- Joined
- 27 Sep 2022
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Hello,
I am not in UK so please be gentle!
I have an old heat only boiler 120,000 btu for CH with no DHW installed downstairs and an expansion tank installed upstairs. For DHW we use a separate boiler.
For CH the property has 3 radiators 600x1200 Type 11 and 1 electric convector for a huge lounge 700 sq.ft. installed. All copper piping is 15mm with flow and return.
My gas usage in winter months go as high as 4 HM3 or 15 MMBTU with central heating running for 10 hours daily (5-10 a.m and 4 -9p.m) at 60degC. We are billed in HM3 or MMBTU where I live, I can share my gas usage history from my service provider. The pilot stays on all the time of the boiler. Heat loss in my property is about 10-12kw which I have calculated myself.
Questions I have for knowledgable members are
Does this consumption seem high to you?
Is this boiler oversized for my needs? If yes, should I install a condensing boiler and will my gas usage go down with condensing boiler?
The boiler is about 8 years old and I changed the ciruclation pump last year.
I don't have any TSV's installed on radiators except an old style dial type thermostat on electric convector and I am not sure if it works or not as I haven't seen blower go off ever.
Thanks in advance.
I am not in UK so please be gentle!
I have an old heat only boiler 120,000 btu for CH with no DHW installed downstairs and an expansion tank installed upstairs. For DHW we use a separate boiler.
For CH the property has 3 radiators 600x1200 Type 11 and 1 electric convector for a huge lounge 700 sq.ft. installed. All copper piping is 15mm with flow and return.
My gas usage in winter months go as high as 4 HM3 or 15 MMBTU with central heating running for 10 hours daily (5-10 a.m and 4 -9p.m) at 60degC. We are billed in HM3 or MMBTU where I live, I can share my gas usage history from my service provider. The pilot stays on all the time of the boiler. Heat loss in my property is about 10-12kw which I have calculated myself.
Questions I have for knowledgable members are
Does this consumption seem high to you?
Is this boiler oversized for my needs? If yes, should I install a condensing boiler and will my gas usage go down with condensing boiler?
The boiler is about 8 years old and I changed the ciruclation pump last year.
I don't have any TSV's installed on radiators except an old style dial type thermostat on electric convector and I am not sure if it works or not as I haven't seen blower go off ever.
Thanks in advance.