3 Best Collection Agencies for Plumbing Companies: Cost & Reviews

Key Takeaways

• Plumbing companies, especially those doing commercial and contractor work, regularly face unpaid invoices that disrupt cash flow and strain operations.
• Most collection agencies for plumbing businesses operate on a contingency model, meaning you pay nothing unless the agency successfully recovers money on your behalf.
• The three best collection agencies for plumbing companies are Southwest Recovery Services, The Kaplan Group, and American Profit Recovery, each suited to different business sizes and claim types.
• All three agencies have earned positive feedback from business clients, with reviewers consistently highlighting professionalism, clear communication, and relationship-preserving collection practices.
• At Southwest Recovery Services, we specialize in B2B invoice recovery for commercial contractors, operating on a contingency-only basis with 20+ years of experience and 12 offices across seven states.

Choosing a Collection Agency for Your Plumbing Business

Unpaid invoices are a persistent challenge in the plumbing industry, and choosing the right collection partner can mean the difference between recovering revenue and writing it off entirely.

Here, you’ll learn about the three best collection agencies for plumbing companies: Southwest Recovery Services, The Kaplan Group, and American Profit Recovery, examining each agency’s fee structure, ideal use case, and what business clients say about working with them.

All three operate on a contingency or low-cost model, so there is no upfront financial commitment. The agencies differ in specialization, geographic footprint, and the size and complexity of accounts they handle best, making the right choice dependent on the type of plumbing work and client base involved.

Top 3 Collection Agencies for Plumbing Companies

1. Southwest Recovery Services

We are a Texas-based commercial collections firm with over 20 years of experience in B2B invoice recovery. We operate exclusively on a contingency basis, meaning plumbing businesses pay nothing upfront and only owe a fee when money is successfully collected. Contingency fees typically range from 10–25% depending on account age and complexity.

We focus primarily on businesses generating between $10 million and $100 million in annual revenue. For plumbing companies working with general contractors, property managers, or commercial facilities, we bring industry-relevant expertise. Priority sectors include trucking, logistics, contractors, and oil and gas, trade industries that share many of the same payment structures as commercial plumbing work.

What sets us apart is our combination of AI-guided tracking software that monitors every payment commitment across phone, email, text, and mail, with daily founder involvement in account management. We operate 12 offices across seven states, giving us both national reach and local market knowledge. Our compliance-first philosophy means no threats, no guarantees, and no tactics that could reflect poorly on our clients.

Client Reviews

Feedback from business clients highlights our consistent responsiveness and professional conduct. Clients note that our team provides timely reporting updates and handles difficult accounts with both persistence and professionalism, maintaining compliance standards throughout. The involvement of our company leadership in day-to-day account management is frequently cited as a differentiator.

2. The Kaplan Group

The Kaplan Group is a California-based boutique commercial collection agency founded in 1991 that focuses on B2B claims. The agency operates nationwide and handles international claims as well.

The firm’s model is well-suited to plumbing companies dealing with larger outstanding commercial invoices. The Kaplan Group does not use call centers, predictive dialers, or scripted outreach. Every account receives a customized approach that includes direct phone contact, research, negotiation, and strategic communication. For claims that require legal escalation, the agency has an in-house law firm that steps in at the same contingency rate, no additional retainer required.

Plumbing businesses with high-value commercial accounts or long-overdue large invoices are a natural fit for this agency.

Client Reviews

Reviews on verified platforms reflect strong satisfaction among B2B clients. Businesses praise the agency for transparency around fees, clear communication throughout the collection process, and the ability to recover accounts that prior internal or external efforts had failed to resolve. Clients specifically note the value of having in-house legal support available when standard collection efforts stall.

3. American Profit Recovery

American Profit Recovery is a Michigan-based collection agency that has served small and mid-sized trade businesses, including plumbing and HVAC contractors, since 2004. The agency serves plumbing and heating contractors among its trade industry clients.

APR’s model differs slightly from the other agencies. They provide a tiered approach: a flat-fee pre-collection service costing no more than $24 per account for early-stage outreach, and a contingency-based service for accounts that require deeper collection activity. This structure makes APR particularly accessible to smaller plumbing businesses managing a higher volume of smaller-balance accounts.

The agency uses an online portal, APRweb, that allows clients to submit accounts and monitor collection activity around the clock. APR focuses on preserving client relationships by using diplomatically trained collectors who work by phone, email, and mail.

Client Reviews

APR’s client reviews are largely positive, with business owners across the trades highlighting the agency’s ease of use, responsive customer support, and diplomatic approach to outreach. Plumbing and HVAC businesses specifically note that the team understands the unpredictable nature of their schedules and the importance of protecting local reputations.

Some consumers contacted by APR have filed complaints about debt verification practices, which are common across the industry. Overall, the B2B client experience is consistently well-reviewed.

How Much Do Collection Agencies for Plumbing Companies Cost?

The dominant pricing model for commercial collection agencies is contingency-based, meaning plumbing companies pay nothing upfront and only owe a fee when the agency successfully recovers funds.

For B2B accounts, contingency fees typically fall between 10–25% of the amount recovered. Where a specific account lands within that range depends on several factors. Account age is the most significant driver: fresh invoices under 90 days old are easier to collect and typically attract lower rates, while accounts aged beyond 180 days require more intensive effort and command higher percentages.

Balance size also plays a role: larger balances often justify lower contingency rates because the recovered dollar amount remains substantial for the agency, even at a reduced percentage. Claim complexity matters too; straightforward invoice disputes cost less to pursue than accounts involving contract disagreements, multiple decision-makers, or skip tracing.

Some agencies, like American Profit Recovery, provide a hybrid model that includes a flat-fee pre-collection tier for early-stage outreach before moving to contingency-based collection if the initial effort doesn’t resolve the debt.

At-a-Glance Comparison: Best Collection Agencies for Plumbing Companies

Why Southwest Recovery Services Is the Right Partner for Plumbing Businesses

When a commercial plumbing company has unpaid invoices, cash flow disruptions go beyond slowing operations; they affect payroll, vendor relationships, and the capacity to take on new work. At Southwest Recovery Services, we treat every account as though the money belongs to us, because in a contingency model, it does until we collect it for you.

Our approach combines veteran collectors, AI-powered tracking across every communication channel, and daily founder involvement to make sure nothing falls through the cracks. We work as a compliance-first extension of your team; no threats, no guarantees, no tactics that embarrass your business. If outstanding invoices are costing your plumbing company more than you realize, request a free customized quote from us.

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Frequently Asked Questions (FAQs)

How much does a collection agency charge a plumbing company to recover unpaid invoices?

Most collection agencies for plumbing businesses work on a contingency model, meaning no upfront cost. Fees are typically between 10% and 25% of the amount successfully recovered. The exact rate depends on factors such as the account’s age, the balance size, and the complexity of the claim. Some agencies also offer flat-fee pre-collection services for newer accounts.

When should a plumbing company turn an overdue invoice over to a collection agency?

Placing accounts after 60–90 days of non-payment is ideal, once internal follow-up efforts have stalled. The older a debt gets, the harder it becomes to recover. Acting early significantly improves the likelihood of successful collection.

Will using a collection agency damage my relationship with a commercial client?

It depends on the agency. Collection firms that specialize in B2B recovery are trained to use respectful, professional outreach that protects the creditor’s reputation. The goal is to resolve the debt, not escalate conflict. Choosing an agency that prioritizes relationship preservation and compliance-first tactics reduces the risk of damaging ongoing business relationships.

Can a collection agency help a plumbing company recover money from a general contractor or commercial property manager?

Yes. B2B collection agencies are specifically equipped to handle commercial disputes involving contractors, property managers, and other business entities. Agencies experienced in this space know how to do this effectively.

What makes Southwest Recovery Services a strong fit for commercial plumbing businesses?

We were built for B2B commercial invoice recovery, with a focus on trade industries such as contractors, logistics, and oil and gas. We operate on a contingency-only model and use AI-powered tracking combined with omnichannel outreach to stay on top of every account. We provide the depth and reach that commercial plumbing companies need when clients stop paying.

*Note: Recovery rates mentioned are for general reference only and not guaranteed. Actual results vary by account and industry. Contact Southwest Recovery Services for a customized quote.