Reddit mentions of Devolo dLAN 1200+ Wi-Fi AC Powerline Starter Kit (Wi-Fi 802.11 AC Extender Kit, Pass Through, 2 GB LAN Ports, 1200 Mbps) NOT FOR USE IN THE UNITED STATES

I'll go over a few of the basic methods that we've found successful. Last week we had to fit a 4 story house with a combination homeplugs and repeaters because he refused to install wiring so we got to try out some home networking equipment.

I usually push for proper cabling, but some cases wiring is not an option.

Option 1 -
Homeplugs/Powerline. IF these work they are the best option after wiring. They don't always work, it does depend on your home wiring but generally they are pretty good. All brands have a wireless kit which includes one wired and one wireless device, this is what you probably need. And you can add more wireless points around your house if needs be.

Devolos tend to be the most reliable
https://www.amazon.co.uk/Devolo-Wi-Fi-Powerline-Starter-Access/dp/B00C5IA4TW/ref=sr_1_4?s=computers&ie=UTF8&qid=1463659721&sr=1-4&keywords=devolo+homeplugs+wireless

Faster version - https://www.amazon.co.uk/Devolo-Powerline-Starter-Extender-Repeater/dp/B00OZDO8RE/ref=sr_1_1?s=computers&ie=UTF8&qid=1463659798&sr=1-1&keywords=devolo+homeplugs+wireless

Although TP Link is a good brand and are very good value

https://www.amazon.co.uk/TP-LINK-TL-WPA4220KIT-Powerline-Configuration-Smartphone/dp/B00DHB2T44/ref=sr_1_2?s=computers&ie=UTF8&qid=1463659917&sr=1-2&keywords=tplink+powerline+wifi

https://www.amazon.co.uk/TP-LINK-TL-WPA4530-Powerline-Extender-Multiple/dp/B019FM3FQY/ref=sr_1_6?s=computers&ie=UTF8&qid=1463659886&sr=1-6&keywords=tplink+powerline+ac


Option 2 New router.
Don't expect miracles with a new router unless the old router is very poor. You can put a 100 antennas on one but if there's too much interference or your walls are made of concrete they won't help much. For home purposes the brand I have had most luck with in increasing range is Asus, and its what i use at home. I have an OLD dual band one which does the job, you may look to buy an AC model.

https://www.amazon.co.uk/dp/B008O56HXC/ref=psdc_430579031_t3_B00DES2FQW

Option 3 - Wireless repeater.
WiFi repeaters do half the WiFi speed if they use the same channel to repeat. So you need to get a dual band one to maximise the speed (assuming your router is dual band also). If its AC speed even better. We used this model successfully in the 4 floor house and got very good speeds.

https://www.amazon.co.uk/TP-LINK-RE355-Universal-Extender-Adjustable/dp/B01ABNLHH0/ref=sr_1_3?s=computers&ie=UTF8&qid=1463660533&sr=1-3&keywords=tp+link+repeater


Any questions feel free to call.