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Help electric boiler for UFH


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Help, im being asked to help out a member of family's problem... 

 

Long story short (no ashp, gas or oil) but looking for a electric boiler to run approx 40m2 of wet UFH no DHW. Current building regs so not much insulation. What's options on/ recommendations on electric boilers

@Nickfromwales

 

Edited by Alexphd1
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I have always held the view an electric boiler is a solution looking for something to solve.

 

If you are going to heat the house with electric resistance heating, just fit individual panel heaters, controlable room by room.  

 

An electric boiler just adds complications and cost to achieve the same aim (if you are lucky) of heating the house by direct electric resistance heating.

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It's a loft of a garage that's being converted to a office. There's already wet UFH installed, they where hoping/planning to get a gas feed from main house but no extra capacity in existing gas supply. To upgrade gas supply was mega money. 

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8 minutes ago, Alexphd1 said:

loft of a garage that's being converted to a office. There's already wet UFH installed, they where hoping/planning to get a gas feed from main house but no extra capacity in existing gas supply.

So they have gas already, why not just extend the existing heating system to do the UFH?  Most boiler are massively oversized, so should have plenty of capacity spare.  Even if the the garage is remote from the house, it should still be possible and will be way cheaper to run than an electric boiler.

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12 minutes ago, Alexphd1 said:

It's a loft of a garage that's being converted to a office. There's already wet UFH installed, they where hoping/planning to get a gas feed from main house but no extra capacity in existing gas supply. To upgrade gas supply was mega money. 

You surely did not ask for a new gas connection with a new meter and a new set of bills just to heat a garage conversion?

 

Just connect it to the house gas supply.  The extra load is not going to bring the grid down.  Or just the flow and return from the existing heating system, unless there is a huge distance from house to garage.

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The original plan was to just take a feed of at the meter but the heating guy said they couldn't as it already supplies 2x 24kw boilers. The gas pipe was run in to the garage from the main house under the expensive new resin bound driveway. Would be a major operation to add in a extra flow and return. They priced to increase the gas pipe into the existing meter. The whole job is a cluster fxxk. I was looking at that heatrea sadia amptec 4 ufh model.

 

Ps I'm not doing the job my tools are long sold and it's over 400 miles from where i live

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What sort of property needs two 24kW boilers?  That's 48kW of heat?   This is clearly not your average house.

 

Clearly cost (running cost) is not an issue to the owners so just slap in your electric boiler.  Unless you find they already have three 10kW electric showers and the electric supply is also already overloaded.

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Posted (edited)

It's a large old victorian house. One boiler does upstairs radiator and bottom coil in UVC and the other does the downstairs rads and the top coil of UVC (back up). Probably could of gotten away with 2x18kw.

 

It's just they have been shafted with poor trades and botched jobs. Just trying to help them out.

Edited by Alexphd1
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12 hours ago, SteamyTea said:

A couple of Willis heater in a home made manifold.

 

Yup. 
Cheaper than shoplifting. 
 

ASHP is a no brainer if you can, otherwise (as it’s an attic essentially) then A2A air con for heat and cool. Average CoP north of 3.
 

Air conditioning in an office in a loft in the summer will be heavenly, and I doubt it would be otherwise survivable. 
Windows wide open / drafts / noise etc isn’t always practical in an office, unless it’s in the middle of nowhere and deadly quiet? 
 

I’d sack the UFH off and go A2A. 

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