Running an HVAC business in 2026 comes with no shortage of challenges. From juggling maintenance schedules and emergency callouts to managing invoices, quotes, and customers on the go, more contractors are turning to HVAC business apps to take the pressure off and keep everything running smoothly.
To help you cut through the noise, we’ve rounded up the best HVAC apps in the UK that’ll make your work easier, faster, and more connected, both in the field and behind the scenes.
The 13 Best HVAC Apps in the UK
We’ve grouped the best HVAC business apps by category so you can find what fits your business best, from all-in-one job management platforms to specialist diagnostic, communication, and finance tools.
The Best All-in-One HVAC Business App
BigChange
BigChange is the best all-rounder HVAC business app. As the market-leading, all-in-one job and field service management platform, it’s built with UK trades and service businesses in mind. It brings every part of your operation together, from scheduling and asset tracking to invoicing and reporting into one intuitive, easy-to-use platform.
The best part? This HVAC service software takes care of planned maintenance and emergency callouts, gets rid of the paperwork, and keeps your operation running efficiently as you scale.
Key features:
- Mobile App for HVAC Engineers: On-site techs can access job details, upload photos, complete digital forms and capture signatures straight from their phone or tablet. No clipboards required!
- Intelligent Scheduling & Live Tracking: Optimise engineer routes based on skills, location and availability, while keeping customers updated with live ETA alerts, helping reduce drive time and missed appointments.
- Asset & Maintenance Management: Track HVAC units, schedule planned preventative maintenance (PPM) contracts, log service history and set reminders for compliance-critical inspections.
- Job Sheets & Digital Forms: Use fully customisable HVAC job sheets, so engineers can input diagnostics, load calculations, service recommendations, and hand them over to customers on the spot.
- CRM & Finance Integration: Connect every customer interaction (from call-out to quote to invoice) in one system, integrate with leading tools like Xero & Sage, and get paid faster.
- Business Intelligence Reporting: Get real-time data on job profitability, technician performance, customer satisfaction and asset health, helping you spot trends, improve margins and scale your HVAC business with confidence.
BigChange pricing:
- Job Management (JobWatch): From £79.95 per user/month.
Job Management Plus: From £99.95 per user/month, including enhanced features and managed hardware options.
Diagnostic & Calculator Apps for HVAC Techs
HVAC Buddy®
A go-to app for HVAC technicians, HVAC Buddy® makes system checks faster, easier and far more accurate. Instead of juggling charts or manual calculations, you can pull out your phone and get instant superheat and subcool readings for more than 100 refrigerants. It’s perfect for engineers who want to cut down on errors and get the job done right the first time.
Key features:
- Superheat and subcool calculators for precise system charging.
- Pressure–temperature tables with diagnostic suggestions.
- Save or email reports for record-keeping.
Pricing:
One-time purchase, around £9.99.
HVAC Duct Sizer
When you need to size ductwork fast, HVAC Duct Sizer takes the guesswork out of the process. This straightforward calculator helps you determine the best duct dimensions based on airflow, friction loss and velocity, ideal for quick on-site checks or validating your system designs. Whether you’re working in metric or imperial, it gives you instant, reliable results.
Key features:
- Metric and imperial units supported.
- Real-time velocity and pressure drop feedback.
- Adjust for material and temperature factors.
Pricing:
Free to use via H2X Engineering’s web-based tool.
Ref Tools (Danfoss)
If you’ve been in HVAC for a while, chances are you’ve used Danfoss’ Refrigerant Slider. The Ref Tools app takes it a step further, bringing together all the essentials in one handy platform. From quick refrigerant data lookups to step-by-step troubleshooting and spare parts identification, it’s like having a digital toolbox in your pocket.
Key features:
- PT data for 80+ refrigerants.
- Troubleshooter for step-by-step fault diagnosis.
- Spare parts finder and TXV Superheat Tuner.
Pricing:
Free to download and use.
HVACR Check & Charge
The HVACR Check & Charge app takes the stress out of refrigerant charging and helps you get it right the first time. Just enter your system details and ambient conditions, and the app instantly calculates the correct superheat and subcool values for the refrigerant you’re working with. No more flipping through charts or second-guessing your measurements.
Key features:
- Fast superheat/subcool calculators for common refrigerants.
- User-friendly interface for quick checks.
- Ideal for on-site system balancing.
Pricing:
Free on iOS and Android.
measureQuick HVAC
MeasureQuick HVAC app connects to leading brands of smart probes and sensors, like Testo, Fieldpiece and iManifold, to pull in live system data and turn it into clear, AI-assisted insights. Instead of juggling multiple tools or guessing at performance, you get a full picture of system health in one dashboard.
The app helps you pinpoint inefficiencies faster, benchmark system performance, and present customers with professional, branded reports that show exactly what’s been tested and why it matters. It’s like having a virtual diagnostic assistant in your toolkit.
Key features:
- Works with major probe brands (Testo, Fieldpiece, iManifold).
- Generates professional, branded reports for customers.
- AI-driven “Vitals Score” for system health checks.
Pricing:
Free basic version; Pro plan from $49/month per user, which includes features like customised reports and CRM integration.
Looking for more ways to improve how your HVAC business runs day to day?
Don’t miss BigChange’s guide on best practices for running an HVAC business, packed with actionable advice on scheduling, communication, and scaling your operations efficiently.
Communication & Documentation Apps
CompanyCam
CompanyCam makes job documentation effortless for HVAC teams. Instead of sorting through photo galleries or messy email chains, your engineers can snap timestamped, GPS-tagged photos that automatically sync to the cloud. They can even draw annotations or add notes right on the image, perfect for showing before-and-after results.
It’s a great HVAC app to stay organised from the first site visit to final handover.
Key features:
- Photo and video documentation with GPS tagging.
- Project timelines to track progress.
- Team collaboration with instant uploads and comments.
Pricing:
- Pro: $27/month per user
- Premium: $43/month per user
- Elite: $67/month per user
- Enterprise: Custom pricing for teams of 50+
NiceJob
In the HVAC world, word-of-mouth still matters, but these days, it happens online. NiceJob helps you turn great service into glowing reviews that win more work. The app automatically sends review invites once a job’s complete, making it easy for happy customers to share their feedback on Google, Facebook, or Trustpilot.
For businesses that rely on referrals and repeat business, NiceJob keeps your reputation strong and visible. You can even showcase verified reviews on your website to build trust with new customers before they pick up the phone.
Key features:
- Automatically sends review invites after job completion.
- Integrates with Facebook, Google, and Trustpilot.
- Showcase verified reviews on your website.
Pricing:
Starts at £59/month.
Finance & Invoicing Apps
QuickBooks
Keeping on top of your books doesn’t have to be a headache. QuickBooks is one of the most trusted accounting tools for small HVAC businesses, helping you stay organised, compliant and in control of your cash flow. You can send professional invoices, track payments in real time and keep an eye on expenses, all from your phone or laptop.
For HVAC contractors juggling multiple jobs and suppliers, QuickBooks takes the stress out of bookkeeping and tax season, giving you more time to focus on the work that pays the bills.
Key features:
- Send professional invoices and track payments.
- Automatically categorise expenses and reconcile bank transactions.
- MTD and VAT-ready for UK compliance.
Pricing:
*90% off for the first 6 months for new UK customers. Check the QuickBooks UK pricing page for current tiers.
- Sole Trader: £10/month.
- Simple Start: £16/month
- Essentials: £33/month
- Plus: £47/month
- Advanced: £115/month for the highest tier
Clear Books
If you’re a UK-based HVAC contractor or small business owner, Clear Books is a simple, cloud-based accounting tool built with you in mind. It’s designed to take the confusion out of finance, helping you manage quotes, invoices, VAT, and CIS all in one place.
For busy tradespeople who want less admin and more clarity, Clear Books makes everyday accounting quick, easy, and fully HMRC-compliant.
Key features:
- Full MTD and VAT compliance.
- Create branded quotes and invoices in seconds.
- Automatic bank feeds and reconciliation.
- CIS management for contractors.
Pricing:
- Free Plan: £0/month (basic invoicing).
- Small: £7.50/month.
- Medium: £15.50/month (adds VAT and CIS).
- Large: £20.50/month (includes project accounting).
Scheduling & Workforce Apps
Jobber
Running a small HVAC team means wearing a lot of hats, and Jobber helps you keep them all straight. This easy-to-use field service platform brings quoting, scheduling and payments together in one simple place, so you can spend less time on admin and more time on the tools.
With features like drag-and-drop job scheduling, customer self-service through the client hub, and built-in payment options, Jobber makes it easy to stay organised, get paid faster and deliver a smoother customer experience.
Key features:
- Drag-and-drop calendar for job scheduling.
- Client hub where customers can approve quotes and pay online.
- GPS tracking and route optimisation.
- Automated reminders for upcoming appointments.
Pricing:
- Core: $25/month (1 user)
- Connect: $75/month (up to 5 users) – adds automations, time/expense tracking.
- Grow: $126/month (up to 10 users) – advanced features for scaling operations.
- Plus: $378/month (up to 15 users) – full enterprise, including premium onboarding & support.
Tradify
Tradify is an HVAC business app, built for contractors who want to go digital without getting bogged down in complicated software. It’s a great fit for smaller HVAC businesses that want to handle quoting, invoicing, scheduling and payments, all in one simple app.
From the first customer enquiry to the final payment, Tradify keeps every job moving and your paperwork under control. You can create quotes in minutes, send invoices instantly, and track every stage of a job from your phone or laptop.
Key features:
- Create and send quotes in minutes.
- Track job status from enquiry to payment.
- Integrates with Xero, Sage, and QuickBooks.
- Supports card payments and online deposits.
Pricing:
- Lite: £34/user/month.
- Pro: £37/user/month.
- Plus: £44/user/month.
Simpro
Simpro is a powerful field service and asset management platform built for growing HVAC and mechanical service providers. It brings your office and field teams together in one connected system, so you can manage everything, from quoting and scheduling to preventive maintenance and reporting, without missing a beat.
For HVAC businesses ready to scale, Simpro offers complete visibility across jobs, projects and assets, helping you boost efficiency, stay compliant and make data-driven decisions that improve profitability.
Key features:
- Complete end-to-end job, project, and asset management.
- Preventive maintenance planner and contract tracking.
- Integrated quoting, invoicing, and payments.
- Real-time data feeds for performance insights.
Pricing:
Custom pricing based on business size and feature requirements.
Once your systems are running smoothly, the next step is winning more work. For practical advice on securing new clients, check out BigChange’s article on how to bid for HVAC service contracts.
Choosing the Right HVAC App for Your Business
The best HVAC app for your business depends not just on your size, but on what you need help with right now. Maybe you’re a technician who wants faster, more accurate diagnostic tools so you can get systems sorted without going back for second visits. Or maybe you’re running a small crew and need a better way to keep track of jobs, schedule work, and stay in touch with customers. You might even be looking for tools that make it easier to send invoices, chase payments, or stay on top of maintenance jobs.
Whatever the challenge, there’s an HVAC app that can make your week a whole lot easier, whether you’re fixing systems in the field or keeping things moving from the office.
Need quick, reliable tools on the job?
Start with free or low-cost calculator and diagnostic apps like HVAC Buddy® or Ref Tools to speed up system checks, cut down on errors, and keep your work sharp.
Want to bring more structure to your workload?
Try a job management platform like Jobber or Tradify. These apps make it easy to plan jobs, quote customers, send invoices, and get paid, all without the paperwork pile-up.
Ready to bring everything under one roof?
Try BigChange. It gives HVAC businesses a complete platform for managing jobs, assets, customers, and cash flow, no more switching between different tools, no lost information, no wasted time.
See how BigChange could transform your HVAC operations. Request a tailored demo today.
