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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.
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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.
TradeHub Tools was featured in Productivity (653.9k followers), Education (78.7k followers) and SaaS (42.6k followers) on Product Hunt. Together, these topics include over 215k products, making this a competitive space to launch in.
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.
Want to see how TradeHub Tools stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
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.