Quote:
Originally Posted by marvinh11791
I am not a resident yet, but I was wondering if A/C contractors in TV will guarantee a 20 temperature reduction during a hot summer day? I am presently living on Long Island, NY and that clause was written into my A/C contract.
Second question: What indoor temperature do you prefer in the summer?
Thank you! MarvinH
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I'm guessing you own an older home?
Newly constructed homes are required to meet the Florida Building Code, which is the International Building Code (IBC 2021), with some modifications. New construction is also required to meet the Florida Energy Code, which again, is the International Energy Conservation Code (IECC 2021).
What that means in simple English is, prior to getting a building permit (including an HVAC replacement), the applicant has to produce an energy audit/analysis to verify proper HVAC sizing for a given structure. The Code dictates the size (capacity) of the HVAC system.
HVAC systems installed in the USA, generally have to meet Energy Conservation Codes, which essentially dictates the cooling/heating capacity and rate.
As a practical matter, any HVAC system installed in a home in the USA, will surely lower your temperature more than 20 degrees. The only variable, is how long it takes (& that's regulated by the energy code). As a rule of thumb, an HVAC system can move temperature up or down, about 3 degrees per hour.
A residential house temperature is personal preference. In a work environment, OSHA requires a temperature of 68 -76. We cool our offices/retail properties to 74 degrees in the summer (not located in Florida). My house is set at 76.
Here's a couple of links that explain how it works and why you don't want an HVAC unit that's too big for your home, nor too small. Weird, huh? You should get a properly sized unit.
Oversized Air Conditioner: What's the Problem?
https://bryantlincoln.com/understand...r-hvac-system/
What Happens If My Ac Unit Is Oversized?