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ficiencies, and two energy factors for convertible cooking appliances—(i) an estimated annual operating cost, a cooking efficiency and an energy factor which represent values for those three measures of energy consumption for the operation of the appliance with natural gas; and (ii) an estimated annual operating cost, a cooking efficiency and an energy factor which represent values for those three measures of energy consumption for the operation of the appliance with LP-gas.

(6) The estimated annual operating cost for convertible cooking appliances which represents natural gas usage, as described in paragraph (i)(5)(i) of this section, shall be determined according to paragraph (i)(1) of this section using the total annual gas energy consumption for natural gas times the representative average unit cost for natural gas.

(7) The estimated annual operating cost for convertible cooking appliances which represents LP-gas usage, as described in paragraph (i)(5)(ii) of this section, shall be determined according to paragraph (i)(1) of this section using the representative average unit cost for propane times the total annual energy consumption of the test gas, either propane or natural gas.

(8) The cooking efficiency for convertible cooking appliances which represents natural gas usage, as described in paragraph (i)(5)(i) of this section, shall be determined according to paragraphs (i)(2) and (i)(3) of this section when the appliance is tested with natural gas.

(9) The cooking efficiency for convertible cooking appliances which represents LP-gas usage, as described in paragraph (i)(5)(ii) of this section, shall be determined according to paragraphs (i)(2) and (i)(3) of this section, when the appliance is tested with either natural gas or propane.

(10) The energy factor for convertible cooking appliances which represents natural gas usage, as described in paragraph (i)(5)(i) of this section, shall be determined according to paragraph (i)(4) of this section when the appliance is tested with natural gas.

(11) The energy factor for convertible cooking appliances which repre

sents LP-gas usage, as described paragraph (i)(5)(ii) of this sectio shall be determined according to par graph (i)(4) of this section when th appliance is tested with either natura gas or propane.

and

(12) Other useful measures energy consumption for conventiona ranges, conventional cooking tops conventional ovens, microwave oven microwave/conventional ranges shall be those measures of energy con sumption which the Secretary deter mines are likely to assist consumers in making purchasing decisions and which are derived from the application of Appendix I to this subpart.

(j) Clothes washers. (1) The estimated annual operating cost for automatic and semi-automatic clothes washers shall be

(i) When electrically heated water is used, the product of the following three factors: (A) The representative average-use cycle of 416 cycles per year, (B) the total per-cycle energy consumption for the normal cycle in kilowatt-hours per cycle determined according to 4.6 of Appendix J to this subpart, and (C) the representative average unit cost in dollars per kilowatthour as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year, and

(ii) When gas-heated or oil-heated water is used, the product of: the representative average-use cycle of 416 cycles per year and the sum of both (A) the product of the per-cycle machine electrical energy consumption for the normal cycle in kilowatt-hours per cycle, determined according to 4.4 of Appendix J to this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided by the Secretary and (B) the product of the per-cycle water energy consumption for gas-heated or oil-heated water for the normal cycle, in Btu per cycle, determined according to 4.5 of Appendix J to this subpart, and the representative average unit cost in dollars per Btu for oil or gas, as appropriate, as provided by the Secretary, the resulting product then being rounded off to the nearest dollar per year.

(2) The energy factor for automatic and semi-automatic clothes washers shall be the quotient of the cubic foot

capacity of the clothes container as determined in 3.1 of Appendix J to this subpart divided by the clothes washer energy consumption per cycle, expressed as the sum of the machine electrical energy consumption and the maximum normal water energy consumption as determined in 4.4 and 4.3, respectively, of Appendix J to this subpart. The resulting be rounded off to the nearest 0.01 cubic foot per kilowatt-hour.

(3) Other useful measures of energy consumption for automatic or semiautomatic clothes washers shall be those measures of energy consumption which the Secretary determines are likely to assist consumers in making purchasing decisions and which are derived from the application of Appendix J to this subpart.

(k) Humidifiers. (1) The estimated annual operating cost for central system humidifiers shall be

(i) Where heat is supplied by an electric furnace or electric resistance heating, the sum of: (A) The product of the average annual electric furnace or electric resistance heating energy consumption in kilowatt-hours per year, determined according to 4.1 of Appendix K1 of this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act plus (B) the product of the average annual supplementary electrical energy consumption in kilowatt-hours per year, determined according to 4.2 of Appendix K1 of this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting sum then being rounded off to the nearest dollar per year, and

(ii) Where heat is supplied by an electric heat pump, the sum of: (A) The product of the average annual electric heat pump energy consumption in kilowatt-hours per year, determined according to 4.3 of Appendix K1 of this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act plus (B) the product of the average annual supplementary electrical energy consumption in kilowatt-hours per year, determined according to 4.2 of Appendix K1

of this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting sum then being rounded off to the nearest dollar per year, and

(iii) Where heat is supplied by a gas or oil fired forced air furnace, the sum of: (A) The product of the average annual gas or oil furnace energy consumption in Btu's per year, determined according to 4.4 or 4.5, respectively, of Appendix K1 of this subpart, and the representative average unit cost in dollars per Btu for gas or oil, as appropriate, as provided pursuant to section 323(b)(2) of the Act plus (B) the product of the average annual supplementary electrical energy consumption in kilowatt-hours per year, determined according to 4.2 of Appendix K1 of this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act; the resulting sum then being rounded off to the nearest dollar per year.

(2) The estimated annual operating cost for room humidifiers shall be

(i) Where heat is supplied by an electric furnace or electric resistance heating, the sum of: (A) The product of the average annual electric furnace or electric resistance heating energy consumption in kilowatt-hours per year, determined according to 4.1 of Appendix K2 of this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act plus (B) the product of the average annual supplementary electrical energy consumption in kilowatt-hours per year, determined according to 4.2 of Appendix K2 of this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting sum then being rounded off to the nearest dollar per year, and

(ii) Where heat is supplied by an electric heat pump, the sum of: (A) The product of the average annual electric heat pump energy consumption in kilowatt-hours per year, determined according to 4.3 of Appendix K2 of this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to sec

tion 323(b)(2) of the Act, plus (B) the product of the average annual supplementary electrical energy consumption in kilowatt-hours per year, determined according to 4.2 of Appendix K2 of this subpart, and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting sum then being rounded off to the nearest dollar per year, and

(iii) Where heat is supplied by a gas or oil fired forced air furnace, gas or oil boiler, or unvented gas heater, the sum of: (A) The product of the average annual gas or oil furnace, gas or oil boiler, or unvented gas heater energy consumption in Btu's per year, determined according to 4.4 or 4.5, respectively, of Appendix K2 of this subpart, and the representative average unit cost in dollars per Btu for gas or oil, as appropriate, as provided pursuant to section 323(b)(2) of the Act plus (B) the product of the average annual supplementary electrical energy consumption in kilowatt-hours per year, determined according to 4.2 of Appendix K2 of this subpart and the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting sum then being rounded off to the nearest dollar per year.

(3) The estimated annual operating cost for humidifiers by geographic region shall be

(i) Where heat is supplied by an electric furnace or electric resistance heating, the product of: (A) The estimated annual operating cost determined according to paragraph (1)(1)(i) of this section for central system humidifiers, or paragraph (1)(2)(i) of this section for room humidifiers and (B) the regional factors for adjusting the humidity loads of the respective regions, determined according to 5 of Appendix K1 or K2 of this subpart, the resulting product then being rounded off to the nearest dollar per year;

(ii) Where heat is supplied by an electric heat pump, the product of: (A) The estimated annual operating cost determined according to paragraph (1)(1)(ii) of this section for central system humidifiers, or paragraph (1)(2)(ii) of this section or room humidifiers and (B) the regional factors

for adjusting the humidity loads of respective regions, determined according to 5 of Appendix K1 or K2 of his subpart, the resulting product then being rounded off to the nearest dollar per year; and

(iii) Where heat is supplied by a gas or oil fired forced air furnace, gas or oil boiler, or unvented gas heater, the product of: (A) The estimated annual operating cost determined according to paragraph (1)(1)(iii) of this section for central system humidifiers, or paragraph (1)(2)(iii) of this section for room humidifiers and (B) the regional factor for adjusting the humidity loads of the respective regions, determined according to 5 of Appendix K1 or K2 of this subpart, the resulting product then being rounded off to the nearest dollar per year.

(4) The energy factor for central system humidifiers shall be the quotient of: (i) The hourly rate of energy output of a central system humidifier, in Btu's per hour, as determined according to 4.9 of Appendix K1 of this subpart, divided by (ii) the sum of (A) the humidistat factor, in Btu's per hour, as determined according to 4.10 of Appendix K1 of this subpart; (B) the hourly rate of electrical energy input to the humidifier, in Btu's per hour, as determined according to 4.7 of Appendix K1 of this subpart; (C) the hourly rate of equivalent electrical energy input for bypass humidifiers, in Btu's per hour, as determined according to 4.8 of Appendix K1 of this subpart; and (D) the rate of waste water energy (q) in Btu's per hour, as determined in 4.1 of Appendix K1 of this subpart, the resulting quotient then being rounded off to the nearest 0.01.

(5) The energy factor for room humidifiers shall be the quotient of the humidification power of the humidifier, in kilowatts, determined according to 4.6 of Appendix K2 of this subpart divided by the sum of (A) the humidistat factor, in kilowatts, determined according to 4.7 of Appendix K2 of this subpart, and (B) the input power, in kilowatts, as determined according to 3.2 of Appendix K2 of this subpart, the resulting quotient then being rounded off to the nearest 0.01.

(6) Other useful measures of energy consumption for humidifiers shall be those measures of energy consumption for humidifiers which the Secretary of Energy determines are likely to assist consumers in making purchasing decisions and which are derived from the application of Appendices K1 and K2 of this subpart.

(1) Dehumidifiers. (1) The estimated annual operating cost for dehumidifiers shall be the product of the following three factors: (i) The representative average-use cycle of 1,300 hours per year, (ii) the hourly energy consumption in kilowatt-hours per hour, determined according to section 4.2 of Appendix L of this subpart, and (iii) the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting product then being rounded off to the nearest dollar per year.

(2) The estimated annual operating cost for dehumidifiers by region shall be the product of the following three factors: (i) The regional representative average-use cycle, determined according to section 5 of Appendix L of this subpart, (ii) the hourly energy consumption in kilowatt-hours per hour, determined according to section 4.2 of Appendix L of this subpart, and (iii) the representative average unit cost in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting product then being rounded off to the nearest dollar per year.

(3) The energy factor, E,, for dehumidifiers, expressed in pints of condensate collected per kWh, shall be the quotient of the weight of condensate collected, in pounds, as determined in American National Standard (ANS) B149.1-1972, divided by the product of the energy consumption, in kilowatt-hours, as determined in section 3.2 of Appendix L, and a conversion factor of 1.04 pounds per pint, the resulting quotient then being rounded off to the nearest 0.01 pints/kWh.

(4) Other useful measures of energy consumption for dehumidifiers shall be those measures of energy consumption for dehumidifiers which the Secretary of Energy determines are likely to assist consumers in making pur

chasing decisions and which are derived from the application of Appendix L or this subpart.

(m) Cental Air Conditioners. (1) The estimated annual operating cost for cooling-only units and air-source heat pumps shall be one of the following:

(i) For cooling-only units or the cooling portion of the estimated annual operating cost for air-source heat pumps which provide both heating and cooling, the product of: (A) The quotient of the cooling capacity, in Btu's per hour, determined from the steady-state wet-coil test (Test A) measured at the highest compressor speed, as described in section 3.1 of Appendix M to this subpart, divided by the seasonal energy efficiency ratio, in Btu's per watt-hour, determined from section 5.1 of Appendix M to this subpart; (B) the representative average use cycle for cooling of 1,000 hours per year; (C) a conversion factor of 0.001 kilowatt per watt; and (D) the representative average unit cost of electricity in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting product then being rounded off to the nearest dollar per year;

(ii) For air-source heat pumps which provide only heating or the heating portion of the estimated annual operating cost for air-source heat pumps which provide both heating and cooling, the product of: (A) The quotient of the standardized design heating requirement, in Btu's per hour, nearest to the capacity measured in the high temperature test, determined in sections 5.2 and 6.2.6 of Appendix M to this subpart, divided by the heating seasonal performance factor, in Btu's per watt-hour, calculated for heating region IV corresponding to the above mentioned standardized design heating requirement determined from section 5.2 of Appendix M to this subpart; (B) the representative average use cycle for heating of 2,080 hours per year; (C) the adjustment factor of 0.77 which serves to adjust the calculated design heating requirement and heating load hours to the actual load experienced by a heating system; (D) a conversion factor of 0.001 kilowatt per watt; and (E) the representative average unit cost of electricity in dollars

per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting product then being rounded off to the nearest dollar per year; or

(iii) For air-source heat pumps which provide both heating and cooling, the estimated annual operating cost is the sum of the quantity determined in paragraph (m)(1)(i) of this section added to the quantity determined in paragraph (m)(1)(ii) of this section.

(2) The estimated regional annual operating cost for cooling-only units and for air-source heat pumps shall be one of the following:

(i) For cooling-only units or the cooling portion of the estimated regional annual operating cost for air-source heat pumps which provide both heating and cooling, the product of: (A) The quotient of the cooling capacity, in Btu's per hour, determined from the steady-state wet-coil test (Test A) measured at the highest compressor speed, as described in section 3.1 of Appendix M to this subpart, divided by the seasonal energy efficiency ratio, in Btu's per watt-hour, determined from section 5.1 of Appendix M to this subpart; (B) the estimated number of regional cooling load hours per year determined from section 6.1.3 of Appendix M to this subpart; (C) a conversion factor of 0.001 kilowatts per watt; and (D) the representative average unit cost of electricity in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting product then being rounded off to the nearest dollar per year;

(ii) For air-source heat pumps which provide only heating or the heating portion of the estimated regional annual operating cost for air-source heat pumps which provide both heating and cooling, the product of: (A) The quotient of the standardized design heating requirement, in Btu's per hour, nearest to the capacity measured in the high temperature test (Test A), determined in sections 5.2 and 6.2.6 of Appendix M to this subpart, divided by the heating seasonal performance factor, in Btu's per watthour, calculated for the appropriate region of interest and corresponding to the above mentioned standardized

design heating requirement determined from section 5.2 of Appendix M to this subpart; (B) the estimated number of regional heating load hours per year determined from section 6.2.5 of Appendix M to this subpart; (C) the adjustment factor of 0.77 which serves to adjust the calculated design heating requirement and heating load hours to the actual load experienced by a heating system; (D) a conversion factor of 0.001 kilowatts per watt; and (E) the representative average unit cost of electricity in dollars per kilowatt-hour as provided pursuant to section 323(b)(2) of the Act, the resulting product then being rounded off to the nearest dollar per year; or

(iii) For air-source heat pumps which provide both heating and cooling, the estimated regional annual operating cost is the sum of the quantity determined in paragraph (m)(3)(i) of this section added to the quantity determined in paragraph (m)(3)(ii) of this section.

(3) The measure(s) of efficiency for cooling-only units and air-source heat pumps shall be one or more of the following:

(i) The seasonal energy efficiency ratio for cooling-only units and airsource heat pumps which provide cooling shall be the seasonal energy efficiency ratio, in Btu's per watt-hour, determined according to section 5.1 of Appendix M to this subpart, rounded off to the nearest 0.05.

(ii) The heating seasonal performance factors for air-source heat pumps shall be the heating seasonal performance factors, in Btu's per watt-hour, determined according to section 5.2 of Appendix M to this subpart for each applicable standardized design heating requirement within each climatic region, rounded off to the nearest 0.05.

(iii) The annual performance factors for air-source heat pumps which provide heating and cooling, shall be the annual performance factors, in Btu's per watt-hour, determined according to section 5.3 of Appendix M to this subpart for each standardized design heating requirement within each climatic region, rounded off to the nearest 0.05.

(4) Other useful measures of energy consumption for central air condition

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