Its 95 degrees on a hot, humid day. A service repairman, working on your HVAC, opens the door to your vented crawlspace. He observes ductwork dripping with water, mold on floor joist, and termite tunnels on the crawlspace walls. He services your air conditioner and recommends you call an exterminator. Why are you having all these issues in your crawlspace? Could it be that the naturally vented crawlspace doesn’t work anymore? Some people would say, it never worked. Why is this?
The mini-split heating and cooling system was an idea that evolved from the basic window air conditioner. Window units are simple installations that offer room by room temperature control if enough are installed. However, window units are noisy. To minimize noise, the window unit compressor was moved to a remote location using refrigerant lines to connect to the inside fan-coil. As a result, the mini-split system was born. This product first saw mass appeal in Asian markets. Today these systems are found throughout the world and has become a big player in the domestic HVAC market.
To begin renewing your Washington electrical license, you’ll need your electrical license number and issue date. If you cannot find your electrical license, you can look it up on the Washington State Department of Labor Industries website. You can search by using just your name or your Washington electrical license number if you remember it! Once you’ve located your electrical license information you will be able to figure out your expiration date. In Washington your electrical license will expire every 3 years after the issue date. For example, if your license was issued on May 30, 2018, it will expire on May 30, 2021.