Gaithersburg, MD Air Conditioning, Heating and Plumbing Services
Supreme Air provides Air Conditioning, Heating and Plumbing Services, Repair, Installation, Maintenance, and Tune Up in Gaithersburg, MD and surrounding areas.
Check out what some of our customers are saying about Supreme Air.
for Gaithersburg, MD
Leigh - Gaithersburg, MD
Youssef was awesome. He arrived on time, was very polite and respectful of my property around the work area, very neat and knowledgeable about his craft. He was just very professional. He must be a very valuable asset to your team. I would recommend him to any one with out a shadow of a doubt. He is such a good man.
Capable and friendly service
Lauren - Gaithersburg, MD
Yonas arrived when expected and took care of the service needs promptly and carefully. He had the filter I needed on the truck.
Upon arrival I was directed to Bryan, who explained that they have 3 RTUs, 1 for lobby and 2 for labs in back. He also said that they have been experiencing high humidity in lobby but they are interested in PM contract with us. I was then shown to thermostats and roof ladder in mechanical room. Went to roof and found rooftop units. Wrote down Model and serial numbers, belt and filter sizes. Found both lab units are heating and cooling at the same time. Thermostats indicate heat on, while Humidistat in returns are calling for AC to run. Per notes in both Lennox units, Humidistats located in return duct set for 50%, thermostat set to auto only in summer for heat operation to balance humidity. In short both gas furnace and compressors are running, heating and cooling to bring down humidity. Fresh air dampers closed. Operating controls indicate proper operation and customer is ok with indoor temp and humidity currently but mentioned problems in the past. I also found that left lab RTU has
Installation of Amana Heat Pump Air Handler MN# ASPT29 Heat Pump MN# ASZ160241 Total Job 8765.00
Upon arrival system running to specs, all system components running to spec, system already has necessary accessories, nothing to add.
I installed an EZ Trap and wired it in to turn the downstairs unit off if the drain backs up. I poured water through several times after completing it to check for proper drainage.
Spring Pm On 05/16/19 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 highly recommended Air filter for all units needs to be replaced on time checked compressor capacitor checked water pressure and temp checked all other electrical connections HIGHLY RECOMMENDED ALL UNITS NEED UV LIGHTS INSTALLATION AND ALSO DUCTS NEED TO BE CLEANED unit has problems with dust and dogs hair units tested units operating normal at this time.
Spring pm On 05/16/19 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 cleaned checked condenser unit outdoor checked electrical connections checked voltage and amps checked compressor capacitor unit #2 MITSUBISHI - - HEAT PUMP SPLIT SYSTEM Refrigerant it was low I gave quote for customer accepted customer donâ€™t need the leak search and repair just needs top up for now if is low again the need to replace the unit that is the customer needs no obvious leak I topped up 1 pound 5 oz 410A tested no leaks the pressure and temp is stayed checked all other electrical connections measured supply and return air temp unit operating normal at this time collected $431.80 with CC on file.
SA outstanding balance settlement
Customer let me know that they needed the unit checked out. Customer signed up for service membership. I performed cooling maintenance after letting the customer know that the drips were condensation forming on the geo piping. I did as a courtesy insulate two joints which were not insulated or the insulation had cracked away from. I cleaned the condensate pan and drain lines and ran hot water to flush the debris out and to check for proper drainage and proper operation of the condensate pump. I checked the electrical wiring and electrical systems, all are within specification. I set blower speeds correctly to 2,3,10,11 from 3,6,10,11. These high speeds at low compressor speeds had resulted in some out of envelope faults. I then operated the unit on speed 9 cooling mode. Set flow rate to 10.5 gpm as was confirmed by the performance monitor. Unit operating normal. I recommended installing a whole house surge protector to the main electrical panel and also installing an Apco air scrubber
On arrival set unit to call for cooling ,found system slightly low on refrigerant,added .5 lbs of 410a .checked fan ok ,amps .9 .also preformed electronic leak check.unit operating normal ,if it looses Freon again ,whole system leak check would be required.
Upon arrival I found thermostat at 72, off. Customer explained that ac wasnâ€™t going below 68. Turned on AC, put gauges on system, and checked operation. Went indoors and found filter very restricted. 16x25x1, customer didnâ€™t have correct size replacement, had to cut 20x25x1 to size. Put filter in and restarted AC. Suction 133psi, Discharge 249psi, SH 10, SC 11, delta air temp 20 with nice condensation around suction line. Ran unit until it satisfied at 68, took less than an hour. Unit operating normal at this time with new filter. When checking out, I was also told that thermostat itself will not let them set the temperature above 68 in cooling. Found max cool temp setting at 68, changed to 80, left minimum at 64. Put unit back into AC mode and checked operation again. Unit operating normal.
Upon arrival I was told that carbon monoxide detector was going off in basement next to furnace and water heater. During diagnostics I found old carbon monoxide detector on the ground not in use and new one plugged in reading 0. I brought brand new detector from truck and plugged in as well. Inspected water heater and both furnaces because they are all gas appliances. Both heat exchangers in each furnace were in good condition, no rust or cracks. Ran hot water and made sure combustion blower turned on normally. Traced all flue piping and found no cracks or broken parts. Ran furnaces and checked operation. Found normal heat rise on both and normal operation. Neither furnace or water heater caused carbon monoxide detector to go off, bad detector. Customer has new one in place already. Units operating normal. Customers daughter let me in the house, neither Tim or Nancy weâ€™re home. Tried calling when I was finished to let them know what I found but didnâ€™t get in touch with either. Cu
I replaced the air filter with one provided by the customer. I cleaned the condensate pan and drain lines and ran hot water to flush the debris out and checked for leaks and operation of the condensate pump. I operated the unit on second stage cooling mode and confirmed proper flow rate and heat of rejection. I did pressurize the ground loop to 65 psi. I checked the electrical wiring and electrical systems, capacitor at full value and contactor is not burnt or pitted. Unit is operating normal. I recommend adding Intellistart module to help the compressor at start up and thus extend its life. Itâ€™s also important to add some manner of surge protection for the equipment. A whole house surge protector on the main panel protects everything in the home.
Finished pm at location.
Upon arrival I went to unit 1.3 and shut off power. Replaced contactor and capacitor. Verified good connections. Removed old outdoor fan and replaced with new. Reconnected all wires then returned power to unit. Called for ac and checked operation. Found quiet and normal operation. Customer thought we were here to fix noise for unit 1.2. Compressor is whatâ€™s making noise on system. We have talked about this with customer before and I believe we have written a quote last year but submitting another just to be sure.
I performed the tune up on the downstairs unit. I checked the electrical wiring and electrical systems, all are within specification. The drain line was not clogged. The filter was clean. I operated the unit on cooling mode and recorded 20+ degree delta temperatures across the evaporator coil. Refrigerant pressures were normal as well a# superheat and subcooling. Unit operating normal. The upstairs system was installed during the winter months and refrigerant needed to be added to the refrigerant circuit as it was only cooling by 13-14 degrees. I added refrigerant until I achieved 12 degree subcooling and normal operating pressures with normal superheat. I went back into the attic to confirm 20+ degree delta temperatures across the evaporator coil. Unit is properly charged. I highly recommend adding start assist kits to the electrical circuit for each compressor. Customer was on a business call and could not break away. I wrote the estimates on the tasking sheet and will email the es
Installed and wired thermostat. Checked unit operation.
Recovered refrigerant and removed outdoor unit and indoor coil . Flushed out lineset . Removed old disconnect for outdoor unit and replaced . Tied in outdoor unit ( high and low voltage , refrigerant lines ). Set indoor coil and connected supply duct . Sealed joints using metal tape . Connected refrigerant lines inside . Pressurized system at 350 psi , held for 25 minutes. Pulled system into a vacuum of 580 microns . Replaced condensate pump and ran new drain . Broke charge on system and checked operations . Suction pressure at 115 head pressure at 240 . Indoor temp 66 degrees with supply air 44 degrees . System is operating properly
Checked air filters. Cleaned drains and traps. Checked wiring and connections. Checked thermostat and unit operations.
Installation of Amana Heat Pump Air Handler MN# ASPT29 Heat Pump MN# ASZ160241 Total Job 8765.00
Repiped main water line over to filter for full house water suppl installed bypass valve also installed 50gallon electric water heater
Got information for drain pan sizes of units 2.1 and 2.3. Sending office dimensions to find drain pans so we can quote customer to replace. Also got information on outdoor fan for unit 1.3, bearings are wearing and is making noise when running. Per Alex, we donâ€™t need the dimensions of coil anymore, customer is going to replace unit. Started pm by replacing filters, inspecting coils, checking belts and blowers. Need to return to finish pm. Uploaded estimates so we can quote customer the repairs noted above.
Upon arrival I was told that 4/6 Magic Aire AHU smoke detectors werenâ€™t working. We had replaced zoning with remote sensors and 1 common thermostat, now smoke detectors arenâ€™t shutting off blowers, customer wanted me to see why. During diagnostics I found all AHUs wired the same and smoke detectors donâ€™t have AC 24v wired to them, all smoke detectors are using DC voltage. In order for these smoke detectors to work with hvac systems now that zoning isnâ€™t being used, we would need to run thermostat wire to each detector and have AC 24v contact on each smoke detector break R signal to thermostat. EST Smoke Detector Model #SIGA-SD. Spoke to Bill about this and he would like repairs made, but not today. He asked for me to start PM and get coil and pan sizes for other units.
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 cleaned also we installed another zoning for the unit customer she wont the in side the walls instead out side customer she needs to be done today or tomorrow customer renovat the basement bc of this problem she canâ€™t do anything unit tested unit operating normal at this time.
Could not complete maintenance. Disconnect on roof is hard wired and needs to be replaced . Also found that the compressor kicks on and pulls lock rotor amps for about 10 seconds causing the entire unit to shake and then cuts off . We were out last June and condemned it . Gave costumer bid for replacement . That will need to be adressed for costumer to have AC in the summer . Right now I removed Y1 from board .
On arrival found system operating but not normal ,found outdoor fan bad .also other components are going bad too.system is 16 years old ,better to replace system ,schedule customer for an estimate