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  2. How Much Does It Cost To Build a House? - AOL

    www.aol.com/much-does-cost-build-house-210010797...

    Electrician rate: $50 to $100 per hour. General contractor cost: 10% to 20% of the total project cost. House framer rate: $7 to $16 per square foot. Interior designer rate: $50 to $200 per hour ...

  3. Renewable heat - Wikipedia

    en.wikipedia.org/wiki/Renewable_heat

    The 4,000-square-foot (370 m 2) home cost $125 per square foot (or 370 m 2 at $1,351/m 2), similar to the cost of a traditional new home. Active solar heating uses pumps to move air or a liquid from the solar collector into the building or storage area.

  4. Dedicated outdoor air system - Wikipedia

    en.wikipedia.org/wiki/Dedicated_outdoor_air_system

    For example, a space requiring 5663 standard litre per minute (SLPM) (200 standard cubic feet per minute (SCFM)) of ventilation air and served with supply air that is 40% ventilation air, will require a box minimum setting of 14158 SLPM (500 SCFM) (i.e. 200/0.4) rather than the conventional practice of 5663 SLPM (200 SCFM). When the box ...

  5. Seasonal energy efficiency ratio - Wikipedia

    en.wikipedia.org/wiki/Seasonal_energy_efficiency...

    The unit is operated 120 days each year for 8 hours per day (960 hours per year), and the electric energy cost is $0.10 per kilowatt-hour. What is its annual cost of operation in terms of electric energy? First, we convert tons of cooling to BTU/h: (4 tons) × (12,000 (BTU/h)/ton) = 48,000 BTU/h. The annual cost of the electric energy is:

  6. Winter Heating: How To Choose the Best System for Your ... - AOL

    www.aol.com/finance/winter-heating-choose-best...

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  7. Cooling load temperature difference calculation method

    en.wikipedia.org/wiki/Cooling_load_temperature...

    The first of the cooling load factors used in this method is the CLTD, or the Cooling Load Temperature Difference. This factor is used to represent the temperature difference between indoor and outdoor air with the inclusion of the heating effects of solar radiation. [1] [5] The second factor is the CLF, or the cooling load factor.

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