Uneven heat distribution from Accentra Insert

I bought a used Accentra insert (manufactured Oct 2006) this summer and installed it into my home. Before I installed I disassembled everything I could and blew it out with compressed air in the garage.

Since it has been installed the right hand side seems to get hotter then the left. I was just wondering if this is normal. If you place your hands on top on either side of the pellet hopper door, the right hand side is hot while the left is just barely warm. Also the left hand "circle" in the grill decoration is putting out luke warm air and at a low volume. However the right hand circle is putting out a lot of air and much hotter. It seems like maybe something is dirty or blocked somewhere. Note: I did clean the heat exchanger tubes again last weekend, maybe not well enough?

I am also a little disappointed with how warm this is keeping house. The house is a 1948 cape cod with block walls, stucco exterior, drywall just on furring strips. I put all new pella windows in the house this summer. We are only trying to heat the downstairs area and at that we have one of the bedrooms closed off. Running at full blast it's 69 in the living room, 62 on the thermostat going back the hallway. I know the uninsulated walls are the real problem, I wasn't expecting to be walking around in shorts and a tshirt, I just thought it would do a little better then this.

Glad to know I'm not the only one with this problem. I got a chance to do a good cleaning yesterday and I wasn't getting the brush as far back as I should have been on the left hand side.

I was surprised to find wet ash all the way back on the left hand side. It was thick like a paste. I don't think water could be getting down the cap and it hasn't rained in quite a while here. Any ideas?

This didn't really changed the heat output on the stove, the left side is still cooler than the right. If I pull the stove out can I get to the area that I am pushing ash to on the left hand side? There has to be more wet ash back there if I'm pushing the brush into that side.

rickwa said:

you can take the shop vac hose (the 1 1/4 In one ) and push it through the square tube. you have to pull the plastic connector off the end first. when you push it through the left side keep working it untill u look in to the right side and see the hose end sticking through in the back corner. your tube is clogged. If you cant get hose to come all the way through it is clogged. hose will go through that tube pretty easy if it is not clogged. If this dont work pull stove out and pull trap door off on right side and you can get to the end of the tube in the back corner

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Thank you very much for the tip on that trap door. I bought the stove used this summer and although I have tried inserting the brush to what I thought was all the way before, that tube was clogged. No matter what I tried I couldn't get the brush to come out so I could see it. I finally had to use a drain snake to get through the 'clog'. After quite a while with the snake and the brush I finally was able to get the brush through. I still feel like it's pretty dirty back there and none of my shop vac hoses were able to make it through. Does anyone else have ideas on how to clean that back tube?

The stove has only been running a few hours now, but it has so much more air flow coming out of the left side, and it is hot instead of luke warm. I'm hoping this is going to make a difference on if it can keep up with the house or not.