Heating and Cooling

Are Packaged Terminal Air Conditioners (PTACs) and Packaged Terminal Heat Pumps (PTHPs) ENERGY STAR qualified?
Are there ENERGY STAR labeled dehumidifiers?
Are there ENERGY STAR qualified space heaters?
Are there ENERGY STAR qualified portable room air conditioners?
Are there ENERGY STAR qualified ductless split-system air conditioners (mini splits)?
Can I figure out the right size of HVAC equipment needed for my home myself, or do I really need a contractor?
Can geothermal heat pumps earn the ENERGY STAR?
Can heat recovery ventilators earn the ENERGY STAR?
Can I add new insulation on top of old insulation?
Do ENERGY STAR qualified furnaces save on your electricity bills as well gas/oil/propane?
Does changing my furnace or air conditioning filter each month save energy?
Do I get a bigger HVAC system to be comfortable and save energy?
Does it help to close vents in rooms not being used during the day?
How efficient are ENERGY STAR qualified boilers?
How do I know if I need a new heating and cooling (HVAC) system?
How much should I put back my heat or air conditioning while I?m gone during the day?
I?ve heard setting a programmable thermostat back during the day does not save on energy costs because you use at least as much energy as you?ve saved getting your house back up to the desired temperature. Is this true?
How hard is it to install a programmable thermostat? Can I do it myself?
How should I use my ceiling fan?
What is a radiant barrier? Can it earn the ENERGY STAR?
Should I cover my outdoor AC condenser unit in the winter?
Is there an ENERGY STAR label for evaporative coolers? Are they eligible for a tax credit?
Is there an ENERGY STAR label for ?whole-house? fans?
What temperature should I set my air conditioner during the summer (or my heat during the winter)?
What is SEER? EER? HSPF?
What should I expect from my contractor doing heating and cooling system maintenance?
What's the difference between a split system and a packaged unit?
Why is the ENERGY STAR Geothermal Heat Pump I just bought in late 2010 not listed as a qualified product?