Bloody tired of being confused. What heating system to fit ?

[JohnMo]

13 minutes ago, Roger440 said:

By smaller cylinder, you mean a smaller UVC than you might otherwise install?

 

Heat pump cylinders are generally big because they store water at 45 to 50. A typical direct cylinder could just as easily be at 70 degs, so effectively a much smaller cylinder holds just as much energy.

[Adrian Walker]

2 hours ago, Big Jimbo said:

@Adrian Walker Also, i believe that at below 3 i would be required to fit MVHR. It is a shame but just really not got the space. I will have to have have 6 extractors for all the wet areas. I will have to have a look and consider what my options are on that front.

If you want a healthy & happy home you should have MVHR. It doesn’t take a lot of room, you can self install and will save on your heating bills. 

[Mike]

3 hours ago, Big Jimbo said:

i believe that at below 3 i would be required to fit MVHR. It is a shame but just really not got the space.

No space in a 1,750 square foot house? I'm not the only one that's fitted one in an apartment a fraction of that size; they really aren't that big. Could go on the wall or ceiling of the laundry room, or study next the hot water tank, or the kitchen, or the largish entrance hall, or the WC...

[torre]

At what stage are you planning to market the build? I'm wondering if there's any scenario where you might sell off plan and let the buyer choose the heating and internals? You'd also get some validation of the likely sale value. Or any other scenario that would let you build both side by side as there must be economies to be made. 

Ideally you'd keep both builds as similar as possible but only your own will qualify for a grant which does complicate things. What do estate agents say about ashp versus gas boiler? 

[SimonD]

59 minutes ago, Roger440 said:

 its more likely, than not, you will get a "not good" job. Which is what seems to be happening in the real world.

 

No, this is a scewed perspective based upon microcosms that highlight poor installations. Last year there were probably around 60,000 heat pumps installed, for arguments sake. Do you have statistics that show that the majority of these installations were not good jobs? That you're more likely than not to get a bad job?

 

1 hour ago, Roger440 said:

For mine doing a "johnmo" as it were and as suggested on this thread, you have a ASHP, a UVC, some sort of wiring/control center, some UFH pipe and some rads. I couldnt get that close to £11k in materials even if i tried.

 

Have you run your own figures?

 

Lets take a pretty run of the mill materials list for a retrofit using some publicly available prices at Midsummer Wholesale for the heat pump and other online suppliers for other stuff:

 

Vaillant Aerotherm + 7kW - £4724.24

Vaillant controls - VR70, SensoComfort plus internet gateway - £633.41

Telford UCV 250l- £1225.70

50 liter volumiser - est. £350 (not Misummer who want £455 for a 25l volumiser)

Installation kit - anti vibration feet, insulated flexi pipes, isolation valves, mag filter/strainer - £270

External pipe trunking (lets say 5m length) with bends and connectors etc. - £250

External Pipe insulation - £14/m x 10 external + sealant/glue & tape - £190

Internal pipe insulation for uvc and heating primaries etc.  - £65

Anti-freeze valves - £200

Type b rcd - £180

Other electrical - cable (power and control), mcb, small enclosures, junction boxes, 2 x kwh meters,32A 4-pole isolator, trunking - £360

3 bog standard radiators - £300

2 nice column radiators for the living room and kitchen - £700

5 x good quality radiator valves - £150

Copper pipe mix of 28/22/15mm - £250

Press fit pipe fittings - £ 250

Pipe clips - £50

3-port diverter valve - £110

Expansion vessel kits x 2 heating and potable - £150

 

This comes to a grand total of £10408.35 and there are other bits and bobs I can't be bothered to list - like system cleaner/biocide/inhibitor and all those sorts of consumables. No UFH pipe or manifolds here either. No long primaries to house or through it. And this doesn't include materials for constructing a base.

 

This represents a fairly small job for a reasonably efficient heating system. Yes, I can probably get some discount on the uvc and heat pump, but I'm sure this gives you a good illustration of what it actually costs to buy materials for an installation.

[Iceverge]

36 minutes ago, SimonD said:

 

No, this is a scewed perspective based upon microcosms that highlight poor installations. Last year there were probably around 60,000 heat pumps installed, for arguments sake. Do you have statistics that show that the majority of these installations were not good jobs? That you're more likely than not to get a bad job?

 

 

Have you run your own figures?

 

Lets take a pretty run of the mill materials list for a retrofit using some publicly available prices at Midsummer Wholesale for the heat pump and other online suppliers for other stuff:

 

Vaillant Aerotherm + 7kW - £4724.24

Vaillant controls - VR70, SensoComfort plus internet gateway - £633.41

Telford UCV 250l- £1225.70

50 liter volumiser - est. £350 (not Misummer who want £455 for a 25l volumiser)

Installation kit - anti vibration feet, insulated flexi pipes, isolation valves, mag filter/strainer - £270

External pipe trunking (lets say 5m length) with bends and connectors etc. - £250

External Pipe insulation - £14/m x 10 external + sealant/glue & tape - £190

Internal pipe insulation for uvc and heating primaries etc.  - £65

Anti-freeze valves - £200

Type b rcd - £180

Other electrical - cable (power and control), mcb, small enclosures, junction boxes, 2 x kwh meters,32A 4-pole isolator, trunking - £360

3 bog standard radiators - £300

2 nice column radiators for the living room and kitchen - £700

5 x good quality radiator valves - £150

Copper pipe mix of 28/22/15mm - £250

Press fit pipe fittings - £ 250

Pipe clips - £50

3-port diverter valve - £110

Expansion vessel kits x 2 heating and potable - £150

 

This comes to a grand total of £10408.35 and there are other bits and bobs I can't be bothered to list - like system cleaner/biocide/inhibitor and all those sorts of consumables. No UFH pipe or manifolds here either. No long primaries to house or through it. And this doesn't include materials for constructing a base.

 

This represents a fairly small job for a reasonably efficient heating system. Yes, I can probably get some discount on the uvc and heat pump, but I'm sure this gives you a good illustration of what it actually costs to buy materials for an installation.

 

I'm feeling some what validated in my choice to avoid central heating entirely.