Bethesda, MD Air Conditioning, Heating and Plumbing Services

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Bethesda, MD Air Conditioning, Heating and Plumbing Services

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

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

Local Reviews
for Bethesda, MD

Supreme Service Today Rated 5.0 out of 5 stars based on 4 customer reviews

Map of Bethesda, MD

Great service




Review of Supreme Service Today

Easy and efficient


Map of Bethesda, MD

Great Customer Service




Review of Supreme Service Today

I really appreciated the personal response over the weekend and scheduling an early visit and a call when on his way. Great customer service.


Map of Bethesda, MD

Quick response. Efficient




Review of Supreme Service Today


Map of Bethesda, MD

Great Service, Arrived on time and did great work




Review of Supreme Service Today

Really pleased. They showed up on time and did a very nice job!


Response from Supreme Service Today:

Michael thank you very much for the great review! We are thrilled to hear you had such a positive experience with Supreme Air. We look forward to assisting you in the future! Have a Supreme day!


Christopher A.

Christopher A.

Upon my arrival I found the drain line was full of water and water was sitting in the evaporator coil drain pan as well. I surmised it had to be very clogged in the homemade u trap. I spoke with service manager and the customer about installing an EZ Trap condensate assembly with built in safety device. By installing this I could cut out the old trap and replace with EZ Trap. I cut old trap out and it was clogged like plaque in arteries. I installed EZ Trap and wired it in. I poured lots of water through the pan to make sure it drained from there with no leaks. I showed the customer how to use the brush. Unit operating normal.

Near Custer Rd, Bethesda, MD 20814
Colin T.

Colin T.

Upon arrival I found both systems locked out on water flow. Checked water filter for loop and found it to be mostly black and clogged. Hooked up hose and bucket to port and flushed out filter. Debri from pipes came out as well. Purged each unit as well. Returned power to units and ran ac. Measured deltas and checked operation. Both units operating normal. Warranty to PM per Alex, called Darlene and asked her to put a permanent note in for us to clear filter every pm.

Near MD-190, Bethesda, MD 20817
Yonas M.

Yonas M.

Service call on 08/26/19 on arrival set units to call for cooling measured supply and return air temp measured voltage and amps inspected electrical connections checked drain checked outdoor condenser unit checked electrical connections checked voltage and amps checked compressor capacitor measured pressure and temp measured subcooling and superheat unit operating normal I see water but the water is not coming out from the unit from the condenser drain line I was explained to the customer customer needs rerun the drain line near to the fence I gave quote for customer accepted rerun the drain line and tested with water water running out normal unit operating normal at this time Collected $425 to rerun the drain line and tested dispatch fee waved total $425 on C.C Rerouted the condenser drain pipe tested

Near Gloster Rd, Bethesda, MD 20816
Christopher A.

Christopher A.

Upon my arrival I pressurized the ground loop to 65 psi. I then checked the electrical wiring and electrical systems, all are within specification. I checked the air filters for each unit and they are not ready to be replaced. By winter they should be replaced. Coils and blower wheels are clean. I cleaned the condensate pans and drain lines and ran hot water to flush the debris and to check for any leaks and for proper drainage. I operated each unit on second stage cooling mode and checked pressure drops and heat of rejection and cooling across the evaporator coils. Both units are operating normal. Unit #1 has an Intellistart Module already installed. I recommend adding one to unit #2.

Near Moorland Ln, Bethesda, MD 20814
Youssef  D.

Youssef D.

On arrival found system operating normal,found unit is leaking at the male adapter where it connects to drain pan .replaced male adopter and tested drain .no leak .tested fan ,checked pressures .unit operating normal

Near Custer Rd, Bethesda, MD 20814
Yonas M.

Yonas M.

Service call on 06/21/19 On arrival set unit to call for cooling checked electrical connections checked voltage and amps measured supply and return air temp checked air filter checked condenser drain checked out door unit checked electrical connections checked voltage and amps checked compressor capacitor checked pressure and temp is ideal indicating zero leaks customer explained to me the old filter when his change it was bad on that time the line set got freezing up bc the filter is bad that was the problem I checked the filter is cleaned check all other electrical connections also subcooling unit operating normal at this time I was stayed for 30 minutes unit running with out any problems Collected $50 trip fee and $98.60diagnostic fee total $147.74 on check #4116 also highly recommended duct cleaning I gave quote for customer he is going out for 1 week when his comes back he will call us to schedule for duct cleaning.

Near Custer Rd, Bethesda, MD 20814
Youssef  D.

Youssef D.

On arriva found attic unit has a clogged drain ,cleaned it .also checked system pressure and found it low on refrigerant.customer preferred to add freon instead of leak search .i added 1 lbs of 410a ,system is operating Normal at this time .unit is 13 years old and could have other problems in the future .recommended replacement.

Near Eagle Ridge Dr, Bethesda, MD 20817
Colin T.

Colin T.

Upon arrival I was told multiple repairs were made on system in the past few weeks and unit is still not cooling. During diagnostics I checked AHU and found no problems. Called for ac and put gauges on to find 150psi suction and 500psi discharge, almost 0degree Superheat and very high subcooling. Removed some refrigerant from system to bring pressures down to 123psi suction 230psi discharge, 12 degree Superheat, 9 degree subcool, 21 degree delta air temp. Unit operating normal at this time. System was overcharged and going off on high pressure.

Near MD-190, Bethesda, MD 20817
Christopher A.

Christopher A.

I found unit not cooling with 12-14 degrees. I applied my refrigerant gauges and pressures were low. I isolated the txv sensing bulb to test and rule it out. I then performed electronic leak search and found leaking valve stems. I tightened all valve stems put caps with rubber inside of them and added 2lb 8oz of refrigerant to achieve 10-12 degrees subcooling, 20+ degree delta temperatures across the evaporator coil and normal refrigerant pressures. Unit operating normal.

Near MD-190, Bethesda, MD 20817
Yonas M.

Yonas M.

Spring Pm On 05/22/19 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 filter unit air filter needs to be replaced on time checked condenser units outdoor checked electrical connections checked voltage and amps checked compressor capacitor checked pressure and temp checked all other electrical connections units tested units operating normal at this time.

Near Eagle Ridge Dr, Bethesda, MD 20817
roberts@supremeairllc.com

roberts@supremeairllc.com

Trip fee Clean out ez trap on hvac

Near MD-190, Bethesda, MD 20817
Christopher A.

Christopher A.

I operated both units on heating and cooling mode. Unit #1 is a gas furnace with air conditioning. Unit #2 is a heat pump. I checked the electrical wiring and electrical systems, all were within specification except for the blower motors voltage absorption system for unit #1, which was replaced. I had normal temperature rise for gas heating, #1. Unit #2 had normal heating and I tested the auxiliary heat strips as well. I replaced the Aprilaire #213 filter in the attic for unit #2 and installed an Aprilaire upgrade kit #413 in unit #1. Both 7 it’s in cooling mode had 20+ degree delta temperatures across the evaporator coils. Coils, indoors and outdoors are clean alas well as the blower wheels. Refrigerant pressures were normal for both units. Unit #1 uses r22 refrigerant and unit #2 uses r410a refrigerant. At this time there are no apparent refrigerant issues. I ran water through the drains and both drained properly. There is a pan switch in the attic. Both units are operating normal.

Near Herb Farm Dr, Bethesda, MD 20817
ALEX K.

ALEX K.

Invoice created to clear up AR

Near Moorland Ln, Bethesda, MD 20814
Christopher A.

Christopher A.

I cleaned the condensate pan and drain lines and ran hot water to flush the debris and to make sure it drained properly and that the condensate pump was ejecting the water. I checked the electrical wiring and electrical systems, all are within specification. I operated the unit on second stage cooling mode and recorded 20+ degree delta temperatures across the evaporator coil. Installed Aprilaire Upgrade Kit with Filter #413. Unit operating normal.

Near Newington Rd, Bethesda, MD 20816
Colin T.

Colin T.

Upon arrival I went to system and found loop pressure reading 2psi static. Shut off units and installed Automatic Water Valve. Installed water valve between buffer tank and loop, connecting hose to exiting side of flow center. Routed hoses behind water pipes so it isn’t obstructing anything. Made sure to flush out any sediment at the bottom of tank before hooking up water hose. Meter at 296.155 before pressurizing. Opened up water valves and ran flow center pumps to circulate all water, then burped pumps to get rid of any air. After pressurizing, Meter reading 297.160, static loop pressure at 58psi. 1 gallon was added during setup.

Near Barrett Ln, Bethesda, MD 20814
Yonas M.

Yonas M.

Spring pm on 03/25/19 On arrival set unit to call for cooling measured supply and return air temp measured voltage and amps inspected electrical connections checked drain and cleaned checked filter checked condenser unit checked electrical connections checked voltage and amps checked coil recommended duct needs to be cleaned unit tested unit operating normal at this time. Also customer she needs a quote to move the heater from the walls and puch it.

Near Custer Rd, Bethesda, MD 20814
Yonas M.

Yonas M.

Carrier heat pump Spring pm Bethesda Md

Near Custer Rd, Bethesda, MD 20814
Bethesda, MD - Carrier heat pump Spring pm Bethesda Md
Youssef  D.

Youssef D.

Upon arrival installed new ga19.also installed black pipes .

Near Moorland Ln, Bethesda, MD 20814
Youssef  D.

Youssef D.

On arrival found floor dry, custOmer explained to me what happened.found humidifier water panel clogged up ,water panel need replacement .also installed wet switch .also noticed black pipe not insulated .need to ordered humidifier panel and insulation for geo pipes .unit operating normal at this time .

Near Moorland Ln, Bethesda, MD 20814
Youssef  D.

Youssef D.

On arrival found system was locked on wet switch safety .customer informed me that yonas had asked him for a map cause he spilled water in the mechanical room.i then reset the switch .units are operating normal.

Near MD-190, Bethesda, MD 20817
Yonas M.

Yonas M.

Spring pm on 03/14/19 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 unit tested units operating normal at this time.

Near MD-190, Bethesda, MD 20817
Colin T.

Colin T.

Upon arrival I was told that FP1 Sensor was bad and needed to be replaced. Found 34 FP1 faults on aid tool. Also found that sensor is reading correct temp and isn’t fluctuating. Replaced sensor anyway and then ran system and checked parameters. Found system was moving too much water and air. Calibrated system to factory specs and called tech support to verify unit operation on all speeds. Variable speed pump was lowered from 50-100% to 5-65%. Fan speeds were lowered to factory spec 2 3 10 11. Pressurized Loop up to 40psi. Ran pumps only to stabilize water pressure at 35psi. Took water sample so we can check antifreeze levels, per water furnace. Unit operating normal at this time but informed customer we will get back to her on status of antifreeze levels.

Near Barrett Ln, Bethesda, MD 20814
Colin T.

Colin T.

Upon arrival customer informed me he would like tune up. Also mentioned that aux heat wasn’t working properly on Geo. During maintenance I found first floor thermostat not working. Non communicating thermostat wired to communicating board, will not function. Quoted customer to replace and he had WiFi 6000 on site. Customer approved quote so I replaced first floor thermostat and removed daughter board. Wired in thermostat to zone panel and checked operation. During test I found damper is not functioning. Zone panel feeding it voltage but damper reopens and flashes fault on Zone Panel. Quoting customer to replace damper actuator. Other than that unit is operating normal at this time. Customer signed up for Maintenece contract.

Near Hamilton Spring Rd, Bethesda, MD 20817
Youssef  D.

Youssef D.

On arrival found system operating normal but some rooms are colder than others ,spoke to Troy and informed me that Charlie supposed to install dampers on all branch lines .i then looked for dampers but couldn't find them .i then balanced system by closing some registers.charllie needs to install dampers .unit is operating normal at this time

Near Gloster Rd, Bethesda, MD 20816
Christopher A.

Christopher A.

The humidifier was wired to always have 24 volts even if the unit was not operating at all. The reason it was not noticed earlier is because the humidifier cover was put on incorrectly. It is a 700 powered humidifier so the cover has to be closed to allow the wire harnesses to make contact. I wired it correctly and tested the operation in front of the customer. I asked if there were any other issues or concerns and customer sid no other issues. I spoke with customer about a maintenance membership and left a copy of the membership benefits with them. I called Alex to let him know that this was warranty work.

Near Hamilton Spring Rd, Bethesda, MD 20817