brand new home w/ electrical dimming throughout - help!
We had a new custom home built and moved in 3 months ago. It's 2500 sf with a 750sf apartment above the garage. Since we've moved in many of our lights have been dimming rather annoyingly throughout the home and apartment. We've narrowed down some of the times to when the heat pump goes on, if the vacuum is going, if a saw is being used, if a fan is plugged in and running, if the dryer is running, etc., etc. The lights that dim are usually right around whatever else is being used at the same time in the house. We have many Cree LED can lights throughout the house as well as regular lighting too. The dimming happens with both types. The electrician came back out and said everything looked fine on his end and to call the utility company. So we did and they did some testing and upgraded the wiring outside to 4/0 and said the transformer was already recently replaced so we should be good with the outside wiring. This changed nothing and the dimming is still happening. So we contacted the electrician again and he said he didn't have the proper equipment to test it for a longer period of time. He wants us to go through each switch in the electrical box and try to isolate the problem ourselves. I'm wondering if anyone has a clue as to what's really going on here and why nobody can seem to fix it? Also wondering if this dimming causing problems to our electrical? I'm nervous about the effects on our appliances, etc. Is this dimming causing our electrical bills to be higher? They sure feel like it. Thanks in advance for any help!