John Small founded Small Improvements, LLC in Tucson in 2014.  Focusing solely on window replacement, John initially represented multiple window manufacturers as a local retailer-installation company until he partnered with Infinity from Marvin and started installing their fiberglass framed windows.  Vinyl windows are a huge problem for retailer-installation companies like Small Improvements in this extreme climate and John knew he absolutely had to get out of the vinyl window replacement business.  Most consumers think they are getting a life-long window replacement solution backed with an iron clad warranty.  The reality is when the vinyl frame starts to break down, the local installation company can only do so much and the fine print in the warranty will keep the manufacturer safe from liability. 


Our story is about science!  There is no window replacement product more tested and suited for our extreme climate.  We see and hear ads that claim, “made in Arizona for Arizona”.  The facts are that even if a window is assembled somewhere in Arizona, the vinyl

extrusions and other component parts are made elsewhere in the USA

or in China.  They are the same components and parts that are in all

vinyl windows assembled in the United States.  Hands down, Infinity

from Marvin’s Ultrex frame is the best value that exists.  This is an enhancement to your home that you will boast to all of your friends and family about as long as you live there.

Based on the overwhelming success in Tucson, Infinity from Marvin increased Small Improvement’s territory to encompass the Phoenix market as well.  Since John Small lives in Tucson and his showroom and warehouse are there also, he needed a partner to run and manage the Phoenix location.  Greg Johnson had previously worked with two other Infinity from Marvin retailers and spent years prior to that with Renewal by Andersen in the Seattle market.  Greg brought his son, Adam Johnson to also work in the Phoenix office.


As a consumer, I would feel very confident with Marvin’s 100+ years of innovation and John and Greg’s 35+ years of combined experience to manage your window replacement project successfully. 



© 2019 by SI Phoenix, LLC.

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Si Phoenix, LLC

4014 E Broadway Rd,

Suite 408

Phoenix, AZ 85040