Turn window blinds up or down? An industry expert advises!

window blinds turned down in a kitchenWhen we asked readers should toilet paper go on the roll “over” or “under” (as if!), reader Steve was agnostic on the issue. However, he flagged another vexing question — should horizontal window blinds be turned up or down? I asked the experts at Hunter Douglas, and yup, now everything is illuminated. Their complete response is below, but in summary:

Reasons to turn your window blinds up:

  1. Directs light and heat up to the ceiling. A good strategy for summer, when you want to keep room cooler — could help cut air conditioning bills.
  2. Folks outside usually are less likely to see into your house
  3. On the flip side (pun!) the ‘con’ is: Less aesthetically pleasing.

Reasons to turn your blinds down:

  1. Tilting the window blinds down directs light and heat into the heart of the room. This may be a good strategy for the winter, when you want to warm the room.
  2. Tilt them down, and the blinds look “softer” and arguably, “better”.
  3. Blinds turned down it may make it easier for peeps to peep in.

Steve wrote:

The real question is how blinds should be closed – concave side facing in or out. Believe me; this is a very contentious issue in my household.

aluminum window blinds openI installed classic old-school Hunter Douglas aluminum horizontal window blinds in my kitchen.

Because I’m a fan of the product — and because I know that Hunter-Douglas is a longtime industry leader, I contacted the PR folks there to see if they could find a company expert to provide us with a bona fide scientific answer, and they did….

window blinds turned up and down in a kitchen
HunterDouglas “Reveal” aluminum blinds

Bobby Dill, General Manager of the Hunter Douglas Horizontal Blinds Division, provided this assessment of the pros and cons of how to angle the slats on horizontal window blinds aka in the postwar days as “venetian” blinds:

It really is consumer preference, although we know that turning the slats upward (front edge of the blind upward) usually provides more privacy, less light into the room, and minimizes heat transfer into the room…. Closed in the inside up direction, blinds may not have as soft an appearance, but there is greater control of daylight entering the room.  Sunlight and some radiant energy will be deflected upward and away from the room.  This benefit is especially relevant in places like offices, where there can be substantial energy savings derived from maximizing that amount of natural lighting in the space.

With that said, tilting to the front (front edge of the blind down) provides the most aesthetic benefit, but will admit more light through the small gaps where slats overlap because of the angle of sunlight on the window.

Really, it comes down to personal preferences and the particular situation.  Horizontal blinds provide benefits and functionality when tilted in any position.  There is no “right” or “wrong ” way go.

Thank you, Mr. Dill. 

horizontal window blinds on a mid century house
Horizontal window blinds were super common in mid century homes — they are even an element that adds to the curb appeal. Go for the 2″ window blinds in metal or wood — not the thinner ones.
window blinds layered under pinch pleat draperies in a living room
I am also a #1 fan of layering pinch pleat draperies, hung on a traverse rod, ideally, over horizontal blinds — a great look for a living room. 

Hey, I learned from this, Steve! Duh. I didn’t know. 

So, Steve… does that help? Readers?

  1. Byd says:

    There’s not so much information- opinions- or solutions for horizontal blind and vertical blind direction for those living in a high rise with two floors above and two below- and a building relatively close on one side. LOVE my condo (garages & elevators such a plus!)- but privacy a factor when wanting to take advantage of lovely views without being on display! Which way for in-the-middle folks???🤔

  2. Gail Newman says:

    Thank you for this post. I had vintage blinds in my last house and wanted them for the home we recently moved into. I found a Hunter Douglas business and just ordered these for my kitchen and bedroom windows. I turn them up during the summer and during the winter either furn them down or raise them.

  3. Pat says:

    I like to turn mine up most of the time, doesn’t make it quite as dark as you don’t have to shut them entirely to get the glare out of the room. I love the 2″ blinds, have the originals in one room in my house, would never switch just so they match all the other rooms. But can’t afford to buy all new blinds either.

  4. Cardboard Shoji sun screens. says:

    To cut the heat from my large single pane west facing window, I have cut 3 large panels from a refrigerator box to slide lengthwise along sill against the glass. Imagine sliding Japanese Shoji screens. The light brown non- printed sides of the cardboard, which slightly overlap, face the street and really can’t be seen. When in place, I then close my curtains and because the cardboard is corrugated it is a fantastic heat barrier. At night I slide the two pieces back against the third and can allow the cooler evening light in or allow for an open a window in that section if needed. Very reasonable and very effective!! In the winter I store the 3 panels in the garage. I have labeled and numbered on the inside of the panels as well, so easy for use next year. This can also be done for any window where the sun hits.

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