The thing to know is that there are 3 components to your typical residential furnace/AC system and you can mix-and-match to a limited extent. Many of the newer AC units have “communicating” controls that require both a compatible furnace and a special thermostat for communication between system components and for blower control. If 12,000 BTU's is 1 ton, and my AC is a 2 ton, should the furnace be 24,000 BTU's too? It's very important in air conditioning to have the right amount of airflow—either too much or too little can cause problems. The "tonnage" of the cooling coil (evaporator coil) must match the airflow of the furnace blower. Heating & Air Conditioning. Trane furnaces are uniquely designed to provide maximum heat with minimum fuel usage. Hey all, I am looking to install a central ac unit, I already have forced air heat in the house with duck work already in place. 1. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. An insufficient return system or one too large will reduce the efficiency of the heating and increase energy bills. I just had installed a Carrier 58MVC80-14 furnace with a 24ANB630 A/C and a CNPVU3617ACA indoor coil instead of the matching CNPVU36121ACA indoor coil for the furnace. Much like MPGs on your car. Does a 3 ton coil match up with a 2 ton condenser unit [ 19 Answers ]. Are You Selling? Sounds like you have a 4-ton unit, which is quite large for a single residence. Make Sure the Filter is Clean. If you are buying a high-efficiency air conditioner with SEER above 16. In fact, that may be the case even if your furnace is only 10 or 12 years old. Likewise, your furnace could be fine but you want a new AC system without being limited to using the same brand as your furnace. If you’re thinking about installing a standard, or conventional, air conditioner, then pairing with your existing furnace likely won’t be an issue. Advantages And Disadvantages Of A Ductless HVAC System, Consumer Guide: How to Understand the SEER Rating. Most of the time this is not a problem but sometimes in hot climates a larger than necessary furnace is required to get a large enough blower. When the AC is operating in low speed, the furnace must be able to automatically shift to a corresponding airflow—and that’s where appropriate communication between AC and furnace is critical. Many times a TXV will be needed to get the rated SEER, but not any certain furnace brand, other than one that will supply the cfm needed for the rating. If so, it’s wise to think ahead and ask what adding or upgrading means in terms of compatibility with your current furnace. Your thermostat, however, is one of the most important parts of your HVAC system, and by far the component that you have the most face time with. Because the communication between components is so important if you’re installing staged or variable speed/modulating AC, it’s usually best to have both your furnace and AC manufactured by the same company—a Carrier furnace and a Carrier AC, for example. A furnace is designed to heat your home’s air using different types of fuel. Are you thinking about adding a central air conditioner to your home? These two parts are specifically designed to work together as a coordinated “team” to provide top performance and maximum efficiency As part of our quotation process, McCullough Heating & Air will calculate the heating & cooling load for your home to determine the proper size of equipment, ductwork, flue, electrical, etc. and over 2 1/2 feet high for a 12,13 or 14 S.E.E.R. What's a MERV Rating and How Does It Affect My HVAC System. But do the air handler and condenser have to match? DC furnaces are more expensive to purchase. Your best bet is to contact your local HVAC pro and schedule an appointment to discuss the options you have and what will best fit your needs and budget. The furnace … Or should it be more? hbspt.cta._relativeUrls=true;hbspt.cta.load(343878, '79d62296-119c-48ec-927a-7d9f75654686', {}); Which Central Air Conditioner Pairs Well With My Current Furnace? Although it’s possible to mix and match the systems, it’s not recommended, especially if the furnace is over 15 years old. 2. For example, if you have a new condensing unit put in, but don’t have the indoor coil updated, you won’t get the maximum cooling energy efficiency. 11 years ago. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. 2. My ac and Furnace run at the same time. So I got proposals for a 13 SEER (still allowed here in Indiana) 3 ton AC to match the oversized fan on the furnace, or 16 SEER 2.5 tons that they said would just work longer but cool more steady. Measurements of HVAC cooling efficiency is rated in SEER and EER. For instance, an AC furnace will be about $3,000,000 cheaper than a DC furnace, but the DC furnace saves money in the long run. A furnace return system must collect all the air being put out by that system. What is the recommended air flow rate for air conditioning systems? However, based on the information given, replacing your furnace and air conditioner at the same time is smart and cost-effective. Another way to prevent getting this page in the future is to use Privacy Pass. Why your furnace and air conditioner are a needed pair. Using different brands of units — often called a “mismatched system” — usually has no major short-term consequences as long as the coils, blower and wiring used are compatible and properly sized. You’ll want to confirm that the indoor coil will fit in the space above your furnace and that the furnace has enough blower power for the AC—that is, that it can move enough air with enough pressure for effective cooling. But that may not be the only reason to consider replacement. • Advanced Heating & Cooling. I have been hearing different things for installation of ac. Sometimes you just have to replace the air handler or condenser part of your heating and air conditioning system without replacing the whole thing. The AC unit is a 2 ton system, but I'm having trouble matching up the BTU's. In most cases, your control wiring should not be an issue, but is definitely something to check out. Sounds like you have a 4-ton unit, which is quite large for a single residence. In a way your Air Conditioner and furnace is like a mated pair — separate units that are combined together and share many of the same system. If you’re considering staged or variable speed/modulating AC, there are additional considerations in regard to pairing equipment. Air duct return air and air flow improvement: How to increase air conditioning or heating return air flow to improve system performance Return air adequacy on heating and air conditioning duct systems. These numbers will be different for your indoor and outdoor unit. I have an older furnace and central air unit. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Let’s start with the basics and work our way to the more complex. It blows hot air through ducts to deliver warm air via grills or air registers. And they told me that my furnace is sized for a 5 ton AC. For example, a Carrier Infinity series AC must be paired with a Carrier Infinity or Performance furnace—it will not work with a Carrier Comfort series furnace. In some cases—usually higher end, higher efficiency systems—it may even be necessary to pair specific products within the same brand. Furnaces and thermostats are not mix-and-match components. If the furnace is putting out 1,000 cubic feet per minute of air flow, the return system must collect 1,000 cubic feet and take it back to the unit. It’s logical for homeowners to wonder if it isn’t worth it to replace their furnace at the same time as they’re installing or replacing their air conditioning. Or maybe you’re ready to upgrade your current central air? If you want to upgrade to staging or modulating AC, then you may have to replace your furnace for the communication reasons noted above. What does a furnace do? The answer can depend on a number of factors. Most of your heating and air conditioning system components are tucked away out of view, and you have little interaction with them. Below are a few tips for selecting matching components and line sets your system: 1) When purchasing an air conditioner or heat pump, it is critical that it be matched with an Therefore there must be sufficient height in the basement, as this coil is about 2 feet high for a 10 S.E.E.R. To deliver the highest system efficiency, performance and climate control, an indoor cooling coil must be matched in size and rated with your air conditioner. Air Conditioning and Heating equipment manufacturers have figured out that by matching a 14.5 SEER condenser with complimentary products a 16 SEER AHRI rated system can be created. Further to this explanation, in an ideal HVAC unit the two sets of coils are designed to match one another. • This will assure that the furnace will be able to match the airflow needs of the air conditioner. The higher these number the better. Matched in capacity and efficiency rating with the air conditioner, air handlers circulate conditioned air throughout your home. For an air conditioning or heat pump system to provide proper comfort, efficiency and operation, it is very important for all the components to be matched and sized properly. As far as I know, all AHRI rated air conditioners come with a "match" for just the AC and indoor coil regardless of the furnace used. Use a Trane coil with your Trane system for optimum reliability. Cloudflare Ray ID: 615a2d9fcc932e5e by admin . Uncategorized. How to Check or Detect Air Flow at the Return Register Inlets. Video Script: "Can a heat pump be replaced without having to replace the air handler?" An air conditioner and furnace from different brands can usually work together. If your heating and air conditioning are installed at the same time, the coil cabinet (part of the air conditioner that sits on top of the furnace) will match the furnace in color & style. The Importance of Matching Your Air Conditioner Coils . There are several types of heating systems and thermostat systems, and they must be compatible … Heating: Room Temperature Does Not Match Thermostat Setting. Performance & security by Cloudflare, Please complete the security check to access. In the case of an upflow ( vertical ) furnace, the coil will sit on top of the furnace. Or, if you don’t have access to these numbers, you up your system by manufacturer name, model name, and model number. It will save you money in the future by lowering your energy bills, reducing repairs, and minimizing installation costs. Look, there are definitely contractors out there who lack the ability to properly match a furnace and air conditioning system, but let’s, for a moment, forget these contractors, and assume that you are dealing with a reputable contractor that knows what he/she is doing. An air handler contains an inside coil and a blower fan, with the additional possibility of an auxiliary electric strip heater. Where the Furnace & Air Conditioner Replacement Myth Began. I have a furnace in the basement. So separating them can cause problems. When to replace air conditioner and furnace at the same time: If your furnace is over 15 years old. This is most often done by matching the condenser with a variable speed furnace AND a horiz… Not necessarily. First, ask your installer for an AHRI (Air Conditioning, Heating, and Refrigeration Institute) reference number or AHRI Certificate of Certified Product Performance. The furnace … 1. 27 Jul . If only the air conditioner needs replacing, for example, are you limited to purchasing the same manufacturer so that both systems match? The AC is 2.5 tons. Normally, the investment for a new central heating and air … In fact, it may be critical to match the AC to the furnace. Furnaces are also known as a forced warm-air or ducted warm-air distribution system, and they heat a home using one of these sources: Electricity; Fuel oil; Natural gas Unlike AC furnaces, it doesn't require burners, which cost about $500,000 each, and the overall energy consumption is less, so utility costs are lower. The evaporator coil should be ideally sized to soak up the same amount of heat that the condenser coils are able to dump into the air outdoors. The mated pair have parts that fit together in an efficient way. You may need to download version 2.0 now from the Chrome Web Store. The purpose of the furnace filter is to prevent dust and hair from … The installer said it was matched because even though the indoor coil size is 17" instead of 21" the indoor coil tonnage is 1/2 ton larger than the outdoor A/C unit. A Perfect Match Replacing your Central Air Conditioning or Heat Pump System Split air conditioning and heat pump systems typically consist of two parts: an indoor (coil) unit and an outdoor (condensing) unit. 2. An evaporator coil must be added to the furnace. This will assure that the furnace will be able to match the airflow needs of the air conditioner. The condenser that sits outside. Your IP: 103.120.177.86 For any air conditioning system to give you its rated efficiency and performance, both the outside air conditioning condensing unit and the indoor cooling coil must be matched. Your local HVAC pro can help you address the details. If your furnace is over 14 years old, you can gain significant efficiency with a new unit. However, the air conditioner and the furnace probably won’t need to be replaced at the same time. Air conditioning systems have to be built tough in order to withstand the punishing demands of cooling your home during the hot months of summer. But there are a few things to consider. Trane air handlers are available with single- … We have an old setup in our home (old Consolidated Ind. The answer is yes, but with some caveats. SEER stands for Seasonal Energy Efficiency Rating and EER for Energy Efficiency Ratio. Yet, even the strongest systems will accumulate wear and tear as the years go on. I have replaced my thermostat earlier this spring. The thing to know is that there are 3 components to your typical residential furnace/AC system and you can mix-and-match to a limited extent. Is this true? dysfunktion. Please enable Cookies and reload the page. furnace) and the furnace needs to be replaced. The condenser that sits outside. Replacing an air conditioner and a furnace at the same time is going to be expensive. The central air has worked without any probelms all summer. 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