HVAC estimate calculator for your website
In short
Brift adds an HVAC replacement estimate to a contractor’s website: the homeowner picks a system (AC and furnace, heat pump, ductless mini-split), sees an installed range, and the AI agent books the in-home assessment. It is built from the contractor’s pages in 60 seconds.
Try the calculator
Example using published average prices
Published U.S. planning ranges for equipment, standard materials and professional installation.
Put this calculator on my site7-day free trial, live in 60 seconds
What your visitors ask before they call
- How much does it cost to replace an AC and furnace?
- Heat pump or furnace: which is cheaper to run?
- Can you reuse my existing ductwork?
- Do you offer financing or maintenance plans?
- How fast can you install in an emergency?
What the calculator asks
- System type
- Split AC and furnace, ducted heat pump and ductless mini-splits have distinct ranges.
- Home size
- Sets the tonnage and the equipment model.
- Ductwork condition
- Repairs or new ducts add significantly.
- Efficiency rating
- Higher SEER2 equipment costs more upfront.
Price ranges for the trade
The calculator never shows a firm price: a range, then the next step you choose (booking, call-back, detailed quote).
| Option | Range | Source |
|---|---|---|
| Central AC + gas furnace | $9,000 – $18,000 | HVACDirect |
| Ducted air-source heat pump + air handler | $8,000 – $18,000 | HVACDirect |
| Single-zone ductless mini-split | $3,500 – $7,500 | HVACDirect |
Published U.S. planning ranges for equipment, standard materials and professional installation.
Example conversation
VisitorOur AC died and the furnace is 18 years old. What are we looking at to replace both?
AgentHere’s the installed range for an AC and furnace. How big is the house, roughly?
VisitorAbout 2,200 sq ft, two floors.
AgentWe’d want to check the ductwork and size it properly. I can book a free in-home assessment tomorrow morning, does that work?
Illustrative example: on your site, the agent answers with your prices and timelines.
What you receive
A lead that arrives with the project, the range shown and the visitor’s contact details, by email and in your dashboard with a summary of the conversation.
Setup
Paste your website URL: Brift reads your pages and builds the agent and the calculator in 60 seconds. Then paste one script tag once (WordPress, Wix, Squarespace, Webflow, GoDaddy or any site). Updates publish without touching your site again.
Custom build, calculator builder or Brift
| Custom-built calculator | Calculator builder | Brift | |
|---|---|---|---|
| Cost | Often $250–$700 one-off | From about $18/month | $79/month after a 7-day trial |
| Setup | Days to weeks | You build the formulas | 60 seconds, from your website |
| Answers questions | No | No | Yes, 24/7, with your information |
| Price updates | Back to the developer | Edit the formulas | In the studio, published instantly |
Sources: a published custom calculator offer on Contra, and ConvertCalculator’s starting price on Capterra. Contra — instant price calculator for your website · Capterra — ConvertCalculator pricing
Pricing
Brift Unlimited: $79/month after a 7-day free trial, or $53/month billed annually ($632/year). Unlimited conversations.
FAQ
Does the homeowner get a firm price?
No, a range. Your quote follows the assessment.
Can it handle emergency calls?
The agent answers 24/7 and can route urgent requests to your phone or booking link.
Can I set my own ranges?
Yes, per system type, in the studio.
What does it cost?
$79/month after a 7-day free trial.