In June 2022, MrCool presented their newest 4th Gen DIY mini splits. Effectively, it made the beloved MrCool 3rd Gen mini splits an older version of mini splits. Let’s look at how the new MrCool 4th Gen units differ from the now older MrCool 3rd Gen. Obviously, we are going to do this based on … Read more
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