Heat Pump with Radiators

clueless2014

Hi All

I'm new to this but am hoping to start building soon and this seems like a great place to get advice. At the minute we are looking at heating systems. Due to new regualtions we can't have oil heating in the house so we are looking at air to water heat pumps. We are not keen on UFH as its so expensive so we're looking into using radiators. We've been told it has to be special aluminion radiators but we have no more info. We're also hoping to put in a solid fuel stove with a back boiler that will also heat the radiators. We'll have to put in a buffer tank if we're running both off the radiators. Has anyone any experience of this? We'd like to hear from people who have this before going with it.

freddyuk

You need underfloor. If you are building the house then underfloor is easy to do and cheap as it is 90% plastic pipe! Have you actually priced it up?
You will be insulating and sealing to a high degree so go with the best heating solution for ASHP.
If you mean it's expensive to run then that is only because it is installed in a draughty and badly insulated house.

kieranhr

Low temperature aluminium radiators are more efficient than normal radiators, but they won't achieve the same efficiency as underfloor heating.
If you definitely want radiators, you're better off with a timber pellet boiler than air-to-water.

froshtyv

clueless2014 wrote: »

Hi All

I'm new to this but am hoping to start building soon and this seems like a great place to get advice. At the minute we are looking at heating systems. Due to new regualtions we can't have oil heating in the house so we are looking at air to water heat pumps. We are not keen on UFH as its so expensive so we're looking into using radiators. We've been told it has to be special aluminion radiators but we have no more info. We're also hoping to put in a solid fuel stove with a back boiler that will also heat the radiators. We'll have to put in a buffer tank if we're running both off the radiators. Has anyone any experience of this? We'd like to hear from people who have this before going with it.

Have you talked to a plumber on how your going to combine solid fuel and an air-to-water heat pump?

How are you going to do your DHW?

The DHW cylinder would have to be designed for a heat pump.

scudo2

clueless2014 wrote: »

Hi All

I'm new to this but am hoping to start building soon and this seems like a great place to get advice. At the minute we are looking at heating systems. Due to new regualtions we can't have oil heating in the house so we are looking at air to water heat pumps. We are not keen on UFH as its so expensive so we're looking into using radiators. We've been told it has to be special aluminion radiators but we have no more info. We're also hoping to put in a solid fuel stove with a back boiler that will also heat the radiators. We'll have to put in a buffer tank if we're running both off the radiators. Has anyone any experience of this? We'd like to hear from people who have this before going with it.

Sorry I'm a bit late on spoting this guys as I'm mainly on P&H forum.
Why can't clueless/OP have an oil boiler ?
Thanks
Scudo
P&H + oil ser. eng.

froshtyv

scudo2 wrote: »

Sorry I'm a bit late on spoting this guys as I'm mainly on P&H forum.
Why can't clueless/OP have an oil boiler ?
Thanks
Scudo
P&H + oil ser. eng.

You wont pass the EPC and CPC in the BER with the 2011 building regs using an oil boiler.

kieranhr

froshtyv wrote: »

You wont pass the EPC and CPC in the BER with the 2011 building regs using an oil boiler.

Not so much that you won't reach those EPC and CPC targets, but you'll certainly be struggling to get there. You'll need to compensate with Heat Recovery Ventilation, plus solar to meet minimum renewable energy requirements, maybe more. And at the end of it all, you'll still be spending twice as much on fuel as an equivalent timber pellet or Air-to-Water solution. Rising to three times as much in ten years time.

froshtyv

kieranhr wrote: »

Not so much that you won't reach those EPC and CPC targets, but you'll certainly be struggling to get there. You'll need to compensate with Heat Recovery Ventilation, plus solar to meet minimum renewable energy requirements, maybe more. And at the end of it all, you'll still be spending twice as much on fuel as an equivalent timber pellet or Air-to-Water solution. Rising to three times as much in ten years time.

Spot on.

scudo2

Thanks guys for replys.





ps. I hate when OP milk you for info and don't say thanks.
my pet hate on P&H
Cheers
M

galwaytt

kieranhr wrote: »

Not so much that you won't reach those EPC and CPC targets, but you'll certainly be struggling to get there. You'll need to compensate with Heat Recovery Ventilation, plus solar to meet minimum renewable energy requirements, maybe more. And at the end of it all, you'll still be spending twice as much on fuel as an equivalent timber pellet or Air-to-Water solution. Rising to three times as much in ten years time.

You've just demonstrated that oil is still possible, you just have to plan it. And chances are you'd be using MHRV anyway.

And wood pellet and air to water capital and instalation costs will be higher than oil as well - not to mention servicing. In a well built house running costs will still be reasonable.

It's simply too simplistic to say you can't have oil.

kieranhr

galwaytt wrote: »

It's simply too simplistic to say you can't have oil.

My point exactly.