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How To Determine The Perfect Size HVAC System For Your Home

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Determining the perfect size for your home’s HVAC (Heating, Ventilation, and Air Conditioning) system is crucial to ensure comfort, efficiency, and longevity of the equipment. An oversized or undersized system can lead to many problems, including inefficient energy use, increased utility bills, uneven temperatures, and premature system failure.

To help homeowners like you, this discussion will guide you through the steps to accurately size an HVAC system for your living space. Read on.

The Importance Of Correct HVAC Sizing And How To Properly Determine It

Before delving into the specifics, it’s important to understand why proper HVAC sizing is essential.

An HVAC system that’s too large will cycle on and off more frequently, a process known as short-cycling, which can lead to wear and tear on components, uncomfortable temperature fluctuations, and wasted energy.

On the other hand, a system that’s too small will struggle to maintain the desired temperature, particularly during extreme weather conditions, leading to constant running, increased energy consumption, and potentially leaving your home uncomfortably warm or cold.

Calculating The Square Footage

The first step in determining the right HVAC system size is to calculate the total square footage of the area needing heating or cooling.

Measure the length and width of each room and multiply these figures to find their areas. Add up these areas to get the total square footage. Remember, for homes with multiple levels, you should calculate the area of each level separately and then add them together.

Understanding The Climate Zone In Your Locality

Different regions require different levels of heating and cooling due to varying climatic conditions.

In Northern America, for instance, there are several climate zones defined by the authorities. Each zone has specific heating and cooling needs expressed in BTUs (British Thermal Units) per square foot. Knowing your location’s climate zone will help you determine the base BTU requirement for heating and cooling per square foot of your residence.

If you’re in Canada, make sure to reach out to local building authorities in your area to determine what is the climate zone there and what is the appropriate HVAC for it.

Accounting For Occupancy And Appliance Heat

The number of people living in your home and the heat generated by appliances and electronics also influence the size of the HVAC system required. Each person and appliance add heat to your home, which can be particularly significant in smaller, well-insulated spaces.

Adding a certain amount of BTUs per person and for the heat generated by appliances can help ensure that your system can handle these internal heat gains. Ontario’s top providers of professional heating and cooling solutions can help you determine the exact figure.

Calculating The Final BTU Requirement

Once you’ve gathered all the necessary information, you can calculate the approximate BTU requirements for your home. This involves adjusting the base BTU figure (from your climate zone and square footage) for factors such as occupancy and internal heat gains.

Many online calculators can help with this, but for accuracy, these calculations should ideally be confirmed by an HVAC professional. These professionals bring a wealth of experience and dedication to ensuring your home’s HVAC system is perfectly sized to meet your needs.

Taking Into Account Insulation And Windows

The quality of your home’s insulation and the type and condition of the windows significantly affect your HVAC sizing, a crucial aspect of properly installing your at-home HVAC.

Good insulation reduces heat loss in winter and heat gain in summer, decreasing the demand on your HVAC system. Similarly, energy-efficient windows can help maintain stable indoor temperatures.

Homes with poor insulation or older windows may require a larger HVAC capacity to maintain comfort levels, emphasizing the importance of accurate evaluation during installation.

Considering The Efficiency Of The HVAC System

When choosing an HVAC system, it’s important to consider the unit’s size and efficiency. Units are rated by SEER (Seasonal Energy Efficiency Ratio) for cooling and AFUE (Annual Fuel Utilization Efficiency) or HSPF (Heating Seasonal Performance Factor) for heating.

Select an HVAC with higher efficiency to help you offset a higher initial cost through lower utility bills over the system’s lifespan.

Getting A Professional Assessment

While homeowners can perform initial calculations, a professional HVAC contractor can provide a more accurate assessment using the Manual J calculation process. This method considers various factors, including climate, house orientation, insulation levels, window types, and more, to determine your home’s most accurate HVAC size.

Hiring a professional to do the HVAC sizing assessment for you ensures that all aspects of your home’s unique characteristics are considered, leading to a more tailored and efficient sizing.

To Conclude

Determining the perfect size for your HVAC system involves a detailed process that accounts for your home’s square footage, insulation quality, climate zone, window types, occupancy, and internal heat gains. While homeowners can make preliminary estimates, consulting with a professional for a comprehensive assessment ensures the most accurate and efficient sizing.

Remember, a correctly sized HVAC system is key to maximizing comfort, efficiency, and longevity of your system, helping to create a more comfortable and sustainable home environment.

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Opinions on what Tagovailoa should do next vary after his 3rd concussion since joining Dolphins

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MIAMI GARDENS, Fla. (AP) — Nick Saban has a message for Tua Tagovailoa: Listen to experts, then decide what happens next.

Antonio Pierce had another message: It’s time to retire.

Saban, Pierce and countless others within the game were speaking out Friday about Tagovailoa, the Miami Dolphins quarterback who is now dealing with the third confirmed concussion of his NFL career — all coming within the last 24 months. He was hurt in the third quarter of the Dolphins’ 31-10 loss to the Buffalo Bills on Thursday night, leaving the game after a scary and all-too-familiar on-field scene.

“This has to be a medical decision,” Saban said on ESPN, where the now-retired coach works as an analyst. “I mean, you have to let medical people who understand the circumstances around these injuries, these concussions — and when you have multiple concussions, that’s not a good sign.

“I think Tua and his family and everyone else should listen to all the medical evidence to make sure you’re not compromising your future health-wise by continuing to play football.”

That process — gathering the medical facts — was getting underway in earnest on Friday, when Tagovailoa was set to be further evaluated at the team’s facility. He was diagnosed with a concussion within minutes of sustaining the injury on Thursday and there is no timetable for his return.

“I’ll be honest: I’d just tell him to retire,” Pierce, the coach of the Las Vegas Raiders, said Friday. “It’s not worth it. It’s not worth it to play the game. I haven’t witnessed anything like I’ve seen that’s happened to him three times. Scary. You could see right away, the players’ faces on the field, you could see the sense of urgency from everybody to get Tua help. He’s going to live longer than he’s going to play football. Take care of your family.”

Concern — and opinions — have poured in from all across the football world ever since Tagovailoa got hurt. It is not a surprising topic — the questions of “should he? or shouldn’t he?” continue to play — nor is this the first time they have been asked. Tagovailoa himself said in April 2023 that he and his family weighed their options after he was diagnosed twice with concussions in the 2022 season.

But Dolphins coach Mike McDaniel said it’s not his place, nor is it the time, to have discussions about whether Tagovailoa should play again.

“Those types of conversations, when you’re talking about somebody’s career, it probably is only fair that their career should be decided by them,” McDaniel said.

The Dolphins said Friday that they will bring in another quarterback, and for now are entrusting the starting job to Skylar Thompson. McDaniel said the team will not rush to any other judgments, that the only opinions that truly matter right now come from two sides — Tagovailoa and his family, and the medical experts who will monitor his recovery.

“The thing about it is everybody wants to play, and they love this game so much, and they give so much to it that when things like this happen, reality kind of hits a little bit,” Jacksonville coach Doug Pedersen said Friday. “It just shows the human nature, or the human side of our sport.”

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AP Sports Writer Mark Long in Jacksonville, Florida, contributed to this report.

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Canada’s Sarah Mitton captures shot put gold at Diamond League in Brussels

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BRUSSELS – Canadian shot putter Sarah Mitton rebounded from a disappointing performance at the Paris Olympics by capturing Diamond League gold on Friday.

Mitton, of Brooklyn, N.S., won the competition, the final Diamond League event of the season, with a heave of 20.25 metres on her third throw.

Chase Jackson of the U.S. placed second with a throw of 19.90, while German’s Yemisi Ogunleye, the Olympic gold medallist, claimed bronze with a toss of 19.72.

Mitton, the runner-up of last year’s world championship, failed to qualify for the top eight in Paris.

Edmonton runner Marco Arop, who won silver for Canada in the men’s 800 metres at the Paris Games, was scheduled to race in the 800 on Saturday.

Olympic bronze-medallist Alysha Newman, of London, Ont., also competes Saturday in the women’s pole vault.

This report by The Canadian Press was first published Sept. 13, 2024.

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Michigan’s Greg Harden, who advised Tom Brady, Michael Phelps and more, dies at 75

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ANN ARBOR, Mich. (AP) — Greg Harden, who counseled countless people at the University of Michigan from Tom Brady to Michael Phelps, and Desmond Howard to J.J. McCarthy, has died. He was 75.

Michigan athletics spokesman Dave Ablauf said the family informed the athletic department that Harden died Thursday due to complications from surgery.

The late Bo Schembechler, a College Football Hall of Fame coach, hired Harden in 1986 as a staff consultant and student-athlete personal development program counselor.

“He meant the world to me and I could never have had the success I had without the time, energy, love and support he had given me,” said Brady, a former Michigan quarterback who went on to win seven Super Bowls in a 22-year career.

Howard, who won the Hesiman Trophy in 1991, was part of the first wave of Wolverines to count Harden as a confidant, mentor and friend.

“Greg brought wisdom, joy and his calming nature to every encounter,” Howard said. “His presence will be missed by all of us.

“Although my family and I are heartbroken, we hold on to the lessons, guidance and memories that will forever be Greg’s legacy. We are blessed beyond measure to have had him in our lives.”

Harden, who was from Detroit, earned undergraduate and master’s degrees at Michigan.

Phelps lived and trained in Ann Arbor, Michigan, after emerging as swimming star at the 2004 Athens Olympics, and worked on his mental health with Harden.

Harden retired from his role as director of counseling for Michigan’s athletic department in 2020. He still continued to work, advising student-athletes at Michigan along with the Toronto Maple Leafs as the NHL team’s peak performance coach.

He published his first book, “Stay Sane in an Insane World: How to Control the Controllables and Thrive,” last year.

Michigan athletics announced Harden’s death, and shared statements from some of the many people who knew him.

McCarthy, a Minnesota Vikings rookie quarterback, sent the school his thoughts in the form of a letter to Harden.

“You gave me the courage and belief as we fought hand and hand against the demons that I’ve spent my entire life fighting,” McCarthy wrote. “You have inspired me by your ability to unconditionally love everyone and everything.”

While many famous football players worked with Harden, he also was a trusted adviser for women and men in all sports and walks of life, including broadcaster Michelle McMahon, who played volleyball at Michigan.

“He poured his heart into thousands of students, athletes, and celebrities alike without any expectation of gaining anything in return,” McMahon said. “He dedicated his entire life to making a difference and investing in the growth of the young impressionable minds that were lucky enough to meet him.

“His captivating presence and charisma captured the rooms he walked in. Greg’s gift to the world was his unwavering ability to help people see themselves fully, in full acceptance of their flaws and their gifts. His relentless approach made it impossible for his mentees to give up on themselves.”

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Follow Larry Lage at https://twitter.com/larrylage

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