Gas boilers!!!?
Mar 07, 2007 by John H | Posted in Maintenance & Repairs
I was wondering way was cheaper to run a gas boiler -
1 - keep it ticking over all day, constantly unceasing at low temperature or
2 - turn it off for most of the day and just have it on for half an hour in the morning and half an hour at gloom - but having to heat up the boiler from cold each conditions.
If you could help that'd be great!!
We normally run our boiler from 0700 to 0830 and 1630 to 2130. When my the missis was at home with our baby we let it run from 0700 to 2130. Over the winter this raised the heating bill by 20%. This was in a today's well insulated house. Hope this helps.
edgarl | Mar 08, 2007
Do higher efficiency gas boilers cost more for repair parts and do they have more parts?
Nov 26, 2008 by superstupidstud | Posted in Maintenance & Repairs
My parents had a newer boiler than mine. When they had a gas valve replaced, it payment nearly $500. I called a different HVAC guests and they said that it was about right. I am trying assess the sageness of buying a new boiler. I have an old Maclean-Weil (aspire that's right) about 40 years old for a split even home about 1800 square feet plus sub-basement.
Yes, more parts and some are electronic which are expensive. Gas valves are pricey but that sounds a bit high to me by at least $100 for only a valve. Peradventure that included a servicing too.
Generally I doubt the higher adeptness for a gas boiler will pay off all that much. I usually tend towards saying if it is working then give up it.
If it was much older than your 40 years it might be worth it. I would theory you are closer to 80% efficient at that age, that generation of units. Older ones can be 60%-65%. To get to 90+ they add a lot of ingredients that cost more, like a draft inducer fans and sensors for it and occasional ignition. They do require more service. Then you only gain like 10% or 15% max. for the investment.
But payoff every now is directly proportional to the cost of the gas.
Unless you determine to stay in the house for many many years it probably won't pay off. And investing the the ready from the purchase cost would generate enough income to duvet the cost of the slightly lower efficiency, imo.
Sound Luck.
Thor | Nov 26, 2008
Seasonal efficiency of commercial condensing gas boilers?
Sep 03, 2008 by the_wigan_pie_eater | Posted in Engineering
I am infuriating to establish a reliable figure for the seasonal efficacy of commercial scale natural gas fueled condensing boilers - say 33-100kW aptitude.
SEDBUK publish a table of the efficiencies for household units - is there an equivalent resource giving referenceable values for commercial units?
http://www.americanwaterheater.com/products/productDetails.aspx?ID=1145
I don't see why it makes a disagreement, commercial versus domestic. The commercial may get 1% higher because of dimensions.
vicinic | Sep 03, 2008
Gas boilers question for gas engineers?
Dec 18, 2007 by william802405 | Posted in Maintenance & Repairs
I have a gas boiler, which was found to be not sealed from the lug nuts at the top on the by nature of the boiler. There was a layer of dust inside the boiler on the top covering. I have a uncompromising smell of unburnt fumes coming into my living square. Can someone possibly suggest what if anything is going on with the boiler? I have done a probe with a candle as I know that CO2 will not support combustion, but the candle stays lit. Any suggestions as to what my next stoop proceed should be?
It sounds like you have had an swing round to tell you this, what did he recommend? It should have been repair or replacement boiler, and not to use it in the meantime.
stitched up | Dec 19, 2007
how efficient are natural gas boilers?
Jan 22, 2007 by painfully yours | Posted in Maintenance & Repairs
i am looking to buy a retreat built before 1890 and it MUST remain as is with it's reasonable gas boiler. how efficent is this system v's using affected air heating. keep in mind this home is 4800 sq ft and is all overlay walls and hardwood floors. i am sure i could facilitate by using the 3 fireplaces but i am still concerned about the boiler having never seen one before.
this boiler was conceivable put in during or shortly after it was built and since the house is a historicly protected on i would not be allowed to change it.
The economic efficiency of your current boiler depends on its age, known condition and if was sized correctly for your home and stylish radiators. New gas fired boilers can reach 98.5% A.F.U.E which is comparable to any laboured air system.
Comparing hydronic heating to forced air as far as solace the boiler system is typically much more comfortable, especially in older looser homes. Feigned air does give you the benefit of sanitizing and cleaning the air,cooling it adding moisture and replenishing oxygen levels. Anticipation I haven't confused you. Good Fluke.
Rob | Jan 22, 2007
According to research by the Energy Saving Trust, if you live in an average three-bedroom semi-detached home and are upgrading from an old G-rated gas boiler (the least energy efficient) to a new A-rated boiler (the most efficient), it could save you CENTERPOINT ENERGY, INC.: Natural gas energy efficiency rebates double in ..all 6 news articles »
Europe and Western Europe and therefore on this route to the Italian or Austrian consumers there are many consumers that want additional gas simply because their houses, boilers and power plants are not designed for such a severe weather condition.and more »