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HVAC question Jim 10-18-2009
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Posted by Jim on October 18, 2009, 8:54 pm


Hello,

I have a 2600 sq ft 4 level split home in Canada. It was built in
1985. This past spring we replaced our very non-effecient furnace with a
Tempstar 95% effecient gas furnace. It really is wonderful as the old
furnace would cause the house to feel sort of drafty and basement was always
cold etc... Now I have this furnace that I love to bits BUT now since it has
gotten colder outside these past two weeks, we have kept the doors and
windows closed and now have a high humidity problem inside the home IE:
fogged up windows (triple pane)...air basically feels clammy...bought a
humidistat and the house is sitting at around 50% humidity.... we use
bathroom fans in the shower, and have a fan over the stove when cooking that
we use all the time...we keep lids on pots on the stove etc...We have no
children and only the two of us in this home so no long lingering showers by
kids or anyone else....
I don't want to have to buy a dehumidifier over this new furnace..
sort of defeats the idea of trying to be energy effecient... Thinking of
trying to duct in an outside air source to feed the furnace?
Thoughts? Thanks... Jim



Posted by on October 18, 2009, 9:00 pm



>Hello,
> I have a 2600 sq ft 4 level split home in Canada. It was built in
>1985. This past spring we replaced our very non-effecient furnace with a
>Tempstar 95% effecient gas furnace. It really is wonderful as the old
>furnace would cause the house to feel sort of drafty and basement was always
>cold etc... Now I have this furnace that I love to bits BUT now since it has
>gotten colder outside these past two weeks, we have kept the doors and
>windows closed and now have a high humidity problem inside the home IE:
>fogged up windows (triple pane)...air basically feels clammy...bought a
>humidistat and the house is sitting at around 50% humidity.... we use
>bathroom fans in the shower, and have a fan over the stove when cooking that
>we use all the time...we keep lids on pots on the stove etc...We have no
>children and only the two of us in this home so no long lingering showers by
>kids or anyone else....
> I don't want to have to buy a dehumidifier over this new furnace..
>sort of defeats the idea of trying to be energy effecient... Thinking of
>trying to duct in an outside air source to feed the furnace?
> Thoughts? Thanks... Jim

50% RH is "high"?


Posted by Tony Hwang on October 18, 2009, 9:08 pm


gfretwell@aol.com wrote:
>
>> Hello,
>> I have a 2600 sq ft 4 level split home in Canada. It was built in
>> 1985. This past spring we replaced our very non-effecient furnace with a
>> Tempstar 95% effecient gas furnace. It really is wonderful as the old
>> furnace would cause the house to feel sort of drafty and basement was always
>> cold etc... Now I have this furnace that I love to bits BUT now since it has
>> gotten colder outside these past two weeks, we have kept the doors and
>> windows closed and now have a high humidity problem inside the home IE:
>> fogged up windows (triple pane)...air basically feels clammy...bought a
>> humidistat and the house is sitting at around 50% humidity.... we use
>> bathroom fans in the shower, and have a fan over the stove when cooking that
>> we use all the time...we keep lids on pots on the stove etc...We have no
>> children and only the two of us in this home so no long lingering showers by
>> kids or anyone else....
>> I don't want to have to buy a dehumidifier over this new furnace..
>> sort of defeats the idea of trying to be energy effecient... Thinking of
>> trying to duct in an outside air source to feed the furnace?
>> Thoughts? Thanks... Jim
>
> 50% RH is "high"?
>
Hi,
Yes, for the Canadian winter temp.

Posted by Jim on October 18, 2009, 9:10 pm



>>Hello,
>> I have a 2600 sq ft 4 level split home in Canada. It was built in
>>1985. This past spring we replaced our very non-effecient furnace with a
>>Tempstar 95% effecient gas furnace. It really is wonderful as the old
>>furnace would cause the house to feel sort of drafty and basement was
>>always
>>cold etc... Now I have this furnace that I love to bits BUT now since it
>>has
>>gotten colder outside these past two weeks, we have kept the doors and
>>windows closed and now have a high humidity problem inside the home IE:
>>fogged up windows (triple pane)...air basically feels clammy...bought a
>>humidistat and the house is sitting at around 50% humidity.... we use
>>bathroom fans in the shower, and have a fan over the stove when cooking
>>that
>>we use all the time...we keep lids on pots on the stove etc...We have no
>>children and only the two of us in this home so no long lingering showers
>>by
>>kids or anyone else....
>> I don't want to have to buy a dehumidifier over this new furnace..
>>sort of defeats the idea of trying to be energy effecient... Thinking of
>>trying to duct in an outside air source to feed the furnace?
>> Thoughts? Thanks... Jim
> 50% RH is "high"?

I guess to me it is...I also have an indoor swimming pool in the back yard
(not attached to house) and I keep the RH in that building to 30-35%...I
park my BMW in the same building with no issues.... Jim



Posted by on October 18, 2009, 9:54 pm



>>>Hello,
>>> I have a 2600 sq ft 4 level split home in Canada. It was built in
>>>1985. This past spring we replaced our very non-effecient furnace with a
>>>Tempstar 95% effecient gas furnace. It really is wonderful as the old
>>>furnace would cause the house to feel sort of drafty and basement was
>>>always
>>>cold etc... Now I have this furnace that I love to bits BUT now since it
>>>has
>>>gotten colder outside these past two weeks, we have kept the doors and
>>>windows closed and now have a high humidity problem inside the home IE:
>>>fogged up windows (triple pane)...air basically feels clammy...bought a
>>>humidistat and the house is sitting at around 50% humidity.... we use
>>>bathroom fans in the shower, and have a fan over the stove when cooking
>>>that
>>>we use all the time...we keep lids on pots on the stove etc...We have no
>>>children and only the two of us in this home so no long lingering showers
>>>by
>>>kids or anyone else....
>>> I don't want to have to buy a dehumidifier over this new furnace..
>>>sort of defeats the idea of trying to be energy effecient... Thinking of
>>>trying to duct in an outside air source to feed the furnace?
>>> Thoughts? Thanks... Jim
>> 50% RH is "high"?
>I guess to me it is...I also have an indoor swimming pool in the back yard
>(not attached to house) and I keep the RH in that building to 30-35%...I
>park my BMW in the same building with no issues.... Jim


They run computer rooms at 50%. I guess I am just more used to a
higher number in a home. I just looked and it is 44% in here right now
and my lips are cracking and my throat feels dry..


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