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TradeHub Tools
Free NEC Electrical and HVAC Field Calculators
Free field-use electrical and HVAC calculators for electricians, HVAC techs, contractors, and apprentices. TradeHub Tools covers NEC load, breaker sizing, wire size, ampacity, EV charger circuits, voltage drop, conduit fill, box fill, BTU load, Manual S, and Manual D workflows, with source-scope notes, conservative result boundaries, and print/share output for field use.
Hi - we built TradeHub Tools as a free field-use calculator suite for electricians, HVAC techs, contractors, apprentices, and technical training use.
The goal is practical job site reference, not generic calculator output. TradeHub covers electrical workflows like NEC load calculation, breaker sizing, wire size, ampacity, EV charger circuits, voltage drop, conduit fill, and box fill. It also includes HVAC screening tools for BTU load, Manual S, and Manual D workflows.
A few things we focused on:
• Free access with no login • Source-scope notes on calculator results • Conservative result boundaries instead of pretending to give final approval • Print / save / share output for field notes • Mobile-first layouts for jobsite use
I’d appreciate feedback from anyone in electrical, HVAC, construction, apprenticeship training, or technical education.
About TradeHub Tools on Product Hunt
“Free NEC Electrical and HVAC Field Calculators”
TradeHub Tools was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #80 on the daily leaderboard. Free field-use electrical and HVAC calculators for electricians, HVAC techs, contractors, and apprentices. TradeHub Tools covers NEC load, breaker sizing, wire size, ampacity, EV charger circuits, voltage drop, conduit fill, box fill, BTU load, Manual S, and Manual D workflows, with source-scope notes, conservative result boundaries, and print/share output for field use.
On the analytics side, TradeHub Tools competes within Productivity, Education and SaaS — topics that collectively have 775.1k followers on Product Hunt. The dashboard above tracks how TradeHub Tools performed against the three products that launched closest to it on the same day.
Who hunted TradeHub Tools?
TradeHub Tools was hunted by TradeHub. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of TradeHub Tools including community comment highlights and product details, visit the product overview.
TradeHub
Hi - we built TradeHub Tools as a free field-use calculator suite for electricians, HVAC techs, contractors, apprentices, and technical training use.
The goal is practical job site reference, not generic calculator output. TradeHub covers electrical workflows like NEC load calculation, breaker sizing, wire size, ampacity, EV charger circuits, voltage drop, conduit fill, and box fill. It also includes HVAC screening tools for BTU load, Manual S, and Manual D workflows.
A few things we focused on:
• Free access with no login
• Source-scope notes on calculator results
• Conservative result boundaries instead of pretending to give final approval
• Print / save / share output for field notes
• Mobile-first layouts for jobsite use
I’d appreciate feedback from anyone in electrical, HVAC, construction, apprenticeship training, or technical education.