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 freeNo credit card · Free plan · 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.
Built for HVAC work
Everything an HVAC contractor needs to bid fast and protect margin.
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.
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.
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
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?
Solutions by trade
Estimate your next HVAC job today
Create your first HVAC estimate free, with ready assemblies and prices you control.
Start freeNo credit card · Free plan · Runs in your browser