E1 to ??? by replacing a gas boiler with a heatpump ?

Why ?

Because I have saved a fortune this winter on heating costs - that's why !!!

A heatpump is just another heat source. It can still work very well in a leaky house, once it's designed correctly, and installed with the correct settings.

It's down to the COP. If you can run with a COP better than about 2.0, you should be pretty close to being quids in.

In my case, I had a non-condensing non-modulating combi boiler. It had a COP of 0.65 at best.

At present, I have a SCOP of 3.98, and in February the heatpump used 340kWh

If that wasn't enough, the majority of this power was on night rate into batteries, @ 5c/kWh 😃

So do more research, rather than just making unfounded statements

Zero spent on upgrades. Heatpump was a self install, imported from the UK (Vaillant AroTherm 5kW). Tops €5k

If anyone is paying electricity 7 times more expensive than gas, they need their heads tested. I think 1/3 would be around right for most

Thankfully my electricity is under 1/2 what I was paying for gas. And I've no gas standing charge now either

Correct

I was interested in knowing the approximate change up - purely for curiosity. I got my answer already from someone else by PM.

I have no interest in ever moving, so I have zero reason to ever (or at least currently) need a BER.

The fabric of the house is still the same.

Adding a battery has zero effect on BER.

So a BER change and question was purely based on the removal of a gas boiler and replacing it with a heatpump - which in my opinion is a very plain and simple question.

And in fact, as I understand it, BER will only reference those very facts. It will have nothing to do with whether it is being run at 55deg like a gas boiler, or have a crazy weather curve setting.

The BER appears to be an assumption that it's far cheaper to run, which in fact, for some, couldn't be further from the truth sadly.

And let me enlighten you with numbers

I used an average of 15kWh of electricity during February. That generated an average of 50kWh of HEAT per day.

To generate 50kWh of heat from my Combi would have needed at least 77kWh of gas.

Suppose electricity was 37c / kWh (my Pinergy Day rate) and gas was 10c / kWh

37c x 15 = €5.55

8c x 77 = €6.16

So the heatpump wins hands down, as this is possibly the max electricity rate and the absolute lowest gas rate

I have my system on heatpumpmonitor.org

See my last post, where I have shown it's still cheaper, despite having all electricity on the most expensive rate on the market vs lower than the lowest gas rate.

And it can only get better.

And I have a house waaayyyy more comfortable than ever before

Although the BER should have improved with no Gas meter I assume ???

And I thought BER was about physical device evidence, and not how it runs ??? In other words, providing the manufacturers spec sheet / documentation

As an aside, my COP today is 4.79 (being mild) and my SCOP is 4.00 on the button

This sounds like it falls into the common narrative of "heat pumps don't work in poorly insulated homes".

I also only run 14 hrs per day, rather than 24 hrs.

I've no plans to ever move, so I've zero requirement for a BER. But it's all good to know info.

Question though - can bills for electricity and gas be used as "evidence" ?