5.4 Self-Contained Air Conditioners and Through-Wall Heat Pumps This part of the Energy Efficiency Manual explains how to improve the efficiency of self-contained air conditioning units and heat pumps. This part covers window air conditioners, packaged terminal air conditioners (“through the wall” units or “PTAC’s), and air-to-air heat pumps. Virtually all these cooling units operate on the principle of refrigerant compression. (Absorption cooling is rare and specialized in this size range.) The units include all their components in a single package. Outside air is used for condenser cooling. In the case of heat pumps, outside air is the heat source. The units typically are installed in an opening in the building envelope. They often include heating coils, which are usually electric resistance elements. The energy conservation measures explained here include the maintenance needed to maintain efficiency, avoiding air leakage or infiltration around the units, more efficient ventilation, replacement with high-efficiency fan motors, and selection of the most efficient units.

Efficiency ratings are explained, including EER, SEER, and HSPF. Important Note: AC wiring and low voltage A/V cable must not be installed in the same electrical box. Use of these wall plates requires use of a Power/Low Voltage Combo Box, such as our 28-10670 or 28-10675.best rated window ac units Plates are available in four colors.ac and heater will not turn on Midlite Products Part #:DR2G-GR10-Wac unit not cooling house down Package Specifications & Dimensions Warranty:365 daysNeed to Return? Datasheet for Double Gang Cable Pass Through Wall Plate with Dual Outlet Cover - White Requires Adobe Acrobat Reader 28-10670 - Old Work Low Voltage Combo-Box Non metallic boxes are ideal in applications where AC and low voltage devices are to be located together.

Perfect in situations were A/V or data connections need to be located with an AC outlet, or when wall switches and in-wall volume controls are to be locat... 28-10675 - New Construction Low Voltage Combo-Box 28-11096 - White Decor Style Recessed Inlet Use MIDLITE’s® innovative patent pending Decor Style Recessed Inlet 125V, 15 amp to install power behind your flat panel TV and audio and video devices. 28-19336 - 5.25VDC 2.4A Regulated AC Power Adapter - 48" Cord with Micro USB Plug 5.25V 2.4A Regulated Micro USB Power Adapter This compact USB AC charger is UL and CSA listed and incorporates a highly regulated output switching power design to assure a constant, accurate DC power delivery to your sensitive portable 5V devices.Take Advantage of Great Prices On Our Heat Registers Whether you are looking for heating vent covers, heat registers or air vents, Atlanta Supply is the place to come. We carry all types of products for any opening size, with various finishes, materials and styles.

Our enormous inventory will allow to find the heating vent covers or other items that fit your décor and provide the efficiency and safety your application requires. Look around our site to pinpoint the air vents you need, then place your order directly online.Contact us at 1-800-972-5391 if you have additional questions. To view/shop our products click on appropriate link below: Standard Supply Registers - Stocked in both white and brown finish, all of these will include the damper control. Pictured to the left is a two-way pattern but this is also stocked in a three-way air pattern. Many sizes are available. Returns - These are stocked in sizes ranging from 6x4 to 36x36. They are available as filter grilles as well. Use for any wall or ceiling applications. Available in white, brown, and aluminum finish. Brass Registers - After selling Brass for 20 years, we now stock a register that has awesome quality and is still affordable. We stock polished brass, antique brass, and chrome finishes in both supplies and returns.

All are solid brass. Cast Iron Grilles - These are quite possibly the best crafted grilles in the world. Cast out iron in the USA, these vents are basically hand made. They are actually heavy as well as heavy duty and will last a lifetime. Plastic - Use these models where rust or cleaning agents are an issue. Even though they are plastic, they are as strong as steel and have one of the best damper mechanisms on the market. They are available in white finish. Round -For use in ceilings, we have these in several styles in sizes from 4” to 18” duct diameter. These can be used in sheet rock, lay in t-bar, or exposed ductwork. Optional dampers are stocked. Available in white and aluminum finish. Wood -All of our wood products are of the highest quality. We have supplies, returns, and filter grilles. If you do not see what you want, please call. We have almost unlimited options on wood. Toe Kicks -For use under cabinets, under stairs, or other narrow places. For custom dimensions or hard to solve situations, please call.

Curved Blade Registers - Use these models in ceiling or high sidewall applications. They are stocked in six different air patterns in both steel and aluminum and available in fixed or adjustable blades. White and aluminum finish. Door Grilles -For use in doors to provide return air or combustion air. Our door grilles are two piece construction and vision proof. We also stock a fire rated door grille for use in fire rated doors. We can custom order light proof grilles for use in dark rooms. Commercial Returns -These are available in both return and filter grille styles. They feature aluminum construction and are available in both aluminum and white finish. While designed for commercial applications, the new trend is using these in residential construction where a contemporary look is desired. Commercial Supplies -Styles are available for both wall and ceiling. Custom sizes are available by special order. These are also specified for commercial use but we are seeing more and more people use them in homes where the need is for a higher quality grille or a contemporary look.