http://h-mac.com/blog Helpful HVAC Product Information, Tips, and Suggestions Mon, 28 Jul 2008 19:30:03 +0000 http://backend.userland.com/rss092 en WASTE OIL HEATERS – BEAT HIGH FUEL COSTS THIS WINTER! Waste oil heaters and waste oil boilers produce nearly “free” heat while also eliminating the burden of recycling used oil. It gets even better; some states offer tax incentives to heat your facility with waste oil heaters and waste oil boilers! ... http://h-mac.com/blog/2008/07/28/waste-oil-heaters-beat-high-fuel-costs-this-winter/ Warming your garage or workshop can be conveniently accomplished using an electric heater. A fan forced electric space heater is inexpensive to buy, easy to operate, maintenance free, and able to heat areas where other heating solutions might be difficult to install, expensive, or impractical. Operating Principle An electric ... http://h-mac.com/blog/2008/07/21/fan-forced-electric-space-heaters-for-your-garage-or-workshop/ HVAC Coil manufacturers can over emphasize the need to designate left or right hand. The different reference points used can be intimidating and confusing. Often times, it just doesn’t matter. Do you need to specify a left or right handed steam HVAC coil? Not generally. Most steam HVAC coils are ... http://h-mac.com/blog/2008/07/15/do-i-need-a-right-hand-or-left-hand-hvac-coil/ 1. If you eliminated the fins and only used the tubes, you would only get about 30% of the performance compared to the same HVAC coils with fins. The fins impact heat transfer much more than the tubes. 2. Because steam is erosive, steam coils are often constructed differently then hot water coils. ... http://h-mac.com/blog/2008/07/08/replacing-hvac-coils-10-fast-facts/ Space cooling can be conveniently and economically accomplished using an electric evaporative cooler (sometimes called a swamp cooler or desert cooler). Compared to a compressorized air conditioner, an evaporative cooler is inexpensive to buy, inexpensive to run, easy to operate, low maintenance, and able to cool areas where other cooling ... http://h-mac.com/blog/2008/07/02/evaporative-cooler-ezine-article/ For people who live in fairly arid climates, swamp coolers (a.k.a. evaporative coolers) are an efficient way to stay cool – and are less expensive top purchase and operate than air conditioners. Dry air absorbs moisture through evaporation. If water is continuously evaporated into dry air, heat is absorbed ... http://h-mac.com/blog/2008/06/24/how-to-use-a-swamp-cooler-to-cool-your-home/ 1. Insulate – Insulation reduces the amount of heat that enters your home from outside. In a well insulated house, less energy is consumed battling heat conducted in from the outside through walls and ceilings. 2. Seal up air leaks – A tightly sealed home reduces the amount of warm air that ... http://h-mac.com/blog/2008/06/17/10-energy-saving-hvac-tips-for-summer/ Ceiling fans are aesthetically pleasing, useful and energy efficient. While most people know that fans can provide a cool breeze in the summer, many don’t realize that a fan can also be used to force warm air down from the ceiling in the winter. Light kits can even be added ... http://h-mac.com/blog/2008/06/16/ceiling-fans-how-to-choose-and-install/ Solar Attic Fan Easily installed and free to operate, solar attic fans are a smart choice for homeowners who want to save money cooling their homes in summer, prevent ice dams in winter, and extend the lives of their roofs. Solar Attic Fan Operating Principle A solar attic fan uses photovoltaic panels ... http://h-mac.com/blog/2008/06/10/solar-attic-fan/ How to Maintain a Window Air Conditioner A window unit, commonly called a window air conditioner, is great for cooling a single room or a group of rooms that do not have partition walls. A window air conditioner consists of a blower, fan, compressor, evaporator coil, condenser coil, thermostat and filter. A ... http://h-mac.com/blog/2008/06/05/how-to-maintain-a-window-air-conditioner/