Can I use a standard/'heat only' boiler instead of a system boiler?

[CZFred]

I'm thinking the Worcester 27Ri Compact. I won't have a lot of space, so... ...anyone recommend this, or not? Either way, why in particular? Thanks again!!

 

[ShaunCorbs]

I'm thinking the Worcester 27Ri Compact. I won't have a lot of space, so... ...anyone recommend this, or not? Either way, why in particular? Thanks again!!

What are your rad heating load ? And good boiler

 

[CZFred]

I'll need to get back to you on that. But there are 12 rads, and will be 14 or 15 once the loft conversion is added. This'll be split into 3 heating zones. One per floor.