Condensation vs Nuaire Drimaster

[gashart]

Just a cheap combi unit from Amazon, but temp is always within 0.1c of our house heating digital thermostat and humidity is again almost the same as what the dehumidify unit meter says as well. Plus not after 100% accurate, just an indication trend.

[CornishRob]

Hoping to order one of these tomorrow on the group buy as we have recently moved into a new house which is giving high humidity readings and my wife is complaining it’s possibly causing her asthma to flare up.

Just wondering if the heated unit is worth it? Amazon reviews seem to suggest the heating part is t great?

[RobB_]

How much heat should I feel with the heater set to max (Turning the blue arrow)? Should it be noticeable or is it intended to just take the edge of the chill?

[timberman]

Ours is turned to slightly off the max setting and the air coming through doesn't feel particularly warm but also not cold, so I think perhaps it's just taking the edge off the cold air coming through from the loft.

[Mikebentley]

I looked at getting the NOX kit for mine, £290 + delivery from Nuaire direct. I tried for discount but they weren’t interested. Purchased online for £185 delivered….I had to wait a week whilst they got it ordered direct from Nuaire who send it out to me. You couldn’t make this up.

[RobB_]

timberman said:

Ours is turned to slightly off the max setting and the air coming through doesn't feel particularly warm but also not cold, so I think perhaps it's just taking the edge off the cold air coming through from the loft.

Thanks 👍

[B'stard Child]

Anyone know how to turn the heater on??

I thought the controller I purchased with the unit would turn the heater on - it has a button on it that says heater on and the light goes green when you press it but it's not coming on!!!

[timberman]

Are you sure it's not on?
On ours, the air coming through is still on the cool side even when turned to max, just not as cold as it would be without it.

[B'stard Child]

timberman said:

Are you sure it's not on?
On ours, the air coming through is still on the cool side even when turned to max, just not as cold as it would be without it.

It's connected to a plug that has a power monitor - it's on setting 2 for flow and never shows it drawing anymore than 6W - so pretty sure it's not heating

[robemcdonald]

What temperature have you got the thermostat set to? If it's on autoheat mode and the temperature is set to the minimum (fully anti-clockwise = 5ºc) then its probably not active. Try turning the thermostat fully clockwise. The activation temp will then be 15ºc.
This control can be found on the diffuser (take the cover off)

You can find the instruction manual here
https://www.nuaire.co.uk/documentstore/IandM/67175...

let us know if that answers your question.

[B'stard Child]

robemcdonald said:

What temperature have you got the thermostat set to? If it's on autoheat mode and the temperature is set to the minimum (fully anti-clockwise = 5ºc) then its probably not active. Try turning the thermostat fully clockwise. The activation temp will then be 15ºc.
This control can be found on the diffuser (take the cover off)

You can find the instruction manual here
https://www.nuaire.co.uk/documentstore/IandM/67175...

let us know if that answers your question.

Perfect - the thermostat was on min - wound it up and it pulls 430 w

Thank you very much

[robemcdonald]

B'stard Child said:

robemcdonald said:

What temperature have you got the thermostat set to? If it's on autoheat mode and the temperature is set to the minimum (fully anti-clockwise = 5ºc) then its probably not active. Try turning the thermostat fully clockwise. The activation temp will then be 15ºc.
This control can be found on the diffuser (take the cover off)

You can find the instruction manual here
https://www.nuaire.co.uk/documentstore/IandM/67175...

let us know if that answers your question.

Perfect - the thermostat was on min - wound it up and it pulls 430 w

Thank you very much

No problem. It’s my job (in a very roundabout way)

[B'stard Child]

robemcdonald said:

No problem. It’s my job (in a very roundabout way)

But it's still appreciated hence why it's good to say thank you

[robemcdonald]

B'stard Child said:

robemcdonald said:

No problem. It’s my job (in a very roundabout way)

But it's still appreciated hence why it's good to say thank you

[ac505]

I’ve been skimming through the posts, all very positive. One question, my loft is damp, and doesn’t have great airflow due to the design, no opportunity to install soffit or ridge ventilation so I’ve added some slate vents and there are a few air gaps in other places. My guess the dampness in the loft is primarily due to the moist air making it’s way in from the house, would a PIV eventually dry the loft space out by drawing the damp air in, through the house and back out?

[Steevo456]

Does anyone on here have an experience of fitting/running a PIV in a vacant house with the heating turned off?

I get the theory of replacing warm humid air in the house with cooler, drier air from outside....but if the temperature of the air being brought in is higher than the fabric of the house is there a risk that this increases condensation?

[B'stard Child]

Steevo456 said:

Does anyone on here have an experience of fitting/running a PIV in a vacant house with the heating turned off?

I get the theory of replacing warm humid air in the house with cooler, drier air from outside....but if the temperature of the air being brought in is higher than the fabric of the house is there a risk that this increases condensation?

Summer or Winter?

[Steevo456]

Thanks for your reply.

I was thinking winter rather than summer, but would be interested in the circumstances of both please.

[Trustmeimadoctor]

Usually having no heating invalidates house insurance if the background temp of what is dictated in the docs isn't maintained

[B'stard Child]

Steevo456 said:

Thanks for your reply.

I was thinking winter rather than summer, but would be interested in the circumstances of both please.

My only experience of Winter is I went on Holiday for 2 weeks in November - CH and HW was turned off but I kept the PIV unit on at the same schedule it always runs 0830 to 1400 during the day and 0000 to 0600 during the night

The humidity level in the house achieved levels I don't normally see when it's occupied and heating on

Normally Temps are in high teens and humidity low to mid 50's

House temp got down to 10 deg and humidity levels mid 70's.

Loft temps got down to 5 deg and humidity levels mid 80's (however the loft temps varied a lot more than the house due to solar gain in the day)

I will leave the heating on at a set back temp next time we go on holiday in November

Summer the solar gain in the loft means the unit turns itself off if the temp gets too high - but over night it provides useful cooling to help the house cool down so it's on 24/7 during the summer