Unsure whether to install Atag or Vaillant

[batman1]

Hi Guys, first post here, looking for advice as to which boiler to go for.

I have been recommended either the ATAG i40S or the vaillant 637 boiler. The installer is a recognised fitter for ATAG and highly recommends them as he said that the boiler is very well made and has a 10 year warranty with a lifetime warranty on the heat exchanger.

Does anybody have experience in fitting the Atag's and how good is their after sales service? Are they good reliable boilers? The reviews on trust pilot are excellent.

Cheers

 

[Harvest Fields]

Hi Guys, first post here, looking for advice as to which boiler to go for.

I have been recommended either the ATAG i40S or the vaillant 637 boiler. The installer is a recognised fitter for ATAG and highly recommends them as he said that the boiler is very well made and has a 10 year warranty with a lifetime warranty on the heat exchanger.

Does anybody have experience in fitting the Atag's and how good is their after sales service? Are they good reliable boilers? The reviews on trust pilot are excellent.

Cheers

They are ok. But I prefer Vaillant if I am honest.

 

[chris watkins]

Have they done a heatloss calculation of the property ? they are both one of the largest output boilers on the domestic market which will not perform well if oversized.

 

[Riley]

Was gonna say they’re huge. Ps I’d. Go for Atag

 

[ShaunCorbs]

im guessing more than one shower / bathroom

 

[chris watkins]

im guessing more than one shower / bathroom

637 = system boiler

 

[ShaunCorbs]

637 = system boiler

yea so 300l unvented coil around 20kw makes the heating load around 15kw

depends on the use wouldnt be my recommendation

 

[chris watkins]

Come on Shaun we have had this one before - time the hot water so it heats the cylinder before the heating comes on = smaller cheaper to buy & run boiler.

 

[ShaunCorbs]

Come on Shaun we have had this one before - time the hot water so it heats the cylinder before the heating comes on = smaller cheaper to buy & run boiler.

exactly stagger the times

but there are and better efficiency when only the heating is on

only time i would do a set up like that is when they require hot water all the time eg care small home / respite

 

[Jerry]

If they have the same warranty, go for the cheaper one.

Unless it's Ferroli. Don't do Ferroli