it was 72degrees. There is no flapper.Flappers are in toilets.

Overall

Work Description: Gas Furnace - Repair

Comments: Did a good job and provided a timely estimate.

Overall

Work Description: Furnace/Heating System - Repair/Service

Comments: John was very punctual and gave a good course of action for the problem at hand.

Overall

Quality

Price

Punctuality

Work Description: Furnace/Heating System - Repair/Service

Overall

Quality

Price

Punctuality

Work Description: Thermostat - Install/Replace

Overall

Quality

Price

Punctuality

Work Description: Central A/C - Repair/Service

Comments: i could not have found anyone better; excellent job.

Overall

Quality

Price

Punctuality

Work Description: Central A/C - Repair/Service

Overall

Work Description: Heat Pump Repair

Comments: The technician ordered the part and due to install within the next day or two

Overall

Quality

Price

Punctuality

Work Description: Central A/C - Repair/Service

Comments: Awesome job! Reliable and professional. Mr. John and his assistant did a great job repairing my AC unit. No doubt that will hire them in the future.

Overall

Quality

Price

Punctuality

Work Description: Central A/C - Repair/Service

Comments: Mr. Long was very professional and honest. I found him very knowledgeable, customer oriented, posses excellent trouble shooting skills, provided options to choose from which is very rare in this filed, affordable and save me a lots of money. His help is highly appreciated and I will definitely refer him to my neighbors.

Thanks
Mafiz Chowdhury

Overall

Quality

Price

Punctuality

Work Description: Central A/C - Repair/Service

Comments: Mr. John and his assistant showed up late. They said they were going to return the next day, and I didn’t hear from them. I had to call them, and Mr. John said ‘he’ was glad I called him, no explanation for why he didn’t show up when he said he was returning.
The following day , he agreed to return, however, he didn’t provide a time or window,.
Mr. John is a nice man, however communication and punctuality is not his strong suit.

Overall

Quality

Price

Punctuality

Work Description: Central A/C - Repair/Service

Comments: Solve issue in a timely manner.

Overall

Quality

Price

Punctuality

Work Description: Central A/C - Repair/Service

Comments: He was a bit behind schedule getting here, but once on the site he took care of business efficiently. The acid test will be whether the units work properly once they are reconnected after the roof replacement.

Overall

Quality

Price

Punctuality

Work Description: Central A/C - Repair/Service

Comments: No issues. Tech was honest and didn't try to upsell. I'm happy.

Overall

Quality

Price

Punctuality

Work Description: Serviced commercial ac unit.

Comments: Excellent work. Would recommend
Get Free Quotes
  • Zip Code
Get quotes from qualified local contractors
  • Share
  • Website
  • HVAC/R License in MD :
    #9724
  • Financing Options
    Maintaining Distance
    No-contact Payments
    Protective Gear Used
    Trip Charge