Sizing Guides

  • Industrial warehouse with a large HVLS ceiling fan overhead – blog header for HVACDirect.com’s HVLS Fan Sizing Guide explaining how to size a high-volume ceiling fan in five simple steps.
    October 31, 2025

    HVLS Fans: 2025 Sizing Guide - How to Size a High-Volume Ceiling Fan in 5 Simple Steps

    Proper HVLS fan sizing is the key to efficient cooling in large commercial or industrial spaces. This step-by-step guide explains how to calculate CFM requirements, match fan diameter to your facility size, and ensure consistent, energy-saving airflow year-round. Whether you manage a warehouse, gym, or manufacturing floor, learn how to choose the best high-volume ceiling fan to improve comfort and reduce HVAC costs.
  • "Modern pool heat pump unit installed beside a clear blue backyard swimming pool on a sunny day
    June 12, 2025

    How to Size Your Pool Heat Pump with Cooling for Maximum Efficiency

    Discover the simple three-step method to size your pool heat pump with cooling: calculate your pool’s volume, apply the climate-based BTU rule of thumb, and choose between inverter or fixed-speed technology. Get the right capacity for efficient heating & cooling—and extend your swim season without wasting energy.
  • Quest Hi-DRY commercial dehumidifier operating in a warehouse aisle with pallet racks and a wet, reflective floor
    June 2, 2025

    Commercial Dehumidifier Sizing Made Simple (for Businesses, Growers & More)

    Sizing a commercial dehumidifier isn’t just about comfort—it’s about compliance, protecting equipment, and preserving products. This guide breaks down how to calculate your daily moisture load (in pints-per-day), match it to the right Quest or industrial unit, and avoid costly under- or over-sizing. Perfect for gyms, warehouses, grow operations, and restoration professionals who need a clear, no-nonsense approach to “what size commercial dehumidifier do I need.”
  • Couple relaxing in a dry, comfortable home with a Santa Fe residential dehumidifier controlling humidity in the living room.
    May 29, 2025

    What Size Dehumidifier Do You Need? A Beginner’s Guide for Homeowners

    Not sure what size dehumidifier you need? This beginner-friendly guide walks you through measuring your space, assessing moisture levels, and matching conditions to the right dehumidifier. Whether you’re dealing with a damp basement, a musty crawl space, or an entire home with high humidity, you’ll find clear answers and trusted product recommendations—especially from brands like Santa Fe. Perfect for homeowners seeking healthier air and lasting comfort.
  • Mini Split Air Conditioner Sizing Guide of 2026
    January 1, 2025

    Mini Split Air Conditioner Sizing Guide of 2026

    Learn how to accurately size Mini Split HVAC system for any zone or space with our comprehensive guide.Choosing the right mini split system size is crucial for maintaining comfort and energy efficiency in your home or commercial space for the long-term. Many homeowners worry about the potential issues caused by over-sizing or under-sizing their mini split system, especially since these systems are designed to heat and cool individual rooms without relying on whole-house ducting.
  • How Many Square Feet Can a Mini Split Cool?
    September 27, 2024

    How Many Square Feet Can a Mini Split Cool?

    Wondering how many square feet a mini split can cool? Discover the factors influencing its cooling capacity, from room size to insulation quality, and ensure optimal comfort in your space. Learn more about selecting the right mini split for your needs.
  • April 22, 2022

    What size air conditioner and furnace do I need?

    What size air conditioner do you need? This video takes you through our Air Conditioner & Furnace Size Calculator. We’ll walk you through how to size your HVAC system using our sizing calculator.

    Click to learn more and watch our video!

  • People enjoying their Mini Split system
    February 25, 2019

    5 Things You Should Know About Mini Splits

    Many homes will use a mini-split system for a section of the home that does not have central HVAC attached to it. This could be an addition that was added on after the central system was installed or maybe a porch area or separate building that could not have ducting connected to it. As Mini splits grow in popularity more homes have started using them to heat and cool the entire home.
  • Size Your Air Conditioner or Heater
    October 12, 2015

    How To Size Your Air Conditioner or Heater

    When sizing air conditioners, be careful not to make the mistake of getting one that is too large. If the system you install is too large for the space, it will short cycle. In other words, the compressor will not run long enough to dehumidify the space and will limit your comfort.
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