Still getting condensation three weeks after PIV installed

Doubleshotdamo

Son's room this morning. The piv blows in the direction of his room. 
Similar amount in our bedroom and downstairs. 

Matt_OX4

I think on a day like today where it's -5c outside (at least it is here) then you will always get some condensation - my electrician is here installing our PIV right now so I am hoping to see some improvement over our baseline, which is windows like yours but on any day where it is less than 5c and not windy. Our 1950s house just doesn't breathe, because the previous owners blocked every vent and chimney.

Ben1989

That's way too much condensation. Turn it to max. I know it's cold but close your doors. My house doesn't get that cold just on the landing.

Doubleshotdamo

Ben1989 said:

That's way too much condensation. Turn it to max. I know it's cold but close your doors. My house doesn't get that cold just on the landing.

Not only will it be freezing, it will be noisy too. 

Effician

Doubleshotdamo said:

Ben1989 said:

That's way too much condensation. Turn it to max. I know it's cold but close your doors. My house doesn't get that cold just on the landing.

Not only will it be freezing, it will be noisy too. 

Plus you would have to heat 250m3 of freezing air every hour just to see it squeezed out of any gap to the outside, i guess some folks just turn up their heating to counter this.

Doubleshotdamo

Effician said:

Doubleshotdamo said:

Ben1989 said:

That's way too much condensation. Turn it to max. I know it's cold but close your doors. My house doesn't get that cold just on the landing.

Not only will it be freezing, it will be noisy too. 

Plus you would have to heat 250m3 of freezing air every hour just to see it squeezed out of any gap to the outside, i guess some folks just turn up their heating to counter this.

Yes, if the condensation problem was remedied, I'd be OK with it, but it's not. I'll give it a week or two and if no improvement, I'm going to uninstall it! 

rob7475

That's a lot of condensation. In weather this cold, you should expect to see a little more than usual. We had a couple of inch at the bottom of the bedroom windows this morning but it's cleared now. Ours used to be like that before we installed PIV.

The fact that your getting it downstairs is a bit odd. We only get it in the bedrooms as that's where we're sleeping and breathing out a lot of moisture. Have you got anything you can check the humidity level in your house with? 

PIV should push air out of the "leaky" bits of your building. If your house is particularly well insulated and sealed up, it may not be able to move the air out to create a constant flow of fresh air. Do you have any trickle vents you coule leave open?

It may be worth a chat with Nuaire's tech support - they may be able to offer some advice on what you can do to improve things.

Effician

Doubleshotdamo said:

Effician said:

Doubleshotdamo said:

Ben1989 said:

That's way too much condensation. Turn it to max. I know it's cold but close your doors. My house doesn't get that cold just on the landing.

Not only will it be freezing, it will be noisy too. 

Plus you would have to heat 250m3 of freezing air every hour just to see it squeezed out of any gap to the outside, i guess some folks just turn up their heating to counter this.

Yes, if the condensation problem was remedied, I'd be OK with it, but it's not. I'll give it a week or two and if no improvement, I'm going to uninstall it! 

If condensation is predominately on the windows you may want to see why the internal panes are dropping below dew point, once you understand that then a solution should be easier to find.

We found by blocking the trickle vents & introducing circulating fans our condensation issue reduced dramatically, the reason being we had ( even with ventilation)limited air movement in the house in the areas it was needed & the trickle vents cooling effect on the internal panes dropped the temps well below dew point  even with low humidity.

Lots of different scenarios for many types of homes & unfortunately it's not a one size fits all.

Doubleshotdamo

rob7475 said:

That's a lot of condensation. In weather this cold, you should expect to see a little more than usual. We had a couple of inch at the bottom of the bedroom windows this morning but it's cleared now. Ours used to be like that before we installed PIV.

The fact that your getting it downstairs is a bit odd. We only get it in the bedrooms as that's where we're sleeping and breathing out a lot of moisture. Have you got anything you can check the humidity level in your house with? 

PIV should push air out of the "leaky" bits of your building. If your house is particularly well insulated and sealed up, it may not be able to move the air out to create a constant flow of fresh air. Do you have any trickle vents you coule leave open?

It may be worth a chat with Nuaire's tech support - they may be able to offer some advice on what you can do to improve things.

Humidity level in our bedroom was 65% last night. We don't have trickle vents. 

Doubleshotdamo

Effician said:

Doubleshotdamo said:

Effician said:

Doubleshotdamo said:

Ben1989 said:

That's way too much condensation. Turn it to max. I know it's cold but close your doors. My house doesn't get that cold just on the landing.

Not only will it be freezing, it will be noisy too. 

Plus you would have to heat 250m3 of freezing air every hour just to see it squeezed out of any gap to the outside, i guess some folks just turn up their heating to counter this.

Yes, if the condensation problem was remedied, I'd be OK with it, but it's not. I'll give it a week or two and if no improvement, I'm going to uninstall it! 

If condensation is predominately on the windows you may want to see why the internal panes are dropping below dew point, once you understand that then a solution should be easier to find.

We found by blocking the trickle vents & introducing circulating fans our condensation issue reduced dramatically, the reason being we had ( even with ventilation)limited air movement in the house in the areas it was needed & the trickle vents cooling effect on the internal panes dropped the temps well below dew point  even with low humidity.

Lots of different scenarios for many types of homes & unfortunately it's not a one size fits all.

We don't have trickle vents.