Checklist for inspectors

1  Check customer name and address and match with plans

2  Check reports what are submitted make sure it includes Project summary, Construction components, work sheet, duct system summary for each zone in house.

3  Check Weather data make sure it is correct for your area

4  Check to make sure there is no hand written data on report (white out)

5  Check for Central ventilation # and ask how this is brought in to house and show on plans

6   Check square ft of house and calculations they should be the same (2 story houses will not match)

7   Infiltration- Method simplified, Construction quality Average, and if any fire places

8   Are the using manufactures data? “Y” or “N” it should show “Y”

9   Equipment selected              1) Manufactures name

2)  Model numbers of Condensing unit, Air-handler and if necessary coil model #

3)   Fan speed setting (if any)

4)   Kw size of heat strips, BTU’s and CFM’s required

5)   CFM’s from manufactures data

6)   Available static pressure

7)   Space thermostat (Heat/Cool)

10   Component reports                1)   Should have the correct construction code or description of material used that match construction of house

2)   Check areas against plans for accuracy (Walls, Windows, Doors, Ceilings & Floors).

3)   Check windows for overhangs, separation and any window treatments, screens, U-values and Solar Heat Gain Coefficients (SHGC)

11    Worksheet-    1)   Entire house gross areas there should not be any zeros in this area if there are it could mean a construction code not used or most                                       Likely data missing for the calculations.

2)   Very important - Load calculations are to be done room-by-room only if done as a block load for each zone then manual D cannot be performed

3)   If no component report given check construction codes if they area the correct ones selected for this project (see Manual J for descriptions)

4)   2 story homes are more difficult review but check the ceiling and floor areas depending on how the house is designed you may not see ceiling areas on the first floors rooms and no areas or different construction code and areas for 2^nd floor

5)   Check ceiling areas if plans have vaulted or tray ceilings the ceiling area will be different

12    Occupants              1 per bedroom and 2 for master bedroom

13   Appliances       This number is deceiving because homes today have different Appliance, Equipment and lighting loads. Most homes of today are closer  to scenario # 1 (in section 22 of manual J) which is about 2,400 BTU’s plus extra BTU’s can be added in individual rooms in a home due to extra load like computers, lighting and electronic equipment. If you see number greater the 1 you may need to look at this line room-by-room to see if extra BTU’s were added or just look at the Kitchen if you see a number higher the 1 there may be a problem

14   Duct loads   at this time there are no printouts to give you information on what the designer has done. All that can be done is checking where the duct is located either un-conditioned or conditioned space

15   Duct Summary           1)   External static pressure

2)   Pressure losses

3)   Available static pressure

4)   Supply / Return available static pressure

5)   Friction rate

6)   Air flow

7)   Total effective length of duct-work

8)   Calculation of the supply air for each room shall be based on the greater of the heating load or sensible cooling load for that room

9)   Friction loss data shall correspond to the type of material used in duct construction.

10)   Ductwork detail         1)   st1 = supply trunk 1

                                                                                                2)   St2 = supply trunk 2  etc.

                                                                                                3)   P = plenum

                                                                                                4)   Rb1 = return branch 1

                                                                                                5)   R = return air plenum

11)   Check velocities - example 500 – 700 fpm for flex duct

12)   Static pressures should be about .10 static (see example below)

Note: Contractor needs to check manufactures data to make to the air handler selected has enough available static pressures to do the job

                       If any inspectors want to give me feed back or think more information should be added please e-mail me