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Rating estimate based on year build

Sine1 · 2009-10-22 10:36:31

Having calculated out a D1 rating for a dormer dwelling, build '94, no changes have been made to original build - just wondering if other similar dwellings have got a D1 rating. (As no changes to original work much of the inputs into DEAP were default values.) Just thinking if no work has been carried out to original…

22-10-2009 11:36am

#1

Sine1

Registered Users Posts: 9 ✭

Join Date: June 2009

Posts: 4

Having calculated out a D1 rating for a dormer dwelling, build '94, no changes have been made to original build - just wondering if other similar dwellings have got a D1 rating. (As no changes to original work much of the inputs into DEAP were default values.)

Just thinking if no work has been carried out to original dwelling, the ratings for a similar build dwelling within the same year should have similar ratings

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Comments

#2 22-10-2009 5:08pm

Bhoypaul

Closed Accounts Posts: 41 ✭

Join Date: April 2007

Posts: 41

Most will come in around D1 and D2. However heating systems vary from house to house. You can ahve as much as 10% difference in the efficiency of a boiler which makes a big difference in the rating.
Also many houses don't have the hot water tank lagged: this one item can be the difference from one catagory to another.

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