We recently installed a Buderus high efficency direct vent condensing boiler in a closed furnace room. The homeowner reports significant unpleasant smells coming into the house. Ambient air testing does not show any by-products of combustion, and the company technician inspected the unit and says it is installed properly and operating properly. 


The room is enclosed and gets hot. The smell seems to be off-gassing from the unit itself and from the copper pipes. 


The install was over a month ago and the homeowner is still bothered by the smell.


Has anyone else dealt with this problem ?  What can be done?

Views: 800

Reply to This

Replies to This Discussion

It looks like this boiler could run a positive pressure inthe combustion chamer. There might be leakage in the boiler or the vent system. It could be smoke tested to visually find the leak. I have done this on other power burners. Not sure what the model is but here is a link ot a manual that you might get some ideas from.






Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network.

Latest Activity

Robyn Smith replied to Chris Woods's discussion Looking to purchase Minneapolis Blower door system- Model 3 with DG-700 in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Hi Chris, I replied to you via email yesterday. I have what you are looking for!! Minneapolis…"
15 hours ago
Profile IconJohn Gillis, William C Gilbert, Brian Breckin and 4 more joined Home Energy Pros
18 hours ago
Paul Scheckel posted a blog post

Energy Ambassadors: Cuba and Vermont

Last winter i had the pleasure of hosting a Cuban colleague for a week in Vermont. We toured the…See More
20 hours ago
Linda Wigington commented on David Eggleton's group 1000 Home Challenge
"Two more projects have recently been approved as 1000 Home CHallenge candidates. We welcome Eric…"
Colin Genge posted events
Craig McManus replied to Timothy Renz's discussion Vinyl batt to metal frame ware house
"How can I air seal a metal building in the south to keep out humid air which is causing mold? Will…"
Tom White posted a video
Profile IconJeshurun and Chris Woods joined allen p tanner's group

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service