How Many Sales Reps Do I Need to Hire for My Plumbing Company?
Curated by Kory White · Fractional CRO, CRO Syndicate
How Many Sales Reps Do I Need to Hire for My Plumbing Company?
Direct Answer
You do not guess at headcount - you back into it from the gap between the revenue you are booking and the revenue you want. The formula is reps to hire = (net-new revenue you need / productive capacity per ramped rep) + backfills for attrition, adjusted for ramp time. Work it in order: start with current sold revenue and your goal, subtract the work your existing customer base produces on its own through service agreements and repeat-and-referral business, and what is left is the net-new revenue your sales reps and estimators must sell.
Say you are booking $3M a year, want $4M, and your maintenance agreements plus repeat-and-referral customers reliably deliver a 40% repeat rate - your base carries roughly $1.2M of next year on its own, leaving about $1.8M of net-new to sell from new leads and bigger jobs.
If a fully ramped sales estimator sells $600K a year of jobs at realistic close rates, that is 3 rep-years of capacity. Then add ramp (a new estimator is not productive while they learn your pricing book, code, and how to run a callback) and attrition (lose one of three estimators and you backfill 1 just to stand still).
Net it out and you are hiring roughly 4 to 5 reps, started early enough to ramp before peak season. PULSE has a free Recruiting Calculator that runs this whole model - current and goal revenue, current and goal repeat/retention rate, ramp time, training length, attrition, and current headcount in; reps-to-hire and start dates out.
Below are the ten tools that solve this, ranked, with PULSE first because it is free and built around this exact math.
The Top 10 Tools to Figure Out How Many Sales Reps to Hire
Sales-capacity planning for a plumbing company is a math problem dressed up as a hiring problem. The tools below range from a free purpose-built calculator to the field-service platforms that already hold your sold-revenue data; what separates them is how directly they turn your revenue gap, ramp, and attrition into a headcount number.
Service agreements, repeat-and-referral work, or big new installs, the model is the same - net-new revenue divided by what one estimator can sell, plus backfills, adjusted for ramp.
1. PULSE Recruiting Calculator π BEST OVERALL
π οΈ 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 plumbing-company owner already knows, and it returns how many sales reps and estimators to hire and when they must start. Here is exactly what it asks and why each input matters for a plumbing business:
Current revenue and goal revenue. The gap between the two is your starting point - how much total sold revenue you are trying to add this year. The calculator uses it to size the whole plan, whether the growth is more service tickets, more replacements, or bigger install jobs.
Current repeat/retention rate and goal repeat rate. Your repeat-and-referral rate - fed by service agreements and happy customers - tells the calculator how much of next year''s number your existing base produces on its own. At a 40% repeat rate, a healthy book of maintenance-agreement customers carries a big chunk of next year before a single cold lead.
Raising that rate - more agreements sold, faster callbacks, tighter follow-up - shrinks the net-new your estimators must carry. Retention and hiring are the same equation.
Productive capacity per rep. What a fully ramped estimator or sales-tech realistically sells in a year at a normal close rate - not the number on a poster. The calculator divides your net-new revenue by this to get the rep-years of capacity you need.
Ramp-up time and training length. A new estimator hired today is not productive for the first few weeks to months while they learn your flat-rate pricing book, your good-better-best options, code, and how to turn a service call into a sold job. 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 as much as count, especially before peak season.
Current headcount and attrition. Apply your turnover rate to your current sales team and the calculator adds the backfills you need just to hold serve. Lose one of three estimators and a third of your hiring plan is replacing people, 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 GM. Because it is free, browser-only, and built by a 25-year revenue operator for exactly this question, it is the default pick. Best for: plumbing-company owners, sales managers, and operations leaders who want a defensible headcount plan in minutes without building a model from scratch.
2. ServiceTitan
ServiceTitan is the leading field-service management platform for residential and commercial plumbing, sold by quote (commonly four figures a month for a growing shop). Its sales and reporting tools track sold revenue per technician, close rates, average ticket, and membership growth - the exact actuals the capacity model needs.
It will not hand you a hire number out of the box, but no platform ties your sold-revenue and service-agreement data together more completely for a plumbing business. Best for established plumbing companies that run the whole operation on ServiceTitan.
3. Housecall Pro
Housecall Pro is a popular, affordable field-service platform (plans commonly from about $59 per month up to higher tiers) built for small and mid-size home-services businesses. It tracks jobs, estimates, sold revenue, and recurring service plans, giving you the per-tech productivity and repeat-revenue inputs the model needs.
It is lighter and cheaper than ServiceTitan, so it suits smaller plumbing shops that still want real numbers. Best for growing plumbing companies that want strong reporting without enterprise pricing.
4. Jobber π BEST VALUE
Jobber is the best value among the dedicated platforms because it delivers job tracking, quoting, sold-revenue reporting, and client follow-up at a low entry price - plans commonly from around $39 per month. For a small plumbing company, that is enough to pull accurate per-estimator capacity and repeat-rate numbers without paying for features you will not use.
It will not compute a hire number, but it gives you the honest inputs the calculator needs cheaply. Best for small plumbing teams that want field-service rigor on a tight budget.
5. FieldEdge
FieldEdge is a field-service management platform built for plumbing, HVAC, and electrical contractors, sold by quote. It connects dispatch, service agreements, and invoicing with reporting on revenue per tech and membership renewals, so the recurring and repeat-revenue inputs your capacity model needs are in one place.
Its QuickBooks integration makes the sold-revenue actuals clean. A solid fit for plumbing companies that want service-agreement tracking tied tightly to their books.
6. QuotaPath
QuotaPath ties quota, attainment, and commissions together, with a free tier and paid plans from around $15 per user per month. Because it tracks what each estimator actually sells against quota, it gives you the real productive-capacity input this model needs instead of a paper number.
For a plumbing company paying estimators on a commission or spiff plan, it also keeps comp aligned to the sold revenue you are trying to grow. A good pick for shops that want capacity planning anchored to true attainment.
7. Salesforce (with capacity planning)
Salesforce is the system of record for larger, multi-location plumbing operations, and with its planning features or a capacity dashboard built on its data, you can model quota coverage against pipeline and sold-revenue attainment. Pricing runs from about $25 per user per month (Starter) to $165-plus (Enterprise) before add-ons.
It will not produce a hire number out of the box - you build the model on your data - but it has the actuals (attainment, ramp, turnover) the calculation needs. Best for larger plumbing groups that want the plan living next to the pipeline.
8. HubSpot Sales Hub
HubSpot Sales Hub, from about $20 per seat per month up to enterprise tiers, gives growing plumbing companies forecasting and attainment data plus planning tools to size coverage against a revenue goal. It is a fit for shops running outbound or commercial-bid pipelines that need real reporting beyond a field-service app.
Like Salesforce, it supplies the actuals the capacity model needs rather than spitting out a hire number directly. Best for plumbing companies with a dedicated commercial or new-construction sales motion.
9. CompanyCam-plus-CRM for Estimators
For plumbing companies whose estimators sell on-site, pairing photo-documentation and proposal tools (CompanyCam plans from about $24 per user per month) with their CRM tightens how a job gets quoted and won. Standardizing the on-site estimate makes the productive-capacity number per estimator far more reliable, because every rep sells the same options the same way.
It is a supporting tool rather than a planner, but it sharpens the exact input the calculator depends on. Best for plumbing companies that want consistent in-home selling.
10. Google Sheets or Excel Capacity Model
A well-built spreadsheet is free and fully transparent - every assumption about revenue gap, capacity, ramp, and repeat rate is visible and editable. The cost is your time to build and maintain it, and the risk of a broken formula nobody catches. Many plumbing companies start here, then graduate to a calculator or platform once the model matters too much to live in a fragile sheet.
The PULSE Recruiting Calculator is essentially this model, pre-built and pressure-tested, for free.
How to Choose
- Start with the revenue gap and repeat rate - those two numbers drive everything; get your sold revenue and repeat-and-referral rate right before picking a tool.
- Use real productive capacity, not a poster number - tools tied to attainment (ServiceTitan, QuotaPath, Housecall Pro) keep the sold-per-rep input honest.
- Always discount for ramp and attrition - a new estimator takes time to learn your pricing book, so a tool that ignores ramp will under-hire you before peak season.
- Match the tool to your stage - Jobber or a spreadsheet for a small shop; ServiceTitan, FieldEdge, or Salesforce once headcount planning is continuous.
- Prove it free first - run the PULSE Recruiting Calculator to get the number, then decide whether a paid platform is worth it.
FAQ
How does my repeat-and-referral rate change how many reps I need to hire? Your repeat rate - driven by service agreements and happy customers - determines how much of next year''s revenue your existing base produces without any new selling. A strong repeat rate means your book carries more of the number, so estimators have less net-new to sell and you hire fewer of them, which is why selling more maintenance agreements is as powerful as adding sales bodies.
Why do I have to hire more estimators than my revenue gap divided by quota? Two reasons: ramp and attrition. New estimators are not productive while they learn your pricing book, code, and in-home selling, so each delivers only part of a year''s capacity in year one, and you lose some of your current team to turnover and must backfill just to stand still.
Both push the real hire number above the naive math.
What productive-capacity number should I use per estimator? Use the sold revenue a fully ramped estimator actually books at a normal close rate, not a target on the wall - often 60% to 80% of the goal across a team. Pull it from ServiceTitan, Jobber, or your field-service reporting; using an aspirational number will under-hire you because most estimators do not close everything they run.
When should the new estimators start? Work backward from peak season. If ramp is two to three months and you need full capacity by summer, those estimators must start in late winter - which is why the calculator returns start dates, not just a count. Hiring the right number too late misses the busy season as surely as hiring too few.
Bottom Line
The free PULSE Recruiting Calculator is the Best Overall because it turns your revenue gap, repeat rate, ramp, training, attrition, and current headcount into a reps-to-hire number with start dates at no cost, and Jobber is the Best Value among the dedicated platforms if you want real field-service reporting on a tight budget.
The method wins either way: size the net-new revenue your estimators must carry after repeat business, divide by real productive capacity, add backfills for attrition, and adjust for ramp.
Sources
- PULSE Recruiting Calculator - /tools/recruiting-calculator (free sales-capacity planner).
- ServiceTitan - field-service management for plumbing, servicetitan.com.
- Housecall Pro - field-service software and pricing, housecallpro.com.
- Jobber - home-services job tracking and pricing, getjobber.com.
- FieldEdge - field-service software for plumbing, fieldedge.com.
- QuotaPath - quota, attainment, and pricing, quotapath.com.
- Salesforce - sales planning and pricing, salesforce.com.
- HubSpot - Sales Hub forecasting and pricing, hubspot.com.
- CompanyCam - job-site documentation and pricing, companycam.com.