Gas boiler leak/advice please

[Stuartith]

Hi all, looking for some advice please. So I've got a 25 year old Ideal classic NF40 boiler. We live in a naturally warm house so only have the heating and water on for an hour in the morning and an hour at night. The last week or so we've noticed it's stinking of gas on start up. Pilot light is a healthy blue, flu isn't blocked and fans OK. After about 10/15 mins smells gone. This happens only when it's cold so I'm guessing something is expanding and sealing under heat. No smell when it's off and I've used snoop leak detecter can't see anything. We've turned it off as it's getting worse and got a gas safe engineer we know coming round next week, we'll use immersion for hot water. Fan, both pumps, pcb and ignitor all replaced in last 5 years. Any thoughts on what it might be and could anyone recommend some direct replacements? 3 bed house, 6 rads, hot water storage tank, microbore tubing all to be left in place, just literally fit a direct replacement. It's mounted in the kitchen, flu straight out wall behind it and above a drain if I need a condenser model? Don't really know the difference tbh. Sorry about the war and peace, appreciate any replies! Thanks again

 

[Deleted member 120897]

Sounds dangerous and you’ve done the right thing turning it off. I can’t offer advice as to what it is, as I don’t know, could be a failed flue seal.

You can’t buy new boilers that aren’t condensing.

I think Baxi may do a direct rear flue option.

 

[Stuartith]

Thanks for the reply, I'll have a look at Baxi think it's time to but the bullet and replace ye old Faithfull. Preferably not though lol

 

[ShaunCorbs]

Yes baxi 600 or 800 heat only are both rear or top flue compatible

 

[adomas]

Thanks for the reply, I'll have a look at Baxi think it's time to but the bullet and replace ye old Faithfull.