North Potomac, MD Air Conditioning, Heating and Plumbing Services
Supreme Air provides Air Conditioning, Heating and Plumbing Services, Repair, Installation, Maintenance, and Tune Up in North Potomac, MD and surrounding areas.
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for North Potomac, MD
Lord - North Potomac, MD
Colin was extremely professional and knowledgeable. Located the issue promptly and advised on how to proceed with work. Completed project as described. Very pleasant experience from start to finish.
Customer had questions about why the thermostat wire could not be pulled through. I explained I tried but it snags on an obstacle under the floor. Removing flooring and patching plaster walls would cost more than to install a radio frequency thermostat with equipment interface module. Customer also said they only paid for 2 10KW backup heat packs and questioned about how I knew there was one in the split system air handler. I explained the process of testing the equipment and trying to run it from the existing thermostat and it would not turn on. The two elements are visible when the cover is off of the air handler. Even when I tried to run it from the terminal strip in the air handler it would not come on until two high voltage wires were switched between l1 and l2. Maybe I uncovered a problem they did not know they had. My job was too test the equipment in heating mode. I found a problem, tried to resolve it the cheapest way, but when that didnâ€™t work offered the best solution t
I reset the thermostats to default heat stage setting of .5,.5,.5. Both ground loops haves cold temperatures and are not heating as well as could be because they have been running constantly. Unit #1 and #2 are operating normal. Unit #3 has back up heat staging but does not work because they ran a 5 wire thermostat wire from the air handler to the thermostat. There is not enough wires to make it work. I quoted a repair to fish 8 wire through but it hit something in the wall and I had to stop and connect it back the way it was. I showed the customer and recommended Honeywell wireless thermostat with equipment interface. I will send a quote and customer will speak with there partner about it. I checked the electrical wiring and electrical systems, all are within specification. Flow rates are set correctly. Loop pressures are adequate.
On arrival we found defective control board on unit #3 main house basement. We created an stimate and customer agreed to replace defective board. After replacing defective part unit started operating normal.
Repaired refrigerant leak at wall penetration leading to Attic. Ryan helped hold ladder and torch while brazing new elbow and piping. Pressurized to 300psi nitrogen and held while we clamped lineset back to wall. Pressure held. Vacuumed system down then added refrigerant. Balanced refrigerant using charging chart. Unit is operating normal at this time.
Upon arrival I found Carrier HeatPump was locked out on low pressure fault. Found thermostat had recorded several low pressure faults. I can see evidence of oil on both refrigerant lines coming from attic to outdoor unit on the lineset outside running down house. Went to AHU in attic and found no leaks inside. Set up extension ladder and removed thumb gum sealing penetration to find leak is inside of wall. Quoting customer for leak search and repair but need 2 guys to make repair. Repair will require us to braze lineset on extension ladder. Need someone to held hold ladder, torch, and extra piping while repairing line. Customer approved repair but we need to return with 2 guys, 3/8copper pipe, (2) 3/8 couplings, and (2) 3/8 90s. Office please call to schedule return.
Making repair and performing maintenance on Water Furnace Geo System in Potomac