Most HVAC and renewables businesses don’t have a productivity problem they can point to. They have a week that feels busier than the numbers suggest.
This guide sets out the five most common root causes, what each looks like day to day, how to tell whether it is affecting your business, and the order to tackle them in.
What Poor Productivity Looks Like Day to Day
Engineers are out every day, the phones don’t stop and the order book looks healthy, yet margin is thinner than it should be and too much still comes back to the owner or a handful of senior people. The signs are usually familiar:
- Jobs that need a second visit nobody planned for.
- Invoices going out days or weeks after the work is finished.
- The owner, or a few senior managers, fielding questions that someone closer to the work could answer.
- The same customer details typed into three different systems.
- Experienced engineers or coordinators leaving, and taking know-how with them.
That gap between effort and output rarely comes from people not working hard enough. In HVAC, heat pump, solar, EV charging and electrical contracting businesses, it usually comes from how the business is structured: how work moves from enquiry to invoice, who can make which decisions, and what the business actually measures.
It is also why the usual fixes disappoint. A new job management system, another hire in the office or a tighter grip from the top can all help for a while. None of them change the structure underneath, so the same problems come back, often at a larger scale.
What Causes Poor Productivity in an HVAC Business?
Five causes come up again and again. Each is structural, and each makes the others worse.
Work Runs on Memory, Not a Process
Two surveyors produce different survey packs for the same type of job. Install teams arrive to find the kit list doesn’t match the design. The same questions get asked on every job because the answers live in someone’s head, and when that person is off, work slows or stops.
Most HVAC and renewables businesses grow by adding jobs faster than they add structure. The way work was done at £1M, when the founder could see every job, gets stretched to £5M, £10M or £20M without ever being written down or redesigned. Bringing in a management team doesn’t solve this on its own: each manager often runs their area their own way, so the business ends up with several versions of the same process. Workarounds pile up and rework becomes normal.
Nobody sees the full cost because it is spread across dozens of small delays: a return visit for a missing part, a chased supplier, an invoice that goes out late because the paperwork wasn’t complete. A second visit uses the same labour and van time as productive work and earns nothing, so it comes straight out of job margin.
| Check your business: Could a new starter follow your process from enquiry to invoice without asking someone? How many jobs last month needed a second visit that wasn’t planned? Where does work sit waiting longest between stages? |
Decisions Keep Travelling Upwards
In a smaller business, pricing questions, scheduling clashes, customer complaints, supplier choices and staff issues all land on the owner’s desk. In a larger one, a management team handles the day to day, but anything unusual, expensive or awkward still travels up to the owner or a small group of directors. Either way, work pauses while it waits for an answer.
This rarely comes from a controlling owner or a weak team. Managers are usually promoted for being good at the technical work, then given responsibility without clear authority, information or limits. Without knowing what they are allowed to decide, and on what basis, the safe option is to ask. Over time the whole business learns to wait. Clear decision rights are what break the pattern.
The effect is that the owner, or the senior team, becomes the ceiling on how much work the business can handle. It is also one of the first things a buyer, lender or investor looks at, because a business that stalls when the owner steps away is harder to value and harder to fund.
| Check your business Which decisions reached you last week that someone else could have made? Do your managers know what they can approve without asking, and up to what value?What would happen if you were unreachable for 30 days? |
Nobody Owns the Job From Start to Finish
The office blames the field team and the field team blames the office. Everyone does their part and hands it on, but nobody owns the job from start to finish. In larger businesses the same gap opens up between departments: sales, design, operations and finance each hit their own targets while the job falls between them. Good ideas for fixing recurring problems come up in the van or the kitchen and go nowhere.
When roles are defined by tasks rather than outcomes, people optimise their own piece. A surveyor measured on surveys completed has little reason to check whether the install team can work from them. That is a structural issue, not an attitude problem. Most people want to do good work. They need to know which outcome they own and have a route to fix what gets in the way. The CIPD’s guidance on job design makes the same link between clearly set roles and responsibilities, well-run processes and performance.
Without that, the cost shows up as rework, slow responses and experienced people leaving. Replacing a good engineer or coordinator takes months, and the knowledge they carried often leaves with them.
| Check your business Does each role know which outcome it owns, not just which tasks? When someone spots a recurring problem, is there a clear way for it to get fixed? Do your field and office teams share any of the same measures? |
Activity Gets Measured, Margin Doesn’t
Success is judged by jobs booked, hours worked or turnover. Smaller businesses often see job margin only at year end. Larger ones may have monthly management accounts, but margin by job, contract type or team arrives too late to act on, or nobody fully trusts it. The busiest people are seen as the most valuable, even when much of their time goes on fixing problems that shouldn’t have happened.
What gets measured shapes what people do. If the only visible numbers are volume and revenue, the business will chase volume, even when some of that work loses money. Without a small set of shared operating measures, reviewed on a regular rhythm, improvement depends on individual effort and fades as soon as attention moves elsewhere.
This is how a business grows revenue while margin quietly falls. It also explains why improvements don’t stick: a fix that nobody measures tends to drift back to the old way within a few months.
| Check your business Do you know the margin on each job within a week of it finishing? Which three numbers does your team review together every week? Are people recognised for removing problems, or for working around them? |
Software Is Bought Before the Process Is Fixed
Job management software, spreadsheets, a CRM and supplier portals that don’t talk to each other. The same customer details typed in three times. Engineers still ringing the office for information the system should hold. Software bought to solve a problem that is now only partly used. In larger businesses, each department may have chosen its own system, so the gaps sit between teams as well as between tools.
Technology is often bought to fix a symptom before the process underneath is clear. If the workflow is inconsistent, putting it into software makes the inconsistency faster and harder to see. The system gets the blame, and the next one is bought for the same reason.
The better sequence is to map how work actually flows first, remove the steps that add nothing, and then choose the systems and automation that support what is left. Automation and AI can take a great deal of admin off a team, but only once the process they are automating is defined.
| Check your business Could you draw how a job moves through your systems today, step by step? How many times is the same information entered by hand? Which system do people work around rather than through? |
Why Fixing One Cause Rarely Works
These five causes feed each other. Unclear processes push decisions up the business. Decisions held at the top leave people unable to own outcomes. Without ownership, measures carry little weight. Without clear processes and measures, new technology automates the confusion. Tackling one in isolation usually brings short-term relief before the others pull it back.
How to Improve Productivity in the Right Order
Lasting improvement comes from getting the order right. Each step makes the next one easier:
- Map one typical job. Follow it from first enquiry to final invoice and note every handover, wait, repeated question and return visit.
- Fix the process. Remove the steps that add nothing and write down the ones that remain, so the work no longer depends on memory. For renewables installers, MCS publishes quality management system guidance, and the requirements for each sector are covered in installer certifications by sector.
- Set decision rights. Agree which decisions each manager can make, up to what value, without asking.
- Give each role an outcome. Define what each role owns end to end, not just its tasks.
- Agree a few shared measures. Choose a small set of operating numbers, such as job margin and return visits, and review them together every week.
- Then choose the systems. Select or reconfigure software to support the process you now have, and automate the admin that is left.
Frequently Asked Questions
In most HVAC and renewables businesses, the root cause is an undefined process: the way work moves from enquiry to invoice lives in people’s heads rather than being written down. That one gap creates most of the others. Decisions route back to the owner or senior team because nobody else has the full picture, rework and return visits become normal, and new software struggles because there is no settled process for it to support.
Official statistics, such as the ONS productivity measures, track output per hour or per worker across the economy. Inside a single business, revenue per engineer is a common starting point, but it hides a lot. More useful measures show how cleanly work flows: margin on each completed job, the share of jobs needing an unplanned return visit, first-time fix rate on service work, time from survey to install, and time from completion to invoice. A handful of these, reviewed weekly by the team, gives a far clearer picture than turnover alone.
Only if the process it supports is already clear. Software speeds up whatever it is given, so an inconsistent workflow becomes a faster inconsistent workflow, and the system usually takes the blame. Map how a typical job moves through the business first, remove the steps that add nothing, then set the software up around what remains.
Rarely. When engineers or office staff seem slow or disengaged, the cause is usually structural: unclear roles, no authority to make routine decisions, measures that reward activity rather than results, and no route to fix recurring problems. Replacing people without changing that structure tends to reproduce the same issues with a new team.
Buyers, lenders and investors look closely at how dependent a business is on its owner, how consistent its margins are, and whether its processes are documented. Poor productivity usually shows up in all three. A business that runs smoothly without the owner, with predictable job margins, carries less risk for a buyer, which supports a stronger valuation and smoother due diligence.
Before the next big step, not after it. Hiring, buying new software, taking on a larger contract or preparing for a sale all magnify whatever structure is already there. Fixing the process first means growth adds capacity rather than chaos, and it gives a buyer or lender a business that holds up when they look closely.
