Value For Price
I really appreciate the simplicity of install and operation of this relatively inexpensive UV Air Purifier.<br /><br />First of all, all those that have issues with the templet ---- Buy a decent Tape Measure ----learn how to Read, Measure and Use the Tape Measure or, at the very least, find someone knowledgeable that can Show You How to Read and Use a Tape Measure  ---- The Tape Measure IS your Friend...<br /><br />A few extremely Simply measurements will save a Ton of ill reviews.  After I Measured and RE-Measured the base unit and compared it to the template, I felt I was 99.997% accurate and confirmed the manufactures template measurements were very very close ... using a digital caliper I was able to get within .030 of the pencil marks I made on the template ---- close enough for the girls we dated in High School ----  utilizing a piece of standard 3/4 inch painters masking tape --- I again measured, with a tape measure, the EXACT Center of my "After A-Coil  Duct"  and carefully -- but skillfully -- using an ULTRA FINE TIP SHARPIE, marked the center location on the Duct --- using very Simple Math (not common-core bs) I found the distance from the Center of my Duct to the Center of the lamp holder on the base unit and the Center of the Hole on the template and marked the duct carefully....I did this for BOTH Lamp Holes.... Being in the Electrical Service field for many years, I had thee exact size hole saw required AND  recommended by the manufacture --- Buuutttt -- I choose to error on the side of caution and use a 1/4inch larger diameter hole saw ---- juuusssttttt incase my "math" was off a little ( I had some adhesive backed foam tape I was prepared to use IF the holes were too far off or out of round ).<br /><br />I gingerly drilled a pilot hole with a #35 drill bit for the Center of Each Lamp in the Duct and taped the manufactures templet to the duct utilizing the measurements previously mentioned ----- I was astonished and to my amazements the Tape Measure I used earlier to measure the locations of the center of the holes were Spot on to the Template!!!!  Henceforth, and with wild abandon, I installed a Hole saw in my Cordless drill and drilled through the ductwork above the A-Coil --- being extremely careful NOT to let the hole saw cut all the way through the thin sheetmetal,  --- I didn't want to play "go fish" for the cutout in the bottom of the duct ----- I cut through about 2/3rds - 3/4s of the duct and used a pair of pliers to bend the cutout back and forth until it separated from the duct and removed the "burrr" with a piece of emery cloth.<br /><br /> The mounting screws used to fasten the unit to the duct didn't fit holes in the unit ----- soooo, again using the tape measure and a sharpie, I carefully but strategically measured and marked the mounting hole location on the duct, and used a #35 drill bit to predrill the holes for the mounting screws----- again spot on ---  once the mounting screw holes were drilled I placed the unit on the duct and made sure ALL the mounting Holes lined up ---- if they didn't line up, I feared it would be a "Do Over" either above or below or left or right of my original measurements.... no big deal, after reading many ill reviews of the mounting template being off -- I was prepared for the worse --- adjusting my location ----whew--- luckily all was good, due to my superior tape measuring capabilities.<br /><br />I used latex gloves and installed the lamps into the lamp holder being extremely careful to avoid touching either lamp.  Everything lined up and after using extreme care utilizing the manufacture supplied screws, I mounted the Unit to the Duct and plugged the unit in.<br /><br />Oh Man !!  All Good !!<br /><br />Unit powered up, and has been working non-stop since install.  Eventually I will install a current switch or air-flow switch to regulate the lamps power up when the blower energizes during heat cycles or cooling cycles.<br /><br />I gave this 4 Stars because I don't know the longevity of the lamp life based on how often it will cycle on...we will see<br /><br />I really hope this is a helpful review for all those DIY'rs.
Rating: 4 stars