There can be many reasons. We take a systematic approach by starting with your internet provider and test the speed of the service and compare that to what you're paying for. Next we complete a site survey to check signal strength and for other problems.
That depends on what we're doing. Check out our services pages for more details on cost. We can tell you we are considerably less expensive than a Geek Squad or other large service provider.
Most of the time we find the main issue is with either the internet service provider or the equipment (router / wireless access point, etc) they provide.
This depends on how much bandwidth your home needs. Some homes are fine with the provided ISP equipment with some minor tweaks. Other homes with several people conducting remote office and learning at the same time usually need upgraded equipment.
Yes we can but we prefer to get a good understanding of your network requirements and where your family will use your WiFi. In some cases a mesh system is needed but in other cases a single access point will suffice. When we complete our initial testing we can show you the results and allow you to make an educated purchase if you want to replace your current access point.