My outside compressor was making an buzzing noise but the unit was otherwise working.. I believe it was the contactor.... when I moved the contactor with my screwdriver the buzzing would either stop or change frequency. I put a new one in and it seems to have stopped but I wanted to assure I didnt mask a bigger issue. Can I assume the contactor is the problem and not elsewhere because the unit was working and cooling?

This isnt my actual link but this is the air conditioner I am replacing [URL="https://gardencity-mo.americanlisted.com/ad/gallery/24799889/"]Air Conditioner[/URL]. It looks like it is 18000 btu and has the side vents like it might be a window unit?! Mine is through the wall currently and came with my home. I don't have air in my house, hence such a large unit. So this unit has been cooling my entire downstairs. It does a good job, but the knob is broken off of it and the only way to turn it on is unplugging and plugging it in. Just that alone isn't very safe for my kids with such a big outlet. And its not very energy efficient and its loud. So I want to replace it. I can't seem to find any 18000 btu specific through the wall units. Could I use a window unit if the side vents clear the hole in the wall? I only have Vinyl siding, so the wall isn't very thick. No brick or cinder block to extend the wall. If not, I was looking at these two units. [URL="https://www.homedepot.com/p/Emerson-Quiet-Kool-14-000-BTU-230-Volt-Through-the-Wall-Air-Conditioner-with-Remote-Control-EATC14RD2T/309740805"]Unit 1[/URL] And [URL="https://www.homedepot.com/b/Heating-Venting-Cooling-Air-Conditioners-Wall-Air-Conditioners/N-5yc1vZc4md?browsestoreoption=2&Nao=48&Ns=None&storeSelection=4915,4920,4928,4903,4924"]Unit 2[/URL] These were the closest ones to fit my current hole in the wall but are only 14000 btu. Would that be enough to cool my downstairs? I have a pretty large downstairs, Living room, Dining room, kitchen, foyer, hall way with laundry room and bathroom... Thanks!