For good quality copper, with low impuities that discolor it weirdly, you are looking at 10K+ for insert and shroud. Yes, it ages naturally, if you don’t want it clear-coated.

I had one in a former house; it came with the house. I didn’t clean it for awhile, and it turned kinda green, plus was greasy as the fan didn’t work well. Anyway to clean it thoroughly I had to scrub it back to the copper color — not shiny bright like a new penny though, except, it wasn’t like I could exactly control how consistently I could control the resulting color. aging” I then cleaned it regularly, so it would look more homogeneous, not having to scrub any build up. I doubt this was a major super-quality copper, if there are lower- tier ones out there.

Copper will gradually oxidize from shiny to paper-bag brown or darker. More or less uniformly brown, unless it is exposed to water or cooking levels of heat which greatly accelerate the oxidization.

You can keep copper shiny with copper creams, preferably non-abrasive to preserve the polish as much as possible: Wright’s Copper Cream is good, Twinkle is just a tiny bit abrasive, BarKeepers Friend is more abrasive. However, you have to wipe on the cream, rub it to remove the oxidization, clean off the cream with soapy water, then dry the copper. Sounds like a pain if the hood is large. Then do it again in a couple months to several months, depending on humidity and how often the hood gets touched.

You can use a buffer to make and keep copper polished. It wouldn’t be much more work than the cream.

If I had a copper hood, I’d either let it go brown or take a buffer to it every couple months to keep it highly polished.

You can also spray copper with lacquer to stop oxidization and preserve the shiny look. On a hood which presumably doesn’t get wet or touched much, I think lacquer would last a very long time.

If your spouse, child, or housecleaner ever takes a green scrubby to the polished copper hood, most states permit you to kill them on the spot - it is a defense to any murder charge. Oregon is not one of those states, so when my son used a green scrubby to scratch the living daylights out of my copper pots I made him sit at the buffing wheel with polishing compound and a stack of pots until they were all somewhat polished again. Took him two days.

@ John Liu LoL that is right up there with cast iron in the dish washer.

The bacon frying boys in my family have ruined two copper tea kettles by not moving them from the back burner when frying on the front burner. No amount of cream of tartar, dawn or brasso would fix them. So while I have lots of copper accessory, I would not want an unlacquered Vent a Hood.

I think if you have nothing better to do with your time get it . IMO a nice stainless hood is the way to go , yes it still needs cleaning but a simple job and not the cost of a small car in both upfront cost and the time to keep it pretty . Use copper for some nice accents and give yourself a break on the massive job of keeping that hood looking new ..I love my copper pots but honestly they are used daily and not shiny anymore and I think I might send them out to be cleaned and brought back to the new look someday .since I have not found the magic stuff to clean them well at home .

Copper has a tendency to take over a kitchen. Every time you add something made of metal you have to determine if it's going to be copper or are you going to select a metal that will play nice with the copper. A copper hood would likely indicate a TRADITIONAL KITCHEN STYLE.

A kitchen with a lonely copper hood and a few copper door handles doesn't look like a cohesive plan to me.

Kitchens with successful copper hoods have brick on the wall, wood on the floor, painted or stained cabinets. These kitchens are $$$$. People who decide to invest in a copper hood kitchen have HELP & live in million $$ homes. Don't plop a copper hood in a home worth $450K.

My mom had Revere pots with copper bottoms from the time she was married to when she died at 98 years old. Every time she used a pot, the bottom was thoroughly cleaned with Twinkle until it looked like new. When I lived there I was taught the 'right' way to clean the copper. Those pots and pans live on in my sister's home. I don't have copper pots or pots with copper bottoms, and I wouldn't ever want a copper range hood that I had to maintain with Twinkle!

Copper - just the raw metal - is also quite expensive. Most copper vent hoods are custom or semi-custom. I’ve seen prices of $5,000 and I don’t think that was the high end.

I recently had 80 feet of custom copper lineset cover made. The cost was . . . high. A 4’ x 10’ sheet of 22 mil ”16 oz” copper is over $400 now.

I used to dream of getting a standing seam copper roof on my house. Not gonna happen. Not for $60,000.

By the way the US just slapped a 50% tariff on imported copper. That 4' x 10' sheet was $250 a month ago.