Heating and Air Conditioning 2021 | KFI AM 640

5 Responsibilities of HVAC Homeowners

  1. Keep your condenser clean and clear
  • 12” min. free air space
  • Keep the coil fins as clean and dry as possible
  • Bent Fin tool
  • Rinse from the inside out
  • Use rinse cleaner – 10-15 min then wash with gentle spray
  1. Do not
  • Do not lock cash registers or rooms
  • Do not block the return air grille
  • Don’t let the house get too hot
  1. Replace your filter every 90 days – Your AC filter is not primarily for YOU!
  • #1 cause of early system failure. Poor circulation leads to congestive heart failure.
  • Filters range in price from $3-$25 and in FPR (Filter Performance Rating) from 4-10.
  • High-Efficiency Particulate Arrestance (HEPA) filters can remove up to 99.7 percent of contaminants — pollen, mold spores, dust mites, etc. — but they also require significant pressure to force air through them, making them too restrictive for use in HVAC systems that were not designed for them. Contact your air conditioning service company.
  • Electrostatic Air Filters – Washable, Less Static Resistance – $99
  • Set a monthly reminder or get a Filterscan WiFi Alert Unit ($140)
  1. Have an annual check – especially for refrigerant levels – low refrigerant can damage the compressor
  2. Know where your secondary condensate drain is located

How AC works

Tonnage is a weird and archaic way of measuring AC output. In fact, saying AC “output” itself is a misleading and inaccurate way of describing what AC does. Without getting into the weeds, let’s talk about what’s really going on with your air conditioning.

Cold is not a thing. Scientifically speaking, cold is nothing. Cold is a void. The absence of heat energy. So since cold is nothing, we can’t pump it into your house. What we can do is remove heat. Heat is one thing. It’s energy. We can add it to your home and remove it through the AC. Once we’ve removed some heat, we’re left with what we call cold.

AC uses a magic liquid called refrigerant. Refrigerant changes from a gas to a liquid at very extreme temperatures, so that it becomes very ‘cold’ and can first absorb a lot of heat and then release it again.

Your air conditioner pumps refrigerant in and out of your home in a closed circuit. Inside the house, a fan blows your warm house air over the cold refrigerant pipe, which draws a lot of heat from the air. Then your system pumps the hot vapor refrigerant to a unit outside the house where it is recompressed and cooled so that it condenses back to a liquid and then sent back into the house to do it all over again. The part in your house is the fan and the evaporator. The outside part is the compressor and condenser.

Ductless Mini Split Solutions – Condenser and Cassette

  • New low cabinets
  • multi-zone – one condenser, multiple cassettes
  • Recessed ceiling cassettes
  • Olympia Splendid’s Maestro Pro is the world’s first mini non-split AC/heat pump


When we replaced horses with cars, we started measuring engines by horsepower. That made sense if an engine had 1 or 2 or 5 horsepower. But it no longer makes sense.

When the first refrigerators and air conditioners appeared, they replaced ice and were therefore originally measured in tons of ice. It also makes little sense anymore. Now we describe AC ​​in terms of BTUs.

If you’ve ever wondered how much cooling power an AC unit has What’s important to note is that AC is all about “Tonnage” describes how much heat is removed from a room in 24 hours. In modern science, one tonne of air conditioning capacity is equivalent to the ability to remove 12,000 BTU of heat per hour.

Energy consumption

Every year, the US uses the same amount of energy to power air conditioners as Africa does to power the entire continent. Some architectural styles are directly attributed to the need for cooling, namely: the southern wraparound covered porch.

Variable Speed ​​Multi-Zone Systems

Imagine that every room in your house has a hidden, silent air conditioner with its own room thermostat. That’s what a variable speed zone system achieves.

  • Not all parts of your house handle temperature equally well
  • Separating zones requires electronic dampers and AC. with variable speed
  • The huge energy savings come from a single room AC running all day versus a whole house unit turning on and off in an effort to address exceptional rooms.
  • There are limits – most variable units only drop to 20%-30% capacity. That might be too big for just one room. A good zone design is therefore of crucial importance.
  • Why would I want an air conditioner that lasts longer and cools my house more slowly?”

Humidity – Variable speed compressors, longer run times dehumidify your home more effective, leaving you feeling cooler and more comfortable at higher temperatures. Oversized units are terrible at removing moisture and waste.

Short cycling – Most of an AC’s electricity consumption occurs when it’s turned on, not while it’s running. Short cycle single stage compressors. Prevent the spread of dust mites

Cleaner Air – More air is circulated through the filter, resulting in a lower volume of contaminants.

Quiet – No blasts of air in rooms. More restrained, consistent airflow. Outdoor – Quieter Compressor

Smart Thermostats

  • Learning
  • Programmable
  • Remote App Control

Buy the highest SEER rating you can afford

Seasonal energy efficiency ratio is a ratio between cooling and energy consumption.

  • In 1992 the SEER was 10
  • 2006 minus SEER was 13
  • 2015 minus SEER is 14
  • SEER 15 within 5 years (2023)

Even if your air conditioner is only 10 years old, you can save 20% to 40% on your cooling energy costs by replacing it with a newer, more efficient model.

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