The U.S. Department of Energy mandates minimum HVAC efficiency ratings, known as SEER2 (Seasonal Energy Efficiency Ratio 2). In the region that includes Nevada, the minimum requirements are:
The system must meet the following criteria: Split systems: SEER2 rating of 15.2 or higher. EER2 rating of 11.7 or higher. HSPF2 rating of 7.8 or higher.
It's mostly us. Beginning in 2023, Hanna Heating & Air, along with every heating and air conditioning company in the United States, can no longer install an air conditioning unit with a SEER rating of 13 or less. The new federal regulation means all ACs we install will be SEER 14 or higher.
The Rule of 5000 Rule is simple: Multiply the cost of the needed repair by the age of your air conditioner. If the result is greater than 5000, AC replacement is generally the smarter choice. If it's less than 5000, a repair might still be worth the investment.
What's a good SEER2 rating? As of 2024, the U.S. Department of Energy requires that central air conditioning systems in the seven-state Tennessee Valley region have a minimum SEER rating of 15 and a minimum SEER2 rating of 14.3. The higher the SEER2 number, the more efficient your unit will be.
The Department of Energy requires all newly installed HVAC systems to meet regional SEER2 (Seasonal Energy Efficiency Ratio 2) standards. Minimum efficiency ratings vary by climate region (North, Southeast, and Southwest).
Many Amish homes are built with plenty of windows to help circulate the air and bring in the cooler overnight temperatures. They open the windows on the top floors to help the heat escape while the family retreats to the lower grounds within their homes for comfort.
The "two-foot rule" in HVAC is a duct design and installation guideline that requires a minimum of 24 inches of straight, uninterrupted space between branch take-offs (where air taps off the main trunk). It is also applied to spacing branches away from end caps, transitions, and the main plenum.
Which AC brand lasts the longest in 2026? Historically, Lennox, Trane, and American Standard lead the industry in longevity. With proper maintenance, these units can last 15–20 years.
Have HVAC Prices Gone Up in 2026? Yes HVAC prices have steadily increased over the past few years, and 2026 is no exception. These increases are affecting everything from entry-level systems to high-efficiency units, making it more expensive than ever to install or replace HVAC systems.
Systems with a 16 SEER rating are 13% more efficient than those with a 14 SEER rating, saving you hundreds of dollars in energy costs over several years. To put things in perspective, switching to a 16 SEER unit will save you roughly $13 for every $100 spent running a 14 SEER system.
Many Americans simply can't afford AC because of the rising costs of summer cooling. That could put them at higher risk of heat illness and death. This summer, the average electric bill is projected to reach $784, the highest cost in at least 12 years, according to the National Energy Assistance Directors Association.
R32 is much better for the environment: R32 has a global warming potential of 675, which is about 68 percent lower than R410A.
The most overlooked tax break depends on your situation, but the Saver’s Credit (Retirement Savings Contributions Credit) and out-of-pocket charitable/medical expenses consistently top the list. These breaks reduce your tax bill dollar-for-dollar without requiring you to itemize.
The overall total limit for an efficiency tax credit in one year is $3,200. This breaks down to a total limit of $1,200 for any combination of home envelope improvements (windows/doors/skylights, insulation, electrical) plus furnaces, boilers and central air conditioners.
If your heat pump is unexpectedly expensive to run, the most common culprits are inefficient auxiliary/backup heat, high local electricity rates, or a system that isn't sized properly.
The top three air conditioning brands for reliability and premium performance in the US are Carrier, Trane, and Lennox.
The best air conditioners this year prioritize inverter technology for ultra-quiet performance, smart-home integration, and high energy efficiency. Leading models are categorized by their mounting type and room size to match your home perfectly.
7 Signs You Need HVAC Repair
Simply put, it means you should never set your thermostat for a temperature more than 20 degrees cooler than the outside air. Why not? Most air conditioning systems can only handle a 20-degree difference between the outside and inside air temperatures.
The answer: neither is ideal. Properly sized ductwork helps your system move air efficiently, keeps your home comfortable, and prevents unnecessary strain on your equipment.
In many cases, a 3-ton AC is the perfect size for a 1,500-square-foot home. However, it can be too big if your home is highly energy-efficient, as an oversized unit will "short cycle" (turn on and off too fast) and leave the air uncomfortably humid.
Yes, Amish people bathe regularly, though the frequency and methods vary significantly depending on the season, how physically active they are, and the strictness of their specific church district.
Summary: The Amish typically have their teeth pulled out by unlicensed dentists instead of incurring the high cost of dentistry. They perceive dentures as more cost effective and easier to maintain oral health.
Many traditional Old Order Amish communities view store-bought toilet paper as an unnecessary indulgence or luxury. Instead, they rely on readily available, sustainable alternatives like crumpled-up old newspapers, mail-order catalogs, corn cobs, and cloth rags, though more progressive groups now commonly use conventional toilet paper.