Heat Pumps - post here.

Good to know about double glazing. To upgrade now to tripple would be a huge upgrade cost. I heard that regular double glazed windows can be upgraded to E profile glass. Meant to work almost as good as tripple glazing in regards to heat losses.

Forgot to mention my house is BER rated B2, not perfect for HP but still.

I also do have a PV array 4.6 Kw, so during brighter days I should be covered by my own generated electricity.

4000KWh for HP alone? And what would be average daily consumption then? If we do a rough estimate 4000* 0.50 (day rate say) = 2000 e in heating costs per year...my oil consumption would be roughly 1000 euro/Annualy

If your house in air tight enough for a heat pump it should also keep in the heat from the oil very efficiently.I would not change an oil burner if I was only using 1000l a year unless the boiler is ancient and I had a heat loss survey done by an independent engineer, there some out there installing HP in unsuitable houses and trying to make a quick sale.

Also be aware of the financial implications, 1000l oil will cost 1150E(could go up or down) and electricity costs(could go up or down) for heat pump could be 6-700E per year on a Correctly installed HP.If you are paying in the region of 12k+ for HP be aware of pay back time if that is a concern of yours.

BTW,how old is your oil burner, also what type of insulation do you have?

Also look here https://www.boards.ie/discussion/2058278528/boiler-to-heat-pump-switchers-are-you-still-happy#latest

Thanks for the follow up. I am going to hold off looking to upgrade my system. Suppliers and supply chain seem to be blocked so I am going to wait until things settle down

All very valid points! Thnaks for all suggestions.

Boiler has actually been just replaced 2 years ago. But Im willing to sacrifice that to get peace of mind of not having to chase for cheapest oil quotes online. On top of oil I supplement house heating with stove with a back boiler. So thats another cost on coal and firewood. I had heat loss survey done last year and my house been deemed good enough for HP install even with double glazing. All walls pumped and attic packed. Was thinking maybe spray foaming attic to create even better insulation. Has anybody done that, any comments, guys?

What you are saying average HP unit might cost only 12k? Surely thats an outtdated info? And what route should I go, take a grant or do cash deal and possible save some?

What about lifespan and maintenance costs on HP. What would be average lifespan of HP and does its efficiency deteriorate from year to year, e.g. would you see energy consumption increase or heat output decrease? Does HP have to be serviced annually what does the service entail and average cost of it?

What price are they quoting for HP plus insatallation?A grant job will cost more as the installer usually takes the grant for themselves but he will have to do it correctly to satisfy SEAI regs.

TBH I would not be ripping out a 2 yr old boiler to put in a HP, and I think you will also find that if the HP does not live up to your expectations you will still need solid fuel back up.I would keep oil for another 3 years, see how prices fare out and what new technologies emerge(supposed to be a cheaper HP on the horizon that could be used with existing plumbing)

Spray foam is not usually recommended, do a search here for info.

Oil prices daily for homeowners here https://www.cheapestoil.ie/

Absolutely. Our HP was put in as part of a full refurb, rewiring, replumbing, everything.

If you've a relatively new boiler or other heat source the payback would be too long. Our boiler was well past it's best days before we started the work so it made sense to go HP instead of new boiler and hot tank.

If your boiler breaks or is on the way out and your house is suitable then you've a decision to make on HP.

I have a joule/Samsung HP system, UFH and rads upstairs...we have 2 zones downstairs and upstairs (controlled by touchscreen panels on the wall)...

Have the temp set to 20°c...HP is still using a good amount of power ...367kWh so far in January...

Anyone have any suggestions for getting this under control

Here is my HP energy consumption profile for the year. This is a moving 7 day average to smooth out the ups and downs.

That big peak was the really cold snap in December, we had another cold snap last week that bumped it up a bit. But during the winter months Im doing 20-25kWh/day and during the non heating months 2.5- 7.5 kWh a day.

200m2 A1 Rated house with 4 adults and lots of showers.

Hi folks,

About to break ground on a 2000 SQFT Bungalow. House is designed to be A2, new block built, with 200mm pumped bead in the walls and all the insulation elsewhere to bring it to a2. UFH.

Looking for recommendations for

• A2W unit, ideally with reverse cycle function. We don't have money to burn, so I am after value for money balanced with performance. This is an area I will be happy to spend for quality.
• Any reputable companies operating in the west of the country

You probably just need to reset your thinking. I panicked about electricity usage until I realised I don't have the gas bill for heating to go with it anymore. Overall despite the increased energy prices I'm still saving Vs pre refurb days.

I have a house just over 200sqm so not too far off the size you're building.

Fitted with a NIBE 8kW A2W unit which I use for DHW, heating and cooling. I assume the reverse cycle you mean is cooling also.

How are you guys working out what energy the heat pump is using? I can see what output I'm getting from it for heating and hot water but I don't see an input kWh that it's using. It's a Nibe VVM S320 connected to an Air Source Nibe F2040-12.

The MyUplink App is fine but pretty basic, there is a Pro subscription but it looks like it's only for historical data.

Any help would be appreciated.

Not sure about heat up quicker but it should be able to maintain lower flow temps because of the increased surface area with underfloor.