Don't Sweat It
In BTUs (British Thermal Units) 12,000 BTUs per hour is equal to one ton of cooling, One BTU refers to the amount of energy that is required to increase the temperature of a pound of water by 1° F
This depends on many factors, what direction the windows face and the efficiency of the windows, what R-value insulation are in the attic and walls, the only way to properly measure the tonnage needed is to have a manual J heat Load calculation done on the home.
By Seer (seasonal Energy Efficiency rating) an AHRI certificate can be acquired to show system matchups and the total system SEER.
Routine maintenance annual or semi-annual maintenance is the best way to insure the efficiency of your AC unit, energy upgrades will also help, but be aware when major efficiency upgrades to the house are made, it may be best to have a Manual J calculation done on the home to ensure the current system is not over sized for the home due to the decrease in heat load on the home.
NO! If the system is a higher capacity than needed, it will cool the house down too fast, causing short cycling issues and the AC will not run long enough to draw the humidity out of the home, this can cause mold and mildew issues in the home.
This depends on the type of system and home, fully variable speed systems will have longer run times than single stage and 2 stage equipment do draw humidity out, but these systems adjust the cooling capacity as needed. long run times on a single stage system will indicate that service is needed.
NO, the system needs to run at a temperature to keep a safe humidity level in the home which ideally will be below 60%.
The temperature leaving the air handler should be approximately 18-20 degrees difference from the inside temperature.
76-78 degrees is average for the cooling season, humidity levels are the most important, some efficient homes maintain below 60% humidity with the thermostat set higher than others.
Advantages would be automating your thermostat to a higher set point to save money on energy when the house is vacant, then set it to a desired temp when occupied.
It varies, should be checked every 30 days, and changed accordingly. Even if the filter is a 90 day or 6-month filter, every house is different, most 90-day filters should be changed earlier.
Change filters, clean drainline, open air handler and sanitize where mildew may be growing, install drain pan tablets every 6 months or vinegar down the drain once a month, 1 tablespoon baking soda backed with 1 cup vinegar.
Semi-annual maintenance is best for residential and quarterly for businesses, annual maintenance should at least be done, to ensure efficiency and cleanliness of indoor air quality.
Make sure breakers are in the on position and not tripped, reset breaker if tripped. Sometimes turning off the breakers and resetting them will fix an issue, follow up for service is still recommended.
Most systems range from mid-4,000s to mid-5,000s for a basic system and mid-6,000 to mid-8,000 for mid-grade, high end is usually on average 10,000+.
All AC systems are safe for the environment if they are maintained and free of refrigerant leaks, best way to ensure this is routine maintenance check-ups where the refrigerant level is checked semi annually.
Yes, these are designed to electrically charge dust particles in the air causing them to stick to one another which increases the efficiency of the filter.
No, the duct system is designed to handle a certain static pressure, most commonly around 0.5 inwc. If vents are closed the static pressure could raise above what the system is designed for causing air handler sweating and mold and mildew growth inside the air handler and ductwork.
Humidity is very low in the colder months and if humidity is to low it may result in nosebleeds and effect the overall comfort of the space, these are primarily used in northern states that get very cold in the winter. During the warm months, the opposite occurs, the AC dehumidifies the home from the summer’s higher humidity levels. ideal humidity in a home will range from 30-50% but should at least be below 60%, depending on the efficiency of the home.
Is it reaching the set temperature throughout the day? most systems will cool the house 20 degrees from the outside temperature, depending on humidity levels. If the house feels humid and takes very little time to cool the home, the system may be oversized. Having a Heat Load calculation done is the only sure way to know.