The noise might be caused by having the water pressure up too high for the solenoid. Try backing off the water supply until the sound goes away. Hopefully, there will still be sufficient water pressure for the humidifier at that point. You may need to adjust it a few times if the sound comes back. I originally had my water supply turned up all of the way and the noise when the furnace was running and the humidifier was calling for water was so loud you could hear it all over the home. When I turned down the water, to almost all the way off, there was enough water pressure for the humidifier and the sound was gone. After a few hours, another sound started, so I had to adjust the water pressure a little and it was gone for good.

Thanks to "fasola-shapenote" posting above, - I totally took his advice. My issues were that my wife was against the idea of a whole house fan being installed in our new house, so based on my experience with my old houses whole house belt-driven fan (still) being too noisy, I went with the biggest fan I needed (42" Triangle Fan, and the Dayton shutters) to keep it as quiet as possible. After all, the bigger the quieter. This house is 4,100 sq. feet, - including the basement. So I took about 2/3 of that to conclude that I had 2,700 sq. ft. to evacuate. Considering the real estate in the attic, and the floor lay-out for the upper floor, I decided to install the fan in the main bathroom. Knowing I had to cut a joist, then at least I would have walls close by to support the Âbroken joist. I had already installed pull-down steps into the attic and flooring which limited me to where I could put the fan. I gave up on the idea of installing 2 or 3 24 inch fans. That could have been installed in another closet ceiling without cutting joists. But the noise would have been intolerable. And my wife didnÂt want the eye-sore of the shutters, even though they look fine to me. So I get this Triangle fan delivered off an 18-wheeler near my house. ItÂs shipping weight is 91 lbs, and I had to disconnect my attic steps just to get the thing in the attic. An inch to spare on all sides. I removed the 20 lb. Emerson motor from the fan, and with the help of another family member, used a rope and hook over my ceiling hole to lower the 70 lb fan into place. No small task for the faint-of-heart. But it went really well. For my roof joists, I had vertical center joists going up to the center of the house, and 30 degree joists jutting out in both directions. While the 42 inch shutters were flush with the ceiling, - the 46 inch width fan was raised 22 inches from that. I Âboxed in those 22 inches with ¼ plywood, and tele-scoped to the 46 inch opening for the fan. The 30 degree joists caught the weight of the 90+ lb. fan about 2 feet out. I bought a 60 minute timer switch and the Triangle fan came with itÂs Hi-lo-off switch. The motor is easier to wire when itÂs not attached to the fan. So with the work complete, the fan runs about as quiet as a dryer with no clothes on low. And still itÂs not annoying if I run it on high. I guess the 2 feet up helps. It was a labor-of-love which took me about 4 days to complete. IÂd say about 24 hours hands on. I was freaked about getting all the dimensions correct, - and I knew the joists wouldnÂt be "perfect". Also the drywall had some nail-pops afterwards, put that can be expected after the stresses of cutting it. All-in-all, IÂll be burning about 9 cents an hour vs. close to $2 an hour with my 2-tier air conditioning system(s). I figure itÂll take less than 3 years to re-coup my $700 + investement.

These manual transfer switches use the breaker in the transfer switch when using generator power. Those breakers are not (can not be) AFCI because there is a single neutral from the transfer switch which lands on the neutral bar of the main panel. An AFCI breaker has the neutral coming back from the load and then in normal operation out of the breaker to the neutral bar. Because of this, you can't have AFCI's in a load side transfer switch because you would have to switch the neutrals and the hots. An AFCI needs power to trip, so when your utility power is off, the circuit works because the hot is fed by the generator and the neutral flows from the load to the AFCI breaker in the panel and then to the neutral bar. When utility power is restored, the AFCI is powered and it detects a fault condition because it sees a major imbalance between hot (which it can't detect because it is coming from the generator) and neutral. It is now able to trip since it is powered, and it does.

Olychick is right about logging practices. Logging can be beneficial to forest health when the trees are thinned rather than clear cut, the slash (debris that results from logging such as all the branches that are cut off of the downed trees and smaller trees that are damaged during logging) is removed and a diversity of seedling trees planted to replace those taken during logging operations. Unfortunately, it costs more time and money to log that way, so many companies opt for the cheaper way which is to come in and clear a swath of land. My property shares a border with a large logging company and they come thru here about every 10 years to log. Last time they were here, they left piles of slash and did not replant. Those slash piles are now tinder dry and highly flammable brush such as manzanita has grown where trees once stood. They say a picture is worth a thousand words, so I would like to share several 1000 words with all of you. We have 3.5 acres in the mountains and spend a great deal of time thinning trees and clearing brush. On our property there is an abundance of wildlife including birds, lizards, frogs, squirrels, rabbits, foxes, coyotes, deer, bears and the occasional mountain lion. The trees are healthy and not over crowded and there is very little brush or fuel on the forest floor. Tree branches are cut from the trees to a minimum height of eight feet to remove ladders which allow fires to get up in the tree tops. This is our property - we will be out thinning again this year as soon as the rains start. It's too dry to run a chainsaw right now: The property next door to us is owned by people who haven't been here in 25 years. Brush has accumulated, the trees have become over crowded and many are dead or dying. The brush is so thick that it's nearly impossible to walk thru the woods. You literally can't see the forest for the trees. Between the two properties, there is a power easement. The local power company contracts with tree companies to maintain the easement which is kept cleared to a width of approximately 50 feet. Two winters ago, a tree dropped a very large branch on the power lines and snapped one of them. We were on vacation at the time and not aware of this until we returned. Our nearest neighbor saw smoke coming from the area of our house, and knowing we were gone, decided to investigate. What he found was a live line that was sending out sparks and that had melted all of the snow around it for a distance of 30 feet. The power company was called, shut off the power and fixed the line. Thank God it was winter and not summer. If it had been summer, those sparks and a little bit of wind are all it would have taken to light up the neglected property next door. There are no simple solutions to this problem and all of these things - maintaining equipment and easements, forest health and forest management are connected. Of course, not all fires start in forested areas, but many do and I personally think that investing in improving the health of our forests thru thinning and removing brush along with responsible logging would be a gigantic step in the right direction. Another thing to consider is the size of the easements. I looked it up last night and the width of an easement is determined by factors such as the voltage of the lines and whether or not the area is urban or rural. According to what I read, the maximum easement is 200 feet, but many (such as the one shown above) are much less than that. With pines and douglas firs reaching a height of 150 to 200 feet, those widths are not enough no matter how much time utilities spend clearing and maintaining their easements. But, property owners don't want to give up that much space to utilities nor do they want their large and beautiful trees removed. I don't know what the answer is, but I think it's important to take into account all of the above factors when discussing this issue as there are no simple one size fits all solutions. Power companies such as PGE haven't done a good job of maintaining their equipment, but there are other factors at play too. The neglected property I've shown you is but a drop in the bucket but it illustrates the conditions that exists in many of our forests, but I hope that they give those reading this thread an idea of the problems we face.