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We will be installing an under-cabinet range hood. The duct work is already in place with a vent through the roof. It seems to have been put in by the builder and left unused.
We just removed the existing microwave over the range. We found a hole in the wall looking into some sort of duct. It's rectangular and doesn't seem related to the duct work for the hood, which starts directly above the cabinet and is round. We can't tell for sure how large this duct is. I dropped a straw in it and seemed to stop before the top of the range. There is nothing but a closet behind the wall. Can we just patch this up before the someone comes to do the installation? Not sure why it's there, and if possible we'd like to paint beforehand. Any ideas as to what this could be?
Also, a contractor quoted us $500 to install the hood, which seems super high to us since the duct work is already in place. Does this seem reasonable? We thought we'd call some electricians; now we're not sure if an HVAC person should take a look instead?
EDIT: I'm sorry. I just noticed the photos are upside down. Please tilt your head or turn your computer over while looking.
Rangehood has rear or top discharge. It's more efficient to discharge from top but rear work as well. You may need to change the configuration of the new range hood. What model is it? Look at the manual.
I'm sorry if I did not explain myself clearly. We have instructions to hang the new hood and it will vent out the top. That part is set.
My question is why there is an existing hole behind the current microwave looking into a separate duct and if anyone has seen that before. That hole is below where the new hood will hang (the new hood will be inside the cabinet - the microwave hung under it) and as far as we can see doesn't vent anywhere. It needs to be covered. Just wondering if there was any insight to its purpose since the microwave recirculated and did not vent outside.
I'm sorry if I did not explain myself clearly. We have instructions to hang the new hood and it will vent out the top. That part is set.
My question is why there is an existing hole behind the current microwave looking into a separate duct and if anyone has seen that before. That hole is below where the new hood will hang (the new hood will be inside the cabinet - the microwave hung under it) and as far as we can see doesn't vent anywhere. It needs to be covered. Just wondering if there was any insight to its purpose since the microwave recirculated and did not vent outside.
That hole was where
1. The microwave was venting to or.
2. The microwave simply covered that hole when someone replace the original small range hood that was there.
I do question your statement that new hood will be inside the cabinet.. That's the confusing part for me.
I think you're right and they just didn't use it, who know why. Thanks.
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