Best Pipe Sizing Calc Hvac Apps

248+ iOS apps curated and reviewed

4.4 avg rating
8 free apps
Updated August 2026

With an average user rating of 4.4★, the pipe sizing calc hvac category is one of the App Store's strongest. Browse all 248+ apps we track, sorted so the most loved ones surface first.

Compare top Pipe Sizing Calc Hvac Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Pipe Sizing Calc HVACPipe Sizing Calc HVAC$0.99YesYesJun 2026
2HVAC Pipe Sizer - Gas PlusHVAC Pipe Sizer - Gas Plus$7.995.0★ (1)NoYesAug 2026
3HVAC Pipe Sizer PlusHVAC Pipe Sizer Plus$13.993.0★ (1)NoNoJun 2026
4HVAC Pipe Sizer - Gas LowHVAC Pipe Sizer - Gas Low$4.995.0★ (2)NoNoAug 2026
5HVAC Pipe Sizer - LiquidHVAC Pipe Sizer - Liquid$4.99NoYesAug 2026
6SuperCool Slide Rule HVACSuperCool Slide Rule HVACFree4.2★ (185)NoNoAug 2026
7Duct Calculator - DuctCalcDuct Calculator - DuctCalcFree4.6★ (32)NoYesAug 2026
8HVAC ToolkitHVAC Toolkit$23.995.0★ (2)NoNoJun 2026

Top Picks for Pipe Sizing Calc Hvac

More Pipe Sizing Calc Hvac apps to explore

4
HVAC Pipe Sizer - Gas Low
HVAC Pipe Sizer - Gas Low
HVAC Pipe Sizer - Gas Low
Low pressure gas pipe calcs
$4.99

Quickly size low-pressure gas piping systems by inputting flow, pressure drop, diameter, or velocity. Includes detailed gas and pipe properties, fitting data, and unit conversion.

Low pressure gas pipe sizingInput flow, pressure drop, diameter, or velocityCalculate exact and nominal pipe diameters
📊 Productivity
(2)
paid
5
HVAC Pipe Sizer - Liquid
HVAC Pipe Sizer - Liquid
HVAC Pipe Sizer - Liquid
Pipe size calcs for liquids
$4.99

Calculate pipe sizes for liquid systems, including hot and chilled water. Input flow rate, head loss, diameter, or velocity to determine other properties. Supports various liquids, pipe materials, and fittings, with English or metric units.

Liquid pipe sizingHydronic system calculationsInput flow, head loss, diameter, or velocity
📊 Productivity
(0)
paid
6
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
by Designstein, llc
Free

This app offers a comprehensive suite of tools for HVAC technicians. It provides interactive guides, step-by-step repair instructions, and calculators for various HVAC calculations including superheat, subcooling, and duct sizing.

Superheat & Subcooling chargingDuct sizing & layout calculatorCompressor windings troubleshooter
🔧 Utilities
(185)
free
7
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
HVAC Sizing & Psychrometric
Free

This app provides professional HVAC duct sizing and psychrometric calculations in a single tool. It offers detailed calculations for various duct types and materials, along with comprehensive humid air property analysis. Designed for HVAC professionals, it replaces traditional ductulators with accurate digital functionality.

Duct sizing for round, rectangular, and flexible ductsFittings pressure drop calculationPsychrometric analysis with interactive chart
🔧 Utilities
(32)
free with in-app purchases
8
HVAC Toolkit
HVAC Toolkit
HVAC Toolkit
HVAC calcs for all your needs
$23.99

This comprehensive toolkit offers essential HVAC calculations and tools for professionals. It combines multiple specialized applications into a single, convenient package for iPhone and iPad users.

Equipment tracking and customizationRefrigerant pressure-temperature chartsRefrigerant charge calculations
📊 Productivity
(2)
paid
9
Gas Pipe Sizing Calculator
Gas Pipe Sizing Calculator
Gas Pipe Sizing Calculator
by Connor Kelley
$1.99

This utility app simplifies gas pipe sizing by performing calculations based on BTU load, run length, and gas type. It eliminates the need for manual chart and codebook referencing, providing the minimum required pipe size quickly.

Calculates minimum gas pipe sizeInput BTU loadInput longest run length
🔧 Utilities
(4)
paid
10
Ductulator - Duct Sizing
Ductulator - Duct Sizing
Ductulator - Duct Sizing
HVAC Duct Design Calculator
$3.99

Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.

Instant duct sizingFriction rate or velocity calculationMultiple valid duct dimensions
📊 Productivity
(317)
free
11
HydroNomad: Pipe Sizing & Flow
HydroNomad: Pipe Sizing & Flow
HydroNomad: Pipe Sizing & Flow
Hydraulic Loss & HVAC Calc
Free
🔧 Utilities
(0)
12
HVAC Duct Sizer
HVAC Duct Sizer
HVAC Duct Sizer
HVAC duct sizing and more...
$5.99

This app provides quick and simple HVAC duct sizing analysis. It allows users to calculate duct dimensions based on airflow or existing dimensions, and can also determine a range of duct sizes. Results can be emailed for further analysis.

Duct sizing by airflowDuct sizing by dimensionsRange of duct sizes calculation
🔧 Utilities
(8)
free with in-app purchases
13
SMACNA Duct-U-Lator
SMACNA Duct-U-Lator
SMACNA Duct-U-Lator
Size Simple HVAC Duct Runs
Free

This tool simplifies HVAC duct sizing for professionals. It quickly calculates dimensions for rectangular, round, and oval ducts based on airflow, friction loss, and velocity, ensuring optimal ventilation system performance.

Rectangular, round, and oval duct sizingReal-time calculation updatesConverts duct shapes and sizes
💼 Business
(1)
free
14
HVAC Pipe Sizer - Gas High
HVAC Pipe Sizer - Gas High
HVAC Pipe Sizer - Gas High
by Carmel Software Corporation
$4.99

This utility app helps engineers quickly size high-pressure gas piping systems. Input flow, pressure, and pipe properties to calculate diameters, velocity, and equivalent length. Supports English and metric units with built-in tables for various pipe materials.

High-pressure gas pipe sizingInput flow, pressure, and pipe parametersCalculate exact/nominal diameters
🔧 Utilities
(3)
paid
15
Allday HVAC Calc
Allday HVAC Calc
Allday HVAC Calc
Pipe and Duct calculations
Free

This app offers three specialized modules for HVAC engineers: a psychrometric calculator for air properties, a pipe calculator for fluid dynamics and selection, and a duct calculator for air speed and pressure loss. It provides detailed calculations and reference formulas in both SI and IP units.

Psychrometric air property calculationsPipe velocity and pressure loss calculationDuct speed and pressure loss calculation
🔧 Utilities
(1)
free
16
HVAC Quick Load
HVAC Quick Load
HVAC Quick Load
Rule-of-thumb HVAC load calcs
$6.99

This app provides quick, rule-of-thumb HVAC load calculations for various building types. It estimates heating and cooling loads, as well as air flows, based on building type, area, and occupancy. Results can be emailed with an Excel spreadsheet attachment for further analysis.

Rule-of-thumb HVAC load calculationsSupports commercial, industrial, and residential buildingsEstimates cooling/heating loads and air flows
📊 Productivity
(3)
paid
17
HVAC Load Calc: Manual J
HVAC Load Calc: Manual J
HVAC Load Calc: Manual J
Heating & cooling calculator
Free
🔧 Utilities
(0)
18
Size the pipe - by MTA
Size the pipe - by MTA
Size the pipe - by MTA
by MTA Deutschland GmbH
Free
🔧 Utilities
(0)
19
HVAC Pipe Sizer - Steam
HVAC Pipe Sizer - Steam
HVAC Pipe Sizer - Steam
Steam pipe sizing and more...
$6.99

Quickly size steam pipe systems by inputting piping and steam properties. Includes a steam table calculator and HVAC equipment locator. Supports English and metric units.

Steam pipe sizingSteam table calculatorHVAC Equipment Locator
🔧 Utilities
(0)
paid
20
AC Calculator - HVAC Sizing
AC Calculator - HVAC Sizing
AC Calculator - HVAC Sizing
Air conditioner or Heat Pump
Free

This utility app simplifies HVAC sizing by calculating BTU/h capacity and recommending equipment. It offers unit conversions, price estimates, and energy consumption comparisons. Advanced features can be unlocked via in-app purchases.

Calculate BTU/h capacityRecommend equipment typesConvert BTU, kW, Kcal, Tons
🔧 Utilities
(20)
free with in-app purchases

FAQ about Pipe Sizing Calc Hvac

Are there free pipe sizing calc hvac apps for iPhone?
Yes — 8 of the top pipe sizing calc hvac apps we rank are free to download, including SuperCool Slide Rule HVAC and Duct Calculator - DuctCalc.
Pipe Sizing Calc HVAC shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 248+ pipe sizing calc hvac apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.