US/Canada/Mexico/CarribeanAustralia/SE Asia/JapanSouth AmericaEurope/Middle East/AfricaChina Welcome to the Hoffman cooling selection tool. Enter the requirements of your application. The software will suggest standard cooling solutions such as air conditioners, heat exchangers, and air movers. If you need a custom solution such as custom paint option, increased air flow, or unique dimensions, please contact your sales representative. Select Units of Measurement Total Surface Area: Surface Area available for Heat Transfer: Enclosure Surfaces Not Allowing Heat Transfer Max temp outside the enclosure: Max desired temp inside the enclosure: Min anticipated temp outside the enclosure Min allowable temp inside the enclosure Heat Load Calculator Options Temperature Inside and Outside Enclosure Component Voltage and Amps Internal Heat Load in Watts Enter heat load here or use one of the heat load calculator options to the right for assistance.

Enclosure Insulation R Value R0 = 0.0inR2 = 0.5inR4 = 1.0inR6 = 1.5inR8 = 2.0inR12 = 3.0in Closed Loop/Sealed SystemFresh Air/Vented System (Open Loop) Type 12/IP54Type 12/IP55Type 3R/IP55Type 4/IP55Type 4x/IP55Type 1/IP10UL Class 1 Div 2 115 volt AC 50/60 hz230 volt AC 50/60 hz460 volt 50/60 hz24 volt DC48 volt DCOther Industrial filter fanOutdoor direct air cooling (DACS)19" data rack fan tray/blowerBare/loose air mover Type 12/IP54 filterIP55/Merv12/Z-filterDense/hydrophobic filterNo filter System Air Flow Impedance Heat ExchangerAir ConditionerVortex Cooler To help ensure proper model selection, please check the performance curves provided on the website to confirm that it provides the required cooling capacity for your application No exact matches found, please verify all settings. There is a possibility that multiple units may be required. Contact Customer Service at 1-800-896-2665 for more information. Estimate Heat Load using Temperature

Internal heat load can be deteremined by measuring the difference in temperatrues between the inside and outside of the sealed enclosure with no fans running and all components operating at full power. It is imperative that no ambient air is allowed to pass through the inside of the enclosure. Temp outside enclosure 1 meter/yard from panel: Temp inside enclosure near top: Estimate Heat Load Using Voltage and Amps Watts of heat load can be determined using the voltage, amps and efficiency of main components in the enclosure. If efficiency is unknown, enter 0%. Estimate Heat Load using Industrial Automation Components Watts of heat load can be determined from popular industrial automation components. enter below key components inside the cnclosure. Model assumes 97% efficiency for VFD and 95% efficiency for servo drive and transformer. Variable Frequency Drive (VFD) A Variable Frequency Drive (VFD) B Show All Tabs | Input Test Data |

Ignore Features Filter Products | Following air conditioning sizing recommendations saves homeowners money. Without proper guidance from a home heating and cooling professional, many people will spend extra money buying air conditioners that are too large for the space. By buying the proper size of air conditioner, homeowners save money in the short-term, with a smaller cash outlay for a unit that is not too large for the space. Long-term operating costs go down with smaller, more efficient units as well.how does hvac furnace work Air conditioning sizing does not follow the “bigger is better” adage. cost of heating cooling unitIn fact, an air conditioner that is too large for a room won’t cool the area uniformly. how fix ac unitAdditionally, a smaller unit that stays on continuously to create a consistent temperature in the room operates more efficiently than a large unit that turns on and off frequently.

A unit that continues operating for longer periods of time at a lower level also dehumidifies the area more efficiently. Removing humidity from the air makes a room feel even cooler. Experts provide guidelines and recommendations for the size of air conditioning unit that is appropriate for any home. If you’re unsure about the size of air conditioner that your space requires, ask a professional contractor or salesman before you buy. The heating and cooling industry rates air conditioners’ cooling capacities based on British thermal units (BTU) per hour, or by the “ton,” which is 12,000 BTU per hour. Most room air conditioners have cooling capacities ranging from 5,500 BTU to 14,000 BTU. Depending on how hot your local climate gets in the summertime, a 5,000 BTU air conditioner will cool a room of 100 to 150 square feet. Here are some additional points to consider: These numbers apply to room air conditioners. Check with a professional installer to decide the appropriate size of central air conditioner for your home.

Keep in mind that passive cooling techniques, including proper insulation, shaded windows, and even heat-reflective coatings on your windows will help reduce your air conditioner sizing requirementsIf you took a minute to step outside your house in Charlotte this week, you know it’s here… With temps floating into the 90’s for the 8th straight day, you can rest assured that Charlotte air conditioner repair companies are running full steam ahead to keep their customers cool during the heat spell. In a previous article, we discussed the cost to recharge a home air conditioner or heat pump on your Charlotte area central HVAC system, and in this Charlotte HVAC Guide, we are going to look at how many pounds of freon or refrigerant a system can hold. The general rule amount that can be estimated is in the 2-4 pounds per ton of cooling for your system. Disclaimer: This rule of thumb is VERY general and there are several variables that come into play. My Carrier 3-ton system may use 4-5 pounds, while your Goodman heat pump may use 5-6.

The ONLY way to know for sure is to read the label on the side of the unit, and have your installer or service company provide the info for you. As always, we recommend comparison shopping for installation and repairs as often as you can. Just like any other factor in pricing, you may find that 3 Charlotte AC repair contractors have 3 completely different prices for the same product or service. Take a look at the important variables that can affect how many pounds of freon your AC or Heat Pump may need. Probably one of the biggest factors, the size of your home AC or heat pump is going to have a significant effect on the amount of freon it uses on its own, but it will also have a downwind effect on several of the other factors listed below. For example, a larger condensing unit, needs a larger liquid line on the lineset… which also means more capacity. Length and Size of Copper Lineset The farther distance between the condensing unit and the evaporator coil, means a longer lineset is used to connect the two.

Most AC units come from the factory with enough of a charge for the unit, and 15 feet of lineset. Longer distances require additional freon. Larger capacity units also use a larger diameter tubing on the lineset, which will require more freon. SEER Rating, or Operating Efficiency If you have seen a 10 SEER system, you know they are roughly 20-30 inches tall with a 24 inch base. Essentially, a nice, small footprint. A comparable 15 SEER condensing unit may be 4 feet tall, with a 36 inch base, and be 2-3 times the size of the lower efficiency unit. This is due to all the extra coil surface required to generate the higher efficiency cooling, and thus… more freon is needed to fully charge the coil. It’s common to use a larger evaporator coil with an AC unit. In most cases, it can provide higher efficiency due to the larger coil area. Along with the added coil surface, you may need additional freon capacity to fill it. A split system, where the condensing unit is outside and the air handler, furnace and coil are inside (aka Split) is going to have to accommodate for different coils, linesets, and several other factors that were determined by the installer when the unit was first put into use.