HVAC system

How Proper Sizing Matters for Your HVAC System

April 25, 2020

If you’re shopping for a new furnace or air conditioner for your Fairfax, Virginia, home, you’re probably thinking about equipment features, SEER, and AFLUE ratings. However, HVAC system sizing is one of the most important considerations for comfort and efficiency.

The Importance of Correct HVAC System Sizing

When it’s time for an HVAC replacement, some contractors just swap out systems for a similarly sized unit. At Vernon The Heating & Cooling Specialist, we perform detailed sizing calculations for each customer and each installation. In many ways, it’s the most important step in the replacement process. Here’s why.

  • Proper sizing calculations help your HVAC system deliver balanced airflow to each room.
  • Oversize AC equipment cools the air too quickly, which prevents optimal humidity control.
  • HVAC systems that aren’t sized as recommended are prone to unnecessary wear and tear.
  • Rule-of-thumb calculations tend to recommend oversized equipment, which inflates your costs.

HVAC Equipment Capacities

Residential HVAC equipment is available in a wide range of capacities designed for condos and apartments as well as spacious multistory homes. Central air conditioners and heat pumps go from 1 to 5 tons, and systems are available in half-ton increments. Furnaces are typically rated according to their BTU capacity.

HVAC System Sizing Formulas

Our contractors use sizing formulas outlined in Manual J, a load calculation guide published by Air Conditioning Contractors of America. Here are some of the key points.

  • Assessing your building’s square footage is an important first step to ensure that your new heater or air conditioner fits your needs.
  • Our sizing calculations compensate for household activities that generate heat and humidity.
  • Heat gain from sun exposure is another important consideration since it affects your home’s heating and cooling needs.
  • We also assess your home’s insulation envelope to estimate potential energy losses.

If you’d like to learn more, call Vernon The Heating & Cooling Specialist to schedule a free estimate at your home or business. Additional information about our HVAC installation services is available online.

You May Also Like

4 Reasons Your Heat Pump Won’t Stay On in Washington D.C.

4 Reasons Your Heat Pump Won’t Stay On in Washington D.C.

If your heat pump isn't running properly, it can be a cause for concern. You may find that the system shuts off after just a few minutes of operation or won't even start in the first place. The following are some potential causes for why your heat pump in Washington...

5 Benefits of a New Furnace in McLean, VA

5 Benefits of a New Furnace in McLean, VA

When it comes to having a cozy home, your furnace is one of the essential pieces of equipment. A new furnace can go a long way in providing you with superior heating performance and energy savings year-round. Below are some of the benefits of investing in a new...

Why Won’t Your Boiler Shut Off in McLean, VA?

Why Won’t Your Boiler Shut Off in McLean, VA?

McLean, VA has many historic homes and neighborhoods that still use boilers. While you need that boiler on cold days, even a new one can run all day and night and refuse to shut off. Find out some of the reasons why it won't turn itself off. Stuck Valve Your boiler...

Why Choose Us

24/7 Emergency Service

NATE-certified technicians

Get Service in Hours, not DAYS

100% Satisfaction Guaranteed

Over 40 Years of Serving Washingtonians


Drug Free and Criminal Background-checked Technicians

  • This field is for validation purposes and should be left unchanged.

Pin It on Pinterest

Compliance Settings
Increase Font Size
Simplified Font
Underline Links
Highlight Links