Germantown, MD Air Conditioning, Heating and Plumbing Services

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Germantown, MD Air Conditioning, Heating and Plumbing Services

Supreme Air provides Air Conditioning, Heating and Plumbing Services, Repair, Installation, Maintenance, and Tune Up in Germantown, MD and surrounding areas.

Check out what some of our customers are saying about Supreme Air.

Local Reviews
for Germantown, MD

Supreme Service Today Rated 5.0 out of 5 stars based on 5 customer reviews

Map of Germantown, MD

Very polite




Review of Supreme Service Today

He was late but in the window of time! Very polite! My house is a mess but he did not Say anything about my messy house!!


Map of Germantown, MD

Oustanding Service




Review of Supreme Service Today

Great experience and highly skilled technician like Yonas


Map of Germantown, MD

Always Prompt Attention to detail




Review of Supreme Service Today

I always welcome Yousseff to my home for any service/repair work required. He is always friendly, efficient and courteous!


Map of Germantown, MD

Great service!




Review of Supreme Service Today

Always prompt service appointment given. Always enjoy having Youssef at my home providing the service work. He is knowledgeable, polite and has great customer care presence.


Response from Supreme Service Today:

Thank you Tim and Carol, we truly appreciate the feedback you have provided us. Youssef really does care about our customers and wants to make sure he is providing them great service on every visit. We are so happy he took such great care of you and we can't wait to send him back out for your next HVAC need. Have a supreme day!


Map of Germantown, MD

Great response by Supreme Air to have someone at our home ASAP!




Review of Supreme Service Today

Timely, courteous, knowledgeable; for Chris Alexander!!!! Very personable.


Yonas M.

Yonas M.

Return visit to put new fun motor on arrival turn off the unit from mean breaker take out the old condenser fan motor out put the new fan motor checked compressor capacitor replaced the compressor capacitor also checked electrical connections checked voltage and amps measured pressure and temp and they are ideal indicating zero leaks measured supply and return air temp unit operating normal at this time. No payment collected Alex gave customer a discount $158.68

Near Falconcrest Rd, Germantown, MD 20874
Joseph.Wade@supremeairllc.com

Joseph.Wade@supremeairllc.com

Replace water heater tested no leaks found bad thermocouple on propain water heater replace tested all working properly

Near Finegan Farm Dr, Germantown, MD 20874
Youssef  D.

Youssef D.

On arrival found system low on refrigerant,found a leak at the equalizer line .brazed it. Tested it .vacummed system .recharged it .unit back on normal . Warrantied per alex

Near Blue Banner Pl, Germantown, MD 20876
Youssef  D.

Youssef D.

On arrival found leaking water heater.custmer bought new water heater (buffer tank) to be installed tomorrow.customer paid in full . Please make sure Drain pan included and dhw connected .

Near Finegan Farm Dr, Germantown, MD 20874
Joseph.Wade@supremeairllc.com

Joseph.Wade@supremeairllc.com

When I arrived I checked thermostat and saw error code 82 high pressure which was dirty condenser coil after cleaning the condenser coil‘s outdoor unit came on but not fan motor. capacitor was replaced on this past Friday by another technician. Customer says home was cooling after technician left. 12 midnight. Bad condenser fan motor. This unit was installed three years ago customer is not happy about parts failing one system is not that old Follow-up form has been filled out for first fall tuneup Customer bought membership for one year.

Near Falconcrest Rd, Germantown, MD 20874
Yonas M.

Yonas M.

Service call on 09/06/19 On arrival set the unit to call for cooling unit is running for 1 minuets and is turned off gave me error codes 82 high stage terminal locks out checked electrical connections checked voltage and amps checked voltage absorption system it was well below spec so I suggested replacing now to the unit operating also I suggested the additional hard start kit to ease all electrical strain on the compressor and other electrical device in outdoor unit. Customer accepted only to repair the compressor capacitor repair the dual run capacitor rewire tested start up and unit began operating very smoothly without any hesitating or lag checked electrical connections checked voltage and amps checked condenser coil measured pressure and temp and they are ideal indicating zero leaks measured subcooling and superheat measured supply and return air temp unit operating normal at this time. Collected $251.00 on C.C

Near Falconcrest Rd, Germantown, MD 20874
Yonas M.

Yonas M.

Fall pm on 09/06/19 On arrival set unit to call for heat measured supply and return air temp measured voltage and amps inspected electrical connections checked drain and cleaned checked filter and replaced checked water pressure and temp checked compressor capacitor checked all other electrical connections inside the furnace checked blower motor tested unit operating normal at this time.

Near Summer Oak Dr, Germantown, MD 20874
Youssef  D.

Youssef D.

On arrival found system low on charge,found a leak at the liquid line by the evap coil rebrazed the joint .tested it for leak .vaccummed system and recharged it .unit operating normal

Near Blue Banner Pl, Germantown, MD 20876
Youssef  D.

Youssef D.

Up on arrival found system low on charge, performed leak search found service valve was leaking. Replaced service valve, pulled vacuum, recharged system. Tested it unit operating normal

Near Finegan Farm Dr, Germantown, MD 20874
Colin T.

Colin T.

Upon arrival we found attic system for master bedroom emergency pan was full of water, system still running. During diagnostics we removed all water from pan then opened up panels. Found debri blocking drain outlet to pvc, we also found a lot of debri in pan, causing added condensation underneath system, dripping into pan. Cleaned out inside of drain pan and then cleaned out emergency pan. Vacuumed out debri then wiped down with towels. Tested drain with new water then blew out with nitrogen. Poured more water down to test then returned power and ran ac. Checked operation and unit is operating normal. Customer also asked us to check other attic system for workout area and we found it to be clean and has a normal delta.

Near Finegan Farm Dr, Germantown, MD 20874
Christopher A.

Christopher A.

I started out by adding some refrigerant and leak searching the evaporator coil and found no leaks or traces of oil residue. I found the leak coming from the liquid line service valve stem which I fixed and then charged the system to operating specification and had 20 degree delta temperatures across the evaporator coil. Unit operating normal. Customer already paid half of the repair. I took a photo of the receipt they had printed. The repair has been paid in full.

Near Finegan Farm Dr, Germantown, MD 20874
Youssef  D.

Youssef D.

Upon arrival inspected upstairs unit, found blower fan running and filter recently changed. Reinsulated txv sensing bulb to check system operation during normal operation. Found pressures low for both high and low side. System operating with 125 head pressure and 50 psi head pressure. Diagnosed as low on charge, recommend leak search and repair, customer approved repairs.

Near Finegan Farm Dr, Germantown, MD 20874
Youssef  D.

Youssef D.

On arrival Recovered 13.25 oz from system. Removed evaporator coil, condensate pan, filter drier, and capacitor from system. Replaced with new evaporator coil, condensate pan, filter drier, and capacitor. Pressurized system with 350 psi of nitrogen, preformed leak check on repairs and no leaks. Nitrogen pressure held for 25 minutes. Vacuumed system down to 320 microns, turned off pump and vacuum held for additional 25 minutes. Charged with 78 oz of r-410a (factory charge) and started system. System operating with 275 head pressure and 125 suction pressure as well as 74.5 return air temp and 51.2 supply air temp. System operating to spec.

Near Finegan Farm Dr, Germantown, MD 20874
Christopher A.

Christopher A.

One of the upstairs air handlers SN# 110302256 was frozen up and needs to thaw before the reason can be diagnosed. I freed up the sensing bulb for easier testing. I had customer turn the unit off. Customer will be out of town but says workers will be here. The other 2 systems are operating normal. Customer signed but did not pay the $59 dispatch fee.

Near Finegan Farm Dr, Germantown, MD 20874
Youssef  D.

Youssef D.

On arrival found system locked on low pressure.found system running on low pressure .found evap coil leaking .need to replace evap coil also found cap under manufacturer specs also filter is dirty and also recommended duct cleaning after construction is done . Could not get hold of customer!!!

Near Finegan Farm Dr, Germantown, MD 20874
ALEX K.

ALEX K.

Replace Coil

Near Blue Banner Pl, Germantown, MD 20876
Christopher A.

Christopher A.

Unit #2 was very low on refrigerant charge and the coil was freezing up causing excess water to get blown out of the pan by the blower. Unit was only cooling with 6-8 degrees. I isolated txv bulb to make sure it was operating properly and then performed electronic leak search. Leak detector picked up a leak just in the attic air alone and narrowed it to a place on the bottom row of tubing towards the blower side, in the middle of the coil. It cannot be repaired and the coil has to be replaced. Customer approved the repair. I completed a parts order form. I did charge the system so that it is operating in the meantime. Customer signed up for service membership for two geo units. I was unable to perform the maintenance today and the customer would like it if they could be done when the coil is replaced?

Near Blue Banner Pl, Germantown, MD 20876
Youssef  D.

Youssef D.

On arrival set thermostat to call for cooling. Measured return temperature, supply temperature, amps, and voltage. Measured EWP,LWP,EWT, and LWT. Inspected electrical connections, contactor, replaced filter provided by customer, blower wheel is clean, evaporator coil is clean, pressurized system to 65psi, cleaned condensate drain line as well as condensate drain pan. Unit is operating normal at this time.

Near Blunt Rd, Germantown, MD 20876
Youssef  D.

Youssef D.

On arrival flipped the uv light upside down.unit running normal

Near Blunt Rd, Germantown, MD 20876
Youssef  D.

Youssef D.

installed (1) Apco UV light.tested it ,unit operating normal

Near Blunt Rd, Germantown, MD 20876
michaelr@supremeairllc.com

michaelr@supremeairllc.com

On arrival checked thermostats were calling for cooling. Measure return and supply temperature, EWT,LWT,EWP,LWP, measured amps, voltage, inspected electrical connections, contactor, capacitor, blower motor wheel is clean, evaporator coil is clean,replaced both filters provided by customer. units are operating normal at this time.

Near Blunt Rd, Germantown, MD 20876
Christopher A.

Christopher A.

I replaced the units filters with ones provided by the customer. I cleaned the condensate pans and drain lines. I pressurized the ground loops to 65 psi. I confirmed proper flow rate and heat of rejection for each unit. I checked the electrical wiring and electrical systems, all are within specification. Recommended Intellistart module be added to each unit to help protect the compressors. Customer will consider. I had 20+ degree delta temperatures across the evaporator coils. Both unit are operating normal. I also recommended adding EZ Trap to the attic unit. The unit has a pan switch but if the drain backs up the EZ Trap will turn the unit before the pan and unit get flooded and possibly the ceiling below them.

Near Davis Mill Rd, Germantown, MD 20876
Yonas M.

Yonas M.

Spring Pm on 03/28/19 On arrival set units to call for cooling measured supply and return air temp measured voltage and amps inspected electrical connections checked drain and cleaned checked filters and replaced checked EWP and LWP units tested units operating normal at this time. Recommended install Uv lights for both Units.

Near Cervantes Ave, Germantown, MD 20874
Yonas M.

Yonas M.

GEO water furnace spring Pm Darnestown Md

Near Cervantes Ave, Germantown, MD 20874
Germantown, MD - GEO water furnace spring Pm Darnestown Md
Colin T.

Colin T.

Upon arrival I found Check Valve Backflow Preventer on Water Feeder had failed. Replaced with new and verified no water feeding back into water heater. Bled all contaminated water out of water heaters. Took water sample of loop so we can make sure that wasn’t contaminated as well. Water Meter now reading 296.115 gallons after repair.

Near Blue Banner Pl, Germantown, MD 20876