Rockville, MD Air Conditioning, Heating and Plumbing Services

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Rockville, MD Air Conditioning, Heating and Plumbing Services

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

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

Local Reviews
for Rockville, MD

Supreme Air Rated 4.9 out of 5 stars based on 7 customer reviews

Map of Rockville, MD

Great Service




Review of Supreme Air

Colin was very knowledgeable, diagnosed the problem. Also is making Supreme Air management aware that new units installed during the winter should have courtesy coolant level check prior to the warm weather.


Map of Rockville, MD

Technician was fabulous but...




Review of Supreme Air

Technician ran through several tests and diagnostics but our problem is not solved. Outside temperatures were in the low 80s today and our AC system could not cool the house or reduce the humidity in the afternoon hours. Thermostat was set for 72, temps got up to 77 inside the house. I need this brand new unit to cool my house asap. Thanks Bill and Sharon Harper Friday May 31st


Map of Rockville, MD

Good Service!




Review of Supreme Air

I like the notices you send by text and email with the picture of who is coming. I also like that the service representative calls and lets you know how soon he will arrive. Yonas is very professional.


Map of Rockville, MD

Great service!




Review of Supreme Air


Response from Supreme Air:

Liu, thank you for submitting this review. We are thrilled we have provided you with such great service. We hope to continue this trend during our next visit to your home for all of your future HVAC & Plumbing needs. Have a supreme day!


Map of Rockville, MD

Tuning up




Review of Supreme Air

Good job


Response from Supreme Air:

Barry, thank you so much for taking the time to provide us this feedback. We're thrilled we did such a good job for you. We can't wait for our visit in the fall to tune up the heating system. Have a supreme day!


Map of Rockville, MD

Great Timely Service




Review of Supreme Air

Service within 3 hours from placing the call. Tech was fast and thorough. Really knows his trade.


Map of Rockville, MD

Very Professional, great service.




Review of Supreme Air

Very well trained personnel and very clean. May be best o maintain in contact with the homeowner on arrival time. We had the 8-12 slot and personnel arrived after 1PM. Why is the humidifier not part of the service specially since it was installed by supreme air.


Colin T.

Colin T.

Upon arrival I met Ricardo and he showed me to systems and showed me how old unit was wired. Packaged unit in basement has relays already, just needed to connected low voltage wires to contactor for relay. Turned on power to unit and tested packaged unit alone, pumps came on and started running. Shut off packaged unit and ran split. Pumps came on and are operating normal. Then I called for both units to run and pumps stayed on. Units operating normal.

Near Woodsend Ct, Rockville, MD 20854
Colin T.

Colin T.

Upon arrival I went to thermostat and found unit calling for 68, currently 74. During diagnostics I went to condenser and put gauges on. Found high Superheat and high subcooling, low suction and high discharge, low delta air temp at Evap. Added a few ounces of refrigerant and discharge shot straight up. Then I went to sensing bulb and put it in ice water then hit water, no adjustment to pressures. TXV needs to be replaced. Informed customer, who is in Hawaii and they asked me to ask the office if the unit will be replaced since this is the 4th service visit and it’s still not fixed. Office please follow up with customer on part and warranty info. Joe asked if we could contact him with eta of part, he said if he doesn’t answer please leave message.

Near Cherry Valley Dr, Rockville, MD 20853
Colin T.

Colin T.

Upon arrival I was told there may be possible problem with compressor on Carrier RTU we installed last year. During diagnostics I opened up panels and checked voltage and ohms of compressor. Found normal ohms and no blown fuses, proper high voltage. Called for ac and found compressor not moving any refrigerant, grinding. Swapped L1 and L2 and restarted unit to find compressor now working, but unit shut off on high pressure almost Immediately. Put gauges on system and found unit is heating instead of cooling. AX38 belt also worn and doesn’t have much tension. Replaced AX38 belt with truck stocked A38. Tested operation and we have normal airflow. Reprogrammed Thermostat for Conventional instead of HeatPump per installation manual. Reset system and called for ac. Unit now operating normally. Measured voltage and amperage of compressor, od fan, and blower. Refrigerant pressures normal. Measured delta air temps at both coils. Found no additional problems.

Near Muncaster Mill Rd, Rockville, MD 20853
Colin T.

Colin T.

Upon arrival I was told main floor system wasn’t working at all. During diagnostics I went to furnace first and found led flashing 24, secondary voltage fuse open. Removed panel to find fuse blown. Replaced with new and returned power to system. Unit came on naturally and started cooling. Checked all parameters and found everything to be working normally. It was unclear who would be paying for service today so I called Alex and he asked for me to bill Alan, then he would bill customer. I spoke to customer about charges and they wanted to replace the fuse themselves. They gave me check for service and diagnostic fees.

Near Beall Ave, Rockville, MD 20850
Colin T.

Colin T.

Upon arrival I was told ac wasn’t cooling well. Customer showed me pictures of outdoor temp being 80 and indoor set for 72 but system not getting below 76 indoors. Customer showed me indoor and outdoor units. System was running in ac so I put gauges on and found 500psi head pressure and 130psi suction. Superheat was negative and subcool was over 30. Went indoors and checked airflow, all normal. Delta air temp is 14 degrees. Ran ac again and removed over 1.5lbs of 410a. Matched Superheat and subcool with installation manual. Now Superheat at 10 and subcool at 11. Delta air temp now 22 degrees. Unit operating normal.

Near Cherry Valley Dr, Rockville, MD 20853
Yonas M.

Yonas M.

Service call on 05/31/19 On arrival set units to call for cooling rooftop unit operating but is a lot of noise is coming out from the compressor I checked electrical connections checked voltage and amps checked the compressor wires I put it back cooling down the compressor start up the noise is coming again I put my gauge my low and high side psi is equal 300psi turns off the unit changed the L1 and L2 switch around start up the compressor run I put my gauge when the low side gage psi when is gate 150 psi the compressor is cutting off and back up to 250 psi I cannot find the problem for this unit. I checked the second unit back side the building set unit to call for cooling checked electrical connections checked voltage and amps measured supply and return air temp checked condenser unit checked electrical connections checked voltage and amps checked compressor capacitor checked all other electrical connections unit operating normal at this time. The RTU we have to come back to find the

Near Muncaster Mill Rd, Rockville, MD 20853
roberts@supremeairllc.com

roberts@supremeairllc.com

Found unit low on charge. Added 3.5lbs of 410A refrigerate. Suction pressure running at 122 psig. Head pressure creeped up to 425 psig. Cleaned condenser coils. Head pressure went down to 350 psig. but went back up. Checked the TXV and found it working properly. Found condenser fan motor is only at 810 rpm. Need to get more information on the unit.

Near Cherry Valley Dr, Rockville, MD 20853
roberts@supremeairllc.com

roberts@supremeairllc.com

Checked wiring and connections. Checked traps and drains. Checked air filters. Checked operation.

Near Brookstone Ct, Rockville, MD 20854
Yonas M.

Yonas M.

Spring Pm On 05/16/19 On arrival set the unit to call for cooling measured supply and return air temp measured voltage and amps inspected electrical connections checked drain and cleaned checked filter unit #1 air filter needs to be replaced on time checked water pressure and temp checked compressor capacitor checked all other electrical connections unit tested units operating normal at this time.

Near S Glen Rd, Rockville, MD 20854
Christopher A.

Christopher A.

The technician previously made a repair where wires were wire nutted together. The transformer wire was not making good connection and there was no 24 volts to the thermostat. I used spade connectors on the end of each wire and plugged them back into the original terminal strip. Unit operating normal.

Near Piney Meetinghouse Rd, Rockville, MD 20854
Christopher A.

Christopher A.

Completed.

Near Beall Ave, Rockville, MD 20850
Christopher A.

Christopher A.

Ran a new discharge hose from pump up into the ceiling rafters and over 6-8 feet that dumps into the washer can. Strapped hose neatly and securely. Poured water in the pump to check for proper drainage. I called the installation manager to verify warranty status.

Near Beall Ave, Rockville, MD 20850
michaelr@supremeairllc.com

michaelr@supremeairllc.com

installed drain for shower pan and set bathtub for bathroom. Need to return to set shower pan.

Near Atwell Rd, Rockville, MD 20854
michaelr@supremeairllc.com

michaelr@supremeairllc.com

On arrival checked thermostat was calling for cooling. Measured EWP,LWP,EWT,LWT, return temperature, supply temperature, amps, and voltage. Inspected electrical connections, replaced dirty filter provided by customer, blower wheel is clean, cleaned condensate drain line as well as the condensate drain pan. I found a dirty evaporator coil and showed to customer. Explained to her the benefits of cleaning evaporator coil, installing a uv light, and a whole house surge protector. Unit is operating normal at this time.

Near Guy Ct, Rockville, MD 20850
Christopher A.

Christopher A.

Customer signed up for maintenance membership today. The 16*25*1 filter does need to be replaced. I made it easier to remove by widening the opening. I cleaned the condensate pan and drain lines and ran hot water to flush the debris and to make sure it drained properly without leaks and that the condensate pump was working. I operated the unit on cooling mode and had 20+ degree delta temperatures across the evaporator coil. Since it is a relatively new unit I checked the refrigerant pressures to make sure everything was in good shape. Pressures were normal with normal superheat. I checked the electrical wiring and electrical systems, all are within specification. Unit operating normal. Answered a few questions regarding the thermostat and hopefully helped the customer to feel more comfortable with using it. I enabled “auto” changeover if it makes it easier for the customer to set it and forget it. They are going to experiment. I recommended a wet switch at the furnace and a star

Near Coldstream Dr, Rockville, MD 20854
Derrick S.

Derrick S.

Installed new diverter in first floor shower and second floor tub repaired broken 1/2 lines feeding vanity in 1st and 2nd floor both hot and cold. Also need to return to bust up concrete floor for 1st floor shower to remove cast iron pipe and reroute with pvc to fit new shower base going in. Also need to cut out old waste and overflow and trap to install new waste and overflow for new bath tub that needs to be set

Near Atwell Rd, Rockville, MD 20854
Youssef  D.

Youssef D.

Checked air filters, checked wiring and connection, checked for water leaks and flow, cleaned drains and traps. Rewired dehumidifiers and checked operation. Checked thermostat operations.

Near Pettit Way, Rockville, MD 20854
ALEX K.

ALEX K.

Invoice created to clear up AR

Near Loch Edin Ct, Rockville, MD 20854
ALEX K.

ALEX K.

Invoice created to clear up AR

Near S Glen Rd, Rockville, MD 20854
michaelr@supremeairllc.com

michaelr@supremeairllc.com

On arrival set thermostat was calling for heat. An unusual noise was coming out of the blower motor, disconnected system to inspected it and found insulation stucked in the blower wheel. Took it off and unit is operating normal at this time. Customer paid $204.85, but we need to contact water furnace on Monday for part credit. Per Alex.

Near Currier Dr, Rockville, MD 20850
Derrick S.

Derrick S.

Some one tied braided line onto the copper line and tried to push it thru the floor causing copper line to bend removed old copper line and installed new copper line and tied braided supply back in left plenty of slack on both sides so there is no need to push anything down thru the floor also capped off 3/4 gas line from old stove under floor

Near Atwell Rd, Rockville, MD 20854
michaelr@supremeairllc.com

michaelr@supremeairllc.com

On arrival checked thermostat was calling for cooling. Measure return temperature, supply temperature, amps, voltage, contactor, capacitor,filter is clean,blower wheel is clean, evaporator coil is clean, condenser coil is clean.unit is operating normal at this time.

Near Ashleigh Woods Ct, Rockville, MD 20851
michaelr@supremeairllc.com

michaelr@supremeairllc.com

On arrival checked thermostat was calling for cooling. Measure water pressure coming in and going out, water temperature coming in and going out. Inspected electrical connections, voltage, amps, capacitor, contactor, evaporator coil is clean, and replace filter provided by customer(30x32x1). Unit is operating correctly at this time.

Near Currier Dr, Rockville, MD 20850
Christopher A.

Christopher A.

I pressurized the ground loop to 65 psi. I set both flow rates correctly and checked heat of rejection. I cleaned the condensate drain pan# and drain lines and ran hot water to flush them out. I checked the electrical wiring and electrical systems, all are within specification. Both units are cooling with 20 degrees. Units are operating normal. I recommend adding an Intellistart Module to each unit to protect the compressor from shorted out windings by lowering the starting amperage by 50-60%. Intellistart is made by Water Furnace for Water Furnace. Customer wanted an estimate to talk over with there spouse. Customer has main panel box surge protectors, which is great. The upstairs units air handler had ultra violet lights installed but there are none on unit #1. I recommend adding a single Blue Tube UV light to this system and putting it in below the Trane E.A.C.

Near Loch Edin Ct, Rockville, MD 20854
Christopher A.

Christopher A.

I pressurized the ground loop to 65 psi. I went to switch loop pumps over from “winter” pump to “spring” pump and the spring pump is broken. I tried purging air from it but it did not help, the pump is grinding and not pumping water. I left the winter pump in control and made an estimate to replace the left side pump and flush the ground loop. I made a part order form (estimate) for this. The filters had been replaced in December and were still in great shape. I checked the electrical wiring and electrical systems, all are within specification except the contactors are now showing pitting at the contact points and should be replaced. I made a quote for that as well. I cleaned the condensate drain pans and drain lines. Unit are operating normal and coolin* with 20+ degrees.

Near Loch Edin Ct, Rockville, MD 20854