Heat transfer from living room and demand control ventilation

Bandygirl

Hi folks, I have two questions regarding our 80s bungalow. at this time of year I’m reminded of issues we have been having the last couple of winters. After buying the house we did a referb on a tight budget and we pumped the wall cavity and insulated the roof and used air tightness where possible when replacing the windows and doors and ceilings, light fixtures etc. we now have a house that heats quickly off our 25kw back boiler stove after half an hour of oil to get things moving along the rads . My question is, can the hot air in the living room be transferred to the rest of the house? Our bungalow is a split level along the length of it, one side is normal height ceilings kitchen two bedrooms and an entrance hall all south facing. the other side, utility two bedrooms and a bathroom and living room is eleven foot ceilings, the stove has exposed pipe all the way to the ceiling. I’d love to be able to transfer this heat to bedrooms hallway etc or have some way of circulating the air around the house so the humidity is more balanced and reduced. My other question is has anyone used dcv on an older bungalow. We don’t have any mold issues thanks to an obsessive window opening routine. but the main bugbear is window condensation. The bedrooms are small and the condensation on cold nights is annoying. In an ideal world I’d like to make the most of the warm dry heat in the living room, get air moving across the house (which is difficult because of its shape being a long typical 80s bungalow) and a reduction in internal humidity. There are systems in Oz NZ that are specific to this kinda idea but I can’t find anything this side of the globe. https://www.bunnings.co.nz/heat-trans-1-room-heat-transfer-kit_p00713214
Thanks in advance

listermint

Condensation on windows.

Do you have ventilation in any of these rooms currently?

Bandygirl

listermint wrote: »

Condensation on windows.

Do you have ventilation in any of these rooms currently?

Just a trickle vent on a window in two bedrooms. Both the vents are Southeast facing. Their at the furthest end of the house there is another box room and a bathroom between one and the sitting room and the other is after a bedroom and then the kitchen which is parallel to the sitting room

listermint

Bandygirl wrote: »

Just a trickle vent on a window in two bedrooms. Both the vents are Southeast facing. Their at the furthest end of the house there is another box room and a bathroom between one and the sitting room and the other is after a bedroom and then the kitchen which is parallel to the sitting room

so you have no other ventilation in the house?

As part of your air control plan did you count for ventilation inside each room?

This is an important aspect of it, when people think of airtightness sometimes they just go off the wall with tapes and insulation etc. But dont account for controlled air in / and out of the dwelling.

There should be no requirement to be opening windows for this

Metric Tensor

Also - just to be clear - do you have a vent in the room with the stove/fire? This is a VERY important safety issue.

eagnaee

Bandygirl wrote: »

Hi folks, I have two questions regarding our 80s bungalow. at this time of year I’m reminded of issues we have been having the last couple of winters. After buying the house we did a referb on a tight budget and we pumped the wall cavity and insulated the roof and used air tightness where possible when replacing the windows and doors and ceilings, light fixtures etc. we now have a house that heats quickly off our 25kw back boiler stove after half an hour of oil to get things moving along the rads . My question is, can the hot air in the living room be transferred to the rest of the house? Our bungalow is a split level along the length of it, one side is normal height ceilings kitchen two bedrooms and an entrance hall all south facing. the other side, utility two bedrooms and a bathroom and living room is eleven foot ceilings, the stove has exposed pipe all the way to the ceiling. I’d love to be able to transfer this heat to bedrooms hallway etc or have some way of circulating the air around the house so the humidity is more balanced and reduced. My other question is has anyone used dcv on an older bungalow. We don’t have any mold issues thanks to an obsessive window opening routine. but the main bugbear is window condensation. The bedrooms are small and the condensation on cold nights is annoying. In an ideal world I’d like to make the most of the warm dry heat in the living room, get air moving across the house (which is difficult because of its shape being a long typical 80s bungalow) and a reduction in internal humidity. There are systems in Oz NZ that are specific to this kinda idea but I can’t find anything this side of the globe.
Thanks in advance

many would say focus on improving the insulation of the exterior walls, what is known as the thermal envelope. DCV or MHRV may help but mainly for ventilation.

Sausage dog

I've seen a system whereby the warm air from your stove is ducted in the attic to other rooms in the house and enters these rooms via vents . Is this what you are looking for?

Markcheese

There was somebody on done deal with a fan system with a couple of thermostats in, to move warm air from one room to another, but make sure youd have carbon monoxide alarms in both rooms,

Bandygirl

That’s my concern and issue lads thanks. The rooms have no ventilation other than the trickle vents in two rooms and us opening the windows daily . The airtightness was done to windows by the plasterers and there is no air source or vent in the stove living room. Who do I go to to have the house assessed for planning ventilation? What are the safety concerns of not having a vent in the stove room? There is a carbon monoxide alarm on the ceiling in that room. I realise now the work done was not correct and would like to know if passive demand control vents would solve these problems but also if these cause heat loss then thanks

listermint

Bandygirl wrote: »

That’s my concern and issue lads thanks. The rooms have no ventilation other than the trickle vents in two rooms and us opening the windows daily . The airtightness was done to windows by the plasterers and there is no air source or vent in the stove living room. Who do I go to to have the house assessed for planning ventilation? What are the safety concerns of not having a vent in the stove room? There is a carbon monoxide alarm on the ceiling in that room. I realise now the work done was not correct and would like to know if passive demand control vents would solve these problems but also if these cause heat loss then thanks

You need a vent in the stove room immediately. Any handyman can quote you on that. dont wait around on this. There have been familys killed in the last year from Monoxide poisoning.

Markcheese

Yup it doesn't have to anything too fancy.. A hole in the wall, with a vent cover...
Old House didn't really need vents because there was so much air blowing in, but if one is made airtight.. Where does the air for the fire to burn come from, or worse the extractor fans is on in the kitchen and bathroom, and starts sucking air down the chimney,