Mitsubishi ecodan Heatpump Boiler

[Kesh-NI]

Hello al, a fellow Irishman

Cheers for the link to that thread.

Frank, you seem to be THE man to ask, so if you're still viewing this forum can you tell us how your mate's electricity bill went over the last 6 months, and how well the sytem operated during the winter months? Have you had any grief down the boozer?

It was great to hear that between June and Sept 2008, you measured the cost at £20 extra to run the ASHP, with the solar input. But realistically, the real test would have been October to now, when the solar's input would have been at its lowest. Is it possible to post an update? Was there a massive hike in his lekky bill? Is he still talking to you?

As I posted yesterday, my concerns are 2-fold.
1. Capital cost of solar + (most probably) Altherma -v- simple replacement of an old oil boiler
2. Running costs... I don't just want to replace an oil boiler costing me a fortune (£1500-£1600 typically - ouch!) with an electricity bill going through the roof.

Hey, I'm not really being a doom-monger nor do I want to come over as unduely sceptical... actually, I just don't know enough about all this... I so want to believe it'd be worth it.

If I just swapped out for a new boiler now (recently estimated at £1000 supplied and installed) I reckon my oil bill would be down to £800-£900. Maximum year 1 cost about £2k and no grant towards this.

What's the outlay for a typical solar + ASHP system, and year 1 running cost? It may all come down to simple economics. Essentially, the difference in capital outlay has to have a payback, and the sooner the better.

Would I be much or indeed any better off with solar + ASHP, even after 5 years? And then there seem to be all those caveats about how energy efficient / leaky the house has to be for optimal conditions for the all important COP figures to stack up...........

Kesh

[frank]

Hello al, a fellow Irishman

Cheers for the link to that thread.

Frank, you seem to be THE man to ask, so if you're still viewing this forum can you tell us how your mate's electricity bill went over the last 6 months, and how well the sytem operated during the winter months? Have you had any grief down the boozer?

It was great to hear that between June and Sept 2008, you measured the cost at £20 extra to run the ASHP, with the solar input. But realistically, the real test would have been October to now, when the solar's input would have been at its lowest. Is it possible to post an update? Was there a massive hike in his lekky bill? Is he still talking to you?

As I posted yesterday, my concerns are 2-fold.
1. Capital cost of solar + (most probably) Altherma -v- simple replacement of an old oil boiler
2. Running costs... I don't just want to replace an oil boiler costing me a fortune (£1500-£1600 typically - ouch!) with an electricity bill going through the roof.

Hey, I'm not really being a doom-monger nor do I want to come over as unduely sceptical... actually, I just don't know enough about all this... I so want to believe it'd be worth it.

If I just swapped out for a new boiler now (recently estimated at £1000 supplied and installed) I reckon my oil bill would be down to £800-£900. Maximum year 1 cost about £2k and no grant towards this.

What's the outlay for a typical solar + ASHP system, and year 1 running cost? It may all come down to simple economics. Essentially, the difference in capital outlay has to have a payback, and the sooner the better.

Would I be much or indeed any better off with solar + ASHP, even after 5 years? And then there seem to be all those caveats about how energy efficient / leaky the house has to be for optimal conditions for the all important COP figures to stack up...........

Kesh

Since the install was carried out, I'm not getting any grief down the pub - now I get the odd pint for free

Spoke to the man today actually on the phone - he was asking how the install for the nice people he invited around to view his system was going. I said that it was finished on Friday and that, looking at the nice weather we had on Sunday, I could imagine very big grins on their faces just watching the hot water cylinder heat up for free!!

The original system that was mentioned at the start of this thread has now been operating for 11 months. The total electricity cost, including some Economy 7 is £230. The total cost for this month (March) is just over £10. It looks like the first years energy cost will be less than £250. Not bad when you consider that the oil spend was in the region of £1900/year.

I'll see if I can get a copy of the speadsheet he's been keeping.