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Is your AC not blowing cold air? AC issues can be a very stressful. There are many reasons why an Air Conditioner may stop blowing cold air. Some are easy to fix and some are not. Here are five of the most common reasons why your AC may not be blowing cold air:
1. Thermostat
Start by checking your thermostat and may sure it is set to the correct setting. This may seem obvious, but it is often overlooked.
2. A dirty filter
One common, and easily remedied causes are dirty or clogged filters. These filters work overtime trapping particles and dust in the air. If they are not changed regularly, they can easily become clogged.
When your filter is clogged, the air flow diminishes and your Air Conditioner may shut down. When filters aren’t changed often enough, parts wear out faster than they should. It can even affect the evaporator coil and condenser and create a much larger problem.
Your filter should be changed every one to three months. If you have indoor pets, you may need to change it more often.
3. A coolant leak
If your Air Conditioner is not blowing cold air, it may be low on coolant. This is more than likely caused by a leak.
If you suspect a refrigerant leak, you should contact an HVAC professional right away. Small leaks can be difficult to diagnose and fix properly.
4. A problem with the Evaporator Coil or Condenser
A clean filter will keep your coils working, however they can still wear out eventually.
What is an evaporator coil? There are two kinds of air conditioner coils every cooling system: the evaporator coil and the condenser coil. These coils basically distribute heat by moving gases and cooling the air with coolant. They need to stay clean to help transfer heat away. Coils can also freeze-up if the refrigerant is running low.
Issues with the coils will cause major disruption within the air conditioning unit and should be seen by an HVAC professional as soon as possible.
5. Ventilation issues
Just like air filters that are clogged and restrict airflow, a blocked or clogged vent can do the same thing.
The ventilation system runs throughout the house and if something creates a blockage or a leak in the ductwork, it will affect the cooling. A tear or hole in the ductwork could mean your cold air may be leaking out into your attic.
Sometimes the vent itself becomes blocked by furniture or even closed. The room with that vent may not be as cool as the rest of the house.
Proper maintenance will prevent your AC from not blowing cold air
Dirt and grime are the number one cause of Air Conditioning failures. Your air conditioner needs regular maintenance and cleaning. Filters need to be changed and all other working components should be examined by a professional.
We recommend having your system serviced twice a year to keep it working as it should. A trained technician can spot and correct issues before they become costly.
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He serviced the AC and answered our questions.
Wasn't easy to solve problem but persistent and analysis used and got job done!
Rocky did an amazing job for us! Thank you.
A well done job!!!
Excellent service. Careful attention to our home.
RJ is well-versed in the knowledge of AC
The record shows I have been a very long term client, that should prove I am a satisfied customer.
Rocky was very kind and professional.
Outstanding young man; definitely knows the business of air conditioning; Air Now is the best
Serviceman was very thorough and professional. Given the relative newness of the AC system, however, I was surprised at how many items needed fixing/replacement and their replacement costs.
The gentleman told us in the beginning that it was free. Then when he finished told us it was $99.00 that was free if I bought one of their contracts. I don't know about the service I did not watch him.
Response from AirNow:
Thank you for your feedback. We have taken a look into your account. A refund has been issued. We do apologize for the inconvenience.
Your technician was right on time, pleasant to deal with. Did his job quickly and explained what he did. I like your price, we have been with Air Now for quite a few years, plan on continuing.
Arrived to find the thermostat was turned off. Mr Udell stated that when he set the heat the unit began to make a noise and he shut it off at the breaker. Set the thermostat to heat, turned on the breaker and the contactor began to “chatter”. Disconnected the low voltage wires and reconnected one at a time to determine which wire was causing the issue. Found the contactor began to chatter when the white was connected. Determined the heat strip is faulty and needs to be replaced.
Arrived to find the thermostat set to off, changed the setting to cool and fan to on, and lowered the temperature down ten degrees. The air handler was not operational at that time. Inspected the air handler for high voltage, had 240.1V, and checked the low voltage, had 0V common to red. Found the low voltage fuse was blown, replaced the fuse and retested, 27.7V common to red and 27.7V through the float switch. After the time delay the system began operation. Switched the thermostat to test the heating, had the heat strips activate and not the blower motor. Tested the low voltage signal on common to white, had 27.6V, also had 27.6V at the blower motor. Tried changing the speed settings, it did not start. Switched the thermostat to cool and the motor still did not start. Called Mr Schmucker for authorization to change the blower and changed the motor. Recommend: Shampooing both of the coils to help improve airflow and air quality Installing a surge protector for the indoor and outdoor
Performed system diagnostics and provided customer with estimates. Also installed new filter provided by the customer.
Cleaned and flushed drain line, checked electrical system, changed filter 20x25x4, owner had there own. System is working great at this time. The surge protector is for the condenser. Owner has declined recommendations at this time. Did invest in assurance plan. The are not here all year. The next maintenance will be October??
Performed full maintenance Filter will be changed by customer Uv bulb replaced Drain line flushed Outside condenser coils has light debris, recommend shampoo for coils Readings at unit ok Minor bacterial growth in unit Customer renewed assurance membership No access to attic. Condo
Cleaned and flushed drain line, checked electrical system, checked filter, 16x20x1. Recommended duct replacement and insulation. Client declined recommendations at this time will have adviser come out next winter. Can’t do anything at this time.
Cleaned drain line, checked electrical system, checked filter 20x25x1, system is working great at this time. Client has declined recommendations at this time. Just wanted the maintenance done will they are here.
Arrived to address customers concerns found the unit not operational, while doing inspection found that the unit was not getting low voltage out of the transformer no fuse inline, replaced transformer and added fuse inline turned unit on and unit ran great for more then 30 mins. In cooling
Performed routine maintenance inspection
Arrived to address customers concerns customer informed me heat hasn’t been working. Found bad heat strip. Did complete inspection pointing out to customer any parts and or accessories to the unit that were barely functional. Made
Performed full maintenance Drain line flushed Filter ok Uv bulb replaced Drain pan treatment installed Readings at unit ok Checked all electrical connections If bacteria is still on blower wheel next Maintenance , customer will get blower cleaned No access to ductwork customer has attic blocked off
Cleaned and flushed drain line, checked electrical system, changed filter 16x20x4 owner had there own filter, changed Uv light. System is working great at this time. Owner passed on the recommendations at this time. Said maybe next maintenance.
Service call, Last maintenance and repair completed on this York system was October 2021. All other visits were allocated toward the LG mini split, in the back unit. Frozen system, York unit. Parts warranty only. Evap coil very dirty on back side, and restricted Filter in trash also dirty and restricted After 15 min runtime, Pressures 8.5° sub cooling 125/250:psi 68° outdoor ambient temperature, System not showing signs of leak. Maintenance program activated today on York. True variable speed, blower motor function on and off multiple times. Motor starting every single time with no intermittency. Overall system freezing results, dirty coil, and air filter together restricting airflow. Evaporator coil, cleaning necessary to prevent future freezer, and also damage to the compressor or motors, that can result in failure. The best way to clean the evaporator coil earliest remove it from the unit, bring it outside, using heavy duty chemical cleaning that thumbs up, remove debris
Service call, non program family member Last meeting is completed which was the free maintenance upon new equipment install, February 15, 24, 2022 Recommend renewing maintenance program. Provides no dispatching fees, 2 maintenance visits, and priority service which comes with 20% off. Please remember, the warranty is through the manufacturer. They require scheduled maintenance to be completed in order for approval during warranty repair situations. If there is a laps in maintenance history for the year, warranty part / and labor claims will not be approved. No cool findings: blower motor not functioning. 1/2 hp ecm controller blower needs to be replaced. Hooked up, Intermatic surge protection, 200 amp into the main panel. Direct wire to both the air handler and condenser, providing protection, directly to both, but also with being in the main panel hooked up to the first breaker from the main power intake, surge protector is also now protecting everything else below. But keep in m
Cleaned and flushed drain line, checked electrical system, changed filter 16x20x4. Owner had there own filter. System is working great at this time.
ESA two of 2×4 Clean and flush drain lines Washed all filters Cleaned all four indoor coils with coil cleaner and duct fresh Washed and cleaned both outdoor coil’s with water Cleaned both fresh air intakes All units have great temperature split gree unit one 19° split gree unit two 21° split LG unit one had a 22° split LG unit two had a 23° split Let all units run in heat for more than 30 minutes all units had a 20+ degrees split in heat
Cleaned drain line, checked electrical system,changed filter 20x20x4, system is working great at this time.
Arrived to find the low voltage fuse was blown causing the system to be inoperable. Separated the low voltage wires, replaced the fuse, and reconnected the wires individually to determine if there was a short. Had red, common, green, and orange connected without a problem. When connecting yellow, the fuse blew. The signal from yellow goes through the defrost board and high pressure switch before it gets to the contactor. Bypassed the high pressure switch and board to directly wire yellow to the contactor and the system began operating.
Performed full maintenance Filter changed Uv bulb needs replacement Minor bacterial growth Condenser readings ok Drain line flushed Customer declined all options
Service call nonmember Wes signed up for the maintenance program once again on the downstairs unit. He will be calling us soon to add, serve protection Low-voltage down Found the fuse rubbing up against the insulation matting inside air handler. Replaced low-voltage fuse tested system amperage running perfect. System running. Found out that the temporary powerline running to the house was just replaced from the hurricane and the main powerline was hooked up just recently. In a rush of electricity most likely blew the fuse. System is running perfectly and bridges are right on the money there’s no spikes or dirty power. No physical shorts of any means. Previous visit secondary transport was installed for ultraviolet, light and relay installed for blower control HMH. All ultraviolet lights are functioning. Air handler located underneath the house approximately 35 feet crawl
Completed pull and clean of blower assembly, rinsed coil and cleared drain line. Customer signed up for maintenance plan. Went over function with owner. Changed batteries supplied by owner. Other unit on site is serviced by another company.
Performed a system check up. Found a/h to be double filtered. Uv bulb was burned out. Flushed drain line . Installed new pew 16x20x4” filter and changed the Uv bulb
Duct Cleaning
ESA 2-2 Maintenance performed today. Client did renew maintenance plan today for both systems. Checked system operations, 49/70 temp split, amp draws, static, blower, 20x25x4 filter, evap, 43/45 capacitor, drain line, uv light, disconnects, electrical connections, plenums, ductwork, attic insulation, no start assist, no surge protection. Flushed drain line with green cleaner and water. Tightened electrical connections. Replaced air filter client provided. UV Lamp is still operational, however, should be replaced annually per manufacturer guidelines. System operations normal.
Performed full maintenance Filter ok No bacterial growth in unit Drain line cleared and flushed Recommend uv system Readings on system ok Customer declined assurance membership
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