Product review (4 stars): Looks Good and Works Fine.  Some Minor Issues With Installation and Air Removal
I'm slowly updating the kitchen and found this Broan Evolution 2 range hood to be a good upgrade.  The previous range hood was over 28 years old.  So after refinishing the cabinets using General Finishes Java Gel Stain, I installed the Broan range hood.  The installation was fairly straight forward, although not exactly easy.  I took the following steps:

1)  After unboxing, I replaced the four halogen lights with LED lights. The set I purchased was&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Bioluz-LED-5-Pack-GU10-50W-Equiv-Dimmable-6-5w-3000K-UL-listed/dp/B00XK8FL0S/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Bioluz LED 5 Pack GU10 50W Equiv Dimmable 6.5w 3000K UL listed</a>&nbsp;The halogen lights need a quarter turn to release.  Since they are flush against the underside of the hood, turning them is difficult.  Luckily they provide a suction tool that you press on and twist.  They came out easily.  The LED replacement lights were easy to place in and twist.  They were ever so slightly larger than the halogen so they protrude just a tad.  It makes them easy to grab - even though some might not like the 1/8 inch they stick out.  But they work really well.

2)  I took off the bottom panel to get access to the inside. Since I was using this unit for RECIRCULATING air (no ducting) I had to make some easy modifications. I took off a rectangular air damper and the electrical box cover.  It comes with an air diverter that must be installed.  It fits over two holes. The holes don't line up perfectly, so they have to be forced a little.  I put the unit over the hole nearest the motor and then forced it over the second hole.  Then I pressed down until it was firmly in place.  Then I put on the washers and screws.  Next, I took off the small panel which opened the path to the recirculating air vent.  I just removed the two screws  and lifted it out.  The instructions indicate to screw it down out of the way inside the unit.  Now the air will be diverted to the vent that is located at the front of the unit.

3)  My cabinets above the range hood had an inch ridge all the way around.  The hood would rest on that ridge which meant there would be a gap of about an inch before reaching the underside of the cabinets.  The screws were obviously not long enough for that.  So, I cut some wood pieces and glued and screwed them to the underside of the cabinets to fill in that gap so the range hood screws can be attached to them.

4)  I prepared the wiring that was coming out of the back wall where the range hood would be going.  I just used the same wiring that went with the previous range hood.  The Broan has two different  openings for wires - one at the top and one in the back.  The opening are located on the right side of the unit about 8 inches to the right of center.  Unfortunately, my wires were coming out of the wall on the left side, so I had to do a little modification.  The "pop-out" plug in the Broan for the wires to go through was easy to take out.  I just put my screwdriver in the little slit and wiggled it back and fourth until the metal connections gave way.

5)  I shut off power to that section of the kitchen. I moved the stove out of the way. This range hood weighs about 20 pounds or so.  Unfortunately I had no help during installation day, so I lifted it in place and put the screws in myself.  I will spare describing to you my elaborate system of boxes and books I used to prop it up enough to get those screws in. The screws were the most difficult aspect of installation. There are 5 screws - two on each side and one in the front middle.  The problem is that the unit is full of very sharp sheet metal sections and diverters and you have to try to navigate in very tight places to get the screws in.  What I did first was to lift the unit flush against the cabinet bottom and all the way back and then mark with a Sharpie the places for the screws on the four holes on the sides.  Then I screwed in the screws halfway.  I lifted the unit up - making sure the wires were coming through the hole in the back panel - and I slipped the unit over the screw heads and slid the unit back into the screw-down gaps.  The two screws on the right side are fairly accessible and I could reach up with a screwdriver and tighten them down.  The two screws on the left are behind the motor and VERY difficult to reach. I tried reaching up with a small screwdriver, but my hand kept hitting the sharp motor blades.  However, when I used a long screw driver, I had to angle it to avoid metal parts and it wouldn't connect with the screw head well.  I collected about ten different screw drivers and finally managed to find something that would work.  When the screws were all in place on the sides, then I placed the screw in the hole in the front middle.

6)  Next came the wiring.  It was very simple - black to black, white to white, ground to ground.  I used twist wire connectors. I replaced the wire cover and that rectangular damper that I took off previously.  I reinstalled the bottom panel.  After all of this installation around the sharp sheet metal inside the unit, I did have a few cuts and a little blood.

7)  Previous to the installation I bought some filters for the bottom panels since this is NOT being ducked to the outside.  Since the air is recirculated, I needed these filters to take care of the fumes and smoke from cooking.  There are the filters I purchased:&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Broan-BPPF30-Non-Ducted-Replacement-Filters-for-30-Inch-QP-Range-Hoods-2-Pack/dp/B004AA1JXI/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Broan BPPF30 Non-Ducted Replacement Filters for 30-Inch QP Range Hoods, 2-Pack</a>.  The filters come with clips.  You just clip them against the two grates that come with the unit and then snap them in place on the bottom panel.

The unit works as expected.  The lights gradually get brighter or dim lower.  I really like the lights.  The fan was a little wobbly - not bad though.  It is MUCH quieter than my old 28-year-old range hood.  The low and medium settings are fine.  The high might be a little loud but the high on this unit is about the same volume as my low was on my old unit.  So, it's much better.  One negative is that the motor is on the left side and that is where the suction is.  So, if you cook on the left side, it's great.  If you cook on the right side of your stove, it is much weaker.

I will update this review after I have a chance to use it more.  To this point, I would give it four out of five stars.  It seems to work better than my old unit and it looks very good.  The somewhat difficult installation and the inefficiency of sucking up smoke and fumes from the right side of the stove is worthy of a star deduction.  But so far so good.