# LoadCalcStack Independent directory of Manual J and ACCA-approved load-calculation software for HVAC contractors. Published pricing, tradeoffs, and cited sources. Not consumer AC repair. Not a generic HVAC FSM directory. Written for HVAC contractors (career-changers and new owners) shopping Manual J / load-calc tools. Independent reviews. We do not run an HVAC company. Author: LoadCalcStack editorial team - HTML: https://www.loadcalcstack.com/ - Markdown: https://www.loadcalcstack.com/index.md - Directory: https://www.loadcalcstack.com/directory - Guides: https://www.loadcalcstack.com/guides - ACCA approved software (authority): https://www.acca.org/standards/approved-software - Methodology: https://www.loadcalcstack.com/methodology - Affiliate disclosure: https://www.loadcalcstack.com/affiliate-disclosure - Contribute: https://www.loadcalcstack.com/contribute - llms.txt: https://www.loadcalcstack.com/llms.txt ## Seed vendors ### Conduit Tech iPad-oriented HVAC load-calc and sales platform listed on ACCA's approved software page. Pricing is not published; you request a quote from the vendor. - Pricing: Not published. Pricing page directs you to request a quote. No public dollar amount on vendor pages retrieved 2026-09-15. - Billing model: Subscription (annual contract; monthly billing mentioned on solutions pages) - Markdown: https://www.loadcalcstack.com/vendors/conduit-tech.md ### Cool Calc Web-based Manual J, S, and D design suite with published unlimited subscription pricing and LiDAR scan options. - Pricing: Unlimited Pro $50/user/mo. Also lists $250/user/mo suite plan and $45/project. Retrieved 2026-09-15. - Billing model: Per user / month (plus per-project option) - Markdown: https://www.loadcalcstack.com/vendors/cool-calc.md ### Elite Software (Rhvac) ACCA-approved Rhvac residential load, duct, and equipment selection software with published desktop and online prices. - Pricing: Rhvac 10 desktop $599 permanent. Rhvac Online $239/year (or $159/year if you already have Rhvac 10). Manual J Calculator Online $149/year. Retrieved 2026-09-15. - Billing model: Perpetual desktop and/or annual online subscription - Markdown: https://www.loadcalcstack.com/vendors/elite-software.md ### Wrightsoft Windows-based Right-Suite Universal (RSU) residential package with published yearly subscription pricing covering Manual J/D and related design modules. - Pricing: RSU Residential Package $900/year (USA). Canada $925/year; Combined USA & Canada $1,125/year. Retrieved 2026-09-15. - Billing model: Annual subscription (USD) - Markdown: https://www.loadcalcstack.com/vendors/wrightsoft.md ## Guides - What is Manual J and ACCA-approved load-calc software? — Plain-language primer on ACCA Manual J residential load calculations and why contractors check ACCA's approved software list. No invented stats. ## Comparisons - Cool Calc vs Wrightsoft — Side-by-side look at published pricing, platform, and ACCA Manual J positioning for Cool Calc and Wrightsoft RSU. No ranked winner. - Cool Calc vs Elite Software (Rhvac) — Side-by-side look at published pricing, platform, and ACCA Manual J positioning for Cool Calc and Elite Rhvac. No ranked winner. - Wrightsoft vs Elite Software (Rhvac) — Side-by-side look at published pricing, platform, and ACCA Manual J positioning for Wrightsoft RSU and Elite Rhvac. No ranked winner. ## How to cite Cite LoadCalcStack pages with the canonical URL and the date on the page. Do not invent prices, field tests, or a named individual author. --- # Conduit Tech iPad-oriented HVAC load-calc and sales platform listed on ACCA's approved software page. Pricing is not published; you request a quote from the vendor. - Canonical: https://www.loadcalcstack.com/vendors/conduit-tech - Website: https://getconduit.com/ - Pricing (verified Tue Sep 15 2026 00:00:00 GMT+0000 (Coordinated Universal Time)): Not published. Pricing page directs you to request a quote. No public dollar amount on vendor pages retrieved 2026-09-15. - Billing model: Subscription (annual contract; monthly billing mentioned on solutions pages) - Solo / new-owner fit: Possible for independents; confirm device requirements and quote - Pricing note: The official pricing page does not publish a dollar amount. We do not treat third-party forum quotes as list price. - Pricing status: Pricing is not published; you request a quote from the vendor. - Listed on ACCA approved software page (as retrieved; verify live). ## Best for - Contractors evaluating on-site LiDAR load calcs during sales calls - Shops that want ACCA Manual J reports as a sales/presentation tool - Teams willing to book a demo for pricing ## Standout features - ACCA Manual J certified calculations claimed on product pages - On-site load calculations and floor plans marketed for sales calls - Listed on ACCA approved software (LiDAR-capable devices note) ## Tradeoffs - Pricing is not published on the public pricing page; you request a quote from the vendor - Device / iPad requirements should be confirmed with sales - Bundled sales/CRM positioning may be more than a pure load-calc need ## Sources - [Conduit Tech pricing](https://getconduit.com/pricing) (retrieved 2026-09-15) - [Conduit Tech load calculations](https://getconduit.com/hvac-software/load-calculations) (retrieved 2026-09-15) - [ACCA approved software list](https://www.acca.org/standards/approved-software) (retrieved 2026-09-15) ## How to cite Cite LoadCalcStack with the canonical URL and the date on the page. Do not invent prices, field tests, star ratings, or a named individual author. Markdown: https://www.loadcalcstack.com/vendors/conduit-tech.md --- # Cool Calc Web-based Manual J, S, and D design suite with published unlimited subscription pricing and LiDAR scan options. - Canonical: https://www.loadcalcstack.com/vendors/cool-calc - Website: https://www.coolcalc.com/ - Pricing (verified Tue Sep 15 2026 00:00:00 GMT+0000 (Coordinated Universal Time)): Unlimited Pro $50/user/mo. Also lists $250/user/mo suite plan and $45/project. Retrieved 2026-09-15. - Billing model: Per user / month (plus per-project option) - Solo / new-owner fit: Strong for solo / new owners who want published monthly pricing - Pricing note: Homepage lists Unlimited Subscription Pricing at $50/user/mo for Manual J/S/D plus CoolCalc Scan LiDAR app. A higher $250/user/mo plan and $45/project option are also listed. Try-before-you-buy flow stated (pay to unlock results). - Listed on ACCA approved software page (as retrieved; verify live). ## Best for - Contractors who want a published monthly floor instead of annual desktop licenses - Shops that prefer browser access across devices - Teams evaluating LiDAR / floor-plan / satellite capture workflows ## Standout features - Published $50/user/mo unlimited Manual J, S, and D on the homepage - Web browser access claimed across Mac, PC, phone, or tablet - Cool Calc Scan LiDAR app listed on the Pro plan card ## Tradeoffs - Results unlock / paywall model differs from perpetual desktop licenses - Higher $250/user/mo plan features (CRM, API) sit above the Pro floor - Not a full field-service management (FSM) platform ## Sources - [Cool Calc homepage (pricing)](https://www.coolcalc.com/) (retrieved 2026-09-15) - [ACCA approved software list](https://www.acca.org/standards/approved-software) (retrieved 2026-09-15) ## How to cite Cite LoadCalcStack with the canonical URL and the date on the page. Do not invent prices, field tests, star ratings, or a named individual author. Markdown: https://www.loadcalcstack.com/vendors/cool-calc.md --- # Elite Software (Rhvac) ACCA-approved Rhvac residential load, duct, and equipment selection software with published desktop and online prices. - Canonical: https://www.loadcalcstack.com/vendors/elite-software - Website: https://www.elitesoft.com/ - Pricing (verified Tue Sep 15 2026 00:00:00 GMT+0000 (Coordinated Universal Time)): Rhvac 10 desktop $599 permanent. Rhvac Online $239/year (or $159/year if you already have Rhvac 10). Manual J Calculator Online $149/year. Retrieved 2026-09-15. - Billing model: Perpetual desktop and/or annual online subscription - Solo / new-owner fit: Strong for buyers who want a published permanent license or low annual online option - Pricing note: Rhvac product page purchase table lists desktop and online SKUs with dollar amounts. Combo with Drawing Board listed at $999. - Listed on ACCA approved software page (as retrieved; verify live). ## Best for - Contractors who prefer a one-time desktop license floor ($599) - Buyers comparing annual online Manual J options ($149–$239/year) - Shops that want Manual J, D, and S in one Rhvac product family ## Standout features - Published Rhvac 10 desktop permanent price $599 - Published Rhvac Online annual prices $239 / $159 - ACCA-approved Manual J, D, and S claims on the product page ## Tradeoffs - Desktop drawing modules (Drawing Board / Graphic Manual D) cost extra or come in a $999 combo - Online vs desktop feature parity differs (vendor documents graphic limits online) - Not a LiDAR-first sales-presentation tool like some newer entrants ## Sources - [Elite Software Rhvac product page](https://www.elitesoft.com/web/hvacr/elite_rhvacw_info.html) (retrieved 2026-09-15) - [Rhvac order options](https://www.elitesoft.com/web/prices/rhvacorderoptions.html) (retrieved 2026-09-15) - [ACCA approved software list](https://www.acca.org/standards/approved-software) (retrieved 2026-09-15) ## How to cite Cite LoadCalcStack with the canonical URL and the date on the page. Do not invent prices, field tests, star ratings, or a named individual author. Markdown: https://www.loadcalcstack.com/vendors/elite-software.md --- # Wrightsoft Windows-based Right-Suite Universal (RSU) residential package with published yearly subscription pricing covering Manual J/D and related design modules. - Canonical: https://www.loadcalcstack.com/vendors/wrightsoft - Website: https://www.wrightsoft.com/ - Pricing (verified Tue Sep 15 2026 00:00:00 GMT+0000 (Coordinated Universal Time)): RSU Residential Package $900/year (USA). Canada $925/year; Combined USA & Canada $1,125/year. Retrieved 2026-09-15. - Billing model: Annual subscription (USD) - Solo / new-owner fit: Fit depends on need for full Windows design / permitting package - Pricing note: Product page lists Yearly subscription USD $900 for Wrightsoft RSU Residential Package (USA). Canada and Combined USA & Canada prices also published on the same page. - Listed on ACCA approved software page (as retrieved; verify live). ## Best for - Contractors who need a full residential design and permitting package on Windows - Shops that want Manual J and Manual D in one Right-Suite Universal package - Teams linking load data into energy / code tools listed by the vendor ## Standout features - Published $900/year USA residential package price - Modules listed include Right-J (ACCA) and Right-D (ACCA) - Third-party energy/code link claims (Energy Gauge, RESCheck, REM/Rate, and others) ## Tradeoffs - Windows desktop package; not a browser-first SaaS floor like Cool Calc's $50/user/mo - Annual $900 is a larger up-front commitment than monthly web tools - Learning curve and support experience vary by shop (third-party comments; not a field test) ## Sources - [Wrightsoft RSU Residential Package](https://www.wrightsoft.com/product/wrightsoft-residential/) (retrieved 2026-09-15) - [ACCA approved software list](https://www.acca.org/standards/approved-software) (retrieved 2026-09-15) ## How to cite Cite LoadCalcStack with the canonical URL and the date on the page. Do not invent prices, field tests, star ratings, or a named individual author. Markdown: https://www.loadcalcstack.com/vendors/wrightsoft.md --- --- Full text dump for agents. Prefer HTML/Markdown canonical pages for citations.