Air Source Heat Pumps

matelodave

I've been ore than happy with mine. No dirty smelly oil tanks in the garden, no refilling, leaks or threat of theft. No need to get the boiler serviced.

It's clean, quiet and needs minimal servicing - in fact it doesn't really need any just to ensure that there's not leaves & stuff in the heat exchanger

I guess my hot water & heating costs around 3-4p kwh a price I'm more than happy to pay.

Oh! I nearly forgot, I get over £700 a year for seven years in RHI payments as well.

What's there to regret?

c13pep

The number of complaints on this forum alone all seem to have one thing in common ie. poor installation/setting up. It would seem that the manufacturers must bear the majority of the blame for allowing poorly qualified plumbers to do installations instead of properly regulated heating engineers. As with solar panels the cowboys will fall away eventually but it must be hoped that ASHPs do not lose credibility in the mean time. My own Ecodan system is still performing well in its fourth year and is well within my own research done before installation. Receiving about £900 per year from RHI is the added bonus. SET UP IS KEY as in most things but the installation engineers are crucial.

[Deleted User]

Silent_Dancer wrote: »

I wonder how many people who've bought heat pumps are now regretting it. Expensive electricity vs cheap oil, poor performance (house taking ages to warm up and promised efficiencies not materialising) and expensive mainteance.

And people who have paid silly money to burn kitty litter [biomass]; unreliably. Or even people on mains gas who have bought crap boilers. Or...

So oil has been cheap for 5 mins when heating systems have to last for a significant period of time...?

I've had both oil and LPG and would choose neither ever again. Price is not the only factor. I'd much rather not be at the mercy of niche suppliers of fuels, with an ugly tank that stinks and organising deliveries...

As for expensive maintenance that's Mains gas, LPG, Oil & Biomass, not ASHP/GSHP.

Ages to warm up!? With longer running time the house is always warm...

Solar PV/ASHP all the way for me This combo makes me a big profit unlike friends expensive to run kitty litter boilers which they plan on ripping out when the RHI runs out...

scheissefuergehirn

As a retired person, I am fairly happy with my ASAP which runs 24 hours a day. If I wasn't a home bird it wouldn't suit me very well. It takes a long time to heat the house from cold (much longer than the oil boiler did) and the controls are complicated. For someone who just wants their house warmed in the morning and then again when they come home from work an Air Sorce Heat Pump wouldn't be suitable. The pump is quite noisy and it struggles to keep the house warm when the really cold weather comes.

[Deleted User]

scheissefuergehirn wrote: »

As a retired person, I am fairly happy with my ASAP which runs 24 hours a day. If I wasn't a home bird it wouldn't suit me very well. It takes a long time to heat the house from cold (much longer than the oil boiler did) and the controls are complicated. For someone who just wants their house warmed in the morning and then again when they come home from work an Air Sorce Heat Pump wouldn't be suitable. The pump is quite noisy and it struggles to keep the house warm when the really cold weather comes.

Yes I too find they can get noisy in really cold weather. Longer running times are more of a design feature for max efficiency than a fault but I get your jist.

On the other hand, especially in an old house, keeping the fabric of the building warm makes a huge difference to comfort. When we had LPG with shorter running times outside walls would get very cold to the touch which in part caused mould in bathrooms etc. Which basically meant the building cooled down quicker so overall the ASHP is massively cheaper to run than LPG.

Though I should add that at the time of the ASHP install cavity wall insulation, ventilation was sorted.

Ours is set to maintain 21c when the house is occupied which it achieves not matter what is happening outside, rural scotland. I know it can easily go higher as last winter the ASHP wireless thermostat was doing weird things like not turning the heating on or off randomly and the temp guage would be approaching mid 20's.

Fault traced to one of the Wi-Fi access points to close to the boiler receiver in the loft ...

Cheers

beanyman1000

:hello:Has anyone experience of the IVT AirX heat pump, sold as Bosch compress 6000aw in Europe. As I have been looking into purchasing a pump, and all the test's, comparisons, and reviews say that it is the best at the moment., most efficient, etc. I had made up my mind to go for the Mitsubishi, but now not sure.

lovesgshp

Have a look at posts 1608/1610 and you may get an idea. The performance of the AirX is fairly close to a gshp, but you have to be aware that performance drops more as the temperature outside decreases, so operating costs may increase.

brianposter

Would someone be good enough to explain the workings of my newly installed Daikin heat pump.

I set all the thermostats so that no heating is required and then switch on the controller. The heat pump immediately starts up and presumably heats something - I guess the basic heating circuit.

My installer tells me that this is how it is supposed to work but this seems nonsense to me - to my mind if no heating is required the pump should remain in deep slumber.

matelodave

My Daikin only runs when the room stats call for heat. It also runs if the hot water needs heating

lovesgshp

I would think the same as Matelodave, as it could be heating the DHW.