Best HVAC Estimating Software in 2026 — Accurate Quotes for Heating and Cooling Contractors

HVAC estimates are genuinely harder to get right than most trades. A roofing job is measured in squares. A plumbing quote is bounded by what's visible. An HVAC replacement involves load calculations, equipment sizing, refrigerant type decisions, electrical work, line set sizing, permit allowances that vary by municipality, and labor that shifts significantly depending on whether it's a simple changeout or a new-construction install. Price that job wrong in either direction and you either lose the bid or finish the job at a loss.

Most HVAC contractors manage this complexity through a combination of experience, mental math, and price books built over years. The problem is that approach doesn't scale. It doesn't catch the refrigerant pricing change that hit in Q3. It doesn't account for the new permit fee the county added in January. And it produces wildly different quotes depending on which tech is writing the estimate.

This guide covers the five most-used HVAC estimating software platforms, where each actually performs, and how AI-powered estimating is starting to change what's possible in the field.

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What HVAC Estimating Software Has to Handle

Most field service platforms were built for simpler trades and retrofitted for HVAC. The good ones address these specific requirements: Manual J load calculations — A proper HVAC replacement starts with a load calculation: square footage, ceiling height, insulation R-values, window count and orientation, local climate zone, infiltration rate. The tonnage you put in that house matters. Oversized equipment short-cycles, runs up energy bills, and leaves humidity problems. Undersized equipment can't keep up on peak days. Estimating software that skips this or treats it as optional is setting your techs up to quote the wrong equipment. Refrigerant type and phaseout costs — R-410A is in active phaseout under EPA Section 608 regulations, with production and import caps accelerating through 2026. R-32 and R-454B (Puron Advance) are the primary replacements. The price differential between refrigerant types is real, and any system you're quoting with R-410A equipment today carries future service cost implications the customer should understand. Your estimating software should support refrigerant type as a line item with current market pricing, not a static figure from two years ago. Material lists beyond the equipment — A full HVAC replacement includes more than the air handler and condenser. Line set sizing (typically 3/8" liquid / 3/4" suction for a 2-ton, scaling up from there), disconnect box, thermostat and wiring, concrete pad or wall bracket, float switch, drain line, duct connections, and whip. Techs who build estimates from memory forget items. Techs who build estimates from a comprehensive material template don't. Labor rate differentiation by job type — Changeout labor on an existing system in an accessible location is different from new-construction rough-in. An add-on system in a finished basement is different from both. A commercial rooftop unit is different from residential entirely. HVAC estimating software that has a single labor rate fails these distinctions. The best platforms let you configure labor rates by job type, access difficulty, and system class. Permit allowances by municipality — Permit fees for HVAC work range from $75 in rural counties to $400+ in dense metros. Some jurisdictions require a licensed mechanical contractor of record; others accept a homeowner's permit. This isn't the software's job to look up per job, but your platform should support a permit line item with a configurable default you can override per project based on the city. Flat-rate vs. time-and-material — Residential service HVAC largely runs flat-rate. Commercial HVAC, specialty installs, and ductwork reconfigurations often run time-and-material. A platform that forces you to pick one mode across the board creates friction for shops that do both.

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Top HVAC Estimating Software in 2026

1. ServiceTitan — Most Complete Platform Price: ~$398–$698/month base + $19–$35/user/month | Best for: HVAC companies doing $1M+ with multiple techs

ServiceTitan is the enterprise standard for HVAC companies at scale. The estimating module handles flat-rate price books with serious depth: separate labor rates by job type, equipment categories, membership pricing tiers, and good-better-best option packages that let techs present three system levels rather than a single quote. The dispatch board is built for high-volume service calls — technicians see customer history, equipment data, and service history before they pull into the driveway.

The service agreement module is strong, which matters for HVAC shops. Annual maintenance agreements on heating and cooling equipment are high-margin, recurring revenue. ServiceTitan handles agreement enrollment, reminder scheduling, agreement renewal, and pricing in one place. Shops that run active maintenance programs should price this into their ServiceTitan ROI calculation.

The equipment database pulls AHRI-certified equipment specifications, which means techs can look up matched systems (air handler + condenser combinations that meet SEER ratings) rather than guessing at compatibility. Where it falls short: The cost is hard to justify under $750K revenue, and onboarding takes 2–3 months even for companies with clean data. The estimating features are powerful but require significant configuration investment before they function well. New HVAC companies or solo operators will find the cost and setup burden disproportionate to their needs.

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2. FieldEdge — Best Flat-Rate Price Book for HVAC Price: ~$200–$400/month (custom pricing) | Best for: Residential service HVAC shops running strict flat-rate pricing

FieldEdge was purpose-built for plumbing and HVAC, and the estimating module shows it. The price book structure reflects how HVAC service actually works: repair codes organized by system type, maintenance task templates, equipment replacement options with parts and labor bundled into a single flat-rate price. When a tech selects "condenser fan motor replacement — 3-ton residential" from the tablet interface, they get a quote that includes the part, labor, refrigerant check, and filter with margins already baked in.

The QuickBooks integration is reliable, which simplifies back-office operations for shops where the bookkeeper manages financials separately from field operations. Service agreement management is solid — FieldEdge handles agreement enrollment, scheduling, and renewal tracking without requiring a second platform. Where it falls short: The UI is dated compared to Jobber or Ontrakt. The mobile app works but feels like it was designed several years ago and hasn't been significantly modernized. Pricing is not publicly listed, requires a sales conversation, and typically involves an annual contract — budget for an evaluation period before you can commit. Shops that need to be up and running in a week won't get there with FieldEdge.

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3. Jobber — Best for Growing HVAC Companies Price: $69/month (Core, 1 user) | $169/month (Connect) | $349/month (Grow) | Best for: 1–15 tech HVAC companies

Jobber handles the core HVAC workflow cleanly without the enterprise complexity of ServiceTitan. Job requests come in through a client hub, techs see their schedule on mobile, estimates are created on-site, customers approve from a phone link, and invoices are sent with payment built in. The client communication tools — automated appointment reminders, follow-up requests, job completion notifications — are among the best in this price range.

For HVAC shops under $750K revenue, Jobber typically delivers better ROI than anything at a higher price point. The setup is fast — most shops are functional within a week — and the Quickbooks sync means the financial side doesn't require a major workflow change. Where it falls short: The flat-rate price book is limited. You can create line items and reuse them, but building a true HVAC-specific price book with load calculation inputs, equipment sizing, and comprehensive material lists requires significant manual setup that other platforms handle more natively. Jobber also doesn't have an AHRI equipment database or manufacturer-specific pricing integration. For shops where pricing precision and flat-rate discipline are non-negotiable, this gap is real.

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4. Jobnimbus — Popular in HVAC, Best for Service + Roofing Crossover Price: ~$149–$399/month | Best for: HVAC companies that also do roofing, or shops needing strong CRM features

Jobnimbus started in roofing and expanded into HVAC, and the platform reflects both origins. The CRM features are stronger than most competitors — lead tracking, pipeline stages, automated follow-ups, and reporting on lead sources. For HVAC companies that spend heavily on Angi, Thumbtack, or Google Ads and want to close a higher percentage of their leads, Jobnimbus gives better pipeline visibility than Jobber or FieldEdge.

The estimating module uses a template system that works reasonably well for common HVAC replacements. The workflow from estimate approval to job scheduling is smooth, and the financing integration (GreenSky, Service Finance) is a meaningful feature for shops where equipment financing helps close larger system replacements. Where it falls short: HVAC estimating depth is weaker than FieldEdge. The price book doesn't have the flat-rate structure that HVAC service shops need, and material list management for full system installations requires manual work. Jobnimbus is a better fit for HVAC companies that are sales-process-heavy than for shops where technical estimating accuracy is the primary constraint.

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5. Ontrakt — Best AI-Powered HVAC Estimating Price: Free trial at ontrakt.com/sign-up | Best for: HVAC shops where estimate turnaround time and field accuracy are the bottleneck

Ontrakt approaches HVAC estimating from a different angle. Rather than a price book that techs navigate through on a tablet, the platform uses AI to analyze photos of an existing system and generate a structured replacement estimate automatically — including equipment, materials, labor, and permit allowance.

Here is what that looks like in practice:

A tech arrives at a residential HVAC replacement call. They photograph the existing air handler (showing the brand, model, coil configuration, and approximate age from the data plate), the condenser outside (model, tonnage, refrigerant type, and visible condition), the existing line set and disconnect, and the ductwork connections at the air handler. They upload those photos to Ontrakt from their phone.

The AI reads the equipment brand and model number to identify the current tonnage and refrigerant type. It estimates system age from the manufacturing date code, flags visible issues (corroded line set insulation, undersized disconnect, cracked condensate drain pan), and cross-references the home's square footage against the existing system capacity to identify whether the current tonnage is appropriate or if a load calculation suggests a sizing change.

The estimate that comes back includes: replacement equipment cost at current distributor pricing for the correct tonnage and refrigerant type (R-410A vs. R-454B depending on availability and customer preference), line set replacement if the existing set is too small or degraded, new disconnect at code-compliant amperage, thermostat, pad or bracket if needed, drain line, estimated labor hours differentiated between the equipment installation and any electrical or ductwork modifications, and a configurable permit allowance for the jurisdiction.

A complete HVAC replacement estimate that would take an experienced tech 20–30 minutes to build from scratch in a traditional platform takes under 3 minutes with Ontrakt's photo analysis.

The client-facing workflow is also designed for field use. Customers receive a link, review the line-item estimate on their phone, sign electronically, and pay a deposit without creating an account or downloading anything. For HVAC shops where same-day estimate approval is the goal, this reduces the friction that kills jobs between the visit and the follow-up call. Where it falls short: Ontrakt is newer than the platforms above and doesn't yet have the depth of service agreement management or dispatch optimization that FieldEdge or ServiceTitan offer. Shops with large service agreement programs or complex multi-tech dispatch needs may still want to pair Ontrakt with a dedicated scheduling platform. But for residential HVAC replacement and service call estimating, the speed and accuracy advantages are real.

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Comparison Table

| Platform | Starting Price | Flat-Rate Pricing | AI Photo Estimates | Equipment Database | Service Agreements | Best For |

|---|---|---|---|---|---|---|

| ServiceTitan | ~$400/month | Excellent | No | AHRI-certified | Excellent | $1M+ HVAC companies |

| FieldEdge | ~$200/month | Excellent | No | Partial | Strong | Flat-rate service shops |

| Jobber | $169/month | Basic | No | No | Basic | Growing shops under $750K |

| Jobnimbus | ~$149/month | Basic | No | No | Basic | Sales-focused HVAC shops |

| Ontrakt | Free trial | In development | Yes (AI) | Via AI recognition | In development | Fast field estimates |

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The Refrigerant Transition Problem

R-410A has been the dominant residential HVAC refrigerant for over two decades. The EPA's phasedown under AIM Act rules cuts R-410A production and import allowances substantially through 2025 and 2026. Equipment manufacturers are transitioning to R-32 and R-454B (classified as A2L — mildly flammable). Many HVAC contractors are now fielding replacement quotes where the equipment choice involves a refrigerant transition decision the customer doesn't understand.

Your estimating software needs to account for this in several ways. First, R-410A equipment still available in distributor inventory may carry price volatility as supply tightens — your price book needs to reflect current distributor pricing, not a figure from 18 months ago. Second, A2L refrigerant equipment (R-32, R-454B) requires some additional handling and safety equipment considerations. Third, customers asking about "future-proofing" their system should be presented with honest information about what refrigerant transition means for long-term service costs.

None of the platforms reviewed above handle refrigerant transition as an explicit estimating feature. This is currently a gap every HVAC shop manages through tech training and proposal language rather than software automation.

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Load Calculation: The Estimating Step Most Shops Skip

Manual J is the ACCA-approved method for residential HVAC load calculations. It accounts for square footage, ceiling height, insulation values, window area and solar orientation, infiltration rate, occupancy, and local design temperatures. Done correctly, it tells you what tonnage the structure actually requires — not what the previous contractor installed.

Most HVAC estimating software treats Manual J as an external calculation rather than an integrated feature. Techs use separate tools (ACCA-approved software, online calculators, or manual tables) and then enter the result into their estimating platform. This is a workflow gap — load calculation and equipment selection should flow directly into the estimate without a manual handoff step.

If load calculation accuracy matters for your business (new construction, commercial, or high-end residential), evaluate whether your estimating platform has a native load calculation module or a clean integration with a tool like Wrightsoft or Elite Software. Most platforms reviewed here don't.

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How to Choose by Business Type Solo HVAC tech or startup company: Jobber at the Core or Connect tier gives you scheduling, estimates, invoicing, and payment in one platform at a price that works from day one. If your primary constraint is estimate speed in the field, test Ontrakt's AI estimating — it's free and worth evaluating against your most common job types before deciding on a platform. Residential service company doing $300K–$750K: Jobber at the Grow tier handles most needs. If flat-rate pricing discipline is critical to your margins, evaluate FieldEdge — the price book depth is meaningfully better. If pipeline visibility and lead conversion are where you're losing money, Jobnimbus is worth a look. Residential service company doing $750K–$2M: The choice is typically between FieldEdge (if flat-rate service is the core business) and ServiceTitan (if you want one platform for everything and can invest in the onboarding). Both are significant investments. Both reward shops that use them fully. HVAC company doing $2M+: ServiceTitan is the standard choice. The cost is justified by the platform's depth, and most companies at this scale are already running it or evaluating it. The main alternative is a combination approach: ServiceTitan for dispatch and agreements, Ontrakt for AI-assisted estimating on complex replacements. Replacement-heavy shop where estimate turnaround is the bottleneck: Ontrakt's photo-to-estimate workflow is worth testing regardless of what else you're running. If techs are spending 20–30 minutes building estimates on-site and customers are waiting, or if estimates are being built the next day from memory, AI estimating directly addresses that problem.

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Start Estimating Faster — Free Trial

Ontrakt's AI estimating is purpose-built for field contractors. Photograph the existing system, get a complete line-item replacement estimate in minutes, and send it for approval before you leave the driveway. No price book setup. No manual load table lookups. No estimate written the next morning from a photo on your phone.

Test it on your most common HVAC replacement scenarios — system changeouts, add-on systems, ductwork replacements — and see if the accuracy and turnaround hold up against how you're currently doing it. Start your free trial at ontrakt.com/sign-up