HVAC estimating is really two separate problems: getting the load calculation right, and presenting the proposal in a way that closes the sale. Dedicated Manual J load calculation tools like Cool Calc and Wrightsoft's Right-J, both reported in the roughly $50 to $99 per month range, exist specifically to produce ACCA-compliant sizing so equipment is neither oversized nor undersized. Turning that calculation into a closing tool is a separate job, one that ServiceTitan and QuoteIQ Pro handle through good-better-best proposal presentation tied to preloaded pricing. Most successful HVAC shops end up running one tool for each job rather than expecting either to do both well.
Key takeaways
- Cool Calc Pro is commonly reported at $39 to $99 per month, and Wrightsoft's Right-J at roughly $695 per year, both purpose-built for ACCA-compliant Manual J load calculations rather than proposal presentation.
- ServiceTitan integrates load calculation results directly into good-better-best proposals with preloaded pricing and financing options, but does not publish self-serve pricing.
- QuoteIQ Pro at $149.99 per month includes native good-better-best tiered proposal presentation, the same feature that drives higher average tickets in plumbing invoicing.
- An inaccurate load calculation is the single most expensive estimating mistake in HVAC, since an oversized or undersized system causes callback and comfort complaints for years after the sale.
- ACCA-compliant load calculation software uses current climate data and certified algorithms, which matters for code compliance in jurisdictions that require Manual J documentation.
HVAC estimating software compared at a glance
| Platform | Solves | Rating | Starting price | Standout |
|---|
| Cool Calc Pro | Manual J load calculation | Established in the trade | $39 to $99/mo, reported | Purpose-built ACCA-compliant sizing |
| Wrightsoft Right-J | Manual J load calculation | Long-standing industry standard | ~$695/yr, reported | Deep, code-compliant calculation depth |
| ServiceTitan | Load-to-proposal, all-in-one | 4.4 from 300+ reviews | Quote only, not published | Load results feed directly into proposals |
| QuoteIQ Pro | Good-better-best proposal closing | Newer, growing base | $149.99/mo | Native tiered proposal presentation |
| Jobber | Basic quoting for smaller jobs | 4.6 from 1,473 Capterra reviews | $49/mo, 1 user | Fast quotes, not load-calc capable |
| HVACBase | Manual J/S/D plus office sync | Newer entrant | Not widely published | Field and office calculation sync |
We split this roundup along the line that actually matters: dedicated Manual J load calculation software built for sizing accuracy, versus proposal and closing tools built for good-better-best presentation. Some platforms genuinely bridge both, and we say so, but treating a proposal tool as a substitute for real load calculation, or vice versa, is a mistake worth avoiding before you buy.
Cool Calc and Wrightsoft: the load calculation specialists
Cool Calc Pro is reported in the $39 to $99 per month range and produces ACCA-compliant Manual J calculations using current climate data, the standard most jurisdictions require for permit documentation on equipment replacement. Wrightsoft's Right-J, the more established name in the category, runs approximately $695 per year based on third-party reporting, with the fuller Right-Suite Universal package reported around $200 per month for shops needing duct design and additional modules beyond core load calculation.
Best for: HVAC shops that want a dedicated, code-compliant load calculation tool independent of their quoting platform.
- Purpose-built for sizing accuracy rather than sales presentation.
- ACCA-compliant output accepted for permit and code documentation in most jurisdictions.
- Neither is a closing tool on its own; results still need to flow into a proposal.
- Vendor pricing is not consistently published, so figures here are third-party estimates rather than confirmed numbers.
ServiceTitan: load calculation feeding directly into the close
ServiceTitan integrates with load calculation tools and converts results directly into a proposal using preloaded pricing, equipment catalogs and financing options, closing the gap between an accurate sizing calculation and a sale in one workflow. It publishes no pricing, and Capterra lists it around 4.4 out of 5 from roughly 300 reviews.
Best for: growing HVAC businesses wanting load calculation, estimating and closing in one connected system.
See the full ServiceTitan review for the real cost picture.
QuoteIQ Pro at $149.99 per month brings the same tiered good-better-best proposal presentation to HVAC that drives higher average tickets in flat-rate plumbing pricing. A technician presenting three equipment options on a tablet at the point of sale closes more replacement jobs than one quoting a single system, a pattern consistent across the home services industry.
Best for: HVAC shops where proposal presentation quality, not load calculation depth, is the bigger revenue opportunity.
Jobber and HVACBase for smaller or newer operations
Jobber's $49 per month Core plan handles fast quotes for smaller service jobs but has no load calculation capability, making it a reasonable choice only for shops that either do not need Manual J documentation or run calculations in a separate dedicated tool. HVACBase is a newer entrant combining Manual J, S and D calculations with field and office sync, worth evaluating if keeping calculation and scheduling in one system matters more than using the most established dedicated tools.
Why an inaccurate load calculation is the most expensive estimating mistake
An oversized system short-cycles, wastes energy, and struggles with humidity control, generating callback complaints for years after installation. An undersized system runs constantly and never satisfies the homeowner in extreme weather. Both mistakes trace back to a load calculation that was guessed, estimated from a rule of thumb, or skipped entirely rather than run properly through ACCA-compliant software. The cost of the calculation tool itself, at $40 to $100 a month, is trivial compared to the cost of replacing an improperly sized system under warranty or losing a customer's trust after a bad install.
Choose based on which problem you actually have
- Choose Cool Calc or Wrightsoft if load calculation accuracy and code compliance are your priority, independent of your quoting platform.
- Choose ServiceTitan if you want load calculation results flowing directly into a closing proposal in one connected system.
- Choose QuoteIQ Pro if your bigger opportunity is proposal presentation, not calculation depth.
- Choose Jobber only if you run load calculations separately and just need fast quoting on top.
Once the proposal closes, the next step is scheduling the install and getting it invoiced correctly; see HVAC software 2026 for the wider stack. If the ticket size on a full system replacement needs a payment plan to close, HVAC contractor financing programs covers the options, and best estimating software for contractors gives the trade-agnostic view of the category.
A load calculation is also the foundation of an honest sales conversation, not just a code requirement. Presenting a homeowner with a Manual J printout alongside the good-better-best options gives the proposal real credibility, since it shows the sizing was calculated rather than guessed, which matters more to a skeptical homeowner comparing three contractor quotes than any single feature of the software itself. Pairing that credibility with financing options at the same moment, rather than as an afterthought after the homeowner has already balked at the price, is where how to pitch financing to homeowners becomes directly relevant to how you present the load calculation and the proposal together.
How we put this together
Pricing for Cool Calc and Wrightsoft is drawn from multiple independent third-party sources reporting consistent ranges, since neither vendor's own pricing page was reachable for direct verification at the time of writing; we flag this explicitly rather than presenting the figures as vendor-confirmed. QuoteIQ pricing was read directly from its own pricing page. ServiceTitan does not publish self-serve pricing. Ratings and review counts come from Capterra listings in August 2026. Confirm current pricing directly with any vendor before buying.
Frequently asked questions
What is the difference between HVAC load calculation software and estimating software?
Load calculation software like Cool Calc or Wrightsoft's Right-J determines the correct equipment size for a space using ACCA-compliant methods. Estimating and proposal software like QuoteIQ Pro or ServiceTitan turns that sizing decision into a priced, presentable quote. They solve different problems and many shops use one tool for each.
How much does HVAC load calculation software cost?
Cool Calc Pro is commonly reported at $39 to $99 per month, and Wrightsoft's Right-J at roughly $695 per year, though neither vendor's pricing was directly verifiable at the time of writing, so treat these as third-party estimates.
Do I need Manual J software or can I estimate equipment size by rule of thumb?
Many jurisdictions require ACCA-compliant Manual J documentation for permits on equipment replacement, and rule-of-thumb sizing is a leading cause of the oversized and undersized systems that generate callback complaints. Dedicated load calculation software is worth the modest monthly cost to avoid both problems.
Does ServiceTitan include Manual J load calculation?
ServiceTitan integrates with dedicated load calculation tools and converts the results directly into a priced proposal, rather than performing the ACCA-compliant calculation itself as a standalone feature.
What is good-better-best proposal presentation and why does it matter for HVAC?
It means presenting three tiered equipment and service options rather than a single quote, a technique consistently shown to raise average ticket size across home services. QuoteIQ Pro and ServiceTitan both build this presentation style in natively.
Can I use Jobber for HVAC estimating?
Jobber handles fast quoting for smaller jobs well but has no Manual J load calculation capability, so it works best paired with a separate dedicated load calculation tool rather than as a standalone HVAC estimating solution.
