Oh, the infamous AC 20-degree rule. Whenever we get 100+ degree days in the summer, some local news will start throwing around the ’20-degree rule for air conditioner’. Do the HVAC experts agree with this rule of thumb (input from HVACR School)? Or it’s just a bunch of nonsense? Alright, let’s first explain what the … Read more
I’ve always wondered if my Tesla Model 3 LR uses more or less electricity than the 3-ton 16 SEER Daikin air conditioner. I never did the actual calculation, but it seems like a fine afternoon to do it now. It is quite exciting to see if the Tesla car uses more electricity than the AC … Read more
“I know I have to point the air filter arrow in the direction of airflow. But what happens if the air filter is backward? Is it just a minor thing or can it blow up my furnace?” Yes, furnace filter backward question. To be absolutely clear: don’t do it. Anybody who turned their air filter … Read more
“AC on dry mode is the same as a dehumidifier. Right?” Well, yes and no. We got a few of these air conditioner dry mode vs. dehumidifier questions by now. It seems like a good idea to adequately explain the difference between a dehumidifier and an aircon dry mode. That word – ‘adequately’ – is … Read more
If you have high humidity, the Dry Mode in air conditioners is the go-to mode. A lot of people have been asking us what does Dry Mode in AC mean. Now would be a good time to explain this dry mode (or dehumidification mode in AC) in detail. We are going to cover these 3 … Read more
“My 10,000 BTU LG portable air conditioner is leaking water from the bottom. I have a puddle of water beneath the unit. Is this normal? Is something wrong with the LG portable AC unit? Do I have a clog? How can I fix this leakage?” We received 2 of these ‘why is my portable AC … Read more
If portable air conditioners bring in outside air is primarily a wildfire issue. Namely, when the sky is almost orange from wildfire smoke (forests in Canada or California burning), you don’t want a portable AC unit to pull air from outside. Let’s answer this in ‘Yes and No’ style, and explain if and why portable … Read more
“I have a 400 sq ft room with 9 ft ceiling height. Sweating at 84°F temperature, I get a lot of sun in South California. I need an air conditioner; what size AC I need? I’m interested in AC BTU for this room size.” This is a question that landed in our inbox. We figured … Read more
A lot of homeowners ask us how many CFM per square foot should you aim for. This is quite easy to answer using the 2 HVAC rules of thumb. Let’s explain how we can easily determine how many CFM per sq ft we need in HVAC. We will also solve a 2,000 sq ft home … Read more
Adequately sizing a mini split is crucial. We have prepared a Mini Split Sizing Calculator to enable anybody to estimate how many BTU mini split you need. On top of that, you will also find a chart for mini split sizes for 300 to 5,000 sq ft (6,000 BTU to 100,000 BTU). Namely, with the … Read more