Appendix B   

Applicable Tables and Language from Standards and RACM

Appendix B is a collection of common used tables and language that are referenced in the Residential Compliance Manual which includes excerpts from the 2013 Building Energy Efficiency Standards for Residential and Nonresidential Buildings and the Appliance Efficiency Regulations.

List of Appendix B Tables

FIGURE 100.1-A—CALIFORNIA CLIMATE ZONES

 

TABLE 100.0-A APPLICATION OF STANDARDS

Occupancies

Application

Mandatory

Prescriptive

Performance

Additions/Alterations

General Provisions

100.0, 100.1, 100.2, 110.0, 110.10

Nonresidential, High-Rise Residential, And Hotels/Motels

General

140.0

140.2

140.1

141.0

Envelope (conditioned)

110.6, 110.7, 110.8, 120.7

140.3

Envelope (unconditioned process spaces)

N.A.

140.3(c)

HVAC (conditioned)

110.2, 110.5, 120.0-120.5, 120.8

140.4

Water Heating

110.3, 120.3, 120.8

140.5

Indoor Lighting (conditioned, process spaces)

110.9, 120.8, 130.0, 130.1, 130.4

140.3(c), 140.6

Indoor Lighting (unconditioned and parking garages)

110.9, 120.8, 130.0, 130.1, 130.4

140.3(c), 140.6

N.A.

Outdoor Lighting

 

110.9, 130.0, 130.2, 130.4

140.7

Building Electrical Power

130.5

N.A.

Pool and Spa Systems

110.4, 150.0(p)

N. A.

N. A.

Solar Ready Buildings

110.10

N.A.

N.A.

Covered Processes1

Envelope, Ventilation, Process Loads

 

110.2, 120.6, 120.8

 

140.9

140.1

120.6, 140.9

Signs

Indoor and Outdoor

130.0, 130.3

140.8

N.A.

141.0

Low-Rise Residential

General

150.0

150.1(a, c)

150.1(a, b)

150.2

Envelope (conditioned)

110.6, 110.7, 110.8, 150.0(a-e, g, l)

HVAC (conditioned)

110.2, 110.5, 150.0(h, i, m, o)

Water Heating

110.3, 150.0(j, n)

Indoor Lighting (conditioned, unconditioned and parking garages)

110.9, 130.0, 150.0(k)

Outdoor Lighting

110.9, 130.0, 150.0(k)

Pool and Spa Systems

110.4, 150.0(p)

N. A.

N.A.

N.A.

Solar Ready Buildings

110.10

N. A.

N.A.

N.A.

1 Nonresidential, high-rise and hotel/motel buildings that contain covered processes may conform to the applicable requirements of both occupancy types 'listed in this table.

 

TABLE 110.2-A ELECTRICALLY OPERATED UNITARY AIR CONDITIONERS AND CONDENSING UNITS – MINIMUM EFFICIENCY REQUIREMENTS

Equipment Type

Size Category

Efficiency a

Test Procedurec

Before 1/1/2015

After 1/1/2015

 

Air conditioners,
air cooled both split system and single package

≥ 65,000 Btu/h and

< 135,000 Btu/h

11.2 EERb

11.4 IEERb

Applicable minimum efficiency values as determined by Title 20 California Code of Regulations Section 1605.1

 

ANSI/AHRI 340/360

 

≥ 135,000 Btu/h and

< 240,000 Btu/h

11.0 EERb

11.2 IEERb

ANSI/AHRI 340/360

≥ 240,000 Btu/h and

< 760,000 Btu/h

10.0 EERb

10.1 IEERb

≥ 760,000 Btu/h

9.7 EERb
9.8 IEERb

 

Air conditioners,
water cooled

≥ 65,000 Btu/h and

< 135,000 Btu/h

12.1 EERb
12.3 IEERb

ANSI/AHRI 340/360

≥135,000 Btu/h and

< 240,000 Btu/h

12.5 EERb
12.5 IEERb

ANSI/AHRI 340/360

≥240,000 Btu/h and

< 760,000 Btu/h

12.4 EERb
12.6 IEERb

ANSI/AHRI 340/360

≥ 760,000 Btu/h

12.2 EERb
12.4 IEERb

ANSI/AHRI 340/360

Air conditioners,  evaporatively cooled

≥65,000 Btu/h
 and

< 135,000 Btu/h

12.1 EERb
12.3 IEERb

ANSI/AHRI 340/360

≥ 135,000 Btu/h and

< 240,000 Btu/h

12.0 EERb
12.2 IEERb

ANSI/AHRI 340/360

≥240,000 Btu/h and

< 760,000 Btu/h

11.9 EERb
12.1 IEERb

ANSI/AHRI 340/360

≥ 760,000 Btu/h

11.7 EERb
11.9 IEERb

ANSI/AHRI 340/360

Condensing units,
air cooled

≥ 135,000 Btu/h

10.5 EER
11.8 IEER

ANSI/AHRI 365

 

Condensing units,
water cooled

≥ 135,000 Btu/h

13.5 EER
14.0 IEER

Condensing units, evaporatively cooled

≥ 135,000 Btu/h

13.5 EER
14.0 IEER

a.  IEERs are only applicable to equipment with capacity control as per ANSI/AHRI 340/360 test procedures

b.  Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat.

c.  Applicable test procedure and reference year are provided under the definitions.

 

Standards Tables 110.2-B

TABLE 110.2-B UNITARY AND APPLIED HEAT PUMPS, MINIMUM EFFICIENCY REQUIREMENTS

Equipment Type

Size Category

Subcategory or Rating Condition

Efficiency a

Test Procedure c

Air Cooled

(Cooling Mode)

≥ 65,000 Btu/h
 and
  < 135,000 Btu/h

Split system and
single package

11.0 EERb

11.2 IEERb

ANSI/AHRI 340/360

 

≥ 135,000 Btu/h and

< 240,000 Btu/h

10.6 EERb

10.7 IEERb

≥  240,000 Btu/h

9.5 EERb
9.6 IEERb

Water source (cooling mode)

≥ 65,000 Btu/h
and  
< 135,000 Btu/h

86ºF entering water

12.0 EER

ISO-13256-1

Groundwater source (cooling mode)

< 135,000 Btu/h

59ºF entering water

16.2 EER

ISO-13256-1

Ground source (cooling mode)

< 135,000 Btu/h

77ºF entering water

13.4 EER

ISO-13256-1

Water source water-to-water (cooling mode)

< 135,000 Btu/h

86ºF entering water

10.6 EER

ISO-13256-2

Groundwater source water-to-water (cooling mode)

< 135,000 Btu/h

59ºF entering water

16.3 EER

ISO-13256-1

Ground source brine-to-water (cooling mode)

< 135,000 Btu/h

77ºF entering water

12.1 EER

ISO-13256-2

Air Cooled
(Heating Mode)
Split system and
single package

≥ 65,000 Btu/h
and  
< 135,000 Btu/h
(cooling capacity)

47° F db/43° F wb  
outdoor air

3.3 COP

ANSI/AHRI 340/360

17° F db/15° F wb  
outdoor air

2.25 COP

≥ 135,000 Btu/h
(cooling capacity)

47° F db/43° F wb  
outdoor air

3.2 COP

 

17° F db/15° F wb  
outdoor air

2.05 COP

Water source (heating mode)

< 135,000 Btu/h
(cooling capacity)

68ºF entering water

4.2 COP

ISO-13256-1

Groundwater source (heating mode)

< 135,000 Btu/h
(cooling capacity)

50ºF entering water

3.6 COP

ISO-13256-1

Ground source (heating mode)

< 135,000 Btu/h
(cooling capacity)

32ºF entering water

3.1 COP

ISO-13256-1

Water source water-to-water (heating mode)

< 135,000 Btu/h
(cooling capacity)

68ºF entering water

3.7 COP

ISO-13256-2

Groundwater source water-to-water (heating mode)

< 135,000 Btu/h
(cooling capacity)

50ºF entering water

3.1 COP

ISO-13256-2

Ground source brine-to-water (heating mode)

< 135,000 Btu/h
(cooling capacity)

32ºF entering water

2.5 COP

ISO-13256-2

a  IEERs are only applicable to equipment with capacity control as per ANSI/AHRI 340/360 test procedures.

b  Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat.

c  Applicable test procedure and reference year are provided under the definitions.

Standards Tables 110.6-A and 110.6-B

TABLE 110.6-A  DEFAULT FENESTRATION PRODUCT U-FACTORS

FRAME

PRODUCT TYPE

SINGLE PANE 3, 4
U-FACTOR

DOUBLE PANE 1, 3, 4
U-FACTOR

GLASS BLOCK 2,3
U-FACTOR

Metal

 

Operable

1.28

0.79

0.87

Fixed

1.19

0.71

0.72

Greenhouse/garden window

2.26

1.40

N.A.

Doors

1.25

0.77

N.A.

Skylight

 

1.98

1.30

N.A.

Metal, Thermal Break

 

Operable

N.A.

0.66

N.A.

Fixed

N.A.

0.55

N.A.

Greenhouse/garden window

N.A.

1.12

N.A.

Doors

N.A.

0.59

N.A.

Skylight

N.A.

1.11

N.A.

 

Nonmetal

 

Operable

0.99

0.58

0.60

Fixed

1.04

0.55

0.57

Doors

0.99

0.53

N.A.

Greenhouse/garden windows

1.94

1.06

N.A.

Skylight

1.47

0.84

N.A.

For all dual-glazed fenestration products, adjust the listed U-factors as follows:

Add 0.05 for products with dividers between panes if spacer is less than 7/16 inch wide.

Add 0.05 to any product with true divided lite (dividers through the panes).

Translucent or transparent panels shall use glass block values when not rated by NFRC 100.

Visible Transmittance (VT) shall be calculated by using Reference Nonresidential Appendix NA6.

Windows with window film applied that is not rated by NFRC 100 shall use the default values from this table.

•             

TABLE 110.6-B DEFAULT SOLAR HEAT GAIN COEFFICIENT (SHGC)

FRAME TYPE

PRODUCT

GLAZING

 

FENESTRATION PRODUCT SHGC

Single Pane2,3
SHGC

Double Pane2,3
SHGC

Glass Block1,2
SHGC

Metal

Operable

Clear

0.80

0.70

0.70

Fixed

Clear

0.83

0.73

0.73

Operable

Tinted

0.67

0.59

N.A.

Fixed

Tinted

0.68

0.60

N.A.

Metal, Thermal Break

Operable

Clear

N.A.

0.63

N.A.

Fixed

Clear

N.A.

0.69

N.A.

Operable

Tinted

N.A.

0.53

N.A.

Fixed

Tinted

N.A.

0.57

N.A.

Nonmetal

Operable

Clear

0.74

0.65

0.70

Fixed

Clear

0.76

0.67

0.67

Operable

Tinted

0.60

0.53

N.A.

Fixed

Tinted

0.63

0.55

N.A.

Translucent or transparent panels shall use glass block values when not rated by NFRC 200.

Visible Transmittance (VT) shall be calculated by using Reference Nonresidential Appendix NA6.

Windows with window film applied that is not rated by NFRC 200 shall use the default values from this table.

 

Standards Tables 150.1-A

STANDARDS TABLE 150.1-A COMPONENT PACKAGE A

 

Climate Zone

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Building Envelope

 

Insulation1

 

Roofs /Ceilings

    U / R-Value

U 0.025

/R38

U 0.031/R 30

U 0.025 /R 38

Walls

Above Grade

2x4

Framed2

U 0.065

/R 15+4/ or R 13+5

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Mass Wall Interior3

U 0.070

/R 13

U 0.059

/R 17

Mass Wall Exterior3

U 0.125

/R 8.0

U 0.070

/R 13

Below Grade

Below Grade Interior3

U 0.070

/R 13

U 0.066

/R 15

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Below Grade Exterior3

U 0.200

/R 5.0

U 0.100

/R 10

U 0.053

/R 19

Floors

Slab Perimeter

NR

U 0.58

/R 7

Raised

U 0.037 /R 19

 

 

 

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Concrete Raised

U 0.092

R 8.0

U 0.269

/R 0.0

U

0.092

/R 8.0

U

0.138

/R 4.0

U

0.092

/R 8.0

U

0.092

/R 8.0

U

0.138

/R 4.0

U

 0.092

/R 8.0

Radiant Barrier

 

NR

REQ

NR

 

Building Envelope

Roofing Products

Low-

sloped

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Aged Solar Reflectance

NR

0.63

NR

0.63

NR

Thermal Emittance

 

NR

0.75

NR

0.75

NR

Steep

Sloped

Aged Solar Reflec-

tance

NR

0.20

NR

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Thermal

Emittance

NR

0. 75

NR

Fenestration

Maximum U-factor4

0.32

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Maximum SHGC5

NR

0.25

NR

0.25

NR

0.25

Maximum Total Area

20%

Maximum West Facing Area

NR

5%

NR

5%

NR

5%

 

TABLE 150.1-A COMPONENT PACKAGE A (continuation)

 

 

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

HVAC SYSTEM

 

Space Heating

Electric Resistance Allowed

Not Allowed

If gas, AFUE

Minimum

If Heat Pump, HSPF6

Minimum

Space Cooling

SEER

 

Minimum

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Refrigerant Charge Verification or Charge Indicator Display

NR

REQ

NR

REQ

NR

Whole House Fan7

NR

REQ

NR

NR

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Central System Air Handler

Central Fan Integrated Ventilation Systems Fan Efficacy

REQ

Ducts

Duct Insulation

R-6

R-8

R-6

R-8

R-8

R-8

 

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Water Heating

All Buildings

System Shall meet Section 150.1(c)8

 

 

Footnote requirements to TABLE 150.1-A.

1.   The U-factors/R-values shown for ceiling, wall and raised floor insulation are for wood-frame construction with insulation installed between the framing members.  For alternative construction assemblies, see Section 150.1(c)1A, B and C.

2.   U-factors can be met by cavity insulation alone or with continuous insulation alone, or with both cavity and continuous insulation that results in a U-factor equal to or less than the U-factor shown.  “R-15+4” means R-15 cavity insulation plus R-4 continuous insulation.  Any combination of cavity insulation and/or continuous insulation that results in a U-factor equal to or less than 0.065 is allowed, such as R-13+5.  

3    Mass wall has a thermal heat capacity greater than or equal to 7.0 Btu/h-ft2.  Below grade “interior” denotes insulation installed on the inside surface of the wall.  Below grade “exterior” denotes insulation installed on the outside surface of the wall.

4.   The installed fenestration products shall meet the requirements of Section 150.1(c)3.

5.   The installed fenestration products shall meet the requirements of Section 150.1(c)4.

6.   HSPF means "heating seasonal performance factor."

7.   When whole house fans are required (REQ), only those whole house fans that are listed in the Appliance Efficiency Directory may be installed. Compliance requires installation of one or more WHFs whose total airflow CFM is capable of meeting or exceeding a minimum 2 cfm/square foot of conditioned floor area per Section 150.1(c)12.

8.   A supplemental heating unit may be installed in a space served directly or indirectly by a primary heating system, provided that the unit thermal capacity does not exceed 2 kilowatts or 7,000 Btu/hr and is controlled by a time-limiting device not exceeding 30 minutes.

 

Standards Tables 150.2-A Aged Solar Reflectance Insulation Trade off Table

Table 150.2-A  Aged Solar Reflectance Insulation Trade off Table

Aged Solar Reflectance

Roof Deck Insulation

R-value

 

Aged Solar Reflectance

Roof Deck Insulation

R-value

0.62-0.60

2

0.44-0.40

12

0.59-0.55

4

0.39-0.35

16

0.54-0.50

6

0.34-0.30

20

0.49-0.45

8

0.29-0.25

24

 

Residential Table – Vintage Table Values

TABLE R3-50 – DEFAULT ASSUMPTIONS FOR EXISTING BUILDINGS – VINTAGE TABLE VALUES

Default Assumptions for Year Built (Vintage)

Conservation Measure

Before 1978

1978 to 1983

1984 to 1991

1992 to 1998

1999 -2000

2001-2003

2004-2005

2006 and 2012

2013 and Later

INSULATION U-FACTOR

 

 

 

 

 

 

 

 

 

 Roof/Ceiling

 

0.079

0.049

0.049

0.049

0.049

0.049

0.049

0.049

 

 Wall

 

0.356

0.110

0.110

0.102

0.102

0.102

0.102

0.102

 

 Raised Floor –Crawl Space

0.099

0.099

0.099

0.046

0.046

0.046

0.046

0.046

 

Cool

Roof

 

0.10

0.10

0.10

0.10

0.10

0.10

0.10

Pres Pkg.

 

Radiant Barrier

 

None

None

None

None

None

None

Pres Pkg.

Pres Pkg.

 

 Raised Floor-No Crawl Space

0.238

0.238

0.238

0.064

0.064

0.064

0.064

0.064

 

 Slab Edge

F-factor

0.73

0.73

0.73

0.73

0.73

0.73

0.73

0.73

 

 Ducts

 

R-2.1

R-2.1

R-2.1

R-4.2

R-4.2

R-4.2

R-4.2

Pres Pkg.

 

LEAKAGE

 

 

 

 

 

 

 

 

 

Building (SLA)

4.9

4.9

4.9

4.9

4.9

4.9

4.9

4.9

 

Duct Leakage Factor (See Table 4-13)

0.86

0.86

0.86

0.86

0.86

0.89

0.89

0.89

 

FENESTRATION

U-factor

Use Standards Table 110.6-A, §110.6 for all Vintages

 

SHGC

Use Standards Table 110.6-B, §110.6 for all Vintages

 

Shading Dev.

Use Table R3-27 and R3-28 for all Vintages in the Residential ACM Manual – Performance Approach

 

SPACE HEATING EFFICIENCY

 Gas Furnace (Central) AFUE

0.75

0.78

0.78

0.78

0.78

0.78

0.78

0.78

 

  Gas Heater (Room)    AFUE

0.65

0.65

0.65

0.65

0.65

0.65

0.65

0.65

 

Hydronic/Comb Hydronic

0.78

0.78

0.78

0.78

0.78

0.78

0.78

0.78

 

 Heat Pump

 HSPF

5.6

5.6

6.6

6.6

6.8

6.8

6.8

7.4

 

 Electric Resistance HSPF

3.413

3.413

3.413

3.413

3.413

3.413

3.413

3.413

 

Electric Resistance Radiant HSPF

3.55

3.55

3.55

3.55

3.55

3.55

3.55

3.55

 

SPACE COOLING EFFICIENCY

 

 

 

 

 

 

 

 

 

 All Types,

SEER

 

8.0

8.0

8.9

9.7

9.7

9.7

9.7

13.0

 

WATER HEATING

 

 

 

 

 

 

 

 

 

Energy Factor

 

0.525

0.525

0.525

0.525

0.575

0.575

0.575

0.575

 

 

 

 

 

 

 

 

 

 

 

Appliance Efficiency Standards from Section 1605.1

Table B-2Standards for Room Air Conditioners and Room Air-Conditioning Heat Pumps

Appliance

Louvered
Sides

Cooling
Capacity (Btu/hr)

Minimum
EER

Room Air Conditioner

Yes

< 6,000

9.7

Room Air Conditioner

Yes

≥ 6,000 – 7,999

9.7

Room Air Conditioner

Yes

≥ 8,000 – 13,999

9.8

Room Air Conditioner

Yes

≥ 14,000 – 19,999

9.7

Room Air Conditioner

Yes

≥ 20,000

8.5

Room Air Conditioner

No

< 6,000

9.0

Room Air Conditioner

No

≥ 6,000 – 7,999

9.0

Room Air Conditioner

No

≥ 8,000 – 19,999

8.5

Room Air Conditioner

No

≥ 20,000

8.5

Room Air Conditioning Heat Pump

Yes

< 20,000

9.0

Room Air Conditioning Heat Pump

Yes

≥ 20,000

8.5

Room Air Conditioning Heat Pump

No

< 14,000

8.5

Room Air Conditioning Heat Pump

No

≥ 14,000

8.0

Casement-Only Room Air Conditioner

Either

Any

8.7

Casement-Slider Room Air Conditioner

Either

Any

9.5

 

 

Table B-3 Standards for Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps

Appliance

Mode

Cooling Capacity (Btu/hr)

Minimum

EER or COP

Packaged terminal air conditioners and packaged terminal heat pumps

Cooling

≤ 7,000

8.88 EER

> 7,000 and

< 15,000

10.0 − (0.00016 x Cap.) EER

≥ 15,000

7.6 EER

Packaged terminal heat pumps

Heating

Any

1.3 + [0.16 (10.0 – 0.00016 x Cap.)] COP

Cap. = cooling capacity (Btu/hr)

 

Table C-3 Standards for Air-Cooled Air Conditioners and Air-Source Heat Pumps Subject to EPAct
(Standards Effective January 1, 2010 do not apply To Single Package Vertical Air Conditioners)

Appliance

Cooling Capacity (Btu/hr)

System Type

Minimum Efficiency

Effective January 1, 1994¹ or January 1, 1995²

Effective June 15, 2008

Effective January 1, 2010

Air Conditioners

Heat Pumps

Air-cooled unitary air conditioners and heat pumps (cooling mode)

< 65,000 *

Split system

10.0 SEER¹

13.0 SEER

 

 

< 65,000 *

Single package

9.7 SEER¹

13.0 SEER

 

 

≥ 65,000 and

< 135,000

All

8.9 EER¹

 

11.2 EER³

11.0 EER4

11.0 EER³

10.8 EER4

≥ 135,000 and

< 240,000

 

All

8.5 EER²

 

11.0 EER³

10.8 EER4

10.6 EER³

10.4 EER4

≥ 240,000 and

< 760,000

All

 

 

10.0 EER³

9.8 EER4

9.5 EER³

9.3 EER4

Air-cooled unitary air-conditioning heat pumps (heating mode)

< 65,000 *

Split system

6.8 HSPF¹

7.7 HSPF

 

< 65,000 *

Single package

6.6 HSPF¹

7.7 HSPF

 

≥ 65,000 and

< 135,000

All

3.0 COP¹

 

3.3 COP

≥ 135,000 and

< 240,000

All

2.9 COP²

 

3.2 COP

≥ 240,000 and

< 760,000

All

 

 

3.2 COP

* Three phase models only.

³ Applies to equipment that has electric resistance heat or no heating.

4 Applies to equipment with all other heating-system types that are integrated into the unitary equipment.

 

Table C-4Standards for Evaporatively-Cooled Air Conditioners

Appliance

Cooling Capacity

(Btu per hour)

Minimum EER

Effective

October 29, 2003

Effective

October 29, 2004

Evaporatively-cooled air conditioners

< 65,000

12.1

12.1

≥ 65,000 and < 135,000

11.5¹

11.5¹

≥ 135,000 < 240,000

9.6

11.0

¹ Deduct 0.2 from the required EER for units with heating sections other than electric resistance heat.

 

 

Table C-6Standards for Single Package Vertical Air Conditioners and Single Package Vertical Heat PumpsManufactured on or After January 1, 2010

Appliance

Cooling Capacity (BTU/hr)

System Type

Minimum Efficiency

Cooling Mode

Heating Mode

Single package vertical air conditioners

< 65,000

Single-phase

9.0 EER

N/A

< 65,000

3-phase

9.0 EER

N/A

≥ 65,000 and < 135,000

All

8.9 EER

N/A

≥ 135,000 and < 240,000

All

8.6 EER

N/A

Single package vertical heat pumps

< 65,000

Single-phase

9.0 EER

3.0 COP

< 65,000

3-phase

9.0 EER

3.0 COP

≥ 65,000 and < 135,000

All

8.9 EER

3.0 COP

≥ 135,000 and < 240,000

All

8.6 EER

2.9 COP

 

 

 Table E-2  Standards for Gas Wall Furnaces, Floor Furnaces, and Room Heaters

Appliance

Design Type

Capacity

(Btu per hour)

Minimum

AFUE (%)

Wall furnace

Fan

≤ 42,000

73

Wall furnace

Fan

> 42,000

74

Wall furnace

Gravity

≤ 10,000

59

Wall furnace

Gravity

> 10,000  ≤ 12,000

60

Wall furnace

Gravity

> 12,000  ≤ 15,000

61

Wall furnace

Gravity

> 15,000  ≤ 19,000

62

Wall furnace

Gravity

> 19,000  ≤ 27,000

63

Wall furnace

Gravity

> 27,000  ≤ 46,000

64

Wall furnace

Gravity

> 46,000

65

Floor furnace

All

≤ 37,000

56

Floor furnace

All

> 37,000

57

Room heater

All

≤ 18,000

57

Room heater

All

> 18,000 and ≤ 20,000

58

Room heater

All

> 20,000 and ≤ 27,000

63

Room heater

All

> 27,000 and ≤ 46,000

64

Room heater

All

> 46,000

65

 

Table E-3Standards for Gas- and Oil-Fired Central Boilers and Electric Residential Boilers

Appliance

Rated Input (Btu/hr)

Minimum Efficiency (%)

AFUE

Combustion Efficiency at Maximum Rated Capacity Effective January 1, 1994

Effective January 1, 1992

Effective September 1, 2012

Gas steam boilers with single phase electrical supply

< 300,000

75

80 ¹

—

Gas hot water boilers with single phase electrical supply

< 300,000

80

82 ¹,²

—

Oil steam boilers with single phase electrical supply

< 300,000

—

82

—

Oil hot water boilers with single phase electrical supply

< 300,000

—

84 ²

—

Electric steam residential boilers

 

—

NONE

—

Electric hot water residential boilers

 

—

NONE ²

—

All other boilers with single phase electrical supply

< 300,000

80

—

—

Gas packaged boilers

≥ 300,000

—

—

80

Oil packaged boilers

≥ 300,000

—

—

83

¹ No constant burning pilot light design standard effective September 1, 2012.

² Automatic means for adjusting temperature design standard effective September 1, 2012.

 

Table F-3
Standards for Large Water Heaters Effective October 29, 2003

Appliance

Input to Volume Ratio

Size (Volume)

Minimum Thermal Efficiency (%)

Maximum Standby Loss¹,²

Gas storage water heaters

< 4,000 Btu/hr/gal

any

80

Q/800 + 110(Vr)1/2 Btu/hr

Gas instantaneous water heaters

≥ 4,000 Btu/hr/gal

< 10 gal

80

–

≥ 10 gal

80

Q/800 + 110(Vr)1/2 Btu/hr

Gas hot water supply boilers

≥ 4,000 Btu/hr/gal

< 10 gal

80

–

≥ 10 gal

80

Q/800 + 110(Vr)1/2 Btu/hr

Oil storage water heaters

< 4,000 Btu/hr/gal

any

78

Q/800 + 110(Vr)1/2 Btu/hr

Oil instantaneous water heaters

≥ 4,000 Btu/hr/gal

< 10 gal

80

–

≥ 10 gal

78

Q/800 + 110(Vr)1/2 Btu/hr

Oil hot water supply boilers

≥ 4,000 Btu/hr/gal

< 10 gal

80

–

≥ 10 gal

78

Q/800 + 110(Vr)1/2 Btu/hr

Electric storage water heaters

< 4,000 Btu/hr/gal

any

–

0.3 + 27/Vm %/hr

¹  Standby loss is based on a 70° F temperature difference between stored water and ambient requirements. In the standby loss equations, Vr is the rated volume in gallons, Vm is the measured volume in gallons, and Q is the nameplate input rate in Btu/hr.

²  Water heaters and hot water supply boilers having more than 140 gallons of storage capacity are not required to meet the standby loss requirement if the tank surface is thermally insulated to R-12.5, if a standing pilot light is not installed, and for gas- or oil-fired storage water heaters, there is a flue damper or fan-assisted combustion.

 

Table F-4
Standards for Small Federally-Regulated Water Heaters

Appliance

Minimum Energy Factor

Effective
April 15, 1991

Effective
January 20, 2004

Gas-fired storage-type water heaters

0.62 – (.0019 x V)

0.67 – (.0019 x V)

Oil-fired water heaters (storage and instantaneous)

0.59 – (.0019 x V)

0.59 – (.0019 x V)

Electric storage water heaters (excluding tabletop water heaters)

0.93 – (.00132 x V)

0.97 – (.00132 x V)

Electric tabletop water heaters

0.93 – (.00132 x V)

0.93 – (.00132 x V)

Gas-fired instantaneous water heaters

0.62 – (.0019 x V)

0.62 – (.0019 x V)

Electric instantaneous water heaters (excluding tabletop water heaters)

0.93 – (.00132 x V)

0.93 – (.00132 x V)

Heat pump water heaters

0.93 – (.00132 x V)

0.97 – (.00132 x V)

V = rated volume in gallons.