How Many Sales Reps Do I Need to Hire for My Irrigation Company?

I don't guess at headcount. I back into it from the cold, hard gap between where your revenue is and where you want it.

Here's the formula that actually works: reps to hire = (net-new revenue you need / productive capacity per ramped rep) + backfills for attrition, adjusted for ramp time.

Work it in order or waste money. Start with current revenue and goal revenue. Subtract the growth your existing base produces on its own through repeat installs, service renewals, and referrals. What's left is the net-new number your reps must generate.

Let me walk you through a real example. Say you run an irrigation company at $3M revenue, want $4.5M, and earn 25% of next year from repeat-and-referral (maintenance contracts, winterization, repairs, neighbor referrals). Your base carries itself to about $3.75M, leaving $750K of net-new to sell.

A fully ramped outside rep selling residential and light-commercial systems closes about $600K a year at realistic attainment. That's roughly 1.25 rep-years of capacity. Then add ramp (a new rep learning hydraulics, controllers, and your install crews is not productive for the first few months) and attrition (lose 1 of 4 reps and you must backfill just to stand still).

Net it out: you're hiring roughly 2 to 3 reps, started early enough to ramp before peak spring install season.

PULSE has a free Recruiting Calculator that runs this whole model - current and goal revenue, current and goal repeat-and-referral rate, ramp time, training length, attrition, and current headcount in; reps-to-hire and start dates out. It's free because I built it myself after 22 years of watching owners guess and lose.

Below are the ten tools that solve this, ranked, with PULSE first because it's free and built around this exact math.

The Top 10 Tools to Figure Out How Many Sales Reps to Hire

Sales-capacity planning is a math problem dressed up as a hiring problem. The tools below range from a free purpose-built calculator to full field-service and CRM platforms. What separates them is how directly they turn your revenue gap, ramp, and attrition into a headcount number.

Irrigation, lawn care, or any seasonal install-and-service trade - the model is the same. Revenue gap divided by productive capacity, plus backfills, adjusted for ramp.

1. PULSE Recruiting Calculator 🏆 BEST OVERALL

🛠️ Use it free now -> Recruiting Calculator - no login, no spreadsheet, headcount plan with start dates in seconds.

PULSE's free Recruiting Calculator runs the entire capacity model in your browser. You type in the inputs every irrigation owner already knows. It returns how many reps to hire and when they must start. Here's exactly what it asks and why each input matters:

Current revenue and goal revenue. The gap between the two is your starting point - how much total revenue you're trying to add this season. The calculator uses it to size the whole plan, whether you sell residential drip systems or large commercial sprinkler jobs.

Current and goal repeat-and-referral rate. For an irrigation company this is your retention number - the share of next year's revenue that comes from existing customers through maintenance plans, spring start-ups, winterization, repairs, and word-of-mouth referrals. At a 25% repeat-and-referral rate a $3M base carries itself toward $3.75M before a single new install is sold, so your reps only have to close the remaining gap.

Raising that rate shrinks the net-new your reps must carry - service retention and hiring are the same equation.

Productive capacity per rep. What a fully ramped rep realistically books in a year at normal attainment - not the number on a goal sheet. A residential-focused rep closes smaller tickets at higher volume; a commercial-and-municipal rep closes fewer, larger jobs. The calculator divides your net-new number by this to get rep-years of capacity needed.

Ramp-up time and training length. A rep hired today is not productive for the first few months while they learn your system designs, controllers, backflow rules, and how to walk a property and quote it. The calculator discounts a new hire's first-year contribution by the ramp, which is why you always hire more bodies than a naive "gap divided by quota" would suggest - and why start dates matter most in a seasonal trade where spring is everything.

Current headcount and attrition. Apply your turnover rate to your current team and the calculator adds the backfills you need just to hold serve. Lose one of four reps and one of your hires is replacing a person, not adding capacity.

Put those in and it outputs a clean reps-to-hire number with start dates, so you can hand it to your recruiter or your bank. Because it's free, browser-only, and built by a 22-year revenue operator for exactly this question, it's the default pick. Best for: irrigation owners and operations managers who want a defensible headcount plan in minutes without building a model from scratch.

2. ServiceTitan

ServiceTitan is the field-service platform many irrigation and lawn-care contractors run for dispatch, estimating, and revenue tracking, priced by quote (commonly four figures a month for a growing shop). It won't hand you a hire number out of the box - you build the capacity model on top of its data - but it holds the actuals the calculation needs: average ticket, close rate, revenue per rep, and seasonal demand curves.

Best for established irrigation companies that want the plan living next to the jobs and revenue it depends on.

3. Jobber

Jobber is field-service software aimed at smaller home-service and irrigation crews, with plans from about $29 per month up to a few hundred for larger teams. Because it tracks quotes, won work, and revenue per technician, it gives you the real productive-capacity input this model needs instead of a guessed number.

You still bring the revenue gap and ramp assumptions, but it grounds the per-rep figure in what your team actually books. A strong fit for irrigation businesses graduating off paper and spreadsheets.

4. Aspire (ServiceTitan)

Aspire is a business-management platform built specifically for green-industry and irrigation contractors, sold by quote (commonly four to five figures a year). It models revenue, crew capacity, and estimating across maintenance and install divisions, so you can flex your repeat-and-referral rate or attrition and watch the workload that needs new sales coverage move.

It's more than a single calculation - it's an operating system for green-industry companies - but it makes capacity planning a living model rather than a once-a-year exercise. Best for irrigation firms past the spreadsheet stage.

5. HubSpot Sales Hub

HubSpot Sales Hub, from about $20 per seat per month up to enterprise tiers, gives growing irrigation teams a CRM plus forecasting and attainment data to size coverage against goals. Like the field-service platforms, it supplies the actuals the capacity model needs rather than spitting out a hire number directly.

For an irrigation company managing both residential leads and commercial bids, keeping the pipeline and the plan in one CRM keeps the math honest. Best for teams that want a true sales

Math doesn't lie. Guessing does. Use the calculator, hire the right number, and get back to selling before spring hits.

*If you want to run the numbers yourself without building a spreadsheet, grab the free Recruiting Calculator from PULSE. I built it for exactly this question. No login. No fluff.*

*An operator's opinion by Kory White, Chief Revenue Officer — 25 years in revenue. More at PULSE · CRO Syndicate*