Confidence votes 10.3K. The mass of an object is how much matter is contained within that object. The SI unit of measure for mass is the kilogram. The word mass should be used instead of the term 'weight', which suggests the force of gravity acting upon the object.
1 Installing a standard boiler (80%-85% annual fuel utilization efficiency) typically costs about $2,500-$5,000 for a gas-fired model and $3,000-$6,500 for an oil-fired unit (generally used in areas without municipal gas lines).
The retailer claims it is out of warranty (how long is a cooker supposed to last then?) but parts are covered for free. To get a new door under the warranty would cost me Â£120 for the visit! The manufacturer has ignored my letter.