Run Your Entire HVAC Business From One Platform
From the first sales lead to the final service contract — HVAC Flow connects your sales, estimation, procurement, delivery and maintenance in a single, enterprise-grade system.
Trusted by HVAC businesses across India
Your team is running on WhatsApp, Excel and memory
Leads forgotten. Quotes misquoted. Purchase orders on paper. Service jobs tracked in a spreadsheet. When each department runs on a different tool, things fall through the cracks — and it costs you projects.
Leads lost in chats
WhatsApp enquiries disappear. No one knows which rep is following up or where the customer stands.
BOQ errors & rework
Manual Excel estimates have version control chaos. Wrong pricing reaches the customer. Margins erode.
Procurement blind spots
No one knows what was ordered, received, or dispatched. Site shortages cause project delays.
Service jobs missed
PMS due dates come and go unnoticed. AMC contracts expire silently. Customers get frustrated.
There's a better way
One platform. Every workflow covered.
Every module is connected — linked across your entire workflow so your team always has full context.
Sales & CRM
Capture every enquiry, track the pipeline, convert leads to customers
Lead Management
Capture, track and convert every sales lead into a customer
Calls & Activity
Log calls against any entity — account, lead, opportunity or job
Accounts / Directory
Unified directory for customers, suppliers, vendors and employees
Opportunities
Manage your sales pipeline with configurable stages and custom fields
All 16 modules included in every plan — no feature gating.
Limits are on users, not features.
Everything your team needs, nothing they don't
Purpose-built for how HVAC businesses actually operate — from the first enquiry call to the last service visit.
Turn every lead into a signed contract
Capture enquiries from multiple channels, assign to sales reps, log calls and activities, and convert directly to an opportunity — all in one place. No more leads lost in WhatsApp chats.
- Configurable pipeline stages per your sales process
- Lead-to-Opportunity conversion in a single click
- Activity log: calls, site visits, follow-ups
- Ownership rules: each rep sees only their leads
Win more projects with faster, accurate quotes
Build professional Bills of Quantities for customers and brands. Import room-by-room load calculations from the BOD tool, compare brand quotes side by side, and export polished PDFs.
- Room-wise HVAC load calculator (BOD) → auto-import to BOQ
- Send RFQs to multiple brands, compare quotes
- GST, discount and line-total auto-computed
- One-click PDF export with your company branding
Procure smarter, never run short on site
Raise purchase orders against your BOQ or opportunity in seconds. Receive goods (GRN) against each PO line item, update inventory automatically, and flag discrepancies before they hit the project.
- PO linked to BOQ, opportunity or standalone
- Goods Receipt Note (GRN) per PO with item-level inspection
- Inventory updated automatically on receipt
- Negative-stock alerts before dispatch
Execute delivery and service without the chaos
Issue delivery challans, dispatch goods, and let the system create Goods Issue Notes automatically. Handle customer returns, schedule PMS visits and manage long-term AMC contracts — all linked back to the project.
- Delivery Challan → auto Goods Issue Note on dispatch
- Return Challan linked to original delivery
- PMS: schedule, assign and track maintenance visits
- AMC: contract lifecycle, renewals and service items
Invoice on time, every time
Generate GST-compliant proforma invoices from your approved BOQ or opportunity. Track payment status, produce PDF invoices with custom templates, and keep your receivables visible at a glance on the dashboard.
- Invoice linked to account, opportunity or BOQ
- Custom PDF templates with Tiptap rich-text editor
- Dashboard receivables summary by status
- Full audit trail — who created, approved, and when
Your business flow, digitised end to end
Every module is connected. Records are linked across the entire workflow — lead, opportunity, BOQ, PO, delivery, invoice, and service — so your team always has full context with zero duplication.
Capture & Qualify
Log leads from any channel. Assign to a rep. Track calls and activities until the lead is qualified to an opportunity.
Estimate & Approve
Build room-wise load calculations, generate BOQ for the customer, send RFQ to brands, compare prices and lock the best deal.
Procure & Execute
Raise POs to suppliers, receive goods into inventory, dispatch via delivery challan, and auto-deduct stock.
Invoice & Maintain
Generate GST-compliant invoices, sign AMC contracts, schedule preventive maintenance and track every service visit.
Every record is linked — from the first lead to the last service visit.
Convert a lead to an opportunity in one click. Link BOQs, POs, invoices and service contracts back to the same opportunity. Dispatch a delivery challan and the Goods Issue Note is created automatically. One traceable thread, zero re-entry.
HVAC teams love using it
Real businesses, real results. Here's what our customers have to say.
“Before HVAC Flow, our BOQ process took 3 days and still had errors. Now we generate a complete, branded PDF in under 30 minutes. We've won more tenders just by looking more professional.”
“The PMS module changed how we handle service. We generate all three maintenance visit records from the opportunity in one click, and the dashboard shows exactly which visits are overdue. We don't miss service jobs anymore.”
“We tried a generic ERP before. It had 100 features we didn't need and was missing the BOQ-for-brand RFQ flow that we use daily. HVAC Flow was built for us from day one.”
4.9 / 5 average rating
Based on customer reviews
Plans from ₹40,000 / 6 months
All 15 modules included in every plan. No feature gates. 30-day free trial.
+18% GST extra · Upgrade anytime
Everything you need to know
Can't find the answer you're looking for? Email us at info@teqnodux.com and we'll get back within a business day.
Yes — every module is designed around how HVAC contractors actually work. The Basis of Design (BOD) tool handles room-by-room load calculations, the BOQ module understands high-side/low-side equipment, and PMS/AMC are built for recurring service contracts. This isn't a generic ERP repurposed for HVAC.
Most teams are live within a day. The onboarding wizard walks you through your business profile, addresses, document prefixes and preferences in three steps. Your admin user is created instantly. We also offer dedicated onboarding assistance on Professional and Enterprise plans.
Absolutely. Every module (Leads, Opportunities, BOQ, PMS, etc.) has fully configurable pipeline stages — you can add, remove, rename, reorder and colour-code stages. You can also add custom fields (text, number, date, dropdown, checkbox) to any module without any code.
Yes. All BOQs, purchase orders and invoices calculate GST automatically using configurable tax rates. Invoices are generated as GST-compliant proforma invoices. Your GSTIN, PAN and billing address appear on all documents.
Yes. Each company (tenant) gets a completely separate database. There is no data sharing between tenants — your records, files, and configurations are fully isolated. Attachments are stored in a private S3 bucket path keyed to your account.
Yes. BOQ Customer, BOQ Brand, Purchase Orders, Delivery Challans, Invoices and AMC documents all support Excel and PDF export. The PDF export uses fully customisable templates — you can design your own layout using our drag-and-drop template builder with your logo, colours and variable placeholders.
You'll be prompted to upgrade to a higher plan before adding more users. No data is lost and existing users are unaffected. Enterprise plans have a flexible user limit negotiated per your team size.
The web app is fully mobile-responsive and works well on any smartphone browser. A dedicated native mobile app for field service engineers (PMS and AMC completion) is on the roadmap.
Your HVAC business deserves
better than a spreadsheet.
Join HVAC companies across India who've replaced WhatsApp chaos with one clean, connected system. Start free — no credit card, no contracts.