Packaged Lennox 25 y. old

[bigalexk]

My packaged Lennox is almost 25 y. old. It still works fine, but furnace. The heat does not come on during evening time, from 4 pm to 9 pm. In the morning there is no problem. I’ve noticed significant shift of voltage. It is 248V during the day, but it drops under 210V in the evening. Could it be the reason and what can I do about it? Or could it be due to low gas pressure in the evening?
Alex.

[kactuskid]

Is this an electric furnace that requires 220 volts to heat. I would suggest you call your electric utility company and tell them of your symptoms. There could be a loose wire at the meter or on the pole and they will fix this for free. There could also be a large industrical company in your area that uses alot of power at night and is bleeding the system. Ask about this also.