HVACalc Downloads & RevenueHVACalc · App Store
HVACalc is #152 in Reference Paid in United States and charting in 1 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperBob Sanford
CategoryReference
Price0.99 USD
Released
Rating★ 0.0 (0)
Version1.2.0
Age rating4+
First seen by us
11 Oct 2026
11 Oct 2026Full timeline · 3 events
- 🆕HVACalc first spotted by AppInsider#56 in Top Paid · Reference · United States
- 📦HVACalc version 1.2.0Version 1.2 — Accuracy upgrade
• Manual J-lite mode in BTU Load. Per-surface envelope calculation
with walls, ceiling, floor, glazing (U-factor + SHGC), infiltration
via ACH50, and internal gains. Loads scale to ASHRAE design
temperatures for the selected climate zone. Quick Estimate stays
available for ballpark sizing.
• Duct sizing aspect ratios. Rectangular ducts now pick from
1:1, 1.5:1, 2:1, 3:1, and 4:1 — the calculator returns both
dimensions.
• Area-based window loads. Glazing in Quick Estimate now scales by
area × U·ΔT plus SHGC solar gain instead of per-window constants.
• Climate-aware design temps. Every climate zone exposes 99% winter,
1% summer, and coincident humidity ratios from ASHRAE Fundamentals.
• Tightened formulas, twenty new reference-case tests locking
psychrometric and load math to published ASHRAE values.… more - 🆕HVACalc released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
Best rank now
#152
Reference PaidMeasured
HVACalc on the App Store
App details
App ID
6755114615
Publisher
Bob Sanford
On the store since
Nov 2025
Under a year
Minimum OS
iOS 16.6+
iPhone 8 and later
Devices
iPhone · iPad
Content rating
4+
Languages
1
EN
Size
10 MB
Also listed in
Utilities
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | ReferencePaid | #152 |
Apps near HVACalc on the chart
Reference Paid, around #152.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About HVACalc
HVAC Calculators puts a field-ready reference in your pocket. Browse 40 purpose-built tools for system design, airflow, refrigeration, diagnostics, and economics so you can check loads, balance air, and verify performance before you leave the rooftop.
**What you can do**
Size comfort systems with BTU Load, AC/Furnace/Boiler/Heat Pump, ventilation load, make-up air, humidity control, and expansion valve calculators, plus an optional Manual J-lite per-surface envelope mode for defensible heating and cooling loads.
Dial in airflow with Duct Sizing (round or rectangular, 1:1 through 4:1 aspect ratios), CFM vs ACH, friction loss, fan law, grille/diffuser sizing, and static pressure tools.
Keep refrigeration and hydronics on point with refrigerant charge, line sizing, coil performance, pump head, water/gas pipe sizing, and glycol concentration helpers.
Troubleshoot faster using superheat & subcooling, temp rise/drop, dew point, wet bulb, relative humidity, moist air enthalpy, compressor efficiency, and an ASHRAE 62.1 ventilation workflow.
Run the numbers behind the job with unit conversions, wire size and Ohm’s Law, motor amperage, energy cost estimates, efficiency payback, ROI, and life-cycle cost comparisons.
**Built for the field**
Real-time answers update as you type, with optional formula callouts when you need to explain the math.
Smart search plus categorized sections so you can jump straight to the right calculator.
On-device calculations mean you can keep working even when the mechanical room has no signal.
Unit preferences (°F/°C, in. w.c./Pa/kPa) persist across sessions so every calculator opens the way you expect.
Help and abbreviation references keep apprentices productive and remind veterans of rarely used constants.
Light and dark mode support for easy reading in any environment.
Core calculators are free forever. An optional one-time Pro upgrade unlocks the full suite of 40 tools.
Whether you’re sizing a replacement rooftop, double-checking duct velocities, or building a payback story for an upgrade, HVAC Calculators gets you from rule-of-thumb to defensible numbers in seconds.
Disclaimer: These tools provide quick estimates for educational and planning purposes. Always confirm final selections with manufacturer data, engineering references, and all applicable codes and standards before installation.
**What you can do**
Size comfort systems with BTU Load, AC/Furnace/Boiler/Heat Pump, ventilation load, make-up air, humidity control, and expansion valve calculators, plus an optional Manual J-lite per-surface envelope mode for defensible heating and cooling loads.
Dial in airflow with Duct Sizing (round or rectangular, 1:1 through 4:1 aspect ratios), CFM vs ACH, friction loss, fan law, grille/diffuser sizing, and static pressure tools.
Keep refrigeration and hydronics on point with refrigerant charge, line sizing, coil performance, pump head, water/gas pipe sizing, and glycol concentration helpers.
Troubleshoot faster using superheat & subcooling, temp rise/drop, dew point, wet bulb, relative humidity, moist air enthalpy, compressor efficiency, and an ASHRAE 62.1 ventilation workflow.
Run the numbers behind the job with unit conversions, wire size and Ohm’s Law, motor amperage, energy cost estimates, efficiency payback, ROI, and life-cycle cost comparisons.
**Built for the field**
Real-time answers update as you type, with optional formula callouts when you need to explain the math.
Smart search plus categorized sections so you can jump straight to the right calculator.
On-device calculations mean you can keep working even when the mechanical room has no signal.
Unit preferences (°F/°C, in. w.c./Pa/kPa) persist across sessions so every calculator opens the way you expect.
Help and abbreviation references keep apprentices productive and remind veterans of rarely used constants.
Light and dark mode support for easy reading in any environment.
Core calculators are free forever. An optional one-time Pro upgrade unlocks the full suite of 40 tools.
Whether you’re sizing a replacement rooftop, double-checking duct velocities, or building a payback story for an upgrade, HVAC Calculators gets you from rule-of-thumb to defensible numbers in seconds.
Disclaimer: These tools provide quick estimates for educational and planning purposes. Always confirm final selections with manufacturer data, engineering references, and all applicable codes and standards before installation.
Latest updates
1.2.0
Version 1.2 — Accuracy upgrade
• Manual J-lite mode in BTU Load. Per-surface envelope calculation
with walls, ceiling, floor, glazing (U-factor + SHGC), infiltration
via ACH50, and internal gains. Loads scale to ASHRAE design
temperatures for the selected climate zone. Quick Estimate stays
available for ballpark sizing.
• Duct sizing aspect ratios. Rectangular ducts now pick from
1:1, 1.5:1, 2:1, 3:1, and 4:1 — the calculator returns both
dimensions.
• Area-based window loads. Glazing in Quick Estimate now scales by
area × U·ΔT plus SHGC solar gain instead of per-window constants.
• Climate-aware design temps. Every climate zone exposes 99% winter,
1% summer, and coincident humidity ratios from ASHRAE Fundamentals.
• Tightened formulas, twenty new reference-case tests locking
psychrometric and load math to published ASHRAE values.
