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Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 8:02 pm
by jimbo
We are expecting our first child and just wondering about heating costs/efficiency.

The wood heater is at one end of the house and our bedroom where the baby will be sleeping is at the other. Right now its 24 in the living room and 18 in the bedroom but over night when we choke the heater down it will drop a few degrees. We would like to maintain a room temp of around 18-19 degrees.

The house also has zoned (each bedroom) in slab electric heating that operates off peak at around 14c/kwh.

Do we just turn the slab heating on in the bedroom and set it at 18-19 degrees or just use a simple oil heater when needed? Obviously the slab heating will be charged at 50% of the oil heater but how efficient is the slab heating? How much energy is lost to the ground?

Thanks


Also we cannot duct air from the living room as it is a rental and has cathedral ceilings with no roof cavity.

Re: Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 9:08 pm
by davidg
jimbo wrote:The wood heater is at one end of the house and our bedroom where the baby will be sleeping is at the other. Right now its 24 in the living room and 18 in the bedroom but over night when we choke the heater down it will drop a few degrees. We would like to maintain a room temp of around 18-19 degrees.

Too warm, believe it or not general temp for night sleeping is far better at 13-15 max people including babies get better sleep.
jimbo wrote:The house also has zoned (each bedroom) in slab electric heating that operates off peak at around 14c/kwh.

eek! :shock: that will likely turn out to be a scary cost I suspect.

jimbo wrote:How much energy is lost to the ground?

Lots if the slab is not sitting on insulation of some sort, but if the edge of the slab and ground is correctly thermally broken there is a point where it would stabilise, but that would take time and energy.


Window Heat pump (Reverse cycle A/C) mounted in the window, portable split system or similar device.

Re: Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 9:44 pm
by jimbo
Too warm, believe it or not general temp for night sleeping is far better at 13-15 max people including babies get better sleep.

We are only going by what the midwifes have told us. They don't seem to cover babies in blankets anymore, just a sleeping bag. I won't argue with anyone as it's my first but everything my mu has told me to do we have been told not to do hahaha.

Slab heating has individual breakers and temp control for each room so the plan was to just use the one bedroom.

My girlfriend can never sleep with any sort of fan on (even in summer) so no heat pump.

Re: Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 10:15 pm
by davidg
jimbo wrote:
Too warm, believe it or not general temp for night sleeping is far better at 13-15 max people including babies get better sleep.

We are only going by what the midwifes have told us. They don't seem to cover babies in blankets anymore, just a sleeping bag.

When my son was born it was late spring so not too much required, but as the following winter came on, our nanny, with 30+ years of experience and having looked after I really don't know how many babies, as well as being a nurse and midwife, I must say he did sleep well only waking up for his feeds as one would expect. She's now a family friend and she still has more work looking after babies than she knows what to do with, my son is 16 now.

#just saying

Re: Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 10:19 pm
by jimbo
We know of people who have been told the room has to be at 21 degrees (no joke) so i'm happy with 18. It does usually get cool enough in our room that we need an electric blanket.

Re: Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 10:22 pm
by jimbo
So slab heating at 14c v oil heater at 27c

Re: Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 10:55 pm
by davidg
jimbo wrote:We know of people who have been told the room has to be at 21 degrees.

:o

Not directed at you at all, I'm just staggered at some of the advise provided to people often nowadays, I often where it comes from as it is not always practical to actually do.

Here's a link that may help. http://www.madeformums.com/baby/babys-r ... 35795.html

Re: Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 10:58 pm
by jimbo
From the link

"Anywhere between 16ºC and 20ºC is a good temperature for your baby, and around 18ºC (65ºF) is ideal,"
:mrgreen:

Re: Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 11:03 pm
by davidg
jimbo wrote:From the link

"Anywhere between 16ºC and 20ºC is a good temperature for your baby, and around 18ºC (65ºF) is ideal,"
:mrgreen:


Yes, but really I added it because there's more there about heating etc. BTW, congrats I believe should be said as well.

Re: Off peak slab heating v oil heater

PostPosted: Wed May 25, 2016 11:14 pm
by jimbo
Thanks.

We haven't spent a full winter here yet but already this month its been under 5 degrees 5 or 6 times at night. I can see this side of the house getting fairly cool.