You’ve probably heard that too much air conditioning power is not a good thing. And maybe it’s been muggy in your house– and you’re wondering if this could be the problem. To recap: an oversized air conditioner will shut off before the house is dehumidified. This quick cycling on and off creates more wear and tear on the unit. This is especially important if you live in South Florida where, as I write this, the relative humidity is about 95%.Not to mention you’ll spend more money if you’re buying too much AC power. How can you tell if your AC is sized properly for your home? If you’ve been following our “Get Educated’ pages, you may be familiar with the term, Manual J. This is a technical assessment your contractor performs to determine how big an AC unit to install. But if you’re a homeowner there are other handy ways to tell if the AC is right for your space. Here are a few rough guidelines: How long does the unit run? If it’s only on for 5-10 minutes before shutting down, it’s probably too large.

It should run for 30-40 minutes and then shut down for a good while. Check the label on your AC unit. The model number will usually include the BTUs– that is, how many BTUs your unit can move out of your house. cost of new ac unitSo for instance, a Mitubishi D36NA is a 36,000-BTU unit. how much does it cost for new ac unitIf it doubt, google your manufacturer’s name and model number (Mitsubishi D36NA). inside ac unit not turning onYou should come up with the manufacturer’s information which includes the BTUs and the SEER rating. But if you have questions about your AC’s cooling capacity and it doesn’t feel right, you can do a rough-check with your contractor. And if your HVAC guy has done his homework and the unit is sized properly, you’ll impress him with your knowledge.