We’re seeing a lot of mentions about inverter technology— usually joined in a sentence or paragraph with variable speed. But WTH does this mean? As usual, most mentions tout it as a big energy saver without taking the trouble to explain what it is.
So let’s use our imagination. It could be an air conditioning unit held upside down. Or it could be a very shy HVAC system . . . no! Wait. That’s introverted.
Oh well. We’ll settle for the real thing. An inverter is a gadget that changes alternating current (AC) to direct current (DC). That enables your device to work at variable speeds so the compressor doesn’t need to be all-on or all-off all the time because the AC (alternating current, in this context) can be adjusted to a desired frequency.
Not having the thing power up and power down however many times per day is a huge improvement. For starters, a variable air conditioner
uses 30-50% less power;
reaches the desired temperature much more quickly;
reduces start-up time; avoids demand spikes;
eliminates crazy temperature fluctuations;
runs way quieter.
Since many inverter-based air conditioners are heat pumps, that gives them even more of an edge.
Inverted-based technology costs more upfront, but proponents say you’ll quickly realize the initial investment through operational savings. In addition— listen up, People in the coastal states!— a two-speed system does a better job of removing humidity because it’s running most of the time, albeit at a lower speed, and not shutting off before the air is de-moisturized.
Since last year, all of the major manufacturers offer variable-speed central air conditioning units. Check out our listing (150 different models) and note how many are described as two-stage. [http://www.acdoctor.com/Air-Conditioners-c-61.html?view_all=Y]
We also give little $ symbols to indicate relative price. This is just a way of saying a $$ is more expensive than a $. Don’t take it too literally. But if you’re in the market for a new AC, check out the multi-speed units with inverter technology. At least you’ll know what they’re talking about (as if you didn’t already).