BTU Calculator

Calculate the BTU capacity needed for heating or cooling any room. Enter your room dimensions, insulation level, and climate zone for an accurate HVAC sizing estimate based on ASHRAE standards.

BTU Calculator

Determine the right size air conditioner for your room

Your recommended air conditioner size will appear here.

Energy Cost Calculator

Estimate the monthly operating costs of your heating and cooling systems

Example: 14 for a 14 SEER AC or 95 for a 95% AFUE furnace

Your estimated monthly energy cost will appear here.

Duct Sizing Calculator

Determine the proper duct size needed for efficient airflow in your HVAC system. Properly sized ducts improve comfort and reduce energy costs.

Airflow Information

CFM = Cubic Feet per Minute. Typical range: 100-200 CFM per ton of AC capacity
Measure the total distance from the air handler to the furthest outlet

Duct Specifications

Measured in inches of water column per 100 ft – lower values mean quieter operation

Your recommended duct size will appear here.

Duct Sizing Considerations

  • Undersized ducts restrict airflow, causing your system to work harder, increasing energy costs and potentially leading to premature equipment failure.
  • Oversized ducts can reduce air velocity, affecting proper distribution and potentially causing uneven heating or cooling.
  • Friction rate affects noise levels – lower friction rates mean quieter operation but require larger ducts.
  • Duct material affects efficiency – flexible ducts typically have higher friction losses than smooth metal ducts.
  • Professional verification is recommended before installation to ensure proper system performance.

Efficiency Savings Calculator

Compare costs and potential savings between different HVAC efficiency ratings to see the financial benefits of upgrading your system.

Current System

For air conditioners/heat pumps (SEER): 8-10 for older systems, 13-16 for standard systems For furnaces (AFUE %): 70-80% for older systems, 80-90% for standard systems

New System

For air conditioners/heat pumps (SEER): 16-18 for high efficiency, 20-30 for premium systems For furnaces (AFUE %): 90-95% for high efficiency, 96-98% for premium systems

Usage & System Information

Typical home sizes: 1.5-2.5 tons for 600-1500 sq.ft., 3-4 tons for 1500-2500 sq.ft.
Typical values: 1000-1500 hrs for moderate climates, 2000-3000 hrs for extreme climates
The national average is approximately $0.15/kWh for electricity and $1.50/therm for gas
For payback period calculation – typical range: $3,000-$10,000 (varies by system type/size)

Your potential savings will appear here.

Efficiency Upgrade Benefits

  • Lower utility bills: Higher efficiency ratings mean less energy consumption for the same cooling/heating output.
  • Environmental impact: Reduced energy use means fewer greenhouse gas emissions.
  • Better comfort: Newer, more efficient systems often provide more consistent temperatures and better humidity control.
  • Available incentives: Check for federal tax credits, utility rebates, and manufacturer incentives that can reduce the cost of upgrading.

Ventilation Calculator

Determine the proper ventilation requirements for your space based on room dimensions, occupancy, and usage.

Room Information

Usage Parameters

Average number of people typically in the room

Your recommended ventilation requirements will appear here.

Ventilation Basics

  • Fresh air exchange is critical for removing indoor pollutants, controlling humidity, and maintaining healthy indoor air quality.
  • Air changes per hour (ACH) refers to how many times the air volume in a space is replaced with fresh air every hour.
  • CFM (Cubic Feet per Minute) is the standard measurement for airflow volume.
  • Inadequate ventilation can lead to excess moisture, mold growth, and buildup of indoor pollutants.
  • Excessive ventilation can increase energy costs and create uncomfortable drafts.

Ideal Humidity Guide

Coming soon – Learn about optimal humidity levels for different seasons and how to maintain them for comfort and health.