“My air conditioners starts OK; then it stops in seconds/minutes. What’s wrong?” One of the most annoying (and potentially harmful) problems we encounter is air conditioner short cycling. It involves an air conditioner short cycling in seconds or minutes, without even completing a full cooling cycle. (Example of AC short cycling) Here is what you … Read more
“When I turn on my air conditioner, it starts blowing hot air.” Air conditioner blowing warm air is not all that uncommon AC problem. Unlike most fairly innocent issues, AC blowing hot air is quite alarming. Essentially, the air conditioner should be blowing cold air. That’s pretty much its main job. When AC starts blowing … Read more
“My air conditioner is running but it’s not blowing cold air. What might be the problem?” When air conditioners malfunction, not blowing cold air is one of the most common problems. There is nothing worst than looking at the AC running but not cooling (blowing 80°F or even 90°F output air temperature in the middle … Read more
UV lights for air conditioners and furnaces are one of the most under-utilized additions to HVAC systems. Most of us are primarily looking for the best HVAC UV lights for air conditioners to prevent mold infection (black mold is especially problematic), bacteria spreading, and so on. In actuality, that’s only a secondary advantage of UV … Read more
The sudden realization when you see water leaking from your window air conditioner can be mind-boggling. Do you call the HVAC guy right away? It will cost you at least $200 to fix a window air conditioner leaking water inside the house. Can you fix the window AC unit leakage yourself? The window air conditioner … Read more
Why is my air conditioner making noise? It this OK, or can it be dangerous? How do I fix AC that is making noise? If an air conditioner runs smoothly, nobody notices it. If, however, an AC starts making noises, we are right to be alarmed. AC noises are not just a bothering to our … Read more
R410A is one of the most commonly used refrigerants. It’s patented by Honeywell, and known under several other names such as “AZ-20”, “Genetron R410A”, “Puron”, and so on. It’s the preferred freon for residential air conditioners, replacing the older R22 according to the Montreal Protocol and subsequently phasing out of R22. To properly use it, … Read more
Here’s the thing: Window air conditioners can spend their whole lifespan without recharging. Refrigerator lines are a closed system (unlike car ACs, for example); the R22 or R401A refrigerant can’t escape and doesn’t need to be replenished. So why do we wonder how to recharge a window air conditioner? It’s all had to do with … Read more