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  Ask Phil: What is a heat pump, and how does it work?

  Tags: air-source heat pumps, Energy efficient, ground-source heat pumps, rebates, water-source heat pumps
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  Ask Phil: Is it Worth Buying a High-Efficiency Furnace?

  Tags: Energy efficient, environmentally friendly, indoor air quality, save money, thermostat compatibility
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  Ask Phil: Can You Use Ductless Mini-Splits in a Commercial Space?

  Tags: Commercial HVAC, ductless mini split, Energy efficient, indoor air quality
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  Ask Phil: How to Make My Furnace More Energy Efficient?

  Tags: Energy efficient, furnace, hvac, maintenance, thermostat