Source Control: Eliminate or control the sources of pollution; Ventilation: Dilute and exhaust pollutants through outdoor air ventilation, and Air Cleaning: Remove pollutants through proven… Read More
High-velocity, small-diameter HVAC duct systems that can be easily installed. Summary Many owners of older homes without forced-air HVAC systems, would like to add central… Read More
When selecting and installing a geothermal heat pump, consider the heating and cooling efficiency, the economics of the system, and your site’s characteristics. Be sure… Read More
There are four basic types of ground loop systems. Three of these — horizontal, vertical, and pond/lake — are closed-loop systems. The fourth type of… Read More
Geothermal heat pumps (GHPs), sometimes referred to as GeoExchange, earth-coupled, ground-source, or water-source heat pumps, have been in use since the late 1940s. They use… Read More
Electric air-source heat pumps, often used in moderate climates, use the difference between outdoor air temperatures and indoor air temperatures to cool and heat your… Read More
A heat pump can save as much as 30% to 40% of the electricity you use for heating. Why Buy an Energy-Efficient Heat Pump? If… Read More
Several relatively new innovations are improving the performance of heat pumps. Unlike standard compressors that can only operate at full capacity, two-speed compressors allow heat… Read More
Heat pumps and energy-saving This section gives a brief introduction to heat pumps. Based on six basic facts about heat supply the value of heat… Read More
Heating Tips Set your thermostat as low as it is comfortable. Clean or replace filters on furnaces once a month. Clean warm-air registers, baseboard heaters,… Read More
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