FlatRateKit
Free HVAC flat-rate pricing calculators for small shops
What it does
FlatRateKit helps small residential HVAC contractors build flat-rate service prices from their own labor, parts, overhead, markup, and margin assumptions. It includes free labor-rate, profit-margin, and service-pricing calculators plus downloadable price-book templates. It is intentionally not a CRM, dispatch system, or national price database.
FlatRateKit is a free HVAC pricing toolkit for small contractors using their own labor, parts, overhead, markup, and margin assumptions.
No blank spreadsheets. No demo calls. No setup fees. Start with simple service templates, then price every job using your own labor rate, costs, markup, and margin rules. Include burden, vehicles, overhead, and billable utilization. Turn labor, parts, overhead, and margin into a clear HVAC flat rate price. Estimate burdened labor cost and billable shop rate before you price the job. Check gross margin, markup, and profit before a price goes live. Start from an Excel/CSV template for your HVAC price book and service price list. If you need a downloadable spreadsheet, start with the HVAC flat rate pricing template. If you need one approved service price, use the calculator. If technicians…from flatratekit.com
Does the same job
all alternatives →



- FOFlexprice: Open-Source Usage-Based Billing Toolkit2025 · ▲7
Hey HN, I’am Koshima, co-founder of Flexprice (https://flexprice.io/). Flexprice is an open source monetization platform for AI & Agentic companies. You can build usage-based, credit-based, or hybrid pricing models with full control. Usage-based billing works on paper, but breaks fast in production: (1) High-volume data (e.g., 10k API calls/sec from AI inferences) breaks naive pipelines, dropping events and causing underbilling or customer complaints. (2) Backfilling missing events or retroactive discounts screws up invoices, forcing 3 AM log stitching to avoid revenue…

More commerce this month
the category →

Compare your startup equity grant for free.
Commerce · 26d ago · equitybee.com
Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io


- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io


I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com