Ask The Trades - Print Page

Ask The Trades
https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Plumbing Questions >> warm air heating https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1123961740 Message started by sparxxxx on Aug 13^th, 2005, 8:35pm

Title: warm air heating
Post by sparxxxx on Aug 13^th, 2005, 8:35pm

Can any1 give advise on warm air heating in a bungalow.
I know there are purpose made systems that consist of a free standing module that has to be placed somewhere within the occupied area, but they take up a lot of space and seem to be only affordable by lottery winners!
I'm thinking along the lines of a commercial heating only fan coil unit/units installed in the loft with a heating coil supplied by a standard central heating gas boiler.
I realise there would be problems providing adequate insulation to the fancoil units.
Any advice much appreciated - Thanks

Title: Re: warm air heating
Post by CWatters on Aug 13^th, 2005, 10:04pm

Any particular reason for wanting a warm air system?

Title: Re: warm air heating
Post by billythekid on Aug 14^th, 2005, 1:42am

wrote on Aug 13^th, 2005, 8:35pm:

I know there are purpose made systems that consist of a free standing module that has to be placed somewhere within the occupied area,

they could be placed in the loft i think..

wrote on Aug 13^th, 2005, 8:35pm:

seem to be only affordable by lottery winners!

well, thats a different problem.

btk (unhelpfully) ;)

Title: Re: warm air heating
Post by sparxxxx on Aug 14^th, 2005, 7:38am

CW I can't stand radiators and warm air is instant heat.

Title: Re: warm air heating
Post by thescruff on Aug 14^th, 2005, 7:54am

Interesting comment sparxxxxx

Warm air, :-X bit like living in a permanent dust storm.

If you insist on going down the environmentally unfriendly way then consider air con units that fit into the ceiling.

Title: Re: warm air heating
Post by JerryD on Aug 14^th, 2005, 9:43am

A big housing estate near me was built in the seventies, all with warm air heating. Nearly every one has since been converted to a 'wet' system....................

Title: Re: warm air heating
Post by CWatters on Aug 14^th, 2005, 10:14am

wrote on Aug 14^th, 2005, 7:38am:

CW I can't stand radiators and warm air is instant heat.

I doubt the a warm air boiler is any more powerful than a wet boiler so in theory it will take roughly the same amount of time to heat the whole house (if you ignore the few mins it takes for a radaitor system to warm up first).

Various web sites will tell you that warm air heating is bad for those with Asthma. I'm going with UFH throughout for my new house because I also dislike radiators.

Title: Re: warm air heating
Post by thescruff on Aug 14^th, 2005, 10:40am

wrote on Aug 14^th, 2005, 10:14am:

Think you're find that warm air is more expensive to run as there's no surface temperature to hold the heat.

Its the fine layer of dust that settles over the house that Asthma suffers love to hate, in fact it's a very unhealthy atmosphere all round, spreading bugs and germs at ramdom.

Title: Re: warm air heating
Post by sparxxxx on Aug 14^th, 2005, 10:51am

Scruff warm air heating as i described is not environmentally unfriendly, nearly every modern office block in this country is heated by some sort of warm air system.

The system installed in the 60's and 70's were direct gas fired heat to air and were poorly designed, poorly constructed and very inefficient.

Title: Re: warm air heating
Post by Village_Idiot on Aug 14^th, 2005, 10:51am

I too have the gas warm air dust blower, it's on the list of things that are going to get replaced
to add to the job is the fact it's in a cupboard thats lined with what i'm assured is not asbestos but i would be as well to get it tested anyway

Title: Re: warm air heating
Post by thescruff on Aug 14^th, 2005, 11:15am

wrote on Aug 14^th, 2005, 10:51am:

Perhaps you know I've been in the industrial game for 45 + years Sparxxxxx.

You're comment about modern units are of course correct, and they have effective filters to prevent the spread of most bugs and germs.

The biggest single factor in the spread of legionelle is :-X the filters should be changed every 6 months, something that dosen't happen in real life.

Title: Re: warm air heating
Post by sparxxxx on Aug 14^th, 2005, 11:40am

Scruff. legionella does not grow on air filters. It needs moisture and is most commoly found in cooling tower ponds due to a poor water treatment regime.

I've only been in the building services industry for 39 years, but have a very wide experience in many different areas of industry.

Title: Re: warm air heating
Post by JerryD on Aug 14^th, 2005, 3:39pm

Don't warm air systems create draughty zones within rooms? Although the air may be 'warm' it's the air movement that causes the draughty feeling.

Title: Re: warm air heating
Post by Chaddy on Aug 14^th, 2005, 5:30pm

No jerry thats flatulants ;D :o

Title: Re: warm air heating
Post by JerryD on Aug 14^th, 2005, 5:49pm

You may be right chaddy ;D ;D

Title: Re: warm air heating
Post by thescruff on Aug 14^th, 2005, 7:23pm

Areas of particular concern are:

* Water systems involving a cooling tower or evaporative condenser

* Air-conditioning systems, especially those incorporating humidifiers or air-washers

* Hot and cold water systems

* Spa baths, jacuzzis and other pools in which water is agitated and re-circulated

* Other systems where water is stored between the temperatures of 20-45°C and which produce an aerosol or spray

Title: Re: warm air heating
Post by sparxxxx on Aug 15^th, 2005, 5:59am

Where did you copty and paste that from, glad I have increased your experience. Not air filters then ;D