We're looking into replacing our boiler. The current one is tankless and only provides hot water for heating on a closed loop. There is an entirely separate electric HW tank & plumbing for 'domestic' hot water (showers etc.)

We don't necessarily want to alter the DHW system at the moment, it works fine, and leaving it alone would be cheaper / simpler. But it might be nice to have the option of switching it to the boiler in the future.

Would it be possible to install a tankless combi boiler but leave the DHW side of it disconnected (capped off) and use it just for heating duty? I don't know if having "dry pipes" on that side might cause some problem? Or some other concern.

If there are specific types of boilers that would / would not allow this, that would be very useful information as well.

I can see that often a boiler will have a two variants of the same model - one with DHW and one without. That makes me think this is likely to be possible. But I have looked in a few manuals of boilers but not seen this addressed. Web searches haven't turned up anything either. Of course I may simply not have seen this information, but thought it was worth asking for advice here.

Thanks!

We're looking into replacing our boiler. The current one is tankless and only provides hot water for heating on a closed loop. There is an entirely separate electric HW tank & plumbing for 'domestic' hot water (showers etc.)

We don't necessarily want to alter the DHW system at the moment, it works fine, and leaving it alone would be cheaper / simpler. But it might be nice to have the option of switching it to the boiler in the future.

Would it be possible to install a tankless combi boiler but leave the DHW side of it disconnected (capped off) and use it just for heating duty? I don't know if having "dry pipes" on that side might cause some problem? Or some other concern.

If there are specific types of boilers that would / would not allow this, that would be very useful information as well.

I can see that often a boiler will have two variants of the same model - one with DHW and one without. That makes me think this is likely to be possible. But I have looked in a few manuals of boilers but have not seen this addressed. Web searches haven't turned up anything either. Of course I may simply not have seen this information, but thought it was worth asking for advice here.

We're looking into replacing our boiler. The current one is tankless and only provides hot water for heating. There is an entirely separate electric HW tank for 'domestic' hot water (showers etc.)

We don't necessarily want to alter the DHW system at the moment, it works fine, and leaving it alone would be cheaper / simpler. But it might be nice to have the option of switching it to the boiler in the future.

Would it be possible to install a tankless combi boiler but leave the DHW side of it disconnected (capped off) and use it just for heating duty? I don't know if having "dry pipes" on that side might cause some problem? Or some other concern.

If there are specific types of boilers that would / would not allow this, that would be very useful information as well.

I can see that often a boiler will have a two variants of the same model - one with DHW and one without. That makes me think this is likely to be possible. But I have looked in a few manuals of boilers but not seen this addressed. Web searches haven't turned up anything either. Of course I may simply not have seen this information, but thought it was worth asking for advice here.

Thanks!

We're looking into replacing our boiler. The current one is tankless and only provides hot water for heating on a closed loop. There is an entirely separate electric HW tank & plumbing for 'domestic' hot water (showers etc.)

We don't necessarily want to alter the DHW system at the moment, it works fine, and leaving it alone would be cheaper / simpler. But it might be nice to have the option of switching it to the boiler in the future.

Would it be possible to install a tankless combi boiler but leave the DHW side of it disconnected (capped off) and use it just for heating duty? I don't know if having "dry pipes" on that side might cause some problem? Or some other concern.

If there are specific types of boilers that would / would not allow this, that would be very useful information as well.

I can see that often a boiler will have a two variants of the same model - one with DHW and one without. That makes me think this is likely to be possible. But I have looked in a few manuals of boilers but not seen this addressed. Web searches haven't turned up anything either. Of course I may simply not have seen this information, but thought it was worth asking for advice here.

Thanks!