HELP! Harman Insert Too Hot

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HottieTottie

New Member
Nov 12, 2011
13
Northwest NJ
Greetings,

We just bought a house in the woods w/ Harman high-efficiency woodstove insert in the fireplace --previous owners said it was three years old -- it's like they never used it, provided us with records of chimney cleaning, etc. The stove is in a custom-built open-space kitchen/sitting area w/ a hallway/utility room (about 800 square feet) and I am finding that it makes that area way TOO HOT while the back half of the house (traditional ranch style) is TOO COLD. I don't know which is worse -- the hot or the cold but if I had to choose, I'd say too hot is worse.

Anyway, My husband said that he thinks he can tap into the stove and run venting pipes (similar to what they use in forced hot air) underneath the flooring through the crawl space and then cut vents in each floor of the living room, bedrooms, and bathrooms in the back half of the house to distribute the heat of the Harman more evenly--also about 800 square feet.

My husband is a master craftsman/carpenter so I don't doubt he could do the job. The thing is...his expertise is not in home heating, per se, but he did always service/maintain the boiler in our old house -- but that was oil/baseboard heat, and well, he sometimes takes on more than he can reasonably do and then it's frustrating watching him muscles his way through the obstacles he did not foresee.

Plus like many men, he has difficulty asking for directions. ; ) So I'm asking instead:

Do any of you have experience with a similar project? What problems did you run into? What, in retrospect, do you wish you had done differently? What considerations do we need to factor? Any recommendations from whom to buy the materials? Any other thoughts/warnings/suggestions?

Thank you!
 
Altering the stove is not gonna be the way to approach this issue. Have you tried to move the cold air from the outlying rooms toward the stove? If you alter the stove you will severally hinder it's ability to burn efficiently, and have a big risk of spreading smoke/fire to your ductwork.
 
Before you make alterations try placing small box fans at floor level to move the cooler air from the cold areas toward the room the stove is in. It will set up a convection current where the warm air moves out high as it is replaced with the cooler air low. And will bring the temp in the area with the stove down at the same time.

It will give you an idea of whether you need to do other things before you go cutting up your house and raising Home Depot's stock price.
 
I don't think he intends to alter the stove itself -- I *believe* he's thinking to tap into the chimney (?). Haven't tried moving cold air from the back half of the house (-- that's the long traditional "ranch" section of the house -- one long hallway with rooms off the hallway) but have tried just using a fan to send some of hot air toward the bedrooms -- that works o.k. for the first two rooms at the beginning of the hallway, but does nothing for the end rooms.
 
Definitely try the fan trick with a box or table fan. This can work particularly well for ranch homes. Run it on low speed. If you can post a sketch of the floor plan we can help a bit more with placement.

Also, try burning smaller fires. Get it going with a few splits and then let the fire die down and go out. The weather is too mild still to run the stove with a full belly. Save that for next month.
 
Oh, wait! I think I misunderstood! Are you both saying use box fans in the cold part of the house to move the cold air TOWARD the heat? And then heat rises, right? So you're saying if we blow cold air toward the heat, it might rise and gravitate toward the cold area? Aha! That would make sense!
 
HottieTottie said:
Haven't tried moving cold air from the back half of the house -- but have tried just using a fan to send some of hot air toward the bedrooms --

Most of us have found moving the cold floor air towards the stove works better than trying to move the warm air - try reversing your above method and see if it helps.
 
HottieTottie said:
Oh, wait! I think I misunderstood! Are you both saying use box fans in the cold part of the house to move the cold air TOWARD the heat? And then heat rises, right? So you're saying if we blow cold air toward the heat, it might rise and gravitate toward the cold area? Aha! That would make sense!

Yes, what you are creating is a simple convective current by working with nature. Blow cold air, low and near the floor, toward the stove room. It will cool the stove room down and warm air will migrate back to the cooler area. It works quite well and is easy to try out.
 
:coolsmile: OMG! IT'S WORKING GREAT! I put one box fan at the furthest end of the hallway and one at the end nearest the stove room both blowing TOWARD the stove. The open space sitting area/kitchen/hallway/utility room are a nice temperature and the back half of the house is warm! Even my husband said it's incredible! Wow! Thank you! You guys are the best! Now...should I leave all the doors to the rooms in the back half of the house open if I want them warm? And why did someone say low speed for the fans? Didn't catch that till I re-read this thread. I've got them on medium now...
 
Great, good to hear it's working. I said low speed on the fans. It's quieter and more comfortable to have the fans on low speed. There's little to be gained by pushing the air harder. Think of it as assisting nature, not forcing it. Yes, leave the doors open for a better distribution of the heat.
 
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