Estimate HVAC work without losing margin
OneEstimate builds HVAC estimates with ready line items for equipment, ductwork, refrigerant and diffusers, measures ductwork on the plan, and prices from equipment and labor costs you update in one click.
Create your first estimate freeStart plan from $19/mo · No credit card · Runs in your browser
HVAC doesn’t estimate like framing a wall
The cost is in the equipment and the ductwork. Here is what OneEstimate fixes.
Equipment prices move faster than your bid
Condensers, air handlers and mini-splits change price. Update the equipment cost once and every estimate uses the new value.
Measuring ductwork by hand is painful
Calculating linear feet of duct, diffusers and grilles on a PDF takes hours. Measure ductwork on the plan and count diffusers in minutes.
Everyone prices labor differently
Labor per installed ton or per foot of duct varies by tech. Standardized assemblies let you bid consistently and defensibly.
Unclear proposals for the client
A breakdown by equipment, ductwork and startup, in a branded PDF, closes better than a lump sum.
See OneEstimate in action
The same software thousands of builders use, with a workflow built for your trade.
Ready HVAC assemblies
Equipment (mini-split, VRF, chillers, air handlers), ductwork, insulation, refrigerant, diffusers and grilles — with material, labor and productivity, editable.
On-screen takeoff
Upload the plan as a PDF or image, calibrate the scale, then measure duct runs and count diffusers and grilles. Everything feeds its line item.
Equipment costs you control
Update the cost of condensers, air handlers or copper line sets in your database and every estimate recalculates.
Built for HVAC work
Everything an HVAC contractor needs to bid fast and protect margin.
AI that suggests line items
Describe the scope ("cooling for a 2,000 sq ft office") and AI proposes equipment, ductwork and accessories to start fast.
Breakdown by zone or equipment
Organize by conditioned zone, floor or unit. Total clarity in the proposal.
Export branded PDF & Excel
Send a professional proposal with your logo in one click, or export to Excel.
From plan to proposal in 4 steps
The workflow HVAC contractors use after leaving the spreadsheet.
1. Upload the plan
Load the mechanical plan as a PDF or image and calibrate the scale.
2. Measure & count
Trace ductwork and count diffusers, grilles and units on the drawing.
3. Build the estimate
Quantities drop into ready assemblies; adjust equipment prices and labor units.
4. Send the proposal
Export a branded PDF with a breakdown by zone or unit. Ready to win.
A bidding day: HVAC contractor with OneEstimate
It’s time to bid the HVAC on a retail center. The contractor uploads the plan to OneEstimate and measures duct runs on screen; linear footage totals by system. Diffusers, grilles and units get counted with a click, and each one pulls its assembly of material, labor and accessories. Once the takeoff is closed, the quantities and cost are ready to send.
- Duct runs and counts of diffusers, grilles and units measured on the plan.
- Reusable assemblies for fan coils, air handlers and ductwork across projects.
- Change one equipment price and the estimate recalculates itself.
Illustrative walkthrough of the platform workflow.
HVAC line items included
Start from a base built for HVAC, not from scratch.
Equipment
- Mini-split / inverter
- VRF systems
- Air handlers (fan coil)
- Chillers
- Condensing units
Air distribution
- Sheet-metal ductwork
- Duct insulation
- Diffusers
- Grilles & dampers
- Flex duct
Refrigeration & controls
- Copper line sets
- Refrigerant charge
- Thermostats & controls
- Condensate drains
- Startup & commissioning
Frequently asked questions
How do I estimate an HVAC job faster without manual spreadsheets?
How do I measure duct runs and count diffusers from a plan?
Is OneEstimate an affordable alternative for HVAC estimating?
Can I use it just for HVAC estimating?
Can I update equipment prices and have everything recalculate?
Can I measure ductwork and count diffusers on the plan?
How much does it cost?
Do I need to install anything?
What contractors say
Professionals who estimate faster and win more bids with OneEstimate.
I measure duct runs right on the plan and count diffusers, grilles and units without touching a calculator. OneEstimate totals it by system and the labor is already built in.
Reusing my equipment and ductwork assemblies from job to job cut my bidding time in half.
Solutions by trade
Estimate your next HVAC job today
Create your first HVAC estimate free, with ready assemblies and prices you control.
Start freeStart plan from $19/mo · No credit card · Runs in your browser