Gas Boiler Recommendations?

dlockers said:
Thanks, I've started a return on nest. Where did you get your control from? Was there any additional bits needed?
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Vaillant sensoCOMFORT VRC720 Wired Multi-Zone Room Thermostat - Mr Central Heating

Find out more about the Vaillant sensoCOMFORT VRC720 Wired Multi-Zone Room Thermostat at Mr Central Heating
www.mrcentralheating.co.uk www.mrcentralheating.co.uk

That's wired version, I got wireless one as we are going to have lots of work to do on our house so not sure where final place for it will be. If you want to use their app you will need to get the gateway, we both work from home so no need.

All I needed was a short cable to connect two wires from wireless receiver to boiler ebus terminal.

If going wired you will need more length, not sure if it comes in the package.
 
oggiet said:

Vaillant sensoCOMFORT VRC720 Wired Multi-Zone Room Thermostat - Mr Central Heating

Find out more about the Vaillant sensoCOMFORT VRC720 Wired Multi-Zone Room Thermostat at Mr Central Heating
www.mrcentralheating.co.uk www.mrcentralheating.co.uk

That's wired version, I got wireless one as we are going to have lots of work to do on our house so not sure where final place for it will be. If you want to use their app you will need to get the gateway, we both work from home so no need.

All I needed was a short cable to connect two wires from wireless receiver to boiler ebus terminal.

If going wired you will need more length, not sure if it comes in the package.
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Thanks - going to order this one I think. I have Wickes tradepro:

Vaillant 0010036820 VRC720F SensoCOMFORT Thermostat | Wickes.co.uk

Vaillant 0010036820 VRC720F SensoCOMFORT Thermostat
www.wickes.co.uk www.wickes.co.uk

Edit: I have suspicion that'll just be the thermostat itself and not the wiring centre. The same model number links to other websites with a picture of all the bits though, so chancing it.
 
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Need a new gas boiler pretty quick, our 15 year old glowworm combi storage 100l sprung a leak all over the electric internals. Would like to get another storage combi, so don't have to put in a cylinder next to it.

I am thinking

Vaillant ecoTEC plus Combination Store
or
Viessmann Vitodens 222-F

or perhaps a non-storage option if it can handle our usage

Worcester Bosch Greenstar

anyone have one or looked at these?

Installer: I have my trusted plumber, but the manufacturer websites all seem to recommend others. Not many covering these brands, they seem to specialise in one or two brands only.
 
It doesn't really matter, modern boilers are a much of a muchness as presumably it is a combi which you are sizing for hot water demand.

If you are going to do anything, install the weather compensation controls where it will automatically vary the flow temperature and modulate its output down based on the outside temperature. It makes large real world efficiency gains once configured for your property, otherwise you'll not get close to the number on the outside of the box, particularly on a huge combi. If you use dumb on off controls, don't expect much in the way of efficiency improvements over what you already have.
 
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f666 said:
Need a new gas boiler pretty quick, our 15 year old glowworm combi storage 100l sprung a leak all over the electric internals. Would like to get another storage combi, so don't have to put in a cylinder next to it.

I am thinking

Vaillant ecoTEC plus Combination Store
or
Viessmann Vitodens 222-F

or perhaps a non-storage option if it can handle our usage

Worcester Bosch Greenstar

anyone have one or looked at these?

Installer: I have my trusted plumber, but the manufacturer websites all seem to recommend others. Not many covering these brands, they seem to specialise in one or two brands only.
Click to expand...
What's to specialise in when it comes to fitting one. Repairing maybe bit not installing.
 
thanks, maybe we should consider a heat pump compatible cylinder option also. could reuse the cylinder in the future perhaps
 
Very bad experience with a Vaillant Ecotec but they went through a bad patch 8-12 years ago. Nevertheless the engineers round here like Baxi so that is what I will be looking at when I have had enough of my Vaillant.
 
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spile said:
Very bad experience with a Vaillant Ecotec but they went through a bad patch 8-12 years ago. Nevertheless the engineers round here like Baxi so that is what I will be looking at when I have had enough of my Vaillant.
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They like Baxi because they're cheap and/or they're specifically trained on Baxi.
 
Stu999 said:
They like Baxi because they're cheap and/or they're specifically trained on Baxi.
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Or…
It’s based on their experience with other manufacturers
They are reliable
Good quality parts parts that are not extortionally priced

Complexity doesn’t necessarily mean better as I found to my cost.
 
Hi all
We’ve decided we need a new boiler, we have a Vaillant ecotec plus 837, it’s over 15 years old and started to do odd things. Like lose pressure, gain pressure, a small drip that took out the hive receiver.

So we’re looking at getting a viessman 100w 35kw, will it be a straight swap?

A local guy is coming around to give us a quote, but I’ve also researched online, boxt, Iheat, boiler central, heatable etc.
Boiler central seems to be the best price, is there any downside to using these online companies?

Thanks
 
We are after a new Combi too, after some researching i think I’ve settled on the Viessmann Vitodens 100-W 35kw Combi. Seems like a good boiler and with 1:10 modulation.

I have hive thermostat and hive trvs on my rads and hive doesn’t seem to support opentherm.

Online I have seen fixed price installs of this boiler where they fit a Honeywell Home T6R-HW Wireless Smart Thermostat which is open therm compatible.

Can I use the T6R with the boiler and use the hive stuff for the rads? I like the per room control as don’t want certain rooms heated up when they are not in use.

I’ve looked at heat pumps but prices are £7000 for our house after the grant so a no go. Maybe next time around.

@Slam62 try Hug Boilers. They were the cheapest for me.
 
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Slam62 said:
Hi all
We’ve decided we need a new boiler, we have a Vaillant ecotec plus 837, it’s over 15 years old and started to do odd things. Like lose pressure, gain pressure, a small drip that took out the hive receiver.

So we’re looking at getting a viessman 100w 35kw, will it be a straight swap?

A local guy is coming around to give us a quote, but I’ve also researched online, boxt, Iheat, boiler central, heatable etc.
Boiler central seems to be the best price, is there any downside to using these online companies?

Thanks
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Can't explain the drip, but the rest of symptoms sounds like the expansion vessel has failed.
 
f666 said:
Need a new gas boiler pretty quick, our 15 year old glowworm combi storage 100l sprung a leak all over the electric internals. Would like to get another storage combi, so don't have to put in a cylinder next to it.

I am thinking

Vaillant ecoTEC plus Combination Store
or
Viessmann Vitodens 222-F

or perhaps a non-storage option if it can handle our usage

Worcester Bosch Greenstar

anyone have one or looked at these?

Installer: I have my trusted plumber, but the manufacturer websites all seem to recommend others. Not many covering these brands, they seem to specialise in one or two brands only.
Click to expand...

The gas boiler that that I replaced with a ASHP from Octopus was a Worcester Bosch Greenstar at that time when it was installed (new build house) it only had a 7 year warranty it lasted 10 years. The boiler was serviced and inspected as per the warranty requirements, my plumber was not surprised.

If you go ASHP you need a space for the water cylinder (size depends on number bathrooms and people in house), buffer tank, maybe some replacement radiators and other pipework and a location for the ASHP.

The cost to install was less than £1100 for my house after the government heat pump grant. I could only get a 7 year warranty on the ASHP I was hoping for more.

What does your trusted plumber suggest, I would look at gas boilers with the longest warranties.
 
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f666 said:
thanks, maybe we should consider a heat pump compatible cylinder option also. could reuse the cylinder in the future perhaps
Click to expand...

I would save the money and buy the cheapest that meets your needs, I had a heat pump compatible cylinder connected to my old gas boiler. Octopus decided not to use it and to install a new cylinder with ASHP
 
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lmfy2k said:
they are top of my list and most likely will use them.
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had a few quotes in, all washed away after someone local came and checked out my existing boiler and pipework. So our house has 15mm hot and cold water copper throughout, so this basically limits options. No point in going system boiler and cylinder, the pipework is going to constrain the system. We are not going to rip out already renovated bathrooms.

none of the remote quoting operations or even other plumbers would or have picked this up to date since we have been here (15 years!)

so this prob simplifies things, and a modern combi, looks like only realistic option... it will be cheaper at least. some of the quotes for a new system boiler and gledhill 250l cylinder were 7k plus...

check your pipework first!
 
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f666 said:
had a few quotes in, all washed away after someone local came and checked out my existing boiler and pipework. So our house has 15mm hot and cold water copper throughout, so this basically limits options. No point in going system boiler and cylinder, the pipework is going to constrain the system. We are not going to rip out already renovated bathrooms.

none of the remote quoting operations or even other plumbers would or have picked this up to date since we have been here (15 years!)

so this prob simplifies things, and a modern combi, looks like only realistic option... it will be cheaper at least. some of the quotes for a new system boiler and gledhill 250l cylinder were 7k plus...

check your pipework first!
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There's 2 ways to get round the pipework:


1. If you went for unvented cylinder the pipework size is fine, as the water tank will be same pressure as mains pressure and will be same as combi except other people can have a poo and flush the loo while your having a shower.

Cost wise it's similar to a system boiler, but the installer needs a G3 qualification.

2. Install a pump on hot and cold pipes (they do dual pumps) to pressurise the water to the same as incoming mains.

Either option negates the pipes being only 15mm.

The boiler expert that came round should have given you these options aswell so I'd be questioning his expertise.

Edit: p.s only the bath typically has 22mm pipes on a vented tank system boiler
 
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sx_turbo said:
There's 2 ways to get round the pipework:


1. If you went for unvented cylinder the pipework size is fine, as the water tank will be same pressure as mains pressure and will be same as combi except other people can have a poo and flush the loo while your having a shower.

Cost wise it's similar to a system boiler, but the installer needs a G3 qualification.

2. Install a pump on hot and cold pipes (they do dual pumps) to pressurise the water to the same as incoming mains.

Either option negates the pipes being only 15mm.

The boiler expert that came round should have given you these options aswell so I'd be questioning his expertise.

Edit: p.s only the bath typically has 22mm pipes on a vented tank system boiler
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Thank you, very useful. I must say the range of advice and options has varied massively.
 
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