Choosing an electric heat source for a small freestanding office/library
We’re building a 240 sqft office/study/library in the backyard for my partner to work in on a regular basis. The building has a gable roof with sloped ceilings (7′-9′). It will be highly insulated — spray foam on ceiling (R-32) and walls (R-20) with an insulated floor, a few windows and a glass-front door. We live on the border between 5A&6A in New York State.
Also (and this is different from most case studies I read about on the forums), we will be storing a large number of books on bookshelves in the space (hence the few windows), and want to avoid large temperature fluctuations for this reason. Some fluctuation is OK, but we don’t want to turn the heater completely off at night, for example…We never want the temp to get near freezing.
Of course we want the heaters to be comfortable, energy efficient as possible, and as inexpensive to operate as possible. We also want to maximize wall space for, again, the books (and tables and desks).
I’ve been reading everything I can find, but am torn between:
1) Two cove heaters
Q: Assuming we mounted these high on the wall with the recommended amount of clearance around them, but surrounded by shelves of books just below and on either side, would the heat from the heaters be hot enough to damage the paper over time? (I don’t have a good sense of how hot the units themselves are, and how they impact their immediate surroundings.
2) Electric radiant wall/ceiling panel (about 600W) or multiple radiant wall/ceiling panels.
Q1: How do you choose between mounting these on either wall or ceiling? (I’ve read of it done both ways, but no clear discussion of pros and cons.) Is it even effective to install them on a sloped ceiling?
Q2: What is a recommended vendor for these? I’ve seen the Amaze Heaters (some reviews complain of a toxic smell that won’t go away, and no one answers when I call their customer service line) and Deelat (can’t find any reviews for these). Are there other vendors I should be aware of?
3) Two Envi heaters (convection)
These seem to take up a lot of room (both for clearance and the fact that they stick out from the wall), but they’re cool to the touch and seem user friendly.
Going on our guts alone, we like the idea of the electric panel on the wall. Seems like it would take up the least space, and blend into the background the best, and provide the least negative impact to the books. If we were able to ceiling mount, all the better. But I can’t find much discussion of people actually using them, or the pros and cons.
Would love any discussion and input you may have! Thanks.
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