Germantown, MD Air Conditioning, Heating and Plumbing Services

Supreme Service Today 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 Service Today.

Local Reviews
for Germantown, MD

Supreme Service Today Rated 5.0 out of 5 stars based on 6 customer reviews

Map of Germantown, MD

Great Service Experience




Review of Supreme Service Today

Technician was thorough and efficient.


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.


nikolayn@supremeservicetoday.com

nikolayn@supremeservicetoday.com

Up on arrival for performed winter maintenance on 01/21/2020. Changed all air filters, checked thermostat for operation, checked systems for operation. Checked all electrical components. Took readings of delta T, Delta P. Found low voltage absorption rated 80uf +-5% actual readings 12.6uf . Customer payed half of 323.85$ collecting other up on install .

Near Blunt Rd, Germantown, MD 20876
marcm@supremeservicetoday.com

marcm@supremeservicetoday.com

After further inspection on leak in ceiling found no leaks and ceiling dry as a bone. The only thing I can think of for the problem is the young girls of the tenants might be getting water onto the floor when they take baths and it’s coming down hitting the ceiling. Found no leaks on drain pipes not even coming from the flange/wax ring.

Near Winding Brook Ln, Germantown, MD 20876
chrisa@supremeservicetoday.com

chrisa@supremeservicetoday.com

I replaced the air coil in the attic and the txv at the air coil. I did not have to replace the filter drier because I closed the service valves on the cube and only opened the lineset up from the cube to the attic. I then pressurized with 350psi of dry nitrogen and let it hold for 10-15 minutes. I then pulled system into a <500 micron vacuum and charged the unit with 10 degrees subcooling and recorded 67 eat 93 lat, which is 25 degrees temperature rise across the air coil. Refrigerant pressures and numbers matched WF printed data sheet. Unit operating normal.

Near Davis Mill Rd, Germantown, MD 20876
marcm@supremeservicetoday.com

marcm@supremeservicetoday.com

Open up ceiling to find out which drain or just the one drain for laundry and bathroom. Most likely connected together since there back to back to each in different rooms. Once I cut into ceiling I can give a better estimate on what needs to be repaired. Customer pre-paid for me to cut into ceiling and diagnose the drain issue in ceiling.

Near Winding Brook Ln, Germantown, MD 20876
chrisa@supremeservicetoday.com

chrisa@supremeservicetoday.com

I found unit #2 low on refrigerant and performed electronic leak search and found leak in air coil in the attic. As a courtesy I charged the system until the air coil can be ordered and delivered from WF. I completed a parts order form and a customer follow up form. $891.95 collected today and $891.95 due upon the completion of the work.

Near Davis Mill Rd, Germantown, MD 20876
colint@supremeservicetoday.com

colint@supremeservicetoday.com

Performed pm on both geo systems. Main floor filter ok, customer provided top floor filter to replace. Flushed out both drains with brush and hot water. Inspected cleanliness of coils and blowers. Checked capacitors and contactors, tightened electrical connections. Ran aux heat. Measured amp draw and heat rise. Ran heat pumps on both stages. Measured amp draw of compressors, blowers, and loop pumps. Measured delta loop pressures and temps. Measured delta air temps. Put gauges on top floor system and checked charge because refrigerant repairs were made this year and system had leaks previously. Refrigerant charge good, pressure holding. Loop pressure normal as well. Both units operating normal at this time.

Near Blue Banner Pl, Germantown, MD 20876
Joseph.Wade@supremeairllc.com

Joseph.Wade@supremeairllc.com

I replaced the door board in the package geo unit. I next installed Blue Tube UV light in the supply trunk of the package unit and then went into the attic and installed a Blue Tube UV light in its supply as well. I secured all wiring and tested all equipment. Customer paid remaining balance indicated in the dispatch notes, $1283.75.

Near Davis Mill Rd, Germantown, MD 20876
Joseph.Wade@supremeairllc.com

Joseph.Wade@supremeairllc.com

Whole house duct cleaning

Near Cervantes Ave, Germantown, MD 20874
Joseph.Wade@supremeairllc.com

Joseph.Wade@supremeairllc.com

Unit is a packaged heat pump for condos. This unit has electrical systems that are all within specification. When I operated it on heating mode it only had 10 degrees temperature rise and very low suction pressure with high superheat. The unit is low on refrigerant. It has lost refrigerant through a leak. I went over leak search types and repair costs with the customer. If the leak is in the condenser coil then I do not see a way to replace it. I explained all this to the customer. I set the thermostat to emergency/ auxiliary heat for the time being. Unit is not operating normal. I mentioned the service membership to the customer as well and the importance of taking care of this problem. Customer not prepared to make any decisions right now.

Near St Peter Ct, Germantown, MD 20874
Joseph.Wade@supremeairllc.com

Joseph.Wade@supremeairllc.com

Customer prefers the repairs to be made at one time. Customer is not upset at all. I am closing this dispatch with no invoice information because I did not go to the job site and no repairs were made. I called the customer prior to dispatching to the call and that’s when they expressed the preference to have the Uv lights and circuit board installed at one time.

Near Davis Mill Rd, Germantown, MD 20876
Joseph.Wade@supremeairllc.com

Joseph.Wade@supremeairllc.com

Fall Pm On 11/15/19 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 air filter and replaced checked compressor capacitor checked coil checked blower motor checked EWP and LWP checked water temp checked all other electrical connections tested unit operating normal at this time. Highly recommended Duct cleaning also UV lights installation and single or hole house surge protector to avoid future problems.

Near Blunt Rd, Germantown, MD 20876
Christopher A.

Christopher A.

I replaced the air filters with ones provided by the customer. I pressurized the 2 ground loops. I checked the electrical wiring and electrical systems, including auxiliary heat strips. All are within specification except the voltage absorption system for unit #2, which was subsequently replaced. I operated the units on second stage heating mode and recorded 25-30 degrees temperature rise across the air coils for each unit and normal flow rates and heats of extraction. 4 of 4 units are operating normal and up to specification. Customer to consider adding EZ Trap to unit #3 and to having ducts cleaned once renovation is fully completed.

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

Joseph.Wade@supremeairllc.com

Fall Pm on 10/22/19 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 defrost board workin on outdoor heat pump unit. Condenser fan stop running when I called operating normal at this time. Recommended install surge protection for both Units.

Near Cervantes Ave, Germantown, MD 20874
Yonas M.

Yonas M.

Fall pm on 10/04/19 On arrival set units to call for heat measured supply and return air temp measured voltage and amps inspected electrical connections checked drain and cleaned checked air filter and replaced checked water temp checked EWP and LWP it was low pump it back up to 57/50 psi checked compressor capacitor checked coil checked blower motor checked all other electrical connections units tested units operating normal at this time. Recommended Duct cleaning also Uv lights installation for unit #1 circuit board is s gates bad the ld lights is not on I call water furnace they told me the bord is gates bad also they gave me case number #513803 I recommended to replace it to avoid future problems I gave quote for customer he got special discount by Alex customer approved the quote after the duct cleaned we have to come back to install Uv lights and circuit board. The job total$ 2281.75 collected $500 job deposit on C.C on file. MOTHER BOARD REPAIR FOR UNIT #1 DUCT CLEANING FOR 2 U

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

Yonas M.

Fall pm on 10/04/19 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 air filter cleaned checked EWP and LWP checked water temp checked blower motor checked coil checked all other electrical connections inside the unit tested unit operating normal at this time. Recommended UV lights also single or hole house surge protector and Ez trap or wet switch to avoid future problems.

Near Larkspur Ct, Germantown, MD 20874
Colin T.

Colin T.

Upon arrival I found top floor system not keeping up. Customer also explained that water is sitting inside of drain pan, not sure if that’s normal. Found evap coil partially frozen, shut off ac and ran fan only to thaw. While coil was thawing I found Evap coil drain pan outlet needed to be clamped to floor in order to create better pitch, did so and pan is emptying normally. Once coil was thawed I put gauges on system and found low charge. Multiple repairs done recently so I checked near evap coil. Found leak right before txv. Pumped refrigerant down into condenser and repaired piping by adding more brazen, didn’t need to remake joint. Pressurized with 400psi nitrogen and held, checked for additional leaks and didn’t find any. Vacuumed system down to 500micron and held. Vacuum held. Added noted charge and checked operation of unit. System operating normal at this time with 22 degree delta at Evap coil. Used tape to seal doors and used insulation around sensing bulb and suction li

Near Blue Banner Pl, Germantown, MD 20876
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
Colin T.

Colin T.

Warranty per Alex. Upon arrival customer showed me to units and flow center. Started by tracing all loop piping and checked for leaks, none found. Can see evidence of previous leaks but nothing indoors is currently leaking. Static loop pressure at about 23psi. Connected water meter from bottom of buffer tank to flow center (out). Water Meter before purging at 293.69 gallons. After purging and equalizing pressure at 293.85 gallons. Static water pressure at about 56psi. Showed customer water meter setup and explained how it works and how to read the meter. They may document how much water has been added, I left the box with the original value if they would like to do so.

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

Christopher A.

I operated the unit on cooling mode #9 and set the flow rate to 9gpm by setting the pressure drop to 2.5psi. I cleaned the condensate pan and drain line and ran hot water to flush it out and to make sure it drained properly without leaks and that the condensate pump was working. I checked the electrical wiring and electrical systems, all are within specification. Filter is in good shape. I pressurized the ground loop to 65psi. I reset blower speeds from 5,5,10,11 to 3,3,10,11. I turned dehumidication on from the thermostat and explained all of this to the customer. Unit operating normal. I recommended adding a Blue Tube UV lamp but customer was not interested. I also recommended installing a whole house surge protector to the main panel box to protect the equipment. Customer asked for an estimate and would like to have this done next maintenance.

Near Larkspur Ct, Germantown, MD 20874
michaelr@supremeairllc.com

michaelr@supremeairllc.com

Replaced kitchen faucet with single handle faucet with pull out sprayer , adjusted price to also replace cold side angle stop customer unable to pay full amount after approval of valve as well stopped and gave estimate to replace both valves under kitchen sink also showed customer how to turn up heat on water heater customer responsible if turned up past scalding balance is being *paid by cash* $505.00 - $100 off Angie list coupon

Near Crusader Way, Germantown, MD 20874
Youssef  D.

Youssef D.

On arrival found fp1 at 30 degrees ,changed it to 15 degrees .unit back on normal

Near Larkspur Ct, Germantown, MD 20874
Youssef  D.

Youssef D.

On arrival found defective condensate pump .changed it ,unit operating normal

Near Sumac Ct, Germantown, MD 20874
Youssef  D.

Youssef D.

On arrival found system operating normal,found system had locked out on fp1 ,found fp1 was set to 30 ,reduced it to 15 .customer bought a membership.unit operating normal

Near Summer Oak Dr, Germantown, MD 20874
Christopher A.

Christopher A.

Customer complaint that on both thermostats the back light would not come on and would not turn off the unit. I checked inputs from each thermostat at the zone board and they are normal. The back lights were lighting up now. It’s difficult because the unit was operating normal from the zone stats and the zone board. Without being able to see the problem I cannot condemn the thermostat or zone board. I checked temperature rise on the unit and heat of extraction and it’s within specification. Maybe it was an anomaly. I put an estimate in the system for replacing one or both thermostats.

Near Blunt Rd, Germantown, MD 20876
Daniel M.

Daniel M.

Replace freeze protection sensor and checked operations.

Near Cervantes Ave, Germantown, MD 20874
Colin T.

Colin T.

Upon arrival I spoke with Bryan from Magnolia/Best Buy as he was the salesman for this automation system. He gave me thermostats and informed me that customer was unavailable because he was working and had conference calls. Contact then showed me to all thermostats. Started by replacing all Honeywell 8000 thermostats with smart Savant thermostats. Shut down power to all units. Removed old thermostats. Cleaned wire connections. Installed new thermostats. Returned power to systems. Thermstats now reading “Please Configure this Device”. Cannot confirm operation because Magnolia/Best Buy is not finished and they are programming thermostats. We did not supply these thermostats so we are not liable for warranty purposes. Also could not collect from customer because he was unavailable.

Near Finegan Farm Dr, Germantown, MD 20874