![]() What Size Generator do I Need for a 13500 BTU Air Conditioner? It is something to consider to keep your cool, everything costs money and the upgrade to a higher wattage output generator is going to set you back some. If you have a smaller generator that puts out 2000 watts or less, you will have to spend more money and upgrade your generator at the same time. The extra power will make sure you stay really cool on those hot days but it is a little like over-kill in smaller RVs and trailers.Įven a 40 by 10 foot Class A unit does not need a large AC unit as that is only 400 square feet and the 13,500 BTU unit is rated for larger spaces than that. Then you really should assess the idea of using a 13,500 BTU AC unit as most RVs and trailers are not large enough. That means that even an 11 amp AC unit will need more starting power than a 2000 watt generator can produce just to start working. The start-up process uses about double the amps and watts that the running time uses. Will a 2000 Watt Generator Run a 13500 BTU Air Conditioner?įor the running time it may be enough to handle the load but not for the startup. ![]() You may have a nice unit to keep you and your family cool, but it may draw too much power and you won't be able to use it when you want to cook, take a shower or even run your fridge. Their power draws often overload the circuit and trip breakers. One of the things that people forget about when they go shopping for a new AC unit is that they have other appliances that need electricity. When looking at the specs and they say the unit uses 1200 watts, you will need at least 1500 to power it. Your 2000 watt generator may be enough to handle the running time but you will need at least a 3000-watt generator to handle the start-up. It is the start-up that is going to get to you if your generator is not large enough to handle the start-up power needed. The amount of wattage may be a bit different between models but on average you are looking at using around 2500 to 2750 watts on start-up and about 1200 to 1300 watts for running time. A quick search provides that information and the unit is a 13,500 BTU AC device. However, those manuals are not service manuals and do not say how many BTUs their air conditioners have. The basic RVP AC unit manuals are very easy to find on the internet. These facts are something to consider when you are thinking of replacing your current AC unit. An RV measuring 500 square feet only needs about 11,000 to 12,000 BTUs in order to stay nice and cool. In fact, you would need an RV or trailer that is over 500 square feet in size to justify using a 13,500 BTU AC unit. A 30 foot by 10 foot RV is 300 square feet of space and a 7000 watt BTU AC unit is sufficient for that size of RV or trailer. With that said, most RVs do not need a 13,500 BTU AC unit to keep their rig cool. This puts some people in a quandary as their generators may only be rated for 2000 watts. On average the amount of watts a 13500 BTU AC unit will use is 2750 on start-up and 1250 for running time. The reason for this disparity is that these members may be using a different AC unit than the original member. One of the things we have noticed when reading different RV forums is that when one member posts a number, there is always another member or two who disagree and say something different. 13.5 k BTU Air Conditioner Watts (Starting vs Running) The way to solve this issue is to upgrade your RV and replace the 30 amp circuit box with a 50 amp one. If that happens you can trip a break because the units are using too much power. The less efficient units can put you in a bit of a pickle if your fridge or some other electric device starts at the same time. ![]() However, there are less efficient models and you are looking at using possibly 22 to 28 amps for a few seconds. The start-up is where your biggest concern will be as some very efficient models may use only 16 amps to get started and then drop down to 11 amps when running. The amounts your AC unit uses on startup and running time will depend on the make and model of the AC unit.įor example, one unit can use about 20 amps for a few seconds during start-up but when it starts to run that usage drops to about 12 to 14 amps and sometimes more. If your RV has a dual operation C unit, then you will use more amps for the heating portion than you would for the cooling side of the device. ![]()
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