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SwiftSize icon

SwiftSize

Quick Heat Load Calculator
Design Comfort · Business
View on App Store ↗
★ 4.00average rating
3ratings
+0new ratings, last 7 days
—not in top charts now

Ratings breakdown

★★★★★
33%
★★★★
33%
★★★
33%
★★
0%
★
0%
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App info

Developer
Design Comfort
Category
Business, Productivity
Released
Jan 14, 2015
Version
2.1.3 (Oct 23, 2026)
Price
$9.99
Size
1.6 MB
Requires
iOS 17.0
Age rating
4+
Languages
English

In-app purchases

none
Current prices, App Store US.
🔒 Chart rank history36 chart positions recorded, every 3 hoursGet Pro access

About SwiftSize

SwiftSize is an HVAC (heating, ventilation, and air conditioning) load calculator for residences. It is designed to very quickly measure off a home's exposures "on the fly" and produce accurate results for sizing heating and air conditioning equipment. Now generates a shareable PDF Report! It is designed to minimize the on-site engineering time required by the HVAC professional. Less time engineering means more one-on-one time with the customer! HVAC heat loads can be a cumbersome and time consuming and tend to distract from time spent consulting. SwiftSize addresses this problem by allowing complete heat loads to be performed in mere minutes. If it takes you more than 10 minutes with SwiftSize you're doing something wrong! SwiftSize is not a comprehensive room-by-room heat loss/heat gain/CFM calculator. If it were it would be SlowSize! It's intended for the equipment changeout market,…
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