Venturi v Thermostatic showers from a Combi boiler?

[blondebier]

Hi Guys,

We're in the process of choosing a new bathroom and need a new shower to go over a corner bath. We're also having a combi boiler fitted at the same time (Potterton Gold 24HE).

We want a really nice shower and wandered what the best route was?

My folks have the New Team Jetstream venturi running of a combi and it works great - but I read in their sales blurb that you should NOT use them with a combi system as they're designed for gravity fed systems...

This then lead me to thermostatic showers ... it's a mine field. So many to choose from.

Where do you start?

Any recommendations would be most appreciated.

Cheers,

Blondebier

 

[namsag]

First for all the extra it will cost go for the 28 boiler instead of 24 as you will get 25% more hot water. Newteam venturi are not designed for combi system and are now out of production i think, although there are some still floating about.

Most thermostatic showers are half decent and will range in price fro £100 to ££££ . All depends what style you want concealeed/exposed/chrome/gold/brass.. and if it can be fitted in your situation .. Most people will prob say Mira the best but Grohe/Aqualisa/ Trevi are all just as good... And the £100 ones work just aswell.

 

[Doctor Drivel]

First for all the extra it will cost go for the 28 boiler instead of 24 as you will get 25% more hot water. Newteam venturi are not designed for combi system and are now out of production i think, although there are some still floating about.

Most thermostatic showers are half decent and will range in price fro £100 to ££££ . All depends what style you want concealeed/exposed/chrome/gold/brass.. and if it can be fitted in your situation .. Most people will prob say Mira the best but Grohe/Aqualisa/ Trevi are all just as good... And the £100 ones work just aswell.

Get one that has an integral pressure equaliser inside - usually called combi compatible. Some makers say this and don't have them inside. Check.

 

[gas4you]

I would definitely go for the 28Kw combi.

On a personal note I always fit the Mira Excel thermostatic shower if I am asked to when I fit a combi.

Never had no complaints yet. Other good makes are out there as well.

 

[chrishutt]

First for all the extra it will cost go for the 28 boiler instead of 24 as you will get 25% more hot water.

Someone's maths a bit dodgy? 4 is not 25% of 24. A 28 kW boiler would give you 17% more hot water than a 24 kW one.

 

[gas4you]

First for all the extra it will cost go for the 28 boiler instead of 24 as you will get 25% more hot water.

Someone's maths a bit dodgy? 4 is not 25% of 24. A 28 kW boiler would give you 17% more hot water than a 24 kW one.

I assumed namsag was talking in relation to the flow rates @ 35C temp rise, 9 or 10 l/m as opposed to 12 l/m approx.

 

[blondebier]

Thanks for the replies.

It looks like a thermostatic is the way to go then. I'll have a look at those makes.

Someone's maths a bit dodgy? 4 is not 25% of 24. A 28 kW boiler would give you 17% more hot water than a 24 kW one.

How significant is the 17%? Am I really going to notice it?

9.8l per minute seems like a hell of a lot of hot water to come out of a shower...

 

[gas4you]

Depends how invigorated you want to feel in the shower

You can always turn it down, but cant get more if you feel it is not enough

 

[namsag]

Chrishutt as g4y pointed out i was refering to the hot water output in litres . Not increase in boiler size

 

[weareleeds]

I have a mira 415 combiforce with a vaillant ecomax 828/2 & works really well